Paradyne 3830 manuale d’uso

COMSPHERE 3800 SERIES MODEMS MODEL 3830 USER’S GUIDE Document No. 3830-A2-GB91-30 August 1998[...]

COMSPHERE 3800 Series Modems – Model 3830 A August 1998 3830-A2-GB91-30 COMSPHERE 3800 Series Modems Model 3830 User ’ s Guide 3830-A2-GB91-30 4th Edition (August 1998) Changes and enhancements to the product and to the information herein will be documented and issued as a new release or a limited revision of this manual. For the Model 3830 sta[...]

T rademarks B 3830-A2-GB91-30 August 1998 W arranty , Sales, and Service Information Contact your sales or service representative directly for any help needed. For additional information concerning warranty , sales, service, repair , installation, documentation or training, use one of the following methods: • V ia the Internet: V isit the Paradyn[...]

COMSPHERE 3800 Series Modems – Model 3830 C August 1998 3830-A2-GB91-30 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. [...]

Safety Instructions D 3830-A2-GB91-30 August 1998 8. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If products installed in separate buildings are interconnected , the voltage potential may cause a hazardous condition. Consult a qualified electrical consultant to determine whether or not this p[...]

COMSPHERE 3800 Series Modems – Model 3830 E August 1998 3830-A2-GB91-30 Notices                  ?[...]

Safety Instructions F 3830-A2-GB91-30 August 1998 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 [...]

COMSPHERE 3800 Series Modems – Model 3830 G August 1998 3830-A2-GB91-30 6. 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 instructi[...]

Safety Instructions H 3830-A2-GB91-30 August 1998 Canada Notice T o The Users Of The Canadian Public Switched T elephone 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 Dep[...]

COMSPHERE 3800 Series Modems – Model 3830 I August 1998 3830-A2-GB91-30 termination on a loop may consist of any combination of devices subject only to the requirement that the total of the Load Numbers of all devices does not exceed 100. If your equipment is in need of repair , refer to the procedure in the Government Requir ements and Equipment[...]

i 3830-A2-GB91-30 August 1998 T able of Contents Preface Objectives and Reader Assumptions v . . . . . . . . . . . . . . . . . . How to Use This Manual v . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. Introduction Overview     ?[...]

COMSPHERE 3800 Series Modems – Model 3830 ii August 1998 3830-A2-GB91-30 4. A T Command Set and S-Registers Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Command Guidelines 4-3 . . . . . . . . . . . . . . . . . . . [...]

T able of Contents iii 3830-A2-GB91-30 August 1998 List of Figures Figures Page 1-1 Model 3830 Front Panel 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Model 3830 Rear Panel 2-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1 W iring Diagram – 8-Position to 6-Position Conversion Cable C-4 . . . . . . . .[...]

COMSPHERE 3800 Series Modems – Model 3830 iv August 1998 3830-A2-GB91-30 List of T ables T ables Page 1-1 Model 3830 LEDs 1-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Result Codes 4-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 Model 3830 A T Commands 4-7 . . . . . . . . . .[...]

v 3830-A2-GB91-30 August 1998 Preface Objectives and Reader Assumptions This manual describes how to install and operate the Model 3830 standalone modem. This manual assumes that you have a basic understanding of dial modems and their operation. How to Use this Manual Chapter 1 provides information about the 3830 modem’ s hardware and software fe[...]

COMSPHERE 3800 Series Modems – Model 3830 vi August 1998 3830-A2-GB91-30 Related Documents 3810-A2-GB30 COMSPHERE 3800 Series Modems, Models 3810, 381 1, and 3820, User ’ s Guide 6700-A2-GY31 COMSPHERE 6700 Series Network Management System User ’ s Guide Contact your local sales representative, service representative, or distributor directly [...]

1-1 3830-A2-GB91-30 August 1998 Introduction Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Features 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . COMSPHERE Model 3830 Modem Front Panel and Status Indicators 1-3 [...]

COMSPHERE 3800 Series Modems – Model 3830 1-2 August 1998 3830-A2-GB91-30 Features The 3830 modem has a wide variety of features, including: • Dial-Line Modulations: V .32 terbo (19,200 and 16,800 bps), ITU-T V .32bis (14,400, 12,000, 9600, 7200, and 4800 bps), V .32 (9600 and 4800 bps), V .22bis (2400 bps), V .22 (1200 bps), V .21 (300 bps), B[...]

