Paradyne 3921PLUS manual

COMSPHERE 392x P LUS MODEMS MODELS 3920 P LUS AND 3921 P LUS INST ALLA TION AND OPERA TION MANUAL Document No. 3920-A2-GN31-30 November 1996[...]

COMSPHERE 392x Plus Modems A November 1996 3920-A2-GN31-30 COMSPHERE 392x Plus Modems Models 3920 Plus and 3921 Plus Installation and Operation Manual 3920-A2-GN31-30 4th Edition (November 1996) Changes and enhancements to the product and to the information herein will be documented and issued as a new release or a Firmware Update Description docum[...]

Safety Instructions B 3920-A2-GN31-30 November 1996 Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2. This product is intended to be used with a three-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is[...]

COMSPHERE 392x Plus Modems C November 1996 3920-A2-GN31-30 Notices      ?[...]

i 3920-A2-GN31-30 November 1996 T able of Contents Preface Objectives and Reader Assumptions vii . . . . . . . . . . . . . . . . . . . . . . . . . How to Use This Manual vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents viii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. Introd[...]

COMSPHERE 392x Plus Modems ii November 1996 3920-A2-GN31-30 Poll List Branch 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control Branch 3-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T est Branch 3-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

T able of Contents iii 3920-A2-GN31-30 November 1996 List of Figures Figure Page 1-1 Model 3920 Plus Standalone Singleport and Multiport Modems 1-3 . . . . . . . . . . . . . . . 1-2 Model 3921 Plus Singleport Modem 1-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Model 3921 Plus Multiport Modem 1-6 . . . . . . . . .[...]

COMSPHERE 392x Plus Modems iv November 1996 3920-A2-GN31-30 List of T ables T able Page 1-1 392x Plus Operational Modes 1-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 T echnical Specifications for 392x Plus Modems 1-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3 92x Plus DCP LEDs 3-5 [...]

T able of Contents v 3920-A2-GN31-30 November 1996 T able Page B-6 Online Operation B-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7 Mux Operation B-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 EIA-232-D Pin Assignment[...]

vii 3920-A2-GN31-30 November 1996 Preface Objectives and Reader Assumptions This manual describes how to install and operate the COMSPHERE r Model 3920 Plus standalone and Model 3921 Plus carrier -mounted modems. Users of this manual must have a basic understanding of modems and their operation. How to Use This Manual Chapter 1 provides technical s[...]

COMSPHERE 392x Plus Modems viii November 1996 3920-A2-GN31-30 Related Documents 3000-A2-GA31 COMSPHERE 3000 Series Carrier , Installation Manual 3610-A2-GZ45 3600 Hubbing Device, Featur e Number 3600-F3-300, Installation Instructions 3920-A2-GK41 COMSPHERE 392xPlus Modems, Models 3920Plus and 3921Plus, Installation Instructions 3920-A2-GK40 COMSPHE[...]

1-1 3920-A2-GN31-30 November 1996 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . COMSPHERE 392x Plus Models 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3920 Plus Standalone Singleport Modem 1-2 . . . . . . . . . . . . . . . . . . . M[...]

COMSPHERE 392x Plus Modems 1-2 November 1996 3920-A2-GN31-30 COMSPHERE 392x Plus Models The COMSPHERE 392x Plus modem is available in the following four models: • Model 3920 Plus standalone singleport modem (model no. 3920-A1-41x). • Model 3920 Plus standalone multiport modem (model no. 3920-A1-40x). • Model 3921Plus carrier -mounted singlepo[...]

Introduction 1-3 3920-A2-GN31-30 November 1996 DIAGNOSTIC CONTROL P ANEL LCD AND KEYP AD ST A TUS INDICA TORS SPEAKER POWER SUPPL Y POWER CORD 496-14684-01 LEASED Model 3920 Plus Singleport and Multiport Housing Singleport Modem Back Panel Multiport Modem Back Panel POWER ON/OFF DIAL DTE 1 NMS POWER IN DTE 2 DTE 3 DTE 4 POWER ON/OFF LEASED DIAL DTE[...]

COMSPHERE 392x Plus Modems 1-4 November 1996 3920-A2-GN31-30 Model 3921 Plus Carrier-Mounted Singleport Modem The Model 3921 Plus is a carrier-mounted singleport modem (Figure 1-2) capable of either 4-wire/2-wire leased-line or dial operation. The modem installs into a COMSPHERE 3000 Series Carrier , occupying a single slot. The modem’ s faceplat[...]

Introduction 1-5 3920-A2-GN31-30 November 1996 F ACEPLA TE 496-14178a-04 EIA232/V .24 EDGE CARD CONNECTOR FUTURE USE BACK CONNECTOR PLA TE V .35 (3600/3500) RS366A/V .25 (3800) EIA232/V .24 TXD RXD RTS CTS DSR DTR LSD 103 104 105 106 107 108 109 Pwr Alrm T est Dial RI Busy Serv SQ Status Front Panel 3921 Plus 142 125 Spkr EIA232/V .24 CONNECTOR FUT[...]

COMSPHERE 392x Plus Modems 1-6 November 1996 3920-A2-GN31-30 49614423a-0 3 F ACEPLA TE EDGE CARD CONNECTORS PORT 3 PORT 4 PORT 1 PORT 2 3921 Plus TXD RXD RTS CTS DSR DTR LSD Pwr Alrm T est Dial RI Busy Serv SQ Status Front Panel Spkr 142 125 103 104 105 106 107 108 109 13 24 Port BACK CONNECTOR PLA TES DTE B DTE A DTE B DTE A Figure 1-3. Model 3921[...]

Introduction 1-7 3920-A2-GN31-30 November 1996 392x Plus Operational Modes The 392x Plus operational modes determine how your modem performs in various applications. These operational modes are determined by your modem model and the selected configuration options. There are two operational modes: • Singleport mode. Operates on both the singleport[...]

COMSPHERE 392x Plus Modems 1-8 November 1996 3920-A2-GN31-30 • Network management system (NMS) support through the COMSPHERE 6800 or 6700 Series NMS using Advanced Diagnostic protocol (ADp). • Automatic and manual backup with standby capabilities for 4-wire/2-wire leased-line applications. (The backup facility may be either a 2-wire dial line o[...]

Introduction 1-9 3920-A2-GN31-30 November 1996 Dual-Leased Backup Dual-Leased Backup is available in all 392x Plus modems. It enables a 2-wire leased line to be used as the backup facility instead of the normal 2-wire dial line. Plug the leased line into the jack labeled DIAL on the back panel of the modem (see Figure 2-1 in Chapter 2), and enable [...]

COMSPHERE 392x Plus Modems 1-10 November 1996 3920-A2-GN31-30 The CCITT standard for V .34 modulation includes dial- or leased-line operation. For proper leased-line operation, one modem must be designated as the answer modem while the other modem must be designated as the originate modem. The V .34 standard also includes asymmetric rates, automati[...]

Introduction 1-1 1 3920-A2-GN31-30 November 1996 Government Requirements and Equipment Return Certain governments require that instructions pertaining to modem connection to the public switched telephone network be included in the installation and operation manual. Specific instructions are listed in the following sections. United States NOTICE T O[...]

COMSPHERE 392x Plus Modems 1-12 November 1996 3920-A2-GN31-30 9. If you experience trouble with this equipment, please contact your sales or service representative (as appropriate) for repair or warranty information. If the product needs to be returned to the company service center for repair , contact them directly for return instructions using on[...]

Introduction 1-13 3920-A2-GN31-30 November 1996 T echnical Specifications T able 1-2 shows the technical specifications for the 392x Plus modems. T able 1-2 (1 of 2) T echnical Specifications for 392x Plus Modems Specifications Description APPROV ALS Model 3920 Plus, 3921 Plus, and COMSPHERE 3000 Series Carrier Refer to the product labeling or cont[...]

COMSPHERE 392x Plus Modems 1-14 November 1996 3920-A2-GN31-30 T able 1-2 (2 of 2) T echnical Specifications for 392x Plus Modems Specifications Description POWER CONSUMPTION Model 3920 Plus Singleport 6 watts (typical, including power supply , speaker off) Model 3921 Plus Singleport 4 watts (typical, each card) (Speaker consumption is approximately[...]

2-1 3920-A2-GN31-30 November 1996 Modem Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392x Plus Modem Package 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer-Supplied Equipment 2-2 . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 392x Plus Modems 2-2 November 1996 3920-A2-GN31-30 For the carrier-mounted models • Installation instructions • Model 3921 Plus modem • One (singleport) or two (multiport) connector plates with two DB-25-S edge card connectors on each plate If any hardware components are damaged, notify your service representative. Return equipment [...]

Modem Installation 2-3 3920-A2-GN31-30 November 1996 Model 3920 Plus Modem Installation Before installing your standalone modem, make sure your installation site is clean and well-ventilated. Allow space around the modem for installing cables and telephone cords, and make sure the modem is located within reach of the ac power outlet. The distance b[...]

COMSPHERE 392x Plus Modems 2-4 November 1996 3920-A2-GN31-30 8-POSITION, 8-CONDUCTOR PLUG FOR LEASED-LINE NETWORK OPERA TION 6-POSITION, 4-CONDUCTOR PLUG FOR PERMISSIVE DIAL NETWORK OPERA TION DB-25-P CONNECTOR FOR DA T A TERMINAL EQUIPMENT OPERA TION SUB-MINIA TURE, 4-POSITION, 4-CONDUCTOR PLUG FOR NETWORK MANAGEMENT SYSTEM OPERA TION POWER SUPPL [...]

Modem Installation 2-5 3920-A2-GN31-30 November 1996 Power Supply Connection Use the following steps to connect the modem to an ac power outlet: 1. Make sure the modem is powered OFF . 2. Insert the power supply’ s 8-pin DIN connector into the modem’ s back panel dc power receptacle, labeled PWR (Figure 2-1). 3. Connect the power cord to the po[...]

COMSPHERE 392x Plus Modems 2-6 November 1996 3920-A2-GN31-30 Network Management System Connection Use the following steps to connect the modem to the network management system (NMS) interface: 1. Insert the sub-miniature, 4-conductor modular plug of the 3600 Hubbing Device into the jack labeled NMS (Figure 2-1). Refer to Document Number , 3610-A2-G[...]

Modem Installation 2-7 3920-A2-GN31-30 November 1996 SDU is required when the modems in the carrier are controlled by an NMS, or when multiple carriers in a cabinet configuration are to be controlled by a single shared diagnostic control panel (SDCP). The SDCP of the COMSPHERE 3000 Series Carrier is the user interface to the Model 3921 Plus modem. [...]

COMSPHERE 392x Plus Modems 2-8 November 1996 3920-A2-GN31-30 3000 SERIES CARRIER MODEL 3921 Plus MUL TIPORT MODEM LA TCH CIRCUIT CARD GUIDES 495-14708 SDU MODEL 3921 Plus SINGLEPORT MODEM LA TCH CIRCUIT CARD GUIDES SDU 3000 SERIES CARRIER Figure 2-3. Installing the Model 3921 Plus Modem[...]

Modem Installation 2-9 3920-A2-GN31-30 November 1996 If the Model 3921 Plus modem is to communicate with an installed SDCP , install the modem as described above and perform the following steps: 1. Press the Select key on the SDCP . The Carr:Slot screen appears with the cursor on the slot selection position (01 on the first LCD line in following sc[...]

COMSPHERE 392x Plus Modems 2-10 November 1996 3920-A2-GN31-30 6. Once you have determined that the modem is installed properly and completed its power -up self-test, rotate the circuit pack lock until it covers the faceplate latch (Figure 2-4) and tighten the retention screw on the circuit pack lock. This prevents the modem from accidently being re[...]

Modem Installation 2-1 1 3920-A2-GN31-30 November 1996 Removing and Replacing the Model 3921 Plus Modem CAUTION When removing the Model 3921 Plus modem from the carrier , always use a ground strap when handling the modem. Always store the Model 3921 Plus modems in an antistatic bag when it is removed from the carrier . It is not necessary to power [...]

COMSPHERE 392x Plus Modems 2-12 November 1996 3920-A2-GN31-30 configuration, then you must change the factory setting using either the modem’ s DCP (as described in the following sections) or the A T command set. The purpose of having preset configurations is so that you can have a “head start” in getting your modem operating and reducing the[...]

