Paradyne 3910 manual

COMSPHERE 3900 SERIES MODEMS MODELS 3910 AND 391 1 POINT -T O-POINT/MUL TIPOINT INST ALLA TION AND OPERA TION MANUAL Document No. 3910-A2-GN32-30 November 1996[...]

COMSPHERE 3900 Series Modems A November 1996 3910-A2-GN32-30 COMSPHERE 3900 Series Modems Models 3910 and 391 1 Point-to-Point/Multipoint Installation and Operation Manual 3910-A2-GN32-30 4th Edition (November 1996) Changes and enhancements to the product and to the information herein will be documented and issued as a new release to this manual. F[...]

Safety Instructions B 3910-A2-GN32-30 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 3900 Series Modems C November 1996 3910-A2-GN32-30 Notices      [...]

i 3910-A2-GN32-30 November 1996 T able of Contents Preface Objectives and Reader Assumptions vii . . . . . . . . . . . . . . . . . . . . . . . . . How to Use this Manual vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents viii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ordering [...]

COMSPHERE 3900 Series Modems ii November 1996 3910-A2-GN32-30 3. DCP Operation Overview 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Status Indicators 3-4 . . . . . . . . . . . . . . . . . . . . . . . . [...]

T able of Contents iii 3910-A2-GN32-30 November 1996 Appendices A. Menu T ree A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B. T roubleshooting B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C. Pin Assignments C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3900 Series Modems iv November 1996 3910-A2-GN32-30 List of Figures Figure Page 1-1 Model 3910 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Model 391 1 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2[...]

T able of Contents v 3910-A2-GN32-30 November 1996 List of T ables T able Page 1-1     . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Model 3910 and Model 391 1 DCP LEDs 3-5 . . . . . . . . . .[...]

COMSPHERE 3900 Series Modems vi November 1996 3910-A2-GN32-30 T able Page D-2 V .25bis Response Messages D-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1 ASCII Characters E-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1 Factory Default Conf[...]

vii 3910-A2-GN32-30 November 1996 Preface Objectives and Reader Assumptions This manual describes how to install and operate the COMSPHERE r 391x Series standalone and carrier -mounted modems. This manual assumes that you have a basic understanding of modems and their operation. How to Use this Manual Chapter 1 provides technical specifications, in[...]

COMSPHERE 3900 Series Modems viii November 1996 3910-A2-GN32-30 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 3910-A2-GK41 COMSPHERE 3900 Series Modems, Models 3910 and 391 1, Installation Instructions Call your sales represe[...]

1-1 3910-A2-GN32-30 November 1996 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Multipoint Applications 1-2 . . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3900 Series Modems 1-2 November 1996 3910-A2-GN32-30 • Mixed inbound rates for multipoint applications. • Convenient migration to new or optional features through software downloading. • Extended data circuits with diagnostics. • Network management system (NMS) support through the COMSPHERE 6800 or 6700 Series NMS using Advanced D[...]

Introduction 1-3 3910-A2-GN32-30 November 1996 Standalone Model 3910 4-Wire/2-Wire Modem The standalone Model 3910 modem (Figure 1-1) is capable of either 4-wire/2-wire leased-line or dial operation. The modem is controlled using either A T commands or the diagnostic control panel (DCP). The DCP consists of a liquid crystal display (LCD), three fun[...]

COMSPHERE 3900 Series Modems 1-4 November 1996 3910-A2-GN32-30 Model 391 1’ s faceplate has 16 LED status indicators for displaying modem activity and an audio speaker jack for the carrier’ s optional speaker . The Model 391 1 modem’ s rear has two edge card connectors that mount into a connector plate located on the rear of the carrier . Thi[...]

Introduction 1-5 3910-A2-GN32-30 November 1996 manner similar to the DCP on the Model 3910. For a better understanding of DCP operation, refer to Chapter 3, DCP Operation . The COMSPHERE 3000 Series Carrier has a total of 17 slots. The first slot, Slot 0, is reserved for the shared diagnostic unit (SDU) while the remaining 16 slots can house up to [...]

COMSPHERE 3900 Series Modems 1-6 November 1996 3910-A2-GN32-30 7. 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 o[...]

Introduction 1-7 3910-A2-GN32-30 November 1996 Canada NOTICE T O THE USERS OF THE CANADIAN PUBLIC SWITCHED TELEPHONE NETWORK The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The Departm[...]

COMSPHERE 3900 Series Modems 1-8 November 1996 3910-A2-GN32-30 T echnical Specifications T able 1-1 shows the technical specifications for the 391x Series modems. T able 1-1 (1 of 3) T echnical Specifications for 391x Series Modems Specifications Description APPROV ALS FCC Part 15 Class A FCC Part 68 Registration Number: (See label on modem) UL Mod[...]

Introduction 1-9 3910-A2-GN32-30 November 1996 T able 1-1 (2 of 3) T echnical Specifications for 391x Series Modems Specifications Description ENVIRONMENT Operating T emperature 32 ° F (0 ° C) to 122 ° F (50 ° C) Relative Humidity 5% to 90% (noncondensing) Shock and V ibration Withstands normal shipping Storage T emperature –4 ° F (–20 ° [...]

COMSPHERE 3900 Series Modems 1-10 November 1996 3910-A2-GN32-30 T able 1-1 (3 of 3) T echnical Specifications for 391x Series Modems Specifications Description DA T A RA TES Leased Line 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400 1200 bps Dial Line 19200, 16800, 14400, 12000, 9600, 7200, 4800, 2400, 1200, 600, 300 bps ERROR CONTROL CCITT V .[...]

2-1 3910-A2-GN32-30 November 1996 Modem Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391x Series Modem Package 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer-Supplied Equipment 2-2 . . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 3900 Series Modems 2-2 November 1996 3910-A2-GN32-30 For the carrier-mounted model • Installation instructions • Model 391 1 modem • Rear connector plate with two DB-25-S edge card connectors If any hardware components are damaged, notify your service representative. Return equipment using the procedures described in the Government [...]

Modem Installation 2-3 3910-A2-GN32-30 November 1996 The rear panel of the Model 3910 modem (Figure 2-1) has the following switches and connectors: • An ON/OFF power switch. • An 8-pin DIN type power receptacle (PWR) for the dc power supply . • An 8-pin modular keyed jack (LEASED) for 4-wire/2-wire leased lines. • An 8-pin modular keyed jac[...]

COMSPHERE 3900 Series Modems 2-4 November 1996 3910-A2-GN32-30 DTE Connection Use the following procedures to connect the EIA-232-D cable from the modem to the DTE: 1. Make sure the modem’ s rear panel power switch is OFF . 2. Connect the DB-25-P (plug) connector on the cable to the DB-25-S (socket) connector labeled DTE (Figure 2-1) on the modem[...]

Modem Installation 2-5 3910-A2-GN32-30 November 1996 Network Management System Connection For the Model 3910, use the following procedures to connect the modem to the network management system 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 [...]

COMSPHERE 3900 Series Modems 2-6 November 1996 3910-A2-GN32-30 Selecting Factory Configuration Options After the modem passes the power -up self-test, configure it for operation using one of the six factory preset configurations. The 391x Series modems have six factory preset templates that contain the most commonly used configuration options (stra[...]

Modem Installation 2-7 3910-A2-GN32-30 November 1996 6. Press the key until the appropriate configuration area appears on the LCD, then press the corresponding function key to select your choice. (Saving configuration options to the Active (Saved) configuration area automatically saves them to the Active (Operating) configuration area.) The LCD dis[...]

COMSPHERE 3900 Series Modems 2-8 November 1996 3910-A2-GN32-30 T o change a factory template using A T commands, perform the following steps. For more information on changing factory templates using A T commands, refer to Chapter 5, A T Command Set and S-Registers . 1. Use the A T&F&W command to load the appropriate factory configuration to[...]

Modem Installation 2-9 3910-A2-GN32-30 November 1996 Removing and Replacing Model 3910 Modems T o remove and replace a Model 3910 modem, perform the following steps: 1. Make sure the modem is of fline, and press the modem’ s rear panel power switch to the OFF position. 2. Disconnect the power cord from the ac power outlet, and then disconnect the[...]

COMSPHERE 3900 Series Modems 2-10 November 1996 3910-A2-GN32-30 Figure 2-2. Installing a Model 391 1 Modem 2. At the front of the carrier , hold the modem vertically , with the latch on its faceplate in the open position, and insert it into the top and bottom card guides of one of the slots numbered 1–16 (Figure 2-2). Slide the modem into the slo[...]

Modem Installation 2-1 1 3910-A2-GN32-30 November 1996 5. Press the Select key to place the SDCP in direct communication with the selected modem. The LCD displays the T op-Level menu for the selected modem. In addition, the Front Panel LED on the modem’ s faceplate and the OK LED on the SDCP light. 6. Once you have determined that the modem is in[...]