1. Introduction 1-3 3830-A2-GB91-30 August 1998 • Compatibility with COMSPHERE 3800 Series modems’ Remote Access Mode, which allows users of 3810, 381 1, and 3820 modems to view the configuration options of a 3830 modem from their front panel LCD displays. • Storage of up to 10 telephone numbers to directory locations. • T wo factory-define[...]

COMSPHERE 3800 Series Modems – Model 3830 1-4 August 1998 3830-A2-GB91-30 T able 1-1 (1 of 2) Model 3830 LEDs Label Color Indicates PWR green Power ON. Power is on and the modem is capable of operating. ALRM red Alarm Flashing The modem has detected an internal malfunction. OH green Off-Hook ON. The modem is off-hook. OFF . The modem is on-hook. [...]

1. Introduction 1-5 3830-A2-GB91-30 August 1998 T able 1-1 (2 of 2) Model 3830 LEDs Label Indicates Color RA TE yellow Rate ON. The modem is connected at a data rate lower than the data rate it is configured for . OFF . The modem is connected at its configured data rate. AT yellow A T Command Set ON. The A T command set is disabled. OFF . The A T c[...]

COMSPHERE 3800 Series Modems – Model 3830 1-6 August 1998 3830-A2-GB91-30[...]

2-1 3830-A2-GB91-30 August 1998 Model 3830 Modem Installation Overview 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model 3830 Modem Package 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customer-Supplied Equipment 2-2 . . . . . . . . . . . . . . . . . . . [...]

COMSPHERE 3800 Series Modems – Model 3830 2-2 August 1998 3830-A2-GB91-30 • T wo ferrite chokes and cable ties • Fax software and documentation (if fax option installed) If any hardware components are damaged, notify your service representative. Return equipment using the procedures described in the Government Requir ements and Equipment Retu[...]

2. Model 3830 Modem Installation 2-3 3830-A2-GB91-30 August 1998 • An 8-pin modular keyed jack for external telephone set use only . • An 8-pin modular keyed jack for dial (PSTN) lines or 2-wire leased lines. • A 25-pin DB-25-S receptacle for DTE interface. Figure 2-1. Model 3830 Rear Panel[...]

COMSPHERE 3800 Series Modems – Model 3830 2-4 August 1998 3830-A2-GB91-30 DTE Connection Use the following procedures to connect the EIA-232-D cable and ferrite choke from the modem to the DTE: 1. Make sure the modem’ s rear panel power switch is Of f. 2. Connect the DB-25-P (male) connector on the cable to the DB-25-S (female) connector labele[...]

2. Model 3830 Modem Installation 2-5 3830-A2-GB91-30 August 1998 2-Wire Leased-Line Connection Use the following procedures to connect a Model 3830 modem to the 6-pin, center pair , leased-line network interface. (For 2-wire leased line connection to a JM8 network interface, refer to Appendix C, Pin Assignments .) 1. Insert the 6-position, 4-conduc[...]

COMSPHERE 3800 Series Modems – Model 3830 2-6 August 1998 3830-A2-GB91-30 T o ensure compliance with FCC Part 15 Regulations, a ferrite choke must be installed on the power transformer cable. 1. Open the ferrite choke, place it around the power transformer cable as close as possible to the connector attached to the modem, and snap the ferrite cho[...]

2. Model 3830 Modem Installation 2-7 3830-A2-GB91-30 August 1998 Selecting Factory Configuration Options After the modem passes the power-up self-test, it can be configured for operation using one of two factory preset configurations. These factory preset templates contain the most commonly used configuration options (straps) for Asynchronous Dial [...]

COMSPHERE 3800 Series Modems – Model 3830 2-8 August 1998 3830-A2-GB91-30 1. Use the A T&F&W command to load the appropriate factory configuration to the appropriate storage area. Enter the following: TYPE: AT &Fy&Wn Where: y is one of the following Factory configurations: 0 for Async Dial 3 for UNIX Dial 5 for Cellular (Mobile) 6[...]