3-1 3920-A2-GN31-30 November 1996 DCP Operation Overview 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3920 Plus Diagnostic Control Panel 3-3 . . . . . . . . . . . . . . . . [...]

COMSPHERE 392x Plus Modems 3-2 November 1996 3920-A2-GN31-30 T est Branch 3-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abort 3-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self 3-56 . . . . . . . . . . . . . . . . . . . . . [...]

DCP Operation 3-3 3920-A2-GN31-30 November 1996 Model 3920 Plus Diagnostic Control Panel The diagnostic control panel (DCP) of the Model 3920 Plus modem (Figure 3-1) contains status indicators, pushbutton-type keys, an LCD, and speaker grill. PWR ALRM CTS TXD LSD RXD TEST RA TE 105 106 103 109 108 142 COMSPHERE 3920 Plus 496-14412-0 2 F1 F2 F3 SQ R[...]

COMSPHERE 392x Plus Modems 3-4 November 1996 3920-A2-GN31-30 TXD RXD RTS CTS DSR DTR LSD Pwr Alrm T est Dial RI Busy Serv SQ Status Front Panel Spkr 142 125 103 104 105 106 107 108 109 13 24 Port 3921 Plus OK Alrm In Out Status Diag Diag SDU TXD RXD RTS CTS DSR DTR LSD Pwr Alrm T est Dial RI Busy Serv SQ Status Front Panel Spkr 142 125 103 104 105 [...]

DCP Operation 3-5 3920-A2-GN31-30 November 1996 T able 3-1 (1 of 2) 392x Plus DCP LEDs Label Color Indicates Pwr green Power has been applied to the modem. Alrm red Flashing – A major alarm has been detected in a remote 392x Plus modem. ON – A major alarm has been detected in the local modem. (Fo r H ealth and Status alarm conditions, refer to [...]

COMSPHERE 392x Plus Modems 3-6 November 1996 3920-A2-GN31-30 T able 3-1 (2 of 2) 392x Plus DCP LEDs Label Indicates Color Port* 1,2,3,4 (3921Plus multiport only) green ON – The selected port* is one of the mux ports (either 1, 2, 3, or 4). OFF – The port* is not selected. TXD/103* green The modem is receiving data from the selected port* to tra[...]

DCP Operation 3-7 3920-A2-GN31-30 November 1996 Diagnostic Control Panel Operation The 392x Plus modem’ s diagnostic control panel (DCP) is the user interface to all functions used to configure and control the modem. In addition to the status LEDs, this interface includes the liquid crystal display (LCD) and keypad (Figure 3-3). F1 Leased:28.8 St[...]

COMSPHERE 392x Plus Modems 3-8 November 1996 3920-A2-GN31-30 Other Indicators Other indicators may turn on depending on existing conditions, such as error detection, informational alerts, and warnings. These indicators appear on the top or bottom line of the LCD. Remote Mode Indicator If the local 392x Plus modem establishes a connection with the r[...]

DCP Operation 3-9 3920-A2-GN31-30 November 1996 F1 F2 F3 Keys Function keys F1, F2, and F3 select the LCD choice that appears above the function key . Refer to the Summary section in Chapter 4 for the exception. If the displayed LCD choice spans more than one function key , then any of the function keys select that choice. NOTE In the screen exampl[...]

COMSPHERE 392x Plus Modems 3-10 November 1996 3920-A2-GN31-30 The menu tree contains the following branches: Status — Used to monitor the current status of the VF line and DTE interface as well as view the identity of the modem. Configure — Used to change and save the modem’ s configuration options. PList — (Poll List) Used to identify down[...]

DCP Operation 3-1 1 3920-A2-GN31-30 November 1996 T op-Level Menu Status and Operational Messages Access to all menu tree branches from the DCP begins at the T op-Level menu, the head of the menu hierarchy . The LCD’ s top line identifies the modem status, as listed in T able 3-3, while the bottom line displays the main menu tree branches as well[...]

COMSPHERE 392x Plus Modems 3-12 November 1996 3920-A2-GN31-30 T able 3-3 (2 of 3) T op-Level Menu Status Status Indicates Message Call Failure Busy Signal The answering modem is busy . Delayed Number { As a result of failed call attempts, this number can not be called at this time. Please try again later . Dial Line in Use The modem is operating on[...]

DCP Operation 3-13 3920-A2-GN31-30 November 1996 T able 3-3 (3 of 3) T op-Level Menu Status Status Indicates Message Call Disconnect A TH Disconnect The modem has disconnected due to an A TH command. Bad Lines Disc The modem has disconnected because the lines do not support the modulation and/or data rate selected. No Carrier Disc The modem disconn[...]

COMSPHERE 392x Plus Modems 3-14 November 1996 3920-A2-GN31-30 Messages listed in T able 3-4 are common operational messages that occur during modem operation. These messages normally appear on the second line of the LCD. T able 3-4 Common Operational Messages Common Operational Message Indicates Please W ait... A command to a local device takes mor[...]

DCP Operation 3-15 3920-A2-GN31-30 November 1996 The T op-Level menu’ s main branches appear on the LCD in the order of Status, Configure, Control, T est, Call Setup, T alk/Data, Security , and Remote. These branches are discussed in this chapter except for the Configure branch which is reserved for Chapter 4, DCP Configuration , and the Security[...]

COMSPHERE 392x Plus Modems 3-16 November 1996 3920-A2-GN31-30 The following provides information about the Quick Configuration LCD display . a Displays the network position of the modem. The letter C indicates this is a control modem, and T indicates this is a tributary modem. bbb Displays the network management address of the modem. The valid addr[...]

DCP Operation 3-17 3920-A2-GN31-30 November 1996 Status Branch The Status branch of the T op-Level menu allows you to view the current status of the leased-line or dial connection, the identity (for example, serial number and model number) of your equipment, and the DTE interface. Configure PList Control T est SubHS Call_Setup Tlk/Data Security Rem[...]

COMSPHERE 392x Plus Modems 3-18 November 1996 3920-A2-GN31-30 Device Health and Status (DeviceHS) DeviceHS provides a ‘ ‘snapshot” of current modem alarms which are active at the time the DeviceHS function is selected. T o access DeviceHS from the Status branch, make the following selection: F1 Status: > DeviceHS VF F2 F3 Select DeviceHS. [...]

DCP Operation 3-19 3920-A2-GN31-30 November 1996 T able 3-6 (2 of 3) Health and Status Messages T ype Indicates Message Status Subtree T runcate Downstream health and status information has been truncated because it overflowed system limits. There is a large amount of health and status information in the subnetwork. T est Mode The modem or an upstr[...]

COMSPHERE 392x Plus Modems 3-20 November 1996 3920-A2-GN31-30 T able 3-6 (3 of 3) Health and Status Messages T ype Indicates Message Security Database Reset The security database has been reset (passwords erased). Password Protect Security password protection is enabled. Mode Change There has been a change in security mode. (Refer to Chapter 6, Dia[...]

DCP Operation 3-21 3920-A2-GN31-30 November 1996 Displaying VF Conditions F1 Status:VF Display Clear F2 F3 To display VF conditions, select Display from the Status:VF screen. F1 Status:VF > SigQual=Excelent F2 F3 If the modem is receiving a signal, the signal quality appears on the LCD’ s bottom line. If the modem is not receiving a signal, th[...]

COMSPHERE 392x Plus Modems 3-22 November 1996 3920-A2-GN31-30 EchoFreqOff Echo Frequency Of fset displays the frequency of fset of the far end echo. This parameter appears for V .34, V .32 terbo, V .32bis, and V .32 modulations (in 2-wire only). Phase Hts Phase Hits reports the total hit count of sudden uncontrolled changes in the phase of the rece[...]

DCP Operation 3-23 3920-A2-GN31-30 November 1996 F1 VF Counter Clear Command Complete F2 F3 The message Command Complete appears on the LCD’ s bottom line indicating the VF Counters are cleared. T o exit VF and remain in the Status Branch, press the key . T o exit and return to the T op-Level menu, press the key . Identity Identity displays the m[...]

COMSPHERE 392x Plus Modems 3-24 November 1996 3920-A2-GN31-30 DTE DTE displays the state and/or activity of the following interface leads: LSD, DTR, DSR, TST , TXD, RXD, R TS, and CTS. The interface leads status is updated every 5 seconds. T o access DTE from the Status branch, make the following selections: F1 Status: Identity DTE F2 F3 Press the [...]

DCP Operation 3-25 3920-A2-GN31-30 November 1996 V .34 When running V .34 modulation, this function displays information about the modem’ s receiving and transmitting data rate, symbol rate, transmitting level, and asymmetric rate. NOTE The V .34 status display is available only when the modem is configured for V .34 modulation. To access V .34 f[...]

COMSPHERE 392x Plus Modems 3-26 November 1996 3920-A2-GN31-30 Backup The Status Backup function displays the configuration of the modem’ s current operating line facility and the configuration and condition of the inactive line. NOTE The modem’s rear panel has two line interface jacks: LEASE and DIAL (see Figure 2-1 in Chapter 2). The jack labe[...]

DCP Operation 3-27 3920-A2-GN31-30 November 1996 T able 3-7 provides information about the Status Backup screens. The first column lists all possible configurations for the modem’ s currently active line. The second column lists all possible configurations for the modem’ s inactive lines. The third column provides information about the inactive[...]

COMSPHERE 392x Plus Modems 3-28 November 1996 3920-A2-GN31-30 Options The Options Status function displays all optional firmware features currently installed in the modem. If no firmware options are installed, None_Installed appears on the LCD. T o access Options from the Status branch, make the following sections: F1 Status: DTE Options F2 F3 Pres[...]

DCP Operation 3-29 3920-A2-GN31-30 November 1996 F1 Record Status Display Clear F2 F3 To display sequence faults, select Display . F1 Record Number 1 Modem O.K. F2 F3 The LCD displays the first sequence fault field. (Sequence fault fields range from 1 to 8 and are identified by a number in the upper right corner .) Press the key to view the remaini[...]

COMSPHERE 392x Plus Modems 3-30 November 1996 3920-A2-GN31-30 Select Nxt to scroll through the entries in the Service Log. T o exit this function and remain in the Status branch, press the key . T o exit and return to the T op-Level menu, press the key . Configure Branch The Configure branch of the LCD allows you to change and save the modem’ s c[...]

DCP Operation 3-31 3920-A2-GN31-30 November 1996 F1 Leased:28.8 PList Control F2 F3 Press the key until PList appears. Select PList. W ithin a network link, a control modem can communicate with a tributary modem by using the tributary modem’ s network management address for polling functions. Each TMp tributary modem must have a dif ferent networ[...]

COMSPHERE 392x Plus Modems 3-32 November 1996 3920-A2-GN31-30 Select Nxt to scroll through the entries in the Active or Skip poll lists. T o exit this function and remain in the PList Display branch, press the key . T o exit and return to the T op-Level menu, press the key . Clear The Clear function does not appear in Remote mode. Clear deletes the[...]

DCP Operation 3-33 3920-A2-GN31-30 November 1996 T o implement Change, select the appropriate function (Active, Delete, or Skip). (For Skip, you will need to press the key until Skip appears.) F1 Poll List:yyyyyy E n t  x xx F2 F3 The function field (yyyyyy) displays the function selected (Active, Delete, or Skip). The address field (xxx) displa[...]

COMSPHERE 392x Plus Modems 3-34 November 1996 3920-A2-GN31-30 The message Command Complete appears on the LCD to indicate that the tributary modem will be added to the control modem’ s poll list. T o exit this function and remain in the PList branch, press the key . T o exit and return to the T op-Level menu, press the key . Acquire The Acquir e [...]

DCP Operation 3-35 3920-A2-GN31-30 November 1996 F1 Poll List:Acquir Num Acquired yyy F2 F3 The number field (yyy) indicates the total number of devices acquired for the poll list. T o exit this function and remain in the PList branch, press the key . T o exit and return to the T op-Level menu, press the key . Control Branch The Control branch of t[...]

COMSPHERE 392x Plus Modems 3-36 November 1996 3920-A2-GN31-30 Speaker Speaker allows you to make temporary adjustments to the modem’ s speaker volume. Upon a reset, speaker volume returns to its configured setting. For more information on speaker settings, refer to the Misc section in Chapter 4. T o access Speaker from the Control branch, make th[...]