COMSPHERE 3900 Series Modems 2-12 November 1996 3910-A2-GN32-30 Removing and Replacing Model 391 1 Modems CAUTION If the Model 391 1 is removed from the carrier , always use a ground strap when handling the modem. Always store the Model 391 1 in an antistatic bag when it is removed from the carrier . It is not necessary to power down the carrier to[...]

3-1 3910-A2-GN32-30 November 1996 DCP Operation Overview 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic Control Panels 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3910 Diagnostic Control Panel 3-3 . . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3900 Series Modems 3-2 November 1996 3910-A2-GN32-30 Call Setup Branch 3-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dial 3-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disconnect 3-56 . . . . . . . . . . . . . . . . . . . [...]

DCP Operation 3-3 3910-A2-GN32-30 November 1996 Model 3910 Diagnostic Control Panel The diagnostic control panel (DCP) of the Model 3910 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 3910 496-14174-0 1 F1 F2 F3 SQ RTS DTR 104 DIAG[...]

COMSPHERE 3900 Series Modems 3-4 November 1996 3910-A2-GN32-30 Status Indicators The 391x Series modems’ status indicators continuously provide information on the modem’ s operating condition. All of the status indicators on the Model 3910 appear on the DCP (Figure 3-1), whereas the status indicators for the carrier -mounted Model 391 1 are loc[...]

DCP Operation 3-5 3910-A2-GN32-30 November 1996 The standalone Model 3910 modem’ s DCP has 13 light-emitting diodes (LEDs), and the carrier-mounted Model 391 1 has 16 LEDs. These LEDs are listed and described in T able 3-1. LEDs specific to one model type have the appropriate model number shown in the table. T able 3-1 Model 3910 and Model 391 1 [...]

COMSPHERE 3900 Series Modems 3-6 November 1996 3910-A2-GN32-30 The SDCP LEDs are listed and described in T able 3-2. T able 3-2 SDCP LEDs Label Color Indicates OK green Power is ON and the modem is capable of operating. Alarm red The modem has detected a problem with its operation. For example, the modem failed a self-test. BckUp yellow The modem, [...]

DCP Operation 3-7 3910-A2-GN32-30 November 1996 Hidden Choice Indicators The hidden choice indicators serve as an alert that other choices are available besides what is currently displaying on the LCD. These indicators appear as one of the following symbols: Right Scroll Indicator > The right scroll indicator appears when more choices are availa[...]

COMSPHERE 3900 Series Modems 3-8 November 1996 3910-A2-GN32-30 These keys also allow you to move the cursor one character to the left or right on data entry displays; for example, to allow entry of one digit at a time. F1 F2 F3 Keys Function keys select the LCD choice that appears above the function key; they are labeled F1, F2, and F3. If a select[...]

DCP Operation 3-9 3910-A2-GN32-30 November 1996 All menu tree branches are discussed later in Chapter 3 except for Configure, which is discussed in Chapter 4, and Security , which is discussed in Chapter 6. Functions that appear on the LCD vary depending upon the type of model installed, its operating mode, and software configuration. T op-Level Me[...]

COMSPHERE 3900 Series Modems 3-10 November 1996 3910-A2-GN32-30 T able 3-3 (2 of 4) T op-Level Menu Status Status Indicates Message Dial Backup or Ld B k Standby: MR* The modem is operating in Dial Standby mode. p Leased Backup DialBckUp: MR* The modem is operating in Dial Backup mode at the displayed data rate and is configured for Direct mode. Ba[...]

DCP Operation 3-1 1 3910-A2-GN32-30 November 1996 T able 3-3 (3 of 4) T op-Level Menu Status Status Indicates Message Call Failure Cont. No Dial–DTR The modem cannot dial because DTR is OFF . No Dial–T est The modem cannot dial because it is running a T est. No Dial T one The modem has aborted the call because it cannot detect a dial tone. No Q[...]

COMSPHERE 3900 Series Modems 3-12 November 1996 3910-A2-GN32-30 T able 3-3 (4 of 4) T op-Level Menu Status Status Indicates Message Firmware Download Result Cont. Remote Clone OK A remote cloning of firmware was successful. This message appears on the local modem’s LCD. Bcast Clone Done A broadcast cloning of firmware has completed. Y ou must loo[...]

DCP Operation 3-13 3910-A2-GN32-30 November 1996 Messages listed in T able 3-5 are dial access security messages. T able 3-5 Dial Access Security Messages Dial Access Security Message Indicates Get VF PsWd The answering modem is waiting for the originating caller to transmit a VF password. Get DTE PsWd The answering modem is waiting to receive a va[...]

COMSPHERE 3900 Series Modems 3-14 November 1996 3910-A2-GN32-30 Quick Configuration Display The Quick Configuration display indicates the basic operational characteristics of the modem. F1 Leased:19.2 Status Configure F2 F3 T o access the Quick Configuration display from the T op-Level display , press the key . F1 Leased:19.2 abbb cdd ee ff ff F2 F[...]

DCP Operation 3-15 3910-A2-GN32-30 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 3900 Series Modems 3-16 November 1996 3910-A2-GN32-30 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 3-17 3910-A2-GN32-30 November 1996 T able 3-6 (1 of 2) Health and Status Messages T ype Message Indicates Major Device Failure A device/self test has failed. The probable cause is a modem hardware problem or diagnostic memory failure. Facility Fault A severe data transport problem is occurring due to poor line conditions. No signal or[...]

COMSPHERE 3900 Series Modems 3-18 November 1996 3910-A2-GN32-30 T able 3-6 (2 of 2) Health and Status Messages T ype Indicates Message Dial Make Busy Mode The modem is in a Make Busy condition. Service Line (Model 391 1 only) The modem installed in a COMSPHERE 3000 Series Carrier has been switched to a service line. Short Hold T ime The modem’s d[...]

DCP Operation 3-19 3910-A2-GN32-30 November 1996 VF VF displays the condition of the leased or dial connection. T o access VF from the Status branch, make the following selection: F1 Status: > DeviceHS VF F2 F3 Select VF . F1 Status:VF > SigQual=Excelent F2 F3 If the modem is receiving a signal, the signal quality appears on the LCD’ s bott[...]

COMSPHERE 3900 Series Modems 3-20 November 1996 3910-A2-GN32-30 NonLnearDist Non-Linear Distortion displays distortion which is usually associated with pulse-code modulation (PCM) compandor noise on the phone line. This value appears for T rellis Multipoint modulation. Retrains Retrains displays the number of retrains over the last 15 minutes of op[...]

DCP Operation 3-21 3910-A2-GN32-30 November 1996 DTE DTE displays the state and/or activity of the following interface leads: LSD, DTR, DSR, T st, 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 key until DTE[...]

COMSPHERE 3900 Series Modems 3-22 November 1996 3910-A2-GN32-30 To access Backup from the Status branch, make the following selection: Press the key until Backup appears. F1 Status: DTE Backup F2 F3 Select Backup. F1 Status:Backup > Line=Pri 4w APL F2 F3 The configuration of the current operating line facility (either APL primary or backup) appe[...]

DCP Operation 3-23 3910-A2-GN32-30 November 1996 T able 3-7 Backup Status Screens Active Line 1st Screen Display Inactive Line 2nd Screen Display Possible Inactive/Backup Line Condition Line=Pri 4w APL or Line=Pri 2w APL Bckup:2wAPL=XXXX or Bckup : Dial =(blank) Good indicates that line continuity is detected. Bad indicates that line continuity is [...]

COMSPHERE 3900 Series Modems 3-24 November 1996 3910-A2-GN32-30 F1 Options:Status > V .29 V .33 F2 F3 If optional features are installed in the modem, they appear on the LCD’ s bottom line. If other features are installed, press the key to scroll other features into view . T o exit this function and remain in the Status branch, press the key .[...]

DCP Operation 3-25 3910-A2-GN32-30 November 1996 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 remaining fields. The message Modem O.K. appears if no sequence faults have occurred. T o remove sequence fault records from [...]

COMSPHERE 3900 Series Modems 3-26 November 1996 3910-A2-GN32-30 T o access PList from the T op-Level menu, make the following selections: F1 Leased:19.2 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 managem[...]

DCP Operation 3-27 3910-A2-GN32-30 November 1996 If there are modems in the poll list when you select Display , xxx Displays the network management address of the modem in the poll list. yyyyyy Displays either Active or Skip to indicate the poll list in which the network management address is included. Select Nxt to scroll through the entries in th[...]

COMSPHERE 3900 Series Modems 3-28 November 1996 3910-A2-GN32-30 F1 Poll List:Chang > Active Delete F2 F3 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 you sel[...]

DCP Operation 3-29 3910-A2-GN32-30 November 1996 F1 Poll List:Add Command Complete F2 F3 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 [...]