2. Model 3830 Modem Installation 2-9 3830-A2-GB91-30 August 1998 T o establish a connection with a remote modem, use the D (Dial) command. Refer to Chapter 4, A T Commands and S-Registers , for more information. Recovering A T Commands A T commands are issued from asynchronous terminals and personal computers. Certain dialing methods, such as V .25[...]

COMSPHERE 3800 Series Modems – Model 3830 2-10 August 1998 3830-A2-GB91-30 If these characters are not echoed back to the DTE screen after the power -up self-test is complete, then the modem is still in Dumb mode and maintains its current configuration. T urn the modem Off and then ON again, and repeat Step 1. 2. Once the characters are echoed ba[...]

2. Model 3830 Modem Installation 2-1 1 3830-A2-GB91-30 August 1998 Initialization Strings An initialization string contains several A T commands that are entered at once to program the modem for a specific application. The following initialization strings identify essential A T commands that directly impact modem operation for a particular applicat[...]

COMSPHERE 3800 Series Modems – Model 3830 2-12 August 1998 3830-A2-GB91-30 Synchronous Leased-Line Applications For synchronous leased-line operation, create the following initialization string with the following commands: TYPE: A T&F &D1 &S1 S44=n S45=n S82=n &M1 &Ln &W Where: n is the value for the A T command. Refer to [...]

3-1 3830-A2-GB91-30 August 1998 Fax Operation Overview 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fax Operation 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview The procedures for sending and receiving facsimile documents w[...]

COMSPHERE 3800 Series Modems – Model 3830 3-2 August 1998 3830-A2-GB91-30 • Y ou must have configured your modem according to the specifications of your fax software manual. For example: – Some fax software requires that the modem have Auto-Answer disabled. Y ou can set this with the A TS0=0 command. – Some fax software requires that the mo[...]

4-1 3830-A2-GB91-30 August 1998 A T Command Set and S-Registers Overview 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Modes 4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switching Between Data Mode and Online Command Mode 4[...]

COMSPHERE 3800 Series Modems – Model 3830 4-2 August 1998 3830-A2-GB91-30 Switching Between Data Mode and Online Command Mode Sometimes it is necessary to change operating parameters while the modems are online. The Escape Sequence allows you to toggle the modem between Data mode and online Command mode while maintaining a connection with the rem[...]

4. A T Command Set and S-Registers 4-3 3830-A2-GB91-30 August 1998 Command Guidelines Review the following guidelines before using any A T Commands. • The escape sequence (+ + +) is used to enter online Command mode from Data mode. • The asynchronous character format for the A T command set must be one of the following: – 8 data bits + no par[...]

COMSPHERE 3800 Series Modems – Model 3830 4-4 August 1998 3830-A2-GB91-30 Result Codes T able 4-1 lists all valid result codes for the Model 3830 modem. Refer to the Vn and Xn commands for more on result codes. T able 4-1 (1 of 3) Result Codes Numbers (1) Numbers (2) Word Description 0 0 OK Command executed 1 1 CONNECT Modem connected to line 2 2[...]

4. A T Command Set and S-Registers 4-5 3830-A2-GB91-30 August 1998 T able 4-1 (2 of 3) Result Codes Numbers (1) Description Word Numbers (2) 16 15 CONNECT 7200* Connection at 7200 bps 17 17 CONNECT 16800* Connection at 16,800 bps 19 1 CONNECT 300* Connection at 300 bps 20 10 CONNECT 2400/ EC*** Connection at 2400 bps with error control 21 11 CONNEC[...]

COMSPHERE 3800 Series Modems – Model 3830 4-6 August 1998 3830-A2-GB91-30 T able 4-1 (3 of 3) Result Codes Numbers (1) Description Word Numbers (2) 30 30 CONNECT 57600** Connection at 57,600 bps 32 32 CONNECT 76800** Connection at 76,800 bps 34 34 CONNECT 1 15200** Connection at 1 15,200 bps ** Appears when the Extended Result Codes configuration[...]

4. A T Command Set and S-Registers 4-7 3830-A2-GB91-30 August 1998 T able 4-2 (1 of 23) Model 3830 A T Commands ***  A T Command Recovery Mode Allows the modem to remain in Asynchronous data mode so that A T commands can be used to change the modem’s current configuration. Use this command when A T commands are disabled or