DCP Operation 3-37 3920-A2-GN31-30 November 1996 Reset Reset causes the modem to stop operation and perform a complete program restart. The modem begins the power -up test sequence that ends with the T op-Level menu displayed on the LCD. Configuration options stored in an Active (Saved) configuration area are copied to the Active (Operating) config[...]

COMSPHERE 392x Plus Modems 3-38 November 1996 3920-A2-GN31-30 F1 Data Stream Port1 Disable F2 F3 The port field (for example, Port1) displays the selected port. The available Data Stream action (Disable or Enable) appears on the second line of the LCD beside the port field. If the modem’ s data transmitter is enabled, the word Disable appears to [...]

DCP Operation 3-39 3920-A2-GN31-30 November 1996 F1 Select DS Port > All F2 F3 To change the data stream on all ports again, press the F1 key . or T o exit this function and remain in the Control branch, press the key . T o exit and return to the T op-Level menu, press the key . EIA LEDs This function allows the front panel EIA LEDs to display a[...]

COMSPHERE 392x Plus Modems 3-40 November 1996 3920-A2-GN31-30 Press the F1 key until the appropriate digital interface appears. Select the appropriate interface by pressing the corresponding function key . After selecting the desired interface, the message Command Complete appears on the bottom line of the LCD and the selected interface appears in [...]

DCP Operation 3-41 3920-A2-GN31-30 November 1996 F1 Control: RemoveMakeBusy F2 F3 Press any function key to select RemoveMakeBusy . The message Command Complete appears on the LCD. Service Line/Disconnect Service Line The Service Line/Disconnect Service Line is only available in Models 3921-B1-001 and 3021-B1-01 1. The Service Line function allows [...]

COMSPHERE 392x Plus Modems 3-42 November 1996 3920-A2-GN31-30 T o disconnect the modem from the service line and resume normal operation, press the key (returning to Control branch). From the Control branch, press the key until DiscServiceLine appears. F1 Control: DiscServiceLine F2 F3 Press F1 (DiscServiceLine). The call and service line disconnec[...]

DCP Operation 3-43 3920-A2-GN31-30 November 1996 F1 Control: Download_Code F2 F3 Press the key until Download_Code appears. Press any function key to select Download_Code. The DwnLoadSoftware screen appears. F1 DwnLoadSoftware > Clone_Remote F2 F3 Press any function key to select Clone_Remote. The next screen to appear is determined by the modem[...]

COMSPHERE 392x Plus Modems 3-44 November 1996 3920-A2-GN31-30 From the Choose DLL T ype screen, press the F1 key to select SC_Clone to request the transfer of an exact copy of the tributary modem’ s firmware to the VF connected control modem. Proceed to the section titled Implementing a Clone Remote Operation , which follows the descriptions of m[...]

DCP Operation 3-45 3920-A2-GN31-30 November 1996 Clone Remote in Multipoint Configurations A T rellis Multipoint (TMp) control modem can be used to download firmware to just one tributary modem ( Single ) or to all of its tributary modems ( Multiple ). NOTE A T rellis Multipoint (TMp) tributary modem cannot download firmware to its control modem. T[...]

COMSPHERE 392x Plus Modems 3-46 November 1996 3920-A2-GN31-30 Cloning a Single TMp Remote F1 Choose DLL T ype > Single Multiple F2 F3 Press the F1 key to select Single Clone Remote. F1 Choose Address: E n t  x xx F2 F3 The address field (xxx) displays the network management address of the modem that receives the download. The valid address fi[...]

DCP Operation 3-47 3920-A2-GN31-30 November 1996 Cloning a Multiple TMp Remote F1 Choose DLL T ype > Single Multiple F2 F3 Press the F3 key to select Multiple Clone Remote. After completing this action, proceed to the next section titled Implementing a Clone Remote Operation . Viewing Multiple TMp Clone Results F1 Choose DLL T ype > MPtCloneR[...]

COMSPHERE 392x Plus Modems 3-48 November 1996 3920-A2-GN31-30 Implementing a Clone Remote Operation W ARNING The modem begins a transfer of its own program to the remote modem. This process takes the communication link out-of-service for a period of time depending on the data rate of the link. If the Clone Remote process is started and then interru[...]

DCP Operation 3-49 3920-A2-GN31-30 November 1996 If unsuccessful, the modem remains in the Download T ransfer mode. The LCD’ s top line displays RemClone Failed and the bottom line displays one of the following messages: Incompat Modulat The modems are connected, but are using a modulation scheme other than V .34 family , V .33, V .32 family , V [...]

COMSPHERE 392x Plus Modems 3-50 November 1996 3920-A2-GN31-30 Automatic Firmware Download New releases may be available for the 392x Plus modems. The latest 392 xPlus firmware is available at no char ge from the Automatic Firmware Download Center . Refer to page A in the front of this document for contact information. T o download the firmware, you[...]

DCP Operation 3-51 3920-A2-GN31-30 November 1996 VF Thresholds Update The VF Thresholds Update function allows you to set the thresholds that determine the H e a l th a n d St a t u s alarm conditions for the VF parameters. R ef e r t o T ab l e 3 - 8 i n t h i s s e c tion for VF thresholds and their valid ranges and default values. T o access VF_[...]

COMSPHERE 392x Plus Modems 3-52 November 1996 3920-A2-GN31-30 NOTE Note that a warning ( ) appears on the second line of the screen if you enter an invalid VF threshold (out of range). Y ou cannot save your edits until all thresholds are within their valid range. Refer to T able 3-8 for valid VF threshold ranges. r F1 RSL High (- dBm) N x t  [...]

DCP Operation 3-53 3920-A2-GN31-30 November 1996 If the edited VF thresholds are valid, the Save command stores them into nonvolatile memory . When the Save completes, the message Save Completed appears. F1 Save VF Thresh Thd Out of Range F2 F3 If the edited VF threshold is invalid (out of range), the error message Thd Out of Range appears. This in[...]

COMSPHERE 392x Plus Modems 3-54 November 1996 3920-A2-GN31-30 T able 3-8 (2 of 2) V alid Ranges for VF Thresholds VF Thresholds Default V alues V alid Ranges Far Echo 0 –38 dBm Above –20 dBm Frequency Offset 1 Hz to 15 Hz Above 4 Hz Phase Jitter 1 degree to 45 degrees Above 9 degrees Phase Hits 1 to 255 hits 20 hits per 15 minutes Impulse Hits [...]

DCP Operation 3-55 3920-A2-GN31-30 November 1996 To access the T est branch from the T op-Level menu, make the following selections: F1 Leased:28.8 Control T est F2 F3 Press the key until T est appears. Select T est. Abort Abort ends any test that is in progress and brings the modem back to the normal mode of operation. Confirmation is provided by [...]

COMSPHERE 392x Plus Modems 3-56 November 1996 3920-A2-GN31-30 Self Self performs an internal self-test of the modem, which takes less than a minute to complete. The modem must be of fline; otherwise, Invalid Command appears. W ARNING When this test is run in Remote mode, it causes the Remote mode session to be lost. The Remote mode session will ree[...]

DCP Operation 3-57 3920-A2-GN31-30 November 1996 Loc Analog Loop This test is not available when using V .34 modulation in Multiport mode. Loc Analog Loop performs a local analog loopback (CCITT V .54 Loop 3), Figure 3-4, that verifies modem operation as well as the connection between the DTE and modem. The modem must be offline and in Synchronous [...]

COMSPHERE 392x Plus Modems 3-58 November 1996 3920-A2-GN31-30 NOTE The test delays 15 to 30 seconds to allow any outstanding network management messages to propagate before the VF channel is interrupted by the test. The message Started appears on the LCD, and the T est LED lights for the duration of the test. If OtherT estActive appears on the LCD,[...]

DCP Operation 3-59 3920-A2-GN31-30 November 1996 T o access Rem_Digital_Loop from the T est branch, make the following selections: F1 T est: Rem_Digital_Loop F2 F3 Press the key until Rem_Digital_Loop appears. Press any function key to start this test. F1 Pick T est Port > Port1 Port2 F2 F3 Select the appropriate port by pressing the correspondi[...]

COMSPHERE 392x Plus Modems 3-60 November 1996 3920-A2-GN31-30 Loc Digital Loop Loc Digital Loop is issued by a local modem and forces it to loopback any data received from the remote modem (Figure 3-6 ). (This test operates the same as a CCITT V .54 Loop 2 except it is issued at your modem.) This is useful if a remote modem is incapable of initiati[...]

DCP Operation 3-61 3920-A2-GN31-30 November 1996 This screen does not appear in Singleport mode. F1 T est:P1:Dig Loop Started F2 F3 The message Started appears on the LCD and the T est LED lights. The port field (for example, P1 for Port 1) displays the port that is currently selected. Y ou may see P1, P2, P3, or P4. If OtherT estActive appears on [...]

COMSPHERE 392x Plus Modems 3-62 November 1996 3920-A2-GN31-30 Figure 3-8. Pattern T est and Digital Loopback T est Figure 3-9. End-to-End Pattern T est T o access Pattern from the T est branch, make the following selections: F1 T est: < Pattern F2 F3 Press the key until Pattern appears. Select Pattern to start this test.[...]

DCP Operation 3-63 3920-A2-GN31-30 November 1996 F1 Pick T est Port > Port1 Port2 F2 F3 Select the appropriate port by pressing the corresponding F key . Press the key to scroll other ports into view . The Pick T est Port screen does not appear in Singleport mode. F1 T est:P1:Pattern Started F2 F3 The message Started appears on the LCD and the T[...]

COMSPHERE 392x Plus Modems 3-64 November 1996 3920-A2-GN31-30 Sub-Network Health and Status Branch The Sub-Network Health and Status (SubHS) function is not available on multipoint tributary modems or with certain modulations (V .29, V .33, V .22bis, and V .27bis). The SubHS branch of the T op-Level menu allows you to display alarm conditions in do[...]

DCP Operation 3-65 3920-A2-GN31-30 November 1996 When you select SubHS, xxx Displays the network management address of the downstream modem selected. yyyyyy Displays the status of the downstream modem. This message is updated every several seconds to display the latest status. MAJOR , MINOR , and ST A TUS display Health and Status alarm conditions;[...]

COMSPHERE 392x Plus Modems 3-66 November 1996 3920-A2-GN31-30 T o access the Call Setup branch from the T op-Level menu, make the following selections: F1 Leased:28.8 Call_Setup F2 F3 Press the key until Call_Setup appears. Select Call Setup. Dial For dial backup applications, Dial allows you to dial any telephone number stored in directory locatio[...]

DCP Operation 3-67 3920-A2-GN31-30 November 1996 F1 DialDirectory:01 Off Hook F2 F3 The Call Setup status Off Hook appears during the connection process. If the connection is successful, the modem is online and one of the Normal Operation status messages (T able 3-3) appears on the LCD. If the connection is not successful, the LCD displays one of t[...]

COMSPHERE 392x Plus Modems 3-68 November 1996 3920-A2-GN31-30 Answer For dial backup applications, Answer allows the modem to go of f-hook, generate an answer tone, and begin the handshaking process with the calling modem. Use the Answer function when the Auto-Answer Ring Count configuration option is disabled. (Refer to the Line Dialer section in [...]

DCP Operation 3-69 3920-A2-GN31-30 November 1996 Under normal backup conditions, when a problem occurs on the primary leased line, the modems establish a connection over the backup network. F1 Call Setup: Dial Standby F2 F3 When this occurs, the Dial Standby function appears on the LCD. If you select Dial Standby , the modem switches back to the pr[...]

COMSPHERE 392x Plus Modems 3-70 November 1996 3920-A2-GN31-30 Change Directory Change Directory allows you to enter or modify telephone numbers. The modem has nonvolatile memory locations that allow you to store up to 24 telephone numbers. Each directory location can accept up to 40 characters; this includes the telephone number and dial command mo[...]

DCP Operation 3-71 3920-A2-GN31-30 November 1996 Entering T elephone Numbers and Dial Command Modifiers into Directory Locations The following example uses an empty directory location for describing how to enter a telephone number . If you want to change an existing telephone number in any of the 24 directory locations, follow the same procedures. [...]

COMSPHERE 392x Plus Modems 3-72 November 1996 3920-A2-GN31-30 T able 3-9 V alid Dial Command Modifiers Dial command modifiers are parameters entered in the dial command string which specify how , when, and what number to dial. The following is a list of parameters the 392x Plus modems recognize: T — T one (DTMF) dial. Any digit 0–9, *, or # can[...]