COMSPHERE 3900 Series Modems 3-30 November 1996 3910-A2-GN32-30 The number field (yyy) indicates the total number of devices that responded to the modem’ s polls. These devices have been acquired for the poll list. Select Abort or allow the function to complete. F1 Poll List:Acquir Num Acquired yyy F2 F3 The number field (yyy) indicates the total[...]

DCP Operation 3-31 3910-A2-GN32-30 November 1996 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 the following s[...]

COMSPHERE 3900 Series Modems 3-32 November 1996 3910-A2-GN32-30 T o access Reset from the Control branch, make the following selection: F1 Control: > Speaker Reset F2 F3 Select Reset. The message Reset appears momentarily before the modem performs the power -up diagnostic test sequence. Data Stream The Data Stream function is not available in As[...]

DCP Operation 3-33 3910-A2-GN32-30 November 1996 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 Use the EIA LEDs function to change the port that controls the front panel LEDs. This function allows the front panel EIA LEDs to display the activity of a sel[...]

COMSPHERE 3900 Series Modems 3-34 November 1996 3910-A2-GN32-30 Make Busy/Remove Make Busy The Make Busy function forces the modem of f-hook so it cannot answer a call. This is often used with PBX systems to permit the busy out of a PBX port for rotary or hunt groups. W ARNING T o prevent violations of FCC and DOC regulations, this function must on[...]

DCP Operation 3-35 3910-A2-GN32-30 November 1996 Service Line/Disconnect Service Line The Service Line function allows you to switch a specific Model 391 1 installed in a COMSPHERE 3000 Series Carrier from normal leased or dial operation to service-line operation. This switch only places the modem on the service line. For a connection to be establi[...]

COMSPHERE 3900 Series Modems 3-36 November 1996 3910-A2-GN32-30 Selecting Clone Remote NOTE Clone Remote operations are not supported unless both local and remote modems are 391x Series modems. (The 3800 or 392x Series modems cannot be used in cloning operations with 391x Series modems.) T o access DwnLoadSoftware from the Control branch, make the [...]

DCP Operation 3-37 3910-A2-GN32-30 November 1996 Clone Remote in Broadcast Configurations A tributary modem configured for extended diagnostics (Diagnostic Connection configuration option set to Modem(DC)) can perform two types of Remote Clone operations. It can clone the upstream, VF connected, control modem (SC_Clone) or it can clone all the 391x[...]

COMSPHERE 3900 Series Modems 3-38 November 1996 3910-A2-GN32-30 Viewing DC Broadcast Clone Results F1 Choose DLL T ype > DC_CloneResults F2 F3 From the Choose DLL T ype screen, press the key until DC_CloneResults appears to view the results of the last DC_Broadcast clone operation. If the message T rib List Empty appears, this indicates that a m[...]

DCP Operation 3-39 3910-A2-GN32-30 November 1996 • For Multiple download configurations, ensure that the control modem’ s active poll list contains all the network management addresses for the remote tributary modems that will receive the download (refer to the Poll List section in this chapter), and ensure that the tributaries are responding p[...]

COMSPHERE 3900 Series Modems 3-40 November 1996 3910-A2-GN32-30 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, Implementing a Clone Remote Operation . Viewing Multiple TMp Clone Results F1 Choose DLL T ype > [...]

DCP Operation 3-41 3910-A2-GN32-30 November 1996 F1 W arning:Download Abort_Download F2 F3 At this point, if you do not want to continue this process, abort the transfer by selecting any function key . This returns the modem to the DwnLoadSoftware menu. However , to continue with the transfer , press the key to display the Reprogram_Remote selectio[...]

COMSPHERE 3900 Series Modems 3-42 November 1996 3910-A2-GN32-30 F1 RemClone Status Bank1:xxxx/yyyy F2 F3 As data banks are transferred, the local and remote LCD’ s bottom line displays the status of the download process, and the number of records sent versus the total number of records for that bank. For Single download applications, if the downl[...]

DCP Operation 3-43 3910-A2-GN32-30 November 1996 F1 RSL High (- dBm) N x t  0 9 F2 F3 In the example shown above, 09 is the upper (High) RSL threshold (in - dBm). T o change the 09 to 10, make the following selections: F1 RSL High (- dBm) N x t  1 9 F2 F3 r Select the F2 (  ) key to increment the number above the cursor ( 0 ) to 1[...]

COMSPHERE 3900 Series Modems 3-44 November 1996 3910-A2-GN32-30 To save the edited threshold(s): F1 RSL High (- dBm) N x t  10 F2 F3 Press the key to scroll up to the Edit/Save screen. F1 VF Thresholds Edit Save Reset F2 F3 Select Save. If the edited VF thresholds are valid, the Save command stores them into nonvolatile memory . When the Save[...]

DCP Operation 3-45 3910-A2-GN32-30 November 1996 T able 3-8 V alid Ranges for VF Thresholds VF Thresholds V alid Ranges Default V alues Receive Signal Level High 0 dBm to –15 dBm Above –9 dBm Receive Signal Level Low –16 dBm to –50 dBm Below –23 dBm Signal to Noise Ratio 5 dB to 40 dB Below 23 dB Non-Linear Distortion 15 dB to 50 dB Below[...]

COMSPHERE 3900 Series Modems 3-46 November 1996 3910-A2-GN32-30 T est Branch The T est branch of the T op-Level menu allows you to initiate various modem tests. Use these tests if you are having data communication problems, such as periodic character loss, random errors, or constant format errors. By the process of elimination, you can usually isol[...]

DCP Operation 3-47 3910-A2-GN32-30 November 1996 T o access Abort from the T est branch, make the following selection: F1 T est: > Abort Self F2 F3 Select Abort. F1 T est:Abort Command Complete F2 F3 The modem stops all tests currently in progress and displays the Command Complete status message on the LCD. T o exit this function and remain in t[...]

COMSPHERE 3900 Series Modems 3-48 November 1996 3910-A2-GN32-30 NOTE For tributary modems only , the test is delayed 30 seconds to allow any outstanding network management messages to propagate upstream before the VF channel is interrupted by the test. If the modem passes the self-test, Pass appears on the LCD. If it fails, Failed appears. If the m[...]

DCP Operation 3-49 3910-A2-GN32-30 November 1996 F1 T est:Local Loop Started F2 F3 NOTE For tributary modems only , the test is delayed 30 seconds to allow any outstanding network management messages to propagate upstream before the VF channel is interrupted by the test. The message Started appears on the LCD, and the T est LED lights for the durat[...]

COMSPHERE 3900 Series Modems 3-50 November 1996 3910-A2-GN32-30 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 T est:Remote Loop Started F2 F3 The message Started appears on the LCD, and the[...]

DCP Operation 3-51 3910-A2-GN32-30 November 1996 T o access Loc Digital Loop from the T est branch, make the following selections: F1 T est: Loc_Digital_Loop F2 F3 Press the key until Loc_Digital_Loop appears. Press any function key to start this test. F1 T est:Digitl Loop Started F2 F3 The message Started appears on the LCD and the T est LED light[...]

COMSPHERE 3900 Series Modems 3-52 November 1996 3910-A2-GN32-30 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. F1 T est:Pattern > [...]

DCP Operation 3-53 3910-A2-GN32-30 November 1996 BlksErrd=xxxxxxx displays the number of blocks of data found in error (block size is 1000 bits per block). BlksRcvd=xxxxxxx displays the total number of blocks of data received. The message NoSync appears as a value for BlksErrd while the modem’ s receiver is synchronizing. The message OvrFlw appea[...]

COMSPHERE 3900 Series Modems 3-54 November 1996 3910-A2-GN32-30 F1 Sub-network HS Nxt xxx yyyyyy F2 F3 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 , a [...]

DCP Operation 3-55 3910-A2-GN32-30 November 1996 Call_Setup “Status” Status Configure PList Control T est SubHS Tlk/Data Security Remote Dial Disconnect Answer Dial_Standby or Return_to_Dial Change_Directory (Dial B ackup o nly) Director y L ocation s 1 - 2 4 Directory_Status (Does not appear in North America) T o access the Call Setup branch f[...]

COMSPHERE 3900 Series Modems 3-56 November 1996 3910-A2-GN32-30 F1 DialDirectory: Nxt 01:5551234 F2 F3 T o view other directory locations, select Nxt. F1 DialDirectory: Nxt 02:5461879 F2 F3 Once the directory location you want appears on the LCD, press the F2 or F3 key to dial the number . F1 DialDirectory:01 Off Hook F2 F3 The Call Setup status Of[...]

DCP Operation 3-57 3910-A2-GN32-30 November 1996 For dial backup applications, the modem goes on-hook (hangs up) and the call is disconnected. The Command Complete status message appears. T o exit this function and remain in the Call Setup branch, press the key . T o exit and return to the T op-Level menu, press the key . Answer For dial backup app[...]