DCP Operation 3-73 3920-A2-GN31-30 November 1996 F1 Number Status Nxt 01:Allowed F2 F3 Select Nxt to display other directory locations. The status of a directory location can be: No Number The directory location is empty . Allowed The number in this directory location may be dialed at this time. Delayed The number in this directory location may be [...]

COMSPHERE 392x Plus Modems 3-74 November 1996 3920-A2-GN31-30 The following sections describe the uses of the T alk/Data function. Manual Dialing When the Remote Modem is Configured for Auto-Answer NOTE On the remote modem, the Line Current Disconnect configuration option (refer to the Line Dialer section in Chapter 4) must be set to Disable. This [...]

DCP Operation 3-75 3920-A2-GN31-30 November 1996 Manual Dialing When the Remote Modem is Configured for Manual Answer NOTE On both modems, the Line Current Disconnect configuration option (refer to the Line Dialer section in Chapter 4) must be set to Disable. If you are originating a call using a telephone and the remote modem is configured for Man[...]

COMSPHERE 392x Plus Modems 3-76 November 1996 3920-A2-GN31-30 Remote Branch The Remote branch of the T op-Level menu allows you to control the remote modem’ s DCP using the local modem’ s DCP . This function allows you to change configuration options and control test functions in a remote modem. Any changes made to configuration options while u[...]

DCP Operation 3-77 3920-A2-GN31-30 November 1996 Remote DCP access is accomplished using either the primary or secondary channel (if available) of the VF line. Using the primary channel gives a much faster response time due to the higher data rate, but it also interrupts data flow because primary data is stopped when Remote mode is active. Once Rem[...]

COMSPHERE 392x Plus Modems 3-78 November 1996 3920-A2-GN31-30 For T rellis Multipoint (TMp) modems (control or tributary), you must specify the remote access password of the modem that will be accessed by the Remote function. The following display does not appear in point-to-point modems. F1 Choose Password: E n t  y yyyyyyy F2 F3 The password f[...]

DCP Operation 3-79 3920-A2-GN31-30 November 1996 F1 Leased:28.8 Control ExitRem F2 F3 If the remote modem accepts the password and the entry is successful, the T op-Level menu of the remote modem appears on the local modem’ s LCD. An appears in the upper right-hand corner indicating that what is displayed on your LCD is actually the T op-Level me[...]

DCP Operation 3-81 3920-A2-GN31-30 November 1996 Diagnostic Control Panel Access NOTE This page of the manual is self supporting and can be removed to prevent unwanted knowledge of the DCP security access selections. Use the DCP security access function to “lock” the DCP of any 392x Plus modem and prevent unwanted user access. T wo options are [...]

4-1 3920-A2-GN31-30 November 1996 DCP Configuration Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configure Branch 4-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Editing and Saving a Configuration Option 4-4 . . . . . . . . . . . [...]

COMSPHERE 392x Plus Modems 4-2 November 1996 3920-A2-GN31-30 • Factory is a read-only (unchangeable) configuration area containing six sets of predefined configuration options labeled Sync Leased , Async Leased , TMp (T rellis Multipoint), Async Dial , Sync Dial , and UNIX Dial . If Sync Leased or Async Leased is selected, you must choose either [...]

DCP Configuration 4-3 3920-A2-GN31-30 November 1996 Configure Branch The Configure branch of the T op-Level menu contains all of the modem’ s configuration options which determine how the modem operates. These configuration options are accessed by scrolling down and across various levels of the Configure branch. “Status” Status PList Control [...]

COMSPHERE 392x Plus Modems 4-4 November 1996 3920-A2-GN31-30 The Configure branch consists of the following three levels: • Ld EditAr ea frm . Allows the selection of the Active (Operating), Active (Saved), Customer 1, Customer 2, and Factory configuration areas. • Choose Function . Allows you to make changes (Edit) to existing configuration op[...]

DCP Configuration 4-5 3920-A2-GN31-30 November 1996 F1 Ld Fact Preset: > Sync_Leased F2 F3 Select Sync_Leased. F1 Choose Mode: Answer Originate F2 F3 Select Answer . F1 Choose Function: Edit Save F2 F3 Select Edit. F1 Edit StrapGroup: > DTE_Interface F2 F3 F1 Edit StrapGroup T est Misc F2 F3 Scroll across the LCD and select the Misc configura[...]

COMSPHERE 392x Plus Modems 4-6 November 1996 3920-A2-GN31-30 F1 StrapsWhenDisc > Nxt No_Change F2 F3 F1 RemAccssPasswrd: N x t  0 0000000 F2 F3 Select Nxt until RemAccssPasswrd appears. F1 RemAccssPasswrd: N x t  1 0000000 F2 F3 Select the F2 (  ) key to increment password values. F1 RemAccssPasswrd: N x t  10 000000 F2 F3 Press t[...]

DCP Configuration 4-7 3920-A2-GN31-30 November 1996 To save the new password to a configuration area, make the following selections: F1 RemAccssPasswrd: N x t  12345678 F2 F3 Press the key to scroll up (twice). F1 Choose Function Edit Save F2 F3 Select Save. F1 Sav EditArea to > Active(Saved) F2 F3 Select a configuration area (Active (Saved),[...]

COMSPHERE 392x Plus Modems 4-8 November 1996 3920-A2-GN31-30 Configuration T ables Each modem operates in either the Multiport or Singleport mode depending on the modem’ s configuration (refer to 392xPlus Operational Modes in Chapter 1 ) . The modem’ s configuration options are arranged into six groups in the Multiport mode, and nine groups in [...]

DCP Configuration 4-9 3920-A2-GN31-30 November 1996 DTE Interface DTE Dialer Line Dialer AutoAnswerRing# Dialer T ype DialT one Detect Blind Dial Paus BusyT one Detect "," Pause T ime NoAnswer Timout Fast Disconnect Line Crnt Disc Long Space Disc No Carrier Disc No Data Disc Auto Make Busy Dial Line Leased_Line LeaseModulation LeasedLine [...]

COMSPHERE 392x Plus Modems 4-10 November 1996 3920-A2-GN31-30 DTE Interface — Multiport Mode l The DTE Interface configuration options contain EIA-232-D (CCITT V .24) and asynchronous character format information essential for maintaining a connection and for transmitting data between the DTEs and the modem. T able 4-1 shows each DTE Interface co[...]

DCP Configuration 4-1 1 3920-A2-GN31-30 November 1996 T able 4-1 (2 of 9) DTE Interface Configuration Options — Multiport Mode l Bakup_TXClk_Src: Internal Nxt Internal RXC_Loop Port1 Port2 Port3 Port4 This configuration option only appears when Dual_Leased_Ln is configured for Enable. Backup T ransmit Clock Source. Selects the clock reference sou[...]

COMSPHERE 392x Plus Modems 4-12 November 1996 3920-A2-GN31-30 T able 4-1 (3 of 9) DTE Interface Configuration Options — Multiport Mode l Port Rate Sub-Group (One for Each Port) NOTE: The Port Rate Sub Group configuration options are not available in Digital Bridge mode. Modem MSD: Disable Nxt/End Disable Enable This configuration option only appe[...]

DCP Configuration 4-13 3920-A2-GN31-30 November 1996 T able 4-1 (4 of 9) DTE Interface Configuration Options — Multiport Mode l Rate at 7200 Nxt Disable 7200 4800 2400 1200 Rate at 7200. When the modem rate is 7200 bps the port rate will be as selected by this configuration option (Disable or 7200 to 1200). The total for all ports cannot exceed t[...]

COMSPHERE 392x Plus Modems 4-14 November 1996 3920-A2-GN31-30 T able 4-1 (5 of 9) DTE Interface Configuration Options — Multiport Mode l Async OverSpeed: 1.0 % End 1.0 % 2.3 % This configuration option only appears when Async/Sync Mode is configured for Async. Asynchronous Overspeed. Provides rate compensation for asynchronous DTEs that may be op[...]

DCP Configuration 4-15 3920-A2-GN31-30 November 1996 T able 4-1 (6 of 9) DTE Interface Configuration Options — Multiport Mode l RTS Action: Stndrd_RS232 Nxt Stndrd_RS232 Ignore Sim_Cntl_Car Request-to-Send Action. RTS is a signal from the DTE indicating the DTE has data to send. Standard RS232 – Allows the DTE to control R TS to the modem in no[...]

COMSPHERE 392x Plus Modems 4-16 November 1996 3920-A2-GN31-30 T able 4-1 (7 of 9) DTE Interface Configuration Options — Multiport Mode l RTS/CTS Delay: 0msec Nxt 0msec 10msec 50msec 150msec 600msec 5 Request-to-Send/Clear-to-Send Delay . RTS/CTS Delay sets the delay time between the modem receiving R TS from the DTE and the modem sending CTS to t[...]

DCP Configuration 4-17 3920-A2-GN31-30 November 1996 T able 4-1 (8 of 9) DTE Interface Configuration Options — Multiport Mode l CT1 1 1 Control: Disable Nxt Disable Enable This configuration option does not appear when V .34 is enabled for a leased or dial line. CT1 1 1 Control. Used in conjunction with CT1 1 1 Rate Control. (Refer to the Mux Sub[...]

COMSPHERE 392x Plus Modems 4-18 November 1996 3920-A2-GN31-30 T able 4-1 (9 of 9) DTE Interface Configuration Options — Multiport Mode l Extend Main Ch.: Disable Nxt Disable Enable Primary data can only be extended one link. Extend Main Channel. Supports extended diagnostics. Specifies whether there is main (primary) channel connectivity between [...]

DCP Configuration 4-19 3920-A2-GN31-30 November 1996 Line Dialer — Multiport Mode l The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. T able 4-2 shows each Line Dialer configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem[...]

COMSPHERE 392x Plus Modems 4-20 November 1996 3920-A2-GN31-30 T able 4-2 (2 of 3) Line Dialer Configuration Options — Multiport Mode l “,” Pause Time: 2sec Nxt 2sec 4sec 6sec 8sec 10sec 20sec Pause T ime. Determines the number of seconds the modem pauses when it encounters a comma (,) in the dial command string. NoAnswer Timout: 45sec Nxt 45s[...]

DCP Configuration 4-21 3920-A2-GN31-30 November 1996 T able 4-2 (3 of 3) Line Dialer Configuration Options — Multiport Mode l No Carrier Disc: 2sec Nxt 2sec Disable 5sec 10sec 20sec No Carrier Disconnect. If the modem no longer receives carrier from the remote modem, it disconnects the call. This configuration option determines how long carrier i[...]

COMSPHERE 392x Plus Modems 4-22 November 1996 3920-A2-GN31-30 Dial Line — Multiport Mode l The Dial Line configuration options are used to configure the modem for operation over dial lines. T able 4-3 shows each Dial Line configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is[...]

DCP Configuration 4-23 3920-A2-GN31-30 November 1996 T able 4-3 (2 of 2) Dial Line Configuration Options — Multiport Mode l Dial Tx Level: Permissv(–9) Nxt Permissv(–9) –10 –1 1 –12 –13 –14 –15 –16 –17 –18 –19 –20 –21 –22 –23 –24 –25 –26 –27 –28 –29 –30 –31 –32 Dial T ransmit Level. Selects the mo[...]

COMSPHERE 392x Plus Modems 4-24 November 1996 3920-A2-GN31-30 Leased Line — Multiport Mode l The Leased Line configuration options only appear when the Sync Leased factory preset template is selected. They are used to configure the modem for operation over leased lines. T able 4-4 shows each Leased Line configuration option as it appears on the L[...]

DCP Configuration 4-25 3920-A2-GN31-30 November 1996 T able 4-4 (2 of 3) Leased Line Configuration Options — Multiport Mode l V32bis Override: Disable Nxt Disable 2400 This configuration option is ignored unless Leased-Line Rate is 4800(V32b). V .32bis Override. Activates the Paradyne Point-to-Point Diagnostic 2400 bps modulation. Allows the mode[...]

COMSPHERE 392x Plus Modems 4-26 November 1996 3920-A2-GN31-30 T able 4-4 (3 of 3) Leased Line Configuration Options — Multiport Mode l SpecialStandby: Disable Nxt Disable Enable This configuration option is only available if Automatic Dial Standby is configured for 15min, 1hr , 4hr or T est(2min) and Leased mode is configured for Originate mode, [...]

DCP Configuration 4-27 3920-A2-GN31-30 November 1996 T est — Multiport l The T est configuration option determines the duration of a test. T able 4-5 shows the T est configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem is just being installed) shown following the colon ( : ) o[...]

COMSPHERE 392x Plus Modems 4-28 November 1996 3920-A2-GN31-30 Misc — Multiport l The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. T able 4-6 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Sync Leased factory [...]

DCP Configuration 4-29 3920-A2-GN31-30 November 1996 T able 4-6 (2 of 3) Miscellaneous Configuration Options — Multiport Mode l Dir#1_Callback: Disable Nxt Disable Enable Directory Location 1 Callback. This configuration option controls whether or not the modem’ s single number callback function is used. Disable – Modem does not use the singl[...]

COMSPHERE 392x Plus Modems 4-30 November 1996 3920-A2-GN31-30 T able 4-6 (3 of 3) Miscellaneous Configuration Options — Multiport Mode l Diag Connection: Modem(DC) Nxt Modem(DC) NMS(CC) Disable This configuration option does not appear when the LeaseLine Rate is configured for TMp and NetworkPosition is configured for T ributary . Diagnostic Conn[...]

DCP Configuration 4-31 3920-A2-GN31-30 November 1996 Singleport Mode A In Singleport mode, the modem’ s configuration options are arranged into nine groups based on functionality: • DTE Interface (T able 4-7) • DTE Dialer (T able 4-8) • Line Dialer (T able 4-9) • Dial Line (T able 4-10) • Leased Line (T able 4-1 1) • V .42/MNP/Buffer [...]

COMSPHERE 392x Plus Modems 4-32 November 1996 3920-A2-GN31-30 DTE Interface Async/Sync Mode Async DTE Rate Asyn #Data Bits Asyn Parity Bit Asyn #Stop Bits DTR Action DSR Control RTS Action RTS Antistream CTS Control RTS/CTS Delay LSD Control Tx Clock Source Bakup_TXClk_Src XTXC Clamps TXC CT1 1 1_Rate Cntl DTE_Rate=VF Extend Main Ch. Upstream Port [...]

DCP Configuration 4-33 3920-A2-GN31-30 November 1996 DTE Interface — Singleport Mode A The DTE Interface configuration options contain EIA-232-D (CCITT V .24) and asynchronous character format information essential for maintaining a connection and for transmitting data between the DTE and the modem. T able 4-7 shows each DTE Interface configurati[...]

COMSPHERE 392x Plus Modems 4-34 November 1996 3920-A2-GN31-30 T able 4-7 (2 of 8) DTE Interface Configuration Options — Singleport Mode A Asyn #Data Bits: 8 Nxt 8 7 9(DirectMde) 6(DirectMde) This configuration option only appears when Async/Sync Mode is configured for Async. Asynchronous Number of Data Bits. Determines if the asynchronous data le[...]

DCP Configuration 4-35 3920-A2-GN31-30 November 1996 T able 4-7 (3 of 8) DTE Interface Configuration Options — Singleport Mode A DTR Action: Ignore Nxt Ignore Stndrd_RS232 CntrlsOnHook CntrlsTxMute Data T erminal Ready Action. DTR is a signal from the DTE to the modem indicating that the DTE is connected and ready for operation. Ignore – Modem [...]

COMSPHERE 392x Plus Modems 4-36 November 1996 3920-A2-GN31-30 T able 4-7 (4 of 8) DTE Interface Configuration Options — Singleport Mode A DSR Control: Stndrd_RS232 (Cont.) The A T command for Forced On is &S0. The A T command for Standard RS232 is &S1. The A T command for Wink When Disconnect is &S2. The A T command for Follows DTR is[...]

DCP Configuration 4-37 3920-A2-GN31-30 November 1996 T able 4-7 (5 of 8) DTE Interface Configuration Options — Singleport Mode A CTS Control: Stndrd_RS232 Nxt Stndrd_RS232 Forced_On WinkWhenDisc Follows_DTR Follows_RTS Clear-to-Send Control. CTS is a signal from the modem to the DTE indicating that it can accept data from the DTE. Standard RS232 [...]

COMSPHERE 392x Plus Modems 4-38 November 1996 3920-A2-GN31-30 T able 4-7 (6 of 8) DTE Interface Configuration Options — Singleport Mode A LSD Control: Stndrd_RS232 Nxt Stndrd_RS232 Forced_On WinkWhenDisc Follows_DTR Sim_Cntl_Car =DTR/DiscOFF Line Signal Detect Control. LSD is a signal indicating that the carrier signal is being received from the [...]

DCP Configuration 4-39 3920-A2-GN31-30 November 1996 T able 4-7 (7 of 8) DTE Interface Configuration Options — Singleport Mode A Bakup_TXClk_Src: Internal Nxt Internal External RXC_Loop This configuration option only appears in customized installations in which the Dual_Leased_Ln is configured for Enable and Async/Sync Mode is Sync. Backup T rans[...]

COMSPHERE 392x Plus Modems 4-40 November 1996 3920-A2-GN31-30 T able 4-7 (8 of 8) DTE Interface Configuration Options — Singleport Mode A Extend Main Ch.: Disable Nxt Disable Enable Primary data can only be extended one link. Extend Main Channel. This configuration option supports extended diagnostics. Specifies whether there is main (primary) ch[...]

DCP Configuration 4-41 3920-A2-GN31-30 November 1996 DTE Dialer — Singleport Mode A The DTE Dialer configuration options establish the DTE-to-modem protocol for call establishment and control. T able 4-8 shows each DTE Dialer configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the mode[...]

COMSPHERE 392x Plus Modems 4-42 November 1996 3920-A2-GN31-30 T able 4-8 (2 of 5) DTE Dialer Configuration Options — Singleport Mode A A T Escape Char: 043 ASCI Nxt  043 ASCI This configuration option only appears when DTE Dialer T ype is configured for A T . A T Escape Character . The escape sequence (+++) allows you to move from Data mode to[...]

DCP Configuration 4-43 3920-A2-GN31-30 November 1996 T able 4-8 (3 of 5) DTE Dialer Configuration Options — Singleport Mode A Linefeed Char: 010 ASCI Nxt  010 ASCI This configuration option only appears when DTE Dialer T ype is configured for A T . Line Feed Character . Sets the character used to perform a line feed in Command mode for respons[...]

COMSPHERE 392x Plus Modems 4-44 November 1996 3920-A2-GN31-30 T able 4-8 (4 of 5) DTE Dialer Configuration Options — Singleport Mode A ResultCode Form: Words Nxt Words Numbers (1) Numbers (2) This configuration option only appears when DTE Dialer T ype is configured for A T . Result Codes Format. Controls whether or not result codes appear as wor[...]

DCP Configuration 4-45 3920-A2-GN31-30 November 1996 T able 4-8 (5 of 5) DTE Dialer Configuration Options — Singleport Mode A V25bis IdleFill: Mark Nxt Mark Flag This configuration option only appears when DTE Dialer is configured for V .25bis HDLC. V .25bis Idle Fill. Determines whether a mark or flag is used as an idle fill character for the DT[...]

COMSPHERE 392x Plus Modems 4-46 November 1996 3920-A2-GN31-30 Line Dialer — Singleport Mode A The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. T able 4-9 shows each Line Dialer configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if[...]

DCP Configuration 4-47 3920-A2-GN31-30 November 1996 T able 4-9 (2 of 4) Line Dialer Configuration Options — Singleport Mode A BusyT one Detect: Enable Nxt Enable Disable Busy T one Detect. Sets the modem to monitor for Busy T one (Enable) or ignore Busy T one (Disable). NOTE: This configuration option is normally enabled; however , if the modem [...]

COMSPHERE 392x Plus Modems 4-48 November 1996 3920-A2-GN31-30 T able 4-9 (3 of 4) Line Dialer Configuration Options — Singleport Mode A Long Space Disc: Enable Nxt Enable Disable Long Space Disconnect. Determines the modem’ s response to a continuous spacing condition sent from the remote modem before it goes on-hook. Issuing a long space is on[...]

DCP Configuration 4-49 3920-A2-GN31-30 November 1996 T able 4-9 (4 of 4) Line Dialer Configuration Options — Singleport Mode A Auto Make Busy: Disable Nxt Disable Enable This option is only valid on Model 3921 Plu s. Automatic Make Busy . Forces the modem to go of f-hook under the following conditions: if a local analog loopback is performed, a s[...]

COMSPHERE 392x Plus Modems 4-50 November 1996 3920-A2-GN31-30 Dial Line — Singleport Mode A The Dial Line configuration options are used to configure the modem for operation over dial lines. T able 4-10 shows each Dial Line configuration option as it appears on the LCD, with the Sync Leased factory default setting (the default value if the modem [...]

DCP Configuration 4-51 3920-A2-GN31-30 November 1996 T able 4-10 (2 of 3) Dial Line Configuration Options — Singleport Mode A Automode: Enable Nxt Enable Disable System 85 This configuration option only appears when Dial Line Rate is configured for V .32 or V .34 families data rate. Automode. The modem automatically adapts to the modulation schem[...]

COMSPHERE 392x Plus Modems 4-52 November 1996 3920-A2-GN31-30 T able 4-10 (3 of 3) Dial Line Configuration Options — Singleport Mode A V22b Guard T one: Disable Nxt Disable 550Hz 1800Hz This configuration option only appears when Dial Line Rate is configured for V .22bis or V .22 data rate, or when Automode is configured for Enable. V .22bis Guar[...]

DCP Configuration 4-53 3920-A2-GN31-30 November 1996 Leased Line — Singleport Mode A The Leased Line configuration options only appear when the Sync Leased factory preset template is selected. They are used to configure the modem for operation over leased lines. T able 4-1 1 shows each Leased Line configuration option as it appears on the LCD, wi[...]

COMSPHERE 392x Plus Modems 4-54 November 1996 3920-A2-GN31-30 T able 4-1 1 (2 of 5) Leased Line Configuration Options— Singleport Mode A LeasedLine Rate: 28800(V34) (Cont.) 4800(V27bis), 2400(V27bis) – This modulation scheme is available on 2-wire (half-duplex) and 4-wire leased lines. NOTE: It is recommended that both modems use the same fixed[...]

DCP Configuration 4-55 3920-A2-GN31-30 November 1996 T able 4-1 1 (3 of 5) Leased Line Configuration Options— Singleport Mode A Leased Tx Level: 0 Nxt 0 –1 –2 –3 – 4 – 5 – 6 –7 – 8 – 9 –10 –1 1 –12 –13 –14 –15 Leased T ransmit Level. Selects the modem’ s transmit power level over leased lines. The transmit output l[...]

COMSPHERE 392x Plus Modems 4-56 November 1996 3920-A2-GN31-30 T able 4-1 1 (4 of 5) Leased Line Configuration Options— Singleport Mode A SpecialStandby: Disable Nxt Disable Enable This configuration option only appears when Automatic Dial Standby is configured for 15min, 1hr , 4hr or T est(2min) and Leased mode is configured for Originate mode, o[...]

DCP Configuration 4-57 3920-A2-GN31-30 November 1996 T able 4-1 1 (5 of 5) Leased Line Configuration Options— Singleport Mode A V29 Link Config: PointT oPoint Nxt PointT oPoint Multipoint This configuration option only appears when Leased-Line Rate is configured for V29. V .29 Link Configuration. Selects point-to-point or multipoint operation. NO[...]

COMSPHERE 392x Plus Modems 4-58 November 1996 3920-A2-GN31-30 V .42/MNP/Buffer — Singleport Mode A V .42/MNP/Buffer configuration options determine the type of error correction and flow control used by the modems and attached DTEs. Some choices within this group may not appear depending upon how previous configuration options have been selected. [...]

DCP Configuration 4-59 3920-A2-GN31-30 November 1996 T able 4-12 (2 of 6) V .42/MNP/Buffer Configuration Options — Singleport Mode A Err Contrl Mode: V .42/MNPorBfr (Cont.) The A T command for Buffer Mode is N0. The A T command for Direct Mode is N1. The A T command for MNP or Disconnect is N2. The A T command for MNP or Buffer is N3. The A T[...]