COMSPHERE 3900 Series Modems 3-58 November 1996 3910-A2-GN32-30 496-13081-01 MODEM MODEM LEASED-LINE F AILURE XX DIAL BACKUP LINE DIAL ST ANDBY RETURN TO DIAL Figure 3-10. Dial Backup 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 Stand[...]

DCP Operation 3-59 3910-A2-GN32-30 November 1996 F1 Dial Standby Command Complete F2 F3 If the modem is operating in a Dial Backup mode, the Dial Standby function forces the modem to primary leased lines and the LCD displays the status message Command Complete . Once the modem is in Dial Standby mode, Return_to_Dial appears on the LCD. Selecting th[...]

COMSPHERE 3900 Series Modems 3-60 November 1996 3910-A2-GN32-30 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 sa[...]

DCP Operation 3-61 3910-A2-GN32-30 November 1996 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 391x Series modems recognize: T — T one (DTMF) dial. Any digit 0–9, *, or # can be dialed [...]

COMSPHERE 3900 Series Modems 3-62 November 1996 3910-A2-GN32-30 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 l[...]

DCP Operation 3-63 3910-A2-GN32-30 November 1996 The following sections describe three 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 configurati[...]

COMSPHERE 3900 Series Modems 3-64 November 1996 3910-A2-GN32-30 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 . This configuration option does not appear on Models 3910-A1-401 and 391 1-[...]

DCP Operation 3-65 3910-A2-GN32-30 November 1996 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 using the Remo[...]

COMSPHERE 3900 Series Modems 3-66 November 1996 3910-A2-GN32-30 NOTE When initiating a Remote function from a TMp tributary modem, primary channel operation is not available. Also, if the tributary modem is not on the control modem’ s poll list, the error message No T rib Session appears when the function is executed. To access the Remote branch,[...]

DCP Operation 3-67 3910-A2-GN32-30 November 1996 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 field (yyyyyyy[...]

COMSPHERE 3900 Series Modems 3-68 November 1996 3910-A2-GN32-30 Status “Status” Configure PList Control T est SubHS Call_Setup ExitRem The T op-Level menu of the remote 391x Series modem is similar to the local 391x Series modem with the following exceptions: • The T alk/Data and Security branches do not appear . • Change Directory is the o[...]

DCP Operation 3-69 3910-A2-GN32-30 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 391x Series modem and prevent unwanted user access. T wo options ar[...]

4-1 3910-A2-GN32-30 November 1996 DCP Configuration Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configure Branch 4-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Editing and Saving a Configuration Option 4-5 . . . . . . . . . . . [...]

COMSPHERE 3900 Series Modems 4-2 November 1996 3910-A2-GN32-30 NOTE If you are using A T commands, a period of time can exist in which the contents of Active (Operating) and Active (Saved) dif fer . Once you issue an A T&W0 (write) command, however , the two storage areas are identical. Figures 4-1 and 4-2 graphically display the interaction be[...]

DCP Configuration 4-3 3910-A2-GN32-30 November 1996 Active ( Saved) (A TZ0, A TZ3) Customer1 (A TZ1) Customer2 (A TZ2) Factory US E AT & W COMMAND TO SA VE CHANGE S T O Activ e ( Saved), Customer1 , OR Customer2 LOAD Activ e ( Operating) USING AT Z OR AT & F COMMAND S Sync Leased Answer (A T&F2) S Async Leased Answer (A T&F5) S TMp [...]

COMSPHERE 3900 Series Modems 4-4 November 1996 3910-A2-GN32-30 Configure Branch The Configure branch of the T op-Level menu contains all of the modem’ s configuration options (straps) which determine how the modem operates. These configuration options are accessed by scrolling down and across various levels of the Configure branch. “Status” S[...]

DCP Configuration 4-5 3910-A2-GN32-30 November 1996 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 options or [...]

COMSPHERE 3900 Series Modems 4-6 November 1996 3910-A2-GN32-30 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 Mis[...]

DCP Configuration 4-7 3910-A2-GN32-30 November 1996 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 the key to[...]

COMSPHERE 3900 Series Modems 4-8 November 1996 3910-A2-GN32-30 T o 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 (Act[...]

DCP Configuration 4-9 3910-A2-GN32-30 November 1996 Configuration T ables The modem’ s configuration options are arranged into nine groups based on functionality: DTE Interface (T able 4-1), DTE Dialer (T able 4-2), Line Dialer (T able 4-3), Dial Line (T able 4-4), Leased Line (T able 4-5), V .42/MNP/Buffer (T able 4-6), T est (T able 4-7), Misc [...]

COMSPHERE 3900 Series Modems 4-10 November 1996 3910-A2-GN32-30 T able 4-1 (1 of 10) DTE Interface Configuration Options Async/Sync Mode: Sync Nxt Sync Async Asynchronous/Synchronous Mode. Determines whether the modem operates in Asynchronous mode or Synchronous mode. If the A T command set is enabled and this configuration option is set to Sync, t[...]

DCP Configuration 4-1 1 3910-A2-GN32-30 November 1996 T able 4-1 (2 of 10) DTE Interface Configuration Options Asyn Parity Bit: None Nxt None Even Odd Mark Space This configuration option only appears if Async/Sync Mode is configured for Async. Asynchronous Parity Bit. Determines the type of asynchronous parity bit. The parity of the DTE must match[...]

COMSPHERE 3900 Series Modems 4-12 November 1996 3910-A2-GN32-30 T able 4-1 (3 of 10) DTE Interface Configuration Options 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. H Ignore Modem assumes DTR [...]

DCP Configuration 4-13 3910-A2-GN32-30 November 1996 T able 4-1 (4 of 10) DTE Interface Configuration Options DSR Control: Stndrd_RS232 Nxt Stndrd_RS232 Forced_On WinkWhenDisc Follows_DTR On_Early Delay_T oData Data Set Ready Control. DSR is a signal from the modem to the DTE indicating the modem is connected and ready for operation. H Standard RS2[...]

COMSPHERE 3900 Series Modems 4-14 November 1996 3910-A2-GN32-30 T able 4-1 (5 of 10) DTE Interface Configuration Options RTS Action: Stndrd_RS232 Nxt Stndrd_RS232 Ignore Sim_Cntl_Car Cntl_Car Request-to-Send Action. R TS is a signal from the DTE indicating the DTE has data to send. H Standard RS232 Allows the DTE to control R TS to the modem in nor[...]

DCP Configuration 4-15 3910-A2-GN32-30 November 1996 T able 4-1 (6 of 10) DTE Interface Configuration Options CTS Control: Stndrd_RS232 Nxt Stndrd_RS232 Forced_On WinkWhenDisc Follows_DTR Follows_R TS40 Clear-to-Send Control. CTS is a signal from the modem to the DTE indicating that it can accept data from the DTE. H Standard RS232 In Synchronous m[...]

COMSPHERE 3900 Series Modems 4-16 November 1996 3910-A2-GN32-30 T able 4-1 (7 of 10) DTE Interface Configuration Options 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 remote modem. It is[...]

DCP Configuration 4-17 3910-A2-GN32-30 November 1996 T able 4-1 (8 of 10) DTE Interface Configuration Options TX Clock Source: Internal Nxt Internal External RXC_Loop This configuration option only appears if Async/Sync Mode is configured for Sync. T ransmit Clock Source. Determines the source of timing for synchronous data transmitted from the mod[...]

COMSPHERE 3900 Series Modems 4-18 November 1996 3910-A2-GN32-30 T able 4-1 (9 of 10) DTE Interface Configuration Options CT1 1 1_Rate Cntl: Disable Nxt Disable Fallback1 Fallback2 CT1 1 1 Rate Control. Allows the DTE to control modem rate via Pin 23 of the EIA-232-D interface. This configuration option determines the ef fect of the DTE Rate control[...]

DCP Configuration 4-19 3910-A2-GN32-30 November 1996 T able 4-1 (10 of 10) DTE Interface Configuration Options 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) channel connectivity between th[...]

COMSPHERE 3900 Series Modems 4-20 November 1996 3910-A2-GN32-30 T able 4-2 (1 of 5) DTE Dialer Configuration Options DTE Dialer T ype: Disable Nxt Disable A T V25bis_Async V25bis_Bsync V25bis_HDLC DTR=Direct1 A T&T_Exclusv Data T erminal Equipment Dialer T ype. Identifies to the modem the type of dialing method and protocol used by the DTE. H D[...]

DCP Configuration 4-21 3910-A2-GN32-30 November 1996 T able 4-2 (2 of 5) DTE Dialer Configuration Options A T Escape Char: 043 ASCI Nxt  043 ASCI This configuration option only appears if DTE Dialer T ype is configured for A T . A T Escape Character . The escape sequence (+++) allows you to move from Data mode to Command mode. Use the A T Origin[...]