COMSPHERE 392x Plus Modems 4-60 November 1996 3920-A2-GN31-30 T able 4-12 (3 of 6) V .42/MNP/Buffer Configuration Options — Singleport Mode A EC Fallbck Char: 013 ASCI Nxt  013 ASCI This configuration option only appears when Async/Sync Mode is configured for Async, and EC Negotiate Buffer is not configured for Disable. Error Control Fallback [...]

DCP Configuration 4-61 3920-A2-GN31-30 November 1996 T able 4-12 (4 of 6) V .42/MNP/Buffer Configuration Options — Singleport Mode A XON/XOFF Psthru: Disable Nxt Disable Enable This configuration option only appears when Async/Sync Mode is configured for Async, and Flow Control of Modem is configured for XON/XOFF Psthru. XON/XOFF Passthrough. Con[...]

COMSPHERE 392x Plus Modems 4-62 November 1996 3920-A2-GN31-30 T able 4-12 (5 of 6) V .42/MNP/Buffer Configuration Options — Singleport Mode A Send Break Cntl: Data_First End Data_First Break_First This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control Mode is not configured for DirectMode. Send Brea[...]

DCP Configuration 4-63 3920-A2-GN31-30 November 1996 T able 4-12 (6 of 6) V .42/MNP/Buffer Configuration Options — Singleport Mode A CellularEnhance: Disable Nxt Disable Enable This configuration option only appears when Async/Sync Mode is configured for Async, and Error Control Mode is configured for V42/MNPorBfr , V42/MNPorDsc, LAPM_or_Disc, or[...]

COMSPHERE 392x Plus Modems 4-64 November 1996 3920-A2-GN31-30 T est — Singleport Mode A The T est configuration options determine specifics, such as the duration of a test, for the various diagnostic tests available to the modem. T able 4-13 shows each T est configuration option as it appears on the LCD, with the Sync Leased factory default setti[...]

DCP Configuration 4-65 3920-A2-GN31-30 November 1996 T able 4-13 (2 of 2) T est Configuration Options — Singleport Mode A V54 Address: Disable Nxt Disable (Address V alues) V .54 Address. Determines which remote 392x Plus modem is placed into a remote loopback test. This test can be either a remote digital loopback or local analog loopback. This [...]

COMSPHERE 392x Plus Modems 4-66 November 1996 3920-A2-GN31-30 Misc — Singleport Mode A The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. T able 4-14 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Sync Leased f[...]

DCP Configuration 4-67 3920-A2-GN31-30 November 1996 T able 4-14 (2 of 3) Miscellaneous Configuration Options — Singleport Mode A Access frm Remt: Enable Nxt Enable Disable Access from Remote. Determines if your modem’ s DCP can be accessed by a remote modem via the VF line. CAUTION: If this configuration option is disabled, the modem cannot be[...]

COMSPHERE 392x Plus Modems 4-68 November 1996 3920-A2-GN31-30 T able 4-14 (3 of 3) Miscellaneous Configuration Options — Singleport Mode A NetworkPosition: T ributary End T ributary Control Network Position Identification. Each modem must be identified either as a control modem or a tributary modem. NOTE: Changes to this configuration option will[...]

5-1 3920-A2-GN31-30 November 1996 A T Command Set and S-Registers Overview 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 5-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switching Between Data Mode and Online Command Mode 5-1[...]

COMSPHERE 392x Plus Modems 5-2 November 1996 3920-A2-GN31-30 Escape Sequence and Escape Guard Time The escape sequence is only issued when the modem is online and in Data mode. The 392x Plus modems use three consecutive plus ( + ) characters as the escape sequence. (T o change this value, refer to S-Register S2 discussed later in T able 5-3 in the [...]

A T Command Set and S-Registers 5-3 3920-A2-GN31-30 November 1996 Result Codes T able 5-1 lists all valid result codes for the 392x Plus modems. T able 5-1 (1 of 2) Result Codes Numbers (1) Numbers (2) Word Description 0 0 OK Command executed 1 1 CONNECT Modem connected to line 2 2 RING Modem receiving a ring voltage from the VF line 3 3 NO CARRIER[...]

COMSPHERE 392x Plus Modems 5-4 November 1996 3920-A2-GN31-30 T able 5-1 (2 of 2) Result Codes Numbers (1) Description Word Numbers (2) 22 12 CONNECT 9600/ EC**** Connection at 9600 bps with error control 23 16 CONNECT 12000/ EC**** Connection at 12,000 bps with error control 24 13 CONNECT 14400/ EC**** Connection at 14,400 bps with error control 25[...]

A T Command Set and S-Registers 5-5 3920-A2-GN31-30 November 1996 A T Command List A T commands are issued from an asynchronous DTE, such as a PC, and control the modem’ s operation and software configuration. A T commands are only applicable when the DTE Dialer T ype configuration option is set for A T . (Refer to the &M n and &Q n comma[...]

COMSPHERE 392x Plus Modems 5-6 November 1996 3920-A2-GN31-30 T able 5-2 (1 of 9) 392x Plus A T Commands AT Command Description DCP LCD Command Sequence A/ Repeat Last Command. Reexecutes last command string. (Not to be preceded with A T or followed by pressing the Return key .) Call Setup Answer A Answer Mode. Goes of f-hook and attempts to establ[...]

A T Command Set and S-Registers 5-7 3920-A2-GN31-30 November 1996 T able 5-2 (2 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description DS= n Dial Stored Number . Dials the number stored in Location n (1–24). (T o store a telephone number , refer to the & Zn=x command.) Call SetupDial Dial Directory: E n Command Charact[...]

COMSPHERE 392x Plus Modems 5-8 November 1996 3920-A2-GN31-30 T able 5-2 (3 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description X n Extended Result Code, Dial T one Detect, and Busy T one Detect Configuration Options. Extended Dial T one Busy T one Result Code: Detect: Detect: X0 Disable Disable Disable X1 Enable Disable Dis[...]

A T Command Set and S-Registers 5-9 3920-A2-GN31-30 November 1996 T able 5-2 (4 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description &C n LSD Control. &C0 Forced On. LSD ON at all times. &C1 Standard RS232. LSD is ON when the remote modem’s carrier signal is detected. LSD is OFF when carrier signal is not detec[...]

COMSPHERE 392x Plus Modems 5-10 November 1996 3920-A2-GN31-30 T able 5-2 (5 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description &G n V .22bis Guard T one. &G0 Disable. &G1 550 Hz. &G2 1800 Hz. ConfigureEdit Dial Line NOTE: The V .22bis Guard T one cannot be disabled in some countries. & I n Dial T rans[...]

A T Command Set and S-Registers 5-1 1 3920-A2-GN31-30 November 1996 T able 5-2 (6 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description &M n and &Q n Async/Sync Mode and DTE Dialer T ype. &M0, &Q0 Modem operates in Asynchronous mode using A T Command protocol. &M1, &Q1 Modem operates in Synchronous mod[...]

COMSPHERE 392x Plus Modems 5-12 November 1996 3920-A2-GN31-30 T able 5-2 (7 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description &T n T ests. &T0 Abort. Stops any test in progress. &T1 Local Analog Loop. &T2 Pattern. Transmits and receives a 51 1 Bit Error Rate T est (BERT). &T3 Local Digital Loopback tes[...]

A T Command Set and S-Registers 5-13 3920-A2-GN31-30 November 1996 T able 5-2 (8 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description &Z n=x Store T elephone Numbers. Modem saves the telephone numbers and dial command modifiers (if any) entered for x (up to 40 characters in length) in Directory Location n (1–24). For e[...]

COMSPHERE 392x Plus Modems 5-14 November 1996 3920-A2-GN31-30 T able 5-2 (9 of 9) 392x Plus A T Commands AT Command DCP LCD Command Sequence Description N n Error Control Mode. N0 Buffer Mode. N1 Direct Mode. N2 MNP or Disconnect. N3 MNP or Buffer . N4 V .42/MNP or Disconnect. N5 V .42/MNP or Buffer . N6 LAPM or Disconnect. N7 LAPM or Buff[...]

A T Command Set and S-Registers 5-15 3920-A2-GN31-30 November 1996 S-Register List S-Registers af fect the operating parameters of the 392x Plus modems. S-Registers are only applicable when the DTE Dialer T ype configuration option is set for A T . (Refer to the &M n and &Q n commands.) T able 5-3 lists all S-Registers supported by the 392x[...]

COMSPHERE 392x Plus Modems 5-16 November 1996 3920-A2-GN31-30 T able 5-3 (1 of 12) 392x Plus S-Registers S-Register Description DCP LCD Command Sequence S0 Auto-Answer Ring Number 1 . Register determines number of rings the modem will count before automatically answering a call. Enter zero (0) if you do not want the modem to automatically answer an[...]

A T Command Set and S-Registers 5-17 3920-A2-GN31-30 November 1996 T able 5-3 (2 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S12 Escape Guard Time. Register sets the value (in 20-millisecond increments) for the required pause before and after the escape sequence is issued. The guard time prevents the modem from inte[...]

COMSPHERE 392x Plus Modems 5-18 November 1996 3920-A2-GN31-30 T able 5-3 (3 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S41 Dial-Line Rate. Register determines the modem’ s data rate and modulation scheme for operation on dial lines. Register has the following values: 1 = 14,400 (V .32bis) 2 = 12,000(V .32bis) 3 =[...]

A T Command Set and S-Registers 5-19 3920-A2-GN31-30 November 1996 T able 5-3 (4 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S44 Leased-Line Rate. Register determines the modem’ s data rate and modulation scheme for operation on either 2-wire or 4-wire leased lines in either Answer or Originate mode. Register has [...]

COMSPHERE 392x Plus Modems 5-20 November 1996 3920-A2-GN31-30 T able 5-3 (5 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S46 Auto Dial Backup. Register determines if the modem performs an automatic dial backup if the leased lines fail. Register has the following values: 0 = Disable 1 = Enable The factory setting is D[...]

A T Command Set and S-Registers 5-21 3920-A2-GN31-30 November 1996 T able 5-3 (6 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S52 DTE LL (CT141). Register determines if the modem performs a local analog loopback if it receives a CT141 signal from the DTE. Register has the following values: 0 = Disable 1 = Enable The [...]

COMSPHERE 392x Plus Modems 5-22 November 1996 3920-A2-GN31-30 T able 5-3 (7 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S61 CT1 1 1 Rate Control. Register determines if CT1 1 1 Rate is disabled, set for Fallback 1 or Fallback 2. CT1 1 1 Rate allows the DTE to control modem rate via Pin 23 of the EIA-232-D interface.[...]

A T Command Set and S-Registers 5-23 3920-A2-GN31-30 November 1996 T able 5-3 (8 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S66 NMS Call Messages. Register determines if the modem sends information regarding status (Call Progress) and/or sends summarized call statistics (Call Connect) to the 6700 Series Network Man[...]

COMSPHERE 392x Plus Modems 5-24 November 1996 3920-A2-GN31-30 T able 5-3 (9 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S74 Network Position Identification. Register identifies each modem as either a control or tributary modem. Register has the following values: 0 = T ributary 1 = Control The factory setting is T ri[...]

A T Command Set and S-Registers 5-25 3920-A2-GN31-30 November 1996 T able 5-3 (10 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S85 Fast Disconnect. Register allows the modem to disconnect immediately after receiving a disconnect command from a local DTE or its own diagnostic control panel. Register has the following [...]

COMSPHERE 392x Plus Modems 5-26 November 1996 3920-A2-GN31-30 T able 5-3 (1 1 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S91 Cellular Enhancement. Register allows the modem to use non-standard techniques to enhance V .42 operation for cellular applications. It is still compatible, however , with modems which do not[...]

A T Command Set and S-Registers 5-27 3920-A2-GN31-30 November 1996 T able 5-3 (12 of 12) 392x Plus S-Registers S-Register DCP LCD Command Sequence Description S96 Trellis Multipoint (TMp) Tx Preemphasis. Provides amplification for frequencies above the carrier frequency to compensate for high frequency line attenuation. Register has the following v[...]

6-1 3920-A2-GN31-30 November 1996 Dial Access Security Chapter 6, Dial Access Security , is not available for viewing online because it contains security-sensitive information. Dial Access Security information is available in the COMSPHERE 392x Plus Modems Models 3920 Plus and 3921 Plus Installation and Operation Manual, Document No. 3920-A2-GN31-3[...]

A-1 3920-A2-GN31-30 November 1996 Menu T ree Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Pages A-2 and A-3 provide a menu tree for the 392x Plus modems. A[...]

COMSPHERE 392x Plus Modems A-2 November 1996 3920-A2-GN31-30 Displays current status of modem along with data rate and error control mode. “Status” Status Configure PList Ld EditArea frm: Display Clear Change Add Acquire Activ (Operating) Customer2 Factory Customer1 Active (Saved) DeviceHS VF Identity DTE Options Record (T ributary only) Active[...]

Menu T ree A-3 3920-A2-GN31-30 November 1996 Y z z Y Y Y Y Y Y Y Y Y Y Y z Y Control SubHS Call_Setup Tlk/Data Remote Security T est (Dial Backup only) Dial Answer Change_Directory Disconnect Dial_Standby or Return_to_Dial Directory Locations 1 – 24 Choos e A ddress (TM p C ontro l o nly) Choos e P assword (TM p o nly) (No t i n TM p T rib) Secon[...]

B-1 3920-A2-GN31-30 November 1996 T roubleshooting Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview This appendix points out basic problems that can occur when operating a 392x Plus modem. Use T ables B-1 through B-6 to check out these problems. If you are having data comm[...]

COMSPHERE 392x Plus Modems B-2 November 1996 3920-A2-GN31-30 T able B-2 Leased-Line Operation Symptom Action The modems do not train-up on leased lines. V erify that the correct cabling is used for your application. Refer to Chapter 2, Modem Installation . V erify that one modem is configured for Answer mode and the other is configured for Originat[...]

T roubleshooting B-3 3920-A2-GN31-30 November 1996 T able B-4 Modem — DTE Connection Symptom Action The modem does not accept or echo back A T commands. V erify that the cable between the Async port of the DTE and the modem is a standard RS-232 cable. (Null modem cables, also known as crossover cables, do not work in this application.) V erify th[...]

COMSPHERE 392x Plus Modems B-4 November 1996 3920-A2-GN31-30 T able B-5 (1 of 2) Modem — VF Connection Symptom Action The modem does not receive a dial tone. Attach a telephone directly to the telephone line to verify that a dial tone exists. Make sure the VF line is connected to the modem’ s rear jack labeled DIAL. The modem does not go of f-h[...]

T roubleshooting B-5 3920-A2-GN31-30 November 1996 T able B-5 (2 of 2) Modem — VF Connection Symptom Action Intermittent disconnects, high error rates, or excessive retransmissions occur . Perform an End-to-End test. Refer to Pattern located in the T est Branch section of Chapter 3. The modem establishes and then disconnects the call. Y ou may ha[...]

C-1 3920-A2-GN31-30 November 1996 Pin Assignments Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EIA-232-D Pin Assignments C-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF Connector Pin Assignments C-3 . . . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 392x Plus Modems C-2 November 1996 3920-A2-GN31-30 EIA-232-D Pin Assignments T able C-1 lists the EIA-232-D pin assignments for the modem. T able C-1 EIA-232-D Pin Assignments Pin Name EIA Circuit CCITT Signal Source Circuit Function 1 — AA 101 — Shield 2 TXD BA 103 DTE T ransmit Data 3 RXD BB 104 DCE Receive Data 4 RTS CA 105 DTE Req[...]

Pin Assignments C-3 3920-A2-GN31-30 November 1996 VF Connector Pin Assignments T able C-2 lists the connector pin assignments for Model 3920 Plus modular jacks as well as the pin assignments for the TELCO jacks. (See Figure C-1.) T able C-2 VF Connector Pin Assignments T ype of T elco Jack Pin Leased Dial RJ1 1 JM8 6-Pin Leased 1 4-Wire: TX 2-Wire:[...]

COMSPHERE 392x Plus Modems C-4 November 1996 3920-A2-GN31-30 Auxiliary Cables Not Supplied T o add an external telephone to your modem, use an external “Y” cable to connect the phone line to both the modem and the telephone (Figure C-2). Figure C-2. Wiring Diagram — “Y” Cable for External T elephone[...]

Pin Assignments C-5 3920-A2-GN31-30 November 1996 For 2-wire leased-line connections to a JM8 network interface, use an 8-position to 6-position crossover cable (Figure C-3) according to the following FCC requirements: “The RJ series of jacks should not be used for connecting data equipment to nonswitched private line networks — specifically , [...]

COMSPHERE 392x Plus Modems C-6 November 1996 3920-A2-GN31-30 To connect a Model 3920 Plus port to another modem’ s EIA-232-D interface, use a 25-pin crossover cable (Figure C-4). 1 2 3 4 5 6 7 8 25-POSITION PLUG PIN NO. 25-POSITION PLUG PIN NO. 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21[...]

D-1 3920-A2-GN31-30 November 1996 CCITT V .25bis Dialing Command and Responses Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands D-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request with Number Provided (CRN) D-2 . [...]

COMSPHERE 392x Plus Modems D-2 November 1996 3920-A2-GN31-30 Call Request Commands Call Request commands are issued from the DTE to the modem and are responsible for initiating dial calls. Call Request commands include Call Request with Number Provided (CRN) and Call Request with Stored Memory Address Provided (CRS). Call Request with Number Provid[...]

CCITT V .25bis Dialing D-3 3920-A2-GN31-30 November 1996 ET is similar to the Call Failure Messages Busy Signal and T runk Busy and the result code BUSY . NS is similar to the Common Operational Message Invalid Number and the result code ERROR. CB is similar to the Call Failure Messages Dial Line in Use and No Dial-T est and the result code ERROR. [...]

COMSPHERE 392x Plus Modems D-4 November 1996 3920-A2-GN31-30 Connect Incoming Call (CIC) The CIC command forces the modem to cancel any DIC commands and answer an incoming call. This command is only valid when the DTE issues a DIC command. CIC must be issued within 10 seconds after sending a DIC. CIC is similar to the A T A command. The CIC command[...]

CCITT V .25bis Dialing D-5 3920-A2-GN31-30 November 1996 Request List of Stored Numbers (RLN) The Request List of Stored Numbers (RLN) command displays telephone numbers stored in the modem’ s directory location. If the RLN command is entered without specifying a directory location, then all directory locations and telephone numbers appear . If a[...]

COMSPHERE 392x Plus Modems D-6 November 1996 3920-A2-GN31-30 Command Response A Command Response indicates that the command entered was a valid or invalid entry . Command Response includes V alid (V AL) and Invalid (INV). V alid (V AL) The V AL response indicates that the modem has accepted the V .25bis command issued by the DTE. V AL is similar to[...]

CCITT V .25bis Dialing D-7 3920-A2-GN31-30 November 1996 T able D-1 (2 of 2) V .25bis Commands V .25bis Command A T Command/ S-Register Equivalent Description List Request RLD Request to List Delayed Numbers NONE RLF Request to List Forbidden Numbers NONE RLN Request to List Stored Numbers NONE List Response LSD List Delayed Numbers NONE LSF List F[...]

E-1 3920-A2-GN31-30 November 1996 ASCII Character T able Overview E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview T able E-1 in this appendix provides the ASCII character table. T able E-1 (1 of 4) ASCII Characters Hexadecimal ASCII V alue Decimal ASCII V alue Control Character Ke[...]

COMSPHERE 392x Plus Modems E-2 November 1996 3920-A2-GN31-30 T able E-1 (2 of 4) ASCII Characters Hexadecimal ASCII V alue Key Control Character Decimal ASCII V alue 17 023 ETB CTRL-W 18 024 CAN CTRL-X 19 025 EM CTRL-Y 1A 026 SUM CTRL-Z 1B 027 ESC CTRL-[ 1C 028 FS CTRL-/ 1D 029 GS CTRL-] 1E 030 RS CTRL-|Ax 1F 031 US CTRL-_ 20 032 spacebar 21 033 ! [...]

ASCII Character T able E-3 3920-A2-GN31-30 November 1996 T able E-1 (3 of 4) ASCII Characters Hexadecimal ASCII V alue Key Control Character Decimal ASCII V alue 3E 062 > 3F 063 ? 40 064 @ 41 065 A 42 066 B 43 067 C 44 068 D 45 069 E 46 070 F 47 071 G 48 072 H 49 073 I 4A 074 J 4B 075 K 4C 076 L 4D 077 M 4E 078 N 4F 079 O 50 080 P 51 081 Q 52 08[...]

COMSPHERE 392x Plus Modems E-4 November 1996 3920-A2-GN31-30 T able E-1 (4 of 4) ASCII Characters Hexadecimal ASCII V alue Key Control Character Decimal ASCII V alue 65 101 e 66 102 f 67 103 g 68 104 h 69 105 i 6A 106 j 6B 107 k 6C 108 l 6D 109 m 6E 11 0 n 6F 111 o 70 11 2 p 71 11 3 q 72 11 4 r 73 11 5 s 74 11 6 t 75 11 7 u 76 11 8 v 77 11 9 w 78 1[...]

F-1 3920-A2-GN31-30 November 1996 Default Configuration Options Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview T able F-1 lists the six sets of default (preset) configuration options, labeled Sync Leased , Async Leased , TMp (T rellis Multipoint), Async Dial , Sync Dial [...]

COMSPHERE 392x Plus Modems F-2 November 1996 3920-A2-GN31-30 T able F-1 (1 of 10) Factory Default Configuration Options Configuration Option Sync Leased Default Settings Async Leased Default Settings TMp Default Settings Async Dial Default Settings UNIX Dial Default Settings Sync Dial Default Settings DTE Interface (Multiport mode) MUX Sub-group MU[...]

Default Configuration Options F-3 3920-A2-GN31-30 November 1996 T able F-1 (2 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings Port Rate Sub-group (Cont’d) Rate at 14.4 [...]

COMSPHERE 392x Plus Modems F-4 November 1996 3920-A2-GN31-30 T able F-1 (3 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings Port EIA Sub-group (Cont’d) CTS Control Stand[...]

Default Configuration Options F-5 3920-A2-GN31-30 November 1996 T able F-1 (4 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings DTE Interface (Singleport mode Cont’d) Tx [...]

COMSPHERE 392x Plus Modems F-6 November 1996 3920-A2-GN31-30 T able F-1 (5 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings DTE Dialer l (Cont’d) Result Codes Format Wor[...]

Default Configuration Options F-7 3920-A2-GN31-30 November 1996 T able F-1 (6 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings Dial Line Dial Modulation V .34 V .34 V .34 [...]

COMSPHERE 392x Plus Modems F-8 November 1996 3920-A2-GN31-30 T able F-1 (7 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings Lease Line (Cont’d) V .27bis T rain Fl Short [...]

Default Configuration Options F-9 3920-A2-GN31-30 November 1996 T able F-1 (8 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings V .42 / MNP / Buffer l †† Error Control [...]

COMSPHERE 392x Plus Modems F-10 November 1996 3920-A2-GN31-30 T able F-1 (9 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings T est DTE RL (CT140) lF Disable Disable Disabl[...]

Default Configuration Options F-1 1 3920-A2-GN31-30 November 1996 T able F-1 (10 of 10) Factory Default Configuration Options Configuration Option Sync Dial Default Settings UNIX Dial Default Settings Async Dial Default Settings TMp Default Settings Async Leased Default Settings Sync Leased Default Settings Security l Entry W ait T ime 20 sec 20 se[...]

G-1 3920-A2-GN31-30 November 1996 Sample Configurations Overview G-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Point-to-Point G-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuration Options G-2 . . . . . . . . . . . . . . . . . [...]

COMSPHERE 392x Plus Modems G-2 November 1996 3920-A2-GN31-30 Point-to-Point Figure G-1 shows a sample configuration for point-to-point applications. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 Cable 1 Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 DTE (Sync) DTE (Sync) DTE (Sync) DTE (Sync) DT[...]

Sample Configurations G-3 3920-A2-GN31-30 November 1996 Sample Port Rate T able Port Rate Port 1 Port 2 Port 3 Port 4 28.8K 9600 9600 4800 4800 24.0K 9600 Disable 4800 4800 19.2K 9600 Disable 4800 4800 16.8K 9600 Disable Disable 4800 14.4K 9600 Disable Disable 4800 12.0K Disable Disable Disable 4800 9.6K Disable Disable Disable 4800 7.2K Disable Di[...]