COMSPHERE 3900 Series Modems 4-22 November 1996 3910-A2-GN32-30 T able 4-2 (3 of 5) DTE Dialer Configuration Options CarriageRtn Char: 013 ASCI Nxt  013 ASCI This configuration option only appears if DTE Dialer T ype is configured for A T . Carriage Return Character . Allows you to change the ASCII character used to terminate an A T command to a[...]

DCP Configuration 4-23 3910-A2-GN32-30 November 1996 T able 4-2 (4 of 5) DTE Dialer Configuration Options ExtendResltCode: Enable Nxt Enable Disable Add/EC Add/V42,MNP Use_DTE_Rate This configuration option only appears if DTE Dialer T ype is configured for A T . Extended Result Codes. Informational messages such as VF data rate and Error Control a[...]

COMSPHERE 3900 Series Modems 4-24 November 1996 3910-A2-GN32-30 T able 4-2 (5 of 5) DTE Dialer Configuration Options A T Cmnd Mode: Normal Nxt Normal No_ERROR NoStrapOrERR This configuration option only appears if DTE Dialer T ype is configured for A T . A T Command Mode. Determines how the modem responds to valid and invalid A T commands. H Normal[...]

DCP Configuration 4-25 3910-A2-GN32-30 November 1996 Line Dialer The Line Dialer configuration options establish parameters used by the modem to answer or originate calls. T able 4-3 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 is just being instal[...]

COMSPHERE 3900 Series Modems 4-26 November 1996 3910-A2-GN32-30 T able 4-3 (2 of 5) Line Dialer Configuration Options Blind Dial Pause: 2sec Nxt 2sec 4sec 6sec 8sec 10sec 20sec This configuration option only appears when Dial T one Detect is configured for Disable. Blind Dial Pause. Determines how long the modem waits before dialing a telephone num[...]

DCP Configuration 4-27 3910-A2-GN32-30 November 1996 T able 4-3 (3 of 5) Line Dialer Configuration Options Fast Disconnect: Disable Nxt Disable Enable Fast Disconnect. Allows the modem to disconnect immediately after receiving a disconnect command from a local DTE or its own diagnostic control panel. H Disable The modem follows its normal disconnec[...]

COMSPHERE 3900 Series Modems 4-28 November 1996 3910-A2-GN32-30 T able 4-3 (4 of 5) Line Dialer Configuration Options 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 is OFF befo[...]

DCP Configuration 4-29 3910-A2-GN32-30 November 1996 T able 4-3 (5 of 5) Line Dialer Configuration Options MakeBusyV ia DTR: Disable End Disable Enable Make Busy V ia DTR. Determines if the modem goes of f-hook when DTR is OFF . Enable this setting if the DTE normally keeps DTR ON and turns DTR OFF when the DTE cannot accept a call. NOTE: This conf[...]

COMSPHERE 3900 Series Modems 4-30 November 1996 3910-A2-GN32-30 Dial Line The Dial Line configuration options are used to configure the modem for operation over dial lines. T able 4-4 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 just being install[...]

DCP Configuration 4-31 3910-A2-GN32-30 November 1996 T able 4-4 (2 of 3) Dial Line Configuration Options V32bis Automode: Enable Nxt Enable Disable System 85 This configuration option only appears when Dial Line Rate is configured for V .32 terbo, V .32bis, or V .32 data rate. V .32bis Automode. The modem automatically adapts to the modulation sche[...]

COMSPHERE 3900 Series Modems 4-32 November 1996 3910-A2-GN32-30 T able 4-4 (3 of 3) Dial Line Configuration Options 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 V .32bis Automode is configured for Enable. V .22bis Guard T one. Det[...]

DCP Configuration 4-33 3910-A2-GN32-30 November 1996 Leased Line 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 4-5 shows each Leased Line configuration option as it appears on the LCD, with the Sync Leased facto[...]

COMSPHERE 3900 Series Modems 4-34 November 1996 3910-A2-GN32-30 T able 4-5 (2 of 6) Leased Line Configuration Options LeasedLine Rate: 19200(V32t) Nxt 19200(V32t) 16800(V32t) 14400(V32b) 12000(V32b) 9600(V32b) 7200(V32b) 4800(V32b) 19200(TMp) 14400(TMp) 9600(TMp) 7200(TMp) 4800(TMp) 2400(TMp) 2400(V22bis) 14400(V33) 12000(V33) 9600(V29) 7200(V29) 4[...]

DCP Configuration 4-35 3910-A2-GN32-30 November 1996 T able 4-5 (3 of 6) Leased Line Configuration Options V32bis Autorate: Enable Nxt Enable Disable This configuration option only appears when Leased Line Rate is configured for V .32 terbo or V .32bis data rate. V .32bis Autorate. Once connected, the modem automatically lowers the line rate if lin[...]

COMSPHERE 3900 Series Modems 4-36 November 1996 3910-A2-GN32-30 T able 4-5 (4 of 6) Leased Line Configuration Options AutoDialStandby: Disable Nxt Disable 15min 1hr 4hr T est(2min) Adv 15min Adv 30min Adv 1 hr T estAdv2min This configuration option is not available if the LeaseLine Rate is configured for TMp and the NetworkPosition is configured fo[...]

DCP Configuration 4-37 3910-A2-GN32-30 November 1996 T able 4-5 (5 of 6) Leased Line Configuration Options V .27bis T rain. Controls the train time for V .27bis operation. The A T command is S-Register S70= n , where n is 0 for Short and 1 for Long. V29 T rainOnData: Disable Nxt Disable Enable This configuration option is only available if Leased-L[...]

COMSPHERE 3900 Series Modems 4-38 November 1996 3910-A2-GN32-30 T able 4-5 (6 of 6) Leased Line Configuration Options Dual_Leased_Ln: Disable Nxt Disable Enable This configuration option is only available when the Dual Leased Line device option is installed. Dual Leased Line. Allows the 2-wire backup facility to function as a 2-wire leased-line fac[...]

DCP Configuration 4-39 3910-A2-GN32-30 November 1996 T able 4-6 (1 of 8) V .42/MNP/Buffer Configuration Options Err Contrl Mode: V42/MNPorBfr Nxt V42/MNPorBfr V42/MNPorDsc MNP_or_Buf fr MNP_or_Disc Buf ferMode DirectMode LAPM_or_Disc LAPM_or_Bufr This configuration option is only available if Async/Sync Mode is configured for Async. Error Control M[...]

COMSPHERE 3900 Series Modems 4-40 November 1996 3910-A2-GN32-30 T able 4-6 (2 of 8) V .42/MNP/Buffer Configuration Options Err Contrl Mode (Continued) Nxt V42/MNPorBfr V42/MNPorDsc MNP_or_Buf fr MNP_or_Disc Buf ferMode DirectMode LAPM_or_Disc LAPM_or_Bufr The A T command for Buffer Mode is N0. The A T command for Direct Mode is N1. The A T comman[...]

DCP Configuration 4-41 3910-A2-GN32-30 November 1996 T able 4-6 (3 of 8) V .42/MNP/Buffer Configuration Options EC Negotiat Bfr: Disable Nxt Disable Enable Disab&Switch This configuration option is only available if Async/Sync Mode is configured for Async, and Error Control Mode is configured for V42/MNPorBfr , MNP_or_Buffr , or LAPM_or_Bufr . [...]

COMSPHERE 3900 Series Modems 4-42 November 1996 3910-A2-GN32-30 T able 4-6 (4 of 8) V .42/MNP/Buffer Configuration Options Flw Cntl of DTE: CTS_to_DTE Nxt CTS_to_DTE Disable XON/XOFF This configuration option is only available if Async/Sync Mode is configured for Async, and Error Control Mode is not configured for DirectMode. Flow Control of DTE. D[...]

DCP Configuration 4-43 3910-A2-GN32-30 November 1996 T able 4-6 (5 of 8) V .42/MNP/Buffer Configuration Options XON/XOFF Psthru: Disable Nxt Disable Enable This configuration option is only available if Async/Sync Mode is configured for Async, and Flow Control of Modem is configured for XON/XOFF . XON/XOFF Passthrough. Considers an XON/XOFF charact[...]

COMSPHERE 3900 Series Modems 4-44 November 1996 3910-A2-GN32-30 T able 4-6 (6 of 8) V .42/MNP/Buffer Configuration Options Break Buf fr Ctl: Keep_Data Nxt Keep_Data Discard_Data This configuration option is only available if Async/Sync Mode is configured for Async, and Error Control Mode is not configured for DirectMode. Break Buf fer Control. Dete[...]

DCP Configuration 4-45 3910-A2-GN32-30 November 1996 T able 4-6 (7 of 8) V .42/MNP/Buffer Configuration Options BuffrDiscDelay: 10sec Nxt 10sec Disable 60sec This configuration option is only available if Async/Sync Mode is configured for Async, and Error Control Mode is not configured for DirectMode. Buffer Disconnect Delay . Determines how long t[...]

COMSPHERE 3900 Series Modems 4-46 November 1996 3910-A2-GN32-30 T able 4-6 (8 of 8) V .42/MNP/Buffer Configuration Options RdcdAsyncBufSiz: Disable End Disable Enable This configuration option is only available if Async/Sync Mode is configured for Async, and Error Control Mode is configured for BufferMode, V42MNPorBuf, MNP_or_Buffr , and LAPM_or_Bu[...]

DCP Configuration 4-47 3910-A2-GN32-30 November 1996 T able 4-7 (2 of 2) T est Configuration Options T est Timeout: Disable Nxt Disable 30sec 60sec 240sec T est Time-out. Determines how long a test runs before aborting. H Disable Allows a test to run indefinitely . H 30, 60, or 240 seconds Allows the test to run for 30 seconds, 60 seconds, or 240 s[...]

COMSPHERE 3900 Series Modems 4-48 November 1996 3910-A2-GN32-30 Misc The Miscellaneous configuration options determine specifics for various functions, including network management parameters and remote modem access. T able 4-8 shows each Misc (Miscellaneous) configuration option as it appears on the LCD, with the Sync Leased factory default settin[...]

DCP Configuration 4-49 3910-A2-GN32-30 November 1996 T able 4-8 (2 of 4) Miscellaneous Configuration Options Speaker V olume: Medium Nxt Medium Low High Speaker V olume. Controls the level of speaker volume. NOTE: Speaker V olume can also be temporarily set using the Control branch; however , a reset or power cycle will restore the modem to the Spe[...]

COMSPHERE 3900 Series Modems 4-50 November 1996 3910-A2-GN32-30 T able 4-8 (3 of 4) Miscellaneous Configuration Options NMS_Call_Msgs: CallCnct&Prg Nxt CallCnct&Prg Disable CallCnctOnly CallProgOnly NMS Call Messages. Determines if the modem status and/or call summary information is sent to the NMS. The modem can itemize status, such as Cal[...]

DCP Configuration 4-51 3910-A2-GN32-30 November 1996 T able 4-8 (4 of 4) Miscellaneous Configuration Options Diag Connection: Modem(DC) Nxt Modem(DC) NMS(CC) Disable This configuration option is not available if the LeaseLine Rate is configured for TMp and the NetworkPosition is configured for T ributary . Diagnostic Connection. Allows the configur[...]

5-1 3910-A2-GN32-30 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 3900 Series Modems 5-2 November 1996 3910-A2-GN32-30 Escape Sequence and Escape Guard Time The escape sequence is only issued when the modem is online and in Data mode. The 391x Series modem uses 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 [...]

A T Command Set and S-Registers 5-3 3910-A2-GN32-30 November 1996 Result Codes T able 5-1 lists all valid result codes for the 391x Series modem. 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 CARRIE[...]

COMSPHERE 3900 Series Modems 5-4 November 1996 3910-A2-GN32-30 T able 5-1 (2 of 2) Result Codes Numbers (1) Description Word Numbers (2) 26 15 CONNECT 7200/ EC*** Connection at 7200 bps with error control 27 5 CONNECT 1200/ EC* Connection at 1200 bps with error control 28 28 CONNECT 38400** Connection at 38,400 bps 29 14 CONNECT 19200/ EC** Connect[...]

A T Command Set and S-Registers 5-5 3910-A2-GN32-30 November 1996 T able 5-2 (1 of 3) 391x Series 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[...]

COMSPHERE 3900 Series Modems 5-6 November 1996 3910-A2-GN32-30 T able 5-2 (2 of 3) 391x Series A T Commands AT Command DCP LCD Command Sequence Description D n (cont.) @ — Quiet answer . W ait for five seconds of silence after dialing the number . If the silence is not detected, the modem sends either a NO ANSWER result to the DTE. ! — Hook fla[...]

A T Command Set and S-Registers 5-7 3910-A2-GN32-30 November 1996 T able 5-2 (3 of 3) 391x Series A T Commands AT Command DCP LCD Command Sequence Description O Return to Online or Data Mode. Returns modem to Data mode from Online Command mode. None P Pulse Dial. Sets the modem for Pulse Dial mode. ConfigureEdit Line Dialer NOTE: Pulse Mode is di[...]

COMSPHERE 3900 Series Modems 5-8 November 1996 3910-A2-GN32-30 T able 5-3 (2 of 8) 391x Series 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[...]

A T Command Set and S-Registers 5-9 3910-A2-GN32-30 November 1996 T able 5-3 (3 of 8) 391x Series A T Commands AT Command DCP LCD Command Sequence Description Z n Reset and Load Active. Z0 Loads configuration options from Active (Saved) to Active (Operating). Z1 Loads configuration options from Customer 1 to Active (Operating). Z2 Loads configurati[...]

COMSPHERE 3900 Series Modems 5-10 November 1996 3910-A2-GN32-30 T able 5-3 (4 of 8) 391x Series A T Commands AT Command DCP LCD Command Sequence Description &F n Select Factory Default Configuration Options. Loads factory configuration options into Active (Operating) area. &F0 Async Dial &F1 Sync Dial &F2 Sync Leased: Answer &F3[...]

A T Command Set and S-Registers 5-1 1 3910-A2-GN32-30 November 1996 T able 5-3 (5 of 8) 391x Series 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 and uses A T Command protocol. &M1, &Q1 Modem operates in Synchronou[...]

COMSPHERE 3900 Series Modems 5-12 November 1996 3910-A2-GN32-30 T able 5-3 (6 of 8) 391x Series A T Commands AT Command DCP LCD Command Sequence Description &V n View Configuration Options. Displays each configuration group within the Active (Operating), Active (Saved), Customer 1, and Customer 2 configuration areas as well as the telephone num[...]

A T Command Set and S-Registers 5-13 3910-A2-GN32-30 November 1996 T able 5-3 (7 of 8) 391x Series A T Commands AT Command DCP LCD Command Sequence Description D n CTS Control. D0 Forced On. Forces CTS to always ON. D1 Standard RS232. D2 Wink When Disconnect. CTS is turned OFF for 1 to 2 seconds upon a disconnect. D3 Follows DTR. The state of [...]

COMSPHERE 3900 Series Modems 5-14 November 1996 3910-A2-GN32-30 T able 5-3 (8 of 8) 391x Series A T Commands AT Command DCP LCD Command Sequence Description T n No Data Disconnect T imer . T0 Disable. Tn Where n is a value from 1 to 255 in 1-minute increments. ConfigureEdit Line Dialer NOTE: The factory default value is country dependent. X n[...]

A T Command Set and S-Registers 5-15 3910-A2-GN32-30 November 1996 S-Register Format S-Registers can be displayed and/or modified when the modem is in Command mode. T o display the value of an S-Register , issue the following command: TYPE: AT S n ? Where: n is the register number . PRESS: Enter T o modify the value of an S-Register , issue the fol[...]

COMSPHERE 3900 Series Modems 5-16 November 1996 3910-A2-GN32-30 T able 5-4 (2 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S5 Backspace Character . Register determines ASCII value used as the backspace (Backspace key). This character moves the cursor to the left and erases the previous character . Enter a value fro[...]

A T Command Set and S-Registers 5-17 3910-A2-GN32-30 November 1996 T able 5-4 (3 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S40 Auto Make Busy . Register determines if the modem goes of f-hook under certain conditions. This register should only be enabled when the modem is located behind a user ’s Private Branc[...]

COMSPHERE 3900 Series Modems 5-18 November 1996 3910-A2-GN32-30 T able 5-4 (4 of 13) 391x Series 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 th[...]

A T Command Set and S-Registers 5-19 3910-A2-GN32-30 November 1996 T able 5-4 (5 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S47 Auto Dial Standby . Register determines if the modem performs an automatic dial standby if in Dial Backup mode. Register has the following values: 0 = Disable 1 = 15 minutes 2 = 1 hour 3[...]

COMSPHERE 3900 Series Modems 5-20 November 1996 3910-A2-GN32-30 T able 5-4 (6 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S53 V .54 Address. Identifies the address of the modem to be placed in a loopback test. Register has the following values: 0 = Disable 1–34 = Modem address The factory setting is Disable. Con[...]

A T Command Set and S-Registers 5-21 3910-A2-GN32-30 November 1996 T able 5-4 (7 of 13) 391x Series 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 int[...]

COMSPHERE 3900 Series Modems 5-22 November 1996 3910-A2-GN32-30 T able 5-4 (8 of 13) 391x Series 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 Mana[...]