COMSPHERE 392x Plus Modems G-4 November 1996 3920-A2-GN31-30 Extended Point-to-Point Figure G-2 shows a sample configuration for extended point-to-point applications. DTE (Sync) Cable 1 Cable 2 Cable 2 Leased 4800(V32b) 4800(V32b) TX TX Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 Cable 1 Ca[...]

Sample Configurations G-5 3920-A2-GN31-30 November 1996 3910 A Use Sync Leased (Answer) default configuration options with the following exceptions: TX Clock Sour ce Set to External. LeasedLine Rate Set to 4800(V32b). Autorate (Leased Line) Set to Disable. 3910 B Use Sync Leased (Originate) default configuration options with the following exception[...]

COMSPHERE 392x Plus Modems G-6 November 1996 3920-A2-GN31-30 Extended Multipoint Figure G-3 shows a sample configuration for extended multipoint applications. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 Cable 1 Cable 1 Cable 1 Cable 3 9600 9600 4800 4800 DTE (Sync) DTE (Sync) DTE (Sync) DTE[...]

Sample Configurations G-7 3920-A2-GN31-30 November 1996 Configuration Options 3920 Plus A Use Sync Leased (Answer) default configuration options with the following exception: Rate Refer to Sample Port Rate T able in this section. 3920 Plus B Use Sync Leased (Originate) default configuration options with the following exceptions: TX Clock Sour ce Se[...]

COMSPHERE 392x Plus Modems G-8 November 1996 3920-A2-GN31-30 Cables Cable 1 Use a standard, customer -supplied, EIA-232-D/V .24 cable with a DB-25-P (plug) connector at one end to attach to the modem. Attach this to the connector labeled DTE1 , 2 , 3 , or 4 . Cable 2 Use part number 125-0053-1431 (an 8-position, 8-wire modular cord that is supplied[...]

Sample Configurations G-9 3920-A2-GN31-30 November 1996 Configuration Options 3920 Plus A Use Sync Leased (Answer) default configuration options with the following exception: Auto Dial Back Set to Enable. Rate Refer to Sample Port Rate T able in this section. 3920 Plus B Use Sync Leased (Originate) default configuration options with the following e[...]

COMSPHERE 392x Plus Modems G-10 November 1996 3920-A2-GN31-30 Point-to-Point with Network Management Figure G-5 shows a sample configuration for point-to-point applications with network management. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 Cable 1 Cable 1 Cable 1 Cable 1 9600 9600 4800 48[...]

Sample Configurations G-1 1 3920-A2-GN31-30 November 1996 Sample Port Rate T able Port Rate Port 1 Port 2 Port 3 Port 4 28.8K 9600 9600 4800 4800 24.0K 9600 Disable 4800 4800 19.2K 9600 Disable 4800 4800 16.8K 9600 Disable Disable 4800 14.4K 9600 Disable Disable 4800 12.0K Disable Disable Disable 4800 9.6K Disable Disable Disable 4800 7.2K Disable [...]

COMSPHERE 392x Plus Modems G-12 November 1996 3920-A2-GN31-30 Carrier with Network Management Figure G-6 shows a sample configuration for COMSPHERE 3000 Series Carrier applications with network management. Cable 1 Cable 2 Cable 2 Leased 28800(V34) 28800(V34) TX TX Cable 1 Cable 1 Cable 1 9600 9600 4800 4800 Cable 1 Cable 1 Cable 1 Cable 1 9600 9600[...]

Sample Configurations G-13 3920-A2-GN31-30 November 1996 Configuration Options 3921 Plus Use Sync Leased (Answer) default configuration options with the following exception: Rate Refer to the Sample Port Rate T able in this section. Diag Connection Set to NMS(CC). NetMngmtAddr ess Set to 1. 3920 Plus Use Sync Leased (Originate) default configuratio[...]

COMSPHERE 392x Plus Modems G-14 November 1996 3920-A2-GN31-30 Extended Diagnostics Figure G-7 shows a sample configuration for extended diagnostics. Figure G-7. Sample Configuration  Extended Diagnostics Configuration Options 3920 Plus A Use Sync Leased (Answer) default configuration options with the following exception: NetworkPosition Set to C[...]

Sample Configurations G-15 3920-A2-GN31-30 November 1996 3920 Plus C Use Sync Leased (Answer) default configuration options with the following exceptions: Tx Clock Sour ce Set to External. Extended Channel Set Port 1 to Enable. Upstream Port # Set to Port 1. Diag Connection Set to Modem(DC). NetworkPosition Set to Control. 3920 Plus D, F 3910 H Use[...]

COMSPHERE 392x Plus Modems G-16 November 1996 3920-A2-GN31-30 Digital Bridging Figure G-8 shows a sample for Digital Bridging. Figure G-8. Sample Configuration  Digital Bridge 3920 Plus A Use TMp Control T emplate default configuration options with the following exception: MUX Mode Set to DTE Bridge. 3920 Plus B, C Use Sync Dial template default[...]

Sample Configurations G-17 3920-A2-GN31-30 November 1996 3920 Plus E, G Use TMp Tributary template default configuration options with the following exceptions: Port2 MSD Set to Enable. R TS Action Set to Sim_Cntl_Car . Auto Dial Back Set to Enable. Auto Dial Standby Set to Adv 15min. Dial Line Rate Set to 14400(V32). 3920 Plus F Use TMp Tributary t[...]

COMSPHERE 392x Plus Modems G-18 November 1996 3920-A2-GN31-30 Point-to-Point MSD Figure G-9 shows a sample configuration for point-to-point MSD. Figure G-9. Sample Configuration — Point-to-Point MSD 3920 Plus A Use Sync Lease Answer T emplate default configuration options with the following exception: Rate Refer to the Sample Port Rate T able in [...]

Sample Configurations G-19 3920-A2-GN31-30 November 1996 Sample Port Rate T able: Point-to-Point MSD 3920Plus A Port Rate Port 1 Port 2 Port 3 Port 4 28.8K 19200 Disable Disable 9600 24.0K 14400 Disable Disable 9600 19.2K 9600 Disable Disable 9600 16.8K 4800 Disable Disable 9600 14.4K 4800 Disable Disable 9600 12.0K 2400 Disable Disable 9600 9.6K D[...]

COMSPHERE 392x Plus Modems G-20 November 1996 3920-A2-GN31-30 Multipoint MSD Figure G-10 shows a sample configuration for multipoint MSD. Figure G-10. Sample Configuration — Multipoint MSD 3920 Plus A Use TMp Control T emplate default configuration options with the following exception: NetworkPosition Set to Control. 3920 Plus B, C, D Use TMp Con[...]

Sample Configurations G-21 3920-A2-GN31-30 November 1996 Cables Cable 1 Use a standard, customer -supplied, EIA-232-D/V .24 cable with a DB-25-P (plug) connector at one end to attach to the modem. Attach this to the connector labeled DTE1 , 2 , 3 , or 4 . Cable 2 Use part number 125-0053-1431 (an 8-position, 8-wire modular cord that is supplied wit[...]

H-1 3920-A2-GN31-30 November 1996 Equipment List Equipment Feature/ Part Number Model 3920 Plus 3920-A1-XXX Model 3921 Plus 3921-B1-XXX 6-position, 4-wire modular cord, 7-foot length 125-0067-0031 8-position, 8-wire modular cord, 14-foot length 125-0053-1431 Universal Power Supply 327-0074-XXXX 3600 Hubbing Device 3600-F3-300 EIA-323-D/V .24 Crosso[...]

Glossary-1 3920-A2-GN31-30 November 1996 Glossary Active (Operating) A configuration area containing configuration options currently in use by the modem. Any time a power cycle occurs or a reset is performed or a save is issued using the DCP , this area is updated with the contents of Active (Saved). Active (Saved) A nonvolatile configuration area [...]

COMSPHERE 392x Plus Modems Glossary-2 November 1996 3920-A2-GN31-30 automatic dial standby When operating in Dial Backup mode, this function forces the modem to periodically check the quality of the leased line. If the leased line is found to be at normal operating condition, the modem disconnects from the dial network and continues normal operatio[...]

Glossary Glossary-3 3920-A2-GN31-30 November 1996 circuit pack lock A screw lock tab installed over a circuit card’ s latch release tab to prevent the unit from being removed without a tool. It is used on SDUs, modems, and filler panels. command mode One of two modem operating modes. When in Command mode, the modem accepts commands instead of tra[...]

COMSPHERE 392x Plus Modems Glossary-4 November 1996 3920-A2-GN31-30 dBm A decibel referenced to one milliwatt. This unit measures relative signal power . DCE The equipment (Data Communications Equipment or Data Circuit T erminating Equipment) that provides the functions required to establish, maintain, and end a connection. This equipment also prov[...]

Glossary Glossary-5 3920-A2-GN31-30 November 1996 EIA Electronic Industries Association. This or ganization provides standards for the data communications industry . EIA-232-D An Electronic Industries Association’ s standard defining the 25-position interface between data terminal equipment and data communications equipment. EIA RS-366-A An Elect[...]

COMSPHERE 392x Plus Modems Glossary-6 November 1996 3920-A2-GN31-30 idle A state in which the modem’ s operating parameters can be modified or commands can be issued to the modem using either A T commands or the DCP . JM8 A jack used for leased-line networks. Pins 1 and 2 are the transmit pair and Pins 7 and 8 are the receive pair . keypad A set [...]

Glossary Glossary-7 3920-A2-GN31-30 November 1996 network A communications circuit. network management address The customer -assigned diagnostic address of a modem. NIM Network Interface Module. The interface provided, up to two per carrier , for the public switched telephone network (PSTN). non-linear distortion VF line distortion which is usually[...]

COMSPHERE 392x Plus Modems Glossary-8 November 1996 3920-A2-GN31-30 register A part of the modem’ s memory that contains values that determine the modem’ s operating characteristics. Remote A branch of the T op-Level menu that permits access to the DCP of another modem. remote loopback A test that sends a signal to the remote modem to test the [...]

Glossary Glossary-9 3920-A2-GN31-30 November 1996 TDM T ime Division Multiplexer . A device that enables the simultaneous transmission of multiple independent data streams into a single high-speed data stream by simultaneously sampling the independent data streams and combining these samples to form the high-speed stream. TMp T rellis Multipoint. P[...]

COMSPHERE 392x Plus Modems Glossary-10 November 1996 3920-A2-GN31-30 VF V oice Frequency . The part of the audio frequency range used to transmit voice sound (usually 300 Hz to 3400 Hz). This band is used by the modem for its modulated signal. XOFF A character that tells the DTE or modem to stop transmitting data. XON A character that tells the DTE[...]

Index-1 3920-A2-GN31-30 November 1996 Index A Abort (test), 3-55 ac power requirements, 1-13 Active (Operating) configurations, 4-1 Active (Saved) configurations, 4-1 address, network management, 3-31, 4-29, 4-68 analog loopback test, 3-57–3-58 answer access security , 6-2–6-4 answering a call auto-answer, 3-74, 4-19, 4-46 manual answer, 3-68, [...]

COMSPHERE 392x Plus Modems Index-2 November 1996 3920-A2-GN31-30 D data access arrangement, 1-2 data compression, 4-59 data rates. See rates DA T AKIT , 4-16, 4-38, 4-41 DataStream, 3-37 default configuration options, 2-1 1–2-12, 4-2, F-2–F-7 diagnostic control panel (DCP) configurations. See configuration options description, 1-5–1-6, 3-2–[...]

Index Index-3 3920-A2-GN31-30 November 1996 Load Number (LN), 1-12 loopback local analog, 3-57–3-58 local digital, 3-60–3-61 remote digital, 3-58–3-59 M Make Busy , 3-40–3-41 manual dial. See T alk/Data menu structure, 3-10 tree, A-1–A-3 messages LCD, 3-1 1–3-16, 3-18–3-19, 3-27–3-28 result codes, 5-3–5-4 Misc configuration option[...]

COMSPHERE 392x Plus Modems Index-4 November 1996 3920-A2-GN31-30 reset control, 3-37 result codes enable/disable, 4-43, 5-7 extended, 4-43, 5-8 list, 5-3–5-4 numeric or word, 4-44, 5-7 ringer equivalence number (REN), 1-1 1 S S-Register list, 5-15–5-28 Security access messages, 3-14 branch, 3-10, 6-4–6-13 configuration options, 6-13–6-14 da[...]