A T Command Set and S-Registers 5-23 3910-A2-GN32-30 November 1996 T able 5-4 (9 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S72 RTS Antistreaming. Register determines the antistreaming operation of the modem. Register has the following values: 0 = Disable 1 = 10 sec 2 = 30 sec 3 = 1 min 4 = 2 min 5 = 3 min 6 = 5 [...]

COMSPHERE 3900 Series Modems 5-24 November 1996 3910-A2-GN32-30 T able 5-4 (10 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S82 V .32bis Autorate (Leased Line). Register determines if Autorating is used on leased lines when connected in V .32bis mode. Register has the following values: 0 = Enable 1 = Disable The fa[...]

A T Command Set and S-Registers 5-25 3910-A2-GN32-30 November 1996 T able 5-4 (1 1 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S89 V .42 Automatic Request for Retransmission (ARQ) Window Size Increase. Register allows the ARQ window size to be set to a value from six frames to fifteen frames. For best performance,[...]

COMSPHERE 3900 Series Modems 5-26 November 1996 3910-A2-GN32-30 T able 5-4 (12 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S92 V .29 Train On Data. When enabled, the modem receiver can train based upon the incoming data or a training sequence from the distant modem. This function is necessary for a remote (tributa[...]

A T Command Set and S-Registers 5-27 3910-A2-GN32-30 November 1996 T able 5-4 (13 of 13) 391x Series S-Registers S-Register DCP LCD Command Sequence Description S97 Reduced Asynchronous Buffer Size. Register limits the modem’ s buffer size to a maximum of 20 characters. Register has the following values: 0 = Disable 1 = Enable The factory setting[...]

6-1 3910-A2-GN32-30 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 3900 Series Modems Models 3910 and 391 1 Point-T o-Point/Multipoint Installation and Operation Manual, Documen[...]

A-1 3910-A2-GN32-30 November 1996 Menu T ree Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview Pages A-2 and A-3 provide a menu tree for the 391x Series modems. A[...]

COMSPHERE 3900 Series Modems A-2 November 1996 3910-A2-GN32-30 J J JJ J 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) Choose Function DeviceHS VF Identity DTE Options Reco[...]

Menu T ree A-3 3910-A2-GN32-30 November 1996 Y z z Y Y Y Y Y Y Y Y Y Y Y z Y F F J J J J J from previous page 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[...]

B-1 3910-A2-GN32-30 November 1996 T roubleshooting Overview B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview This appendix points out basic problems that can occur when operating a 391x Series modem. Use T ables B-1 through B-6 to check out these problems. If you are having data co[...]

COMSPHERE 3900 Series Modems B-2 November 1996 3910-A2-GN32-30 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 Origin[...]

T roubleshooting B-3 3910-A2-GN32-30 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 3900 Series Modems B-4 November 1996 3910-A2-GN32-30 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 off-[...]

T roubleshooting B-5 3910-A2-GN32-30 November 1996 T able B-5 (2 of 2) Modem — VF Connection Symptom Action The modem dials but does not connect. If the modem is operating behind a PBX, determine if a 9 and comma are needed before the telephone number . V erify whether T one or Pulse dialing is needed. V erify that both modems are configured the [...]

C-1 3910-A2-GN32-30 November 1996 Pin Assignments Overview C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EIA-232-D Pin Assignments C-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF Connector Pin Assignments C-3 . . . . . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 3900 Series Modems C-2 November 1996 3910-A2-GN32-30 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 Transmit Data 3 RXD BB 104 DCE Receive Data 4 RTS CA 105 DTE Re[...]

Pin Assignments C-3 3910-A2-GN32-30 November 1996 VF Connector Pin Assignments T able C-2 lists the connector pin assignments for Model 3910 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: TX/R[...]

COMSPHERE 3900 Series Modems C-4 November 1996 3910-A2-GN32-30 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 3910-A2-GN32-30 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 3900 Series Modems C-6 November 1996 3910-A2-GN32-30 T o connect a Model 3910 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 2[...]

D-1 3910-A2-GN32-30 November 1996 CCITT V .25bis Dialing Commands and Responses Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands D-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request with Number Provided (CRN) D-2 .[...]

COMSPHERE 3900 Series Modems D-2 November 1996 3910-A2-GN32-30 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 Prov[...]

CCITT V .25bis Dialing Commands and Responses D-3 3910-A2-GN32-30 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 [...]

COMSPHERE 3900 Series Modems D-4 November 1996 3910-A2-GN32-30 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 comma[...]

CCITT V .25bis Dialing Commands and Responses D-5 3910-A2-GN32-30 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 telephon[...]

COMSPHERE 3900 Series Modems D-6 November 1996 3910-A2-GN32-30 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 [...]

CCITT V .25bis Dialing Commands and Responses D-7 3910-A2-GN32-30 November 1996 T able D-1 V .25bis Commands V .25bis Command Description A T Command/ S-Register Equivalent Call Request Commands CRN Call Request with Number Provided AT D CRS Call Request with Memory Address A TDS Call Answer Commands INC Incoming Call Indication RING DIC Disregard [...]

COMSPHERE 3900 Series Modems D-8 November 1996 3910-A2-GN32-30 T able D-2 lists V .25bis response messages supported by the 391x Series modems. T able D-2 V .25bis Response Messages V .25bis Command Description A T Command/ Result Code Equivalent Call Response CFI Call Failure Indication BUSY , NO ANSWER, NO CARRIER, NO DIAL T ONE, ERROR CNX Call C[...]

E-1 3910-A2-GN32-30 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 3900 Series Modems E-2 November 1996 3910-A2-GN32-30 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 3910-A2-GN32-30 November 1996 T able E-1 (3 of 4) ASCII Characters Hexadecimal ASCII V alue Key Control Character Decimal ASCII V alue 3B 059 ; 3C 060 < 3D 061 = 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[...]

COMSPHERE 3900 Series Modems E-4 November 1996 3910-A2-GN32-30 T able E-1 (4 of 4) ASCII Characters Hexadecimal ASCII V alue Key Control Character Decimal ASCII V alue 5F 095 - 60 096 ( 61 097 a 62 098 b 63 099 c 64 100 d 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 [...]

F-1 3910-A2-GN32-30 November 1996 Default Configuration Options Overview F-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview T able F-1 in this appendix lists all default configuration options for the factory preset configurations. An N/A indicates that the value for this configuratio[...]

COMSPHERE 3900 Series Modems F-2 November 1996 3910-A2-GN32-30 T able F-1 (1 of 7) 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 I nterface Async/Sync Mode Sync Async Sync[...]

Default Configuration Options F-3 3910-A2-GN32-30 November 1996 T able F-1 (2 of 7) 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 D ialer DT E D iale r T ype Disable AT Di[...]

COMSPHERE 3900 Series Modems F-4 November 1996 3910-A2-GN32-30 T able F-1 (3 of 7) 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 Line D ialer Auto-Answer Rin g C ount 1 111111[...]

Default Configuration Options F-5 3910-A2-GN32-30 November 1996 T able F-1 (4 of 7) 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 Leased L ine Lease d M ode 4-wir e L L Answe [...]

COMSPHERE 3900 Series Modems F-6 November 1996 3910-A2-GN32-30 T able F-1 (5 of 7) 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 Error C ontrol Mode N/ A ( D[...]

Default Configuration Options F-7 3910-A2-GN32-30 November 1996 T able F-1 (6 of 7) 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 Misc Straps W hen Disconnected N o C hange N [...]

COMSPHERE 3900 Series Modems F-8 November 1996 3910-A2-GN32-30 T able F-1 (7 of 7) 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 Entry W ai t T ime 2 0 s ec 2 0 s ec [...]

G-1 3910-A2-GN32-30 November 1996 Sample Configuration Overview G-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Point-to-Point G-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuration Options G-2 . . . . . . . . . . . . . . . . . .[...]

COMSPHERE 3900 Series Modems G-2 November 1996 3910-A2-GN32-30 Point-to-Point Figure G-1 shows a sample configuration for point-to-point applications. 3910 A Cable 1 Cable 1 Cable 2 Cable 2 Leased 19200(V32t) 19200(V32t) TX TX DTE (Sync) DTE (Sync) 3910 B Figure G-1. Sample Configuration — Point-to-Point Configuration Options 3910 A Use Sync Leas[...]

Sample Configuration G-3 3910-A2-GN32-30 November 1996 Multipoint Figure G-2 shows a sample configuration for multipoint applications. TMp control modems can accept mixed inbound rates from tributary modems. For example, one inbound link may be configured for 14.4 kbps while another link experiencing line impairments may be configured for 9.6 kbps.[...]

COMSPHERE 3900 Series Modems G-4 November 1996 3910-A2-GN32-30 Point-to-Point with Automatic Dial Backup Figure G-3 shows a sample configuration for point-to-point applications with automatic dial backup. Cable 1 Cable 1 Cable 2 Cable 2 Leased 19200(V32t) 19200(V32t) TX TX Cable 3 Cable 3 Dial DTE (Sync) DTE (Sync) 3910 A 3910 B Figure G-3. Sample [...]

Sample Configuration G-5 3910-A2-GN32-30 November 1996 Point-to-Point with Network Management Figure G-4 shows a sample configuration for point-to-point applications with network management. NMS (6700 or 6800) Adapter (002-0025-0031) CC IN 3600- F3- 300 Hubbing Device Cable 4 3910 A Cable 1 Cable 1 Cable 2 Cable 2 Leased 19200(V32t) 19200(V32t) TX [...]

COMSPHERE 3900 Series Modems G-6 November 1996 3910-A2-GN32-30 Carrier with Network Management Figure G-5 shows a sample configuration for COMSPHERE 3000 Series Carrier applications with network management. NMS (6700 or 6800) Adapter (002-0025-0031) CC IN SDU Circuit Card COMSPHERE 3000 Series Carrier Cable 4 391 1 Cable 1 Cable 1 Cable 2 Cable 2 L[...]

Sample Configuration G-7 3910-A2-GN32-30 November 1996 Extended Multipoint Figure G-6 shows a sample configuration for extended multipoint applications. Cable 1 Cable 2 Cable 2 Leased 19200(V32t) 19200(V32t) TX TX Cable 1 Cable 1 Cable 1 4800 4800 4800 4800 Cable 1 Cable 1 Cable 1 Cable 5 4800 4800 4800 4800 DTE (Sync) DTE (Sync) DTE (Sync) DTE (Sy[...]

COMSPHERE 3900 Series Modems G-8 November 1996 3910-A2-GN32-30 Configuration Options 3920 A Use Sync Leased (Answer) default configuration options with the following exception: Rate at 19.2K Set ports 1, 2, 3, and 4 to 4800. 3920 B Use Sync Leased (Originate) default configuration options with the following exceptions: TX Clock Sour ce Set to RXC_L[...]

Sample Configuration G-9 3910-A2-GN32-30 November 1996 Extended Diagnostics Figure G-7 shows a sample configuration for extended diagnostics. Figure G-7. Sample Configuration  Extended Diagnostics Configuration Options 3910 A Use Sync Leased (Answer) default configuration options with the following exception: Network position Set to Control. 391[...]

COMSPHERE 3900 Series Modems G-10 November 1996 3910-A2-GN32-30 3910 D,F ,H Use Sync Leased (Answer) default configuration options with the following exceptions: TX Clock Sour ce Set to RXC_Loop. 3910 E,G Use Sync Leased (Answer) default configuration options with the following exceptions: Diagnostic Connection Set to Modem (DC). Network Position S[...]

H-1 3910-A2-GN32-30 November 1996 Equipment List Equipment Feature/ Part Number Model 3910 3910-A1-XXX Model 391 1 391 1-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 Crossover Cabl[...]

GL-1 3910-A2-GN32-30 November 1996 Glossary Active (Operating) A configuration area containing configuration options currently in use by the modem. Anytime 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 contain[...]

COMSPHERE 3900 Series Modems GL-2 November 1996 3910-A2-GN32-30 automatic dial backup When leased-line operation fails, this function forces the modem to dial the telephone number stored in directory location 1. automatic dial standby When operating in Dial Backup mode, this function forces the modem to periodically check the quality of the leased [...]

Glossary GL-3 3910-A2-GN32-30 November 1996 CCITT An advisory committee (Consultative Committee on International T elephone and T elegraph) established by the United Nations to recommend communications standards and policies. CCITT V .22 A standard for modems operating full-duplex over dial networks at 1200 bps. CCITT V .22bis A standard for modems[...]

COMSPHERE 3900 Series Modems GL-4 November 1996 3910-A2-GN32-30 constant carrier mode The modem transmits a carrier signal constantly , regardless of R TS. Control Channel (CC) The diagnostic interface between an NMS and a network device. control modem A control modem polls downstream tributary modems across the analog channel. controlled carrier m[...]

Glossary GL-5 3910-A2-GN32-30 November 1996 dial command modifiers A modifier used in the dial string that instructs the modem how to process a dialed telephone number . dial line A communications circuit that is established by a switched circuit connection in the dial network. dial network See PSTN. Dial Standby A function available when the modem[...]

COMSPHERE 3900 Series Modems GL-6 November 1996 3910-A2-GN32-30 extended network The extension of a circuit where the tributary DCE is connected to a downstream (extended) control DCE. extended r esult codes An asynchronous message (in either numbers or words) that includes VF data rate and error control information the modem sends to the DTE after[...]

Glossary GL-7 3910-A2-GN32-30 November 1996 leased line A private telephone line connection exclusively for the user . No dialing is necessary . LED Light Emitting Diode. A light or status indicator on the DCP that glows in response to the presence of a certain condition (e.g., an alarm). Link The physical connection between one location and anothe[...]

COMSPHERE 3900 Series Modems GL-8 November 1996 3910-A2-GN32-30 NMS Network Management System. A set of diagnostic and configuration management tools for a data communication network, consisting of software programs and dedicated computer hardware. off-hook A telephone or modem is being used. on-hook A telephone or modem is not being used. Originat[...]

Glossary GL-9 3910-A2-GN32-30 November 1996 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 local modem, the remote [...]

COMSPHERE 3900 Series Modems GL-10 November 1996 3910-A2-GN32-30 Time Division Multiplexer (TDM) 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[...]

Index-1 3910-A2-GN32-30 November 1996 Index A Abort (test), 3-46–3-47 ac power requirements, 1-9 Active (Operating) configurations, 4-1 Active (Saved) configurations, 4-1 address, network management, 3-26, 4-50 analog loopback test, 3-48–3-49 answer access security , 6-2–6-4 answering a call auto-answer , 3-63, 4-25 manual answer , 3-57, 3-64[...]

COMSPHERE 3900 Series Modems Index-2 November 1996 3910-A2-GN32-30 C cables, 2-4, 2-5, H-1 Call Setup branch, 3-8, 3-54–3-62 Canadian government requirements, 1-7 Clone Remote, 3-36–3-42 compatibility , 1-8 COMSPHERE 3000 Series Carrier Model 391 1 installation and removal, 2-9–2-12 network interface module (NIM), 2-2, 3-35 service line, 3-35[...]

Index Index-3 3910-A2-GN32-30 November 1996 Dial Line configuration options group, 4-30–4-32 digital loopback, 3-49–3-51 dimensions, 1-9 directory , telephone number , 3-59–3-62 disconnecting a call, 3-56–3-57 Download Software, 3-35–3-42 DTE connection, 2-4, B-3 status, 3-4–3-6, 3-21 DTE Dialer configuration options group, 4-19–4-24 [...]

COMSPHERE 3900 Series Modems Index-4 November 1996 3910-A2-GN32-30 H handshaking sequence, 3-63, 3-64 hang up, 3-56–3-57 hardware part number (HPt #), 3-20 HDLC, 4-20, D-1 Health and Status definitions, 3-23–3-24 I Identity , 3-20 indicators definitions, 3-7 status (LEDs), 3-4–3-6 installation Model 3910, 2-2–2-12 Model 391 1, 2-9–2-1 1 K[...]

Index Index-5 3910-A2-GN32-30 November 1996 M Make Busy , 3-34 manual dial. See T alk/Data menu structure, 3-8 quick configuration display , 3-14 tree, A-1–A-3 messages LCD, 3-9–3-14, 3-23–3-24 result codes, 5-3–5-4 Misc configuration options group, 4-48–4-51 mixed inbound rates, 1-2, 4-34, G-3 model number (Mod #), 3-20 modifiers, dial s[...]

COMSPHERE 3900 Series Modems Index-6 November 1996 3910-A2-GN32-30 R rates automatic control, 4-35 dial line, 1-10, 4-30, 5-17 leased line, 1-10, 4-34, 5-18 rear connector plate, 1-4 rear panel connectors, 1-4–1-5, 2-3, C-2 Record, Status branch, 3-24–3-25 Remote access password, 3-65, 3-67, 3-68, 4-5–4-8, 4-49 branch, 3-8, 3-65–3-68 remote[...]

Index Index-7 3910-A2-GN32-30 November 1996 T T alk/Data branch, 3-8, 3-62–3-64 telephone, external, 3-62, C-4 technical specifications, 1-8–1-10 telephone, external, 3-62, C-4 telephone numbers display , 3-56 storage, 3-60 T est branch, 3-8, 3-46–3-53 Abort, 3-46–3-47 Local Analog Loopback, 3-48–3-49 Local Digital Loopback, 3-50–3-51 P[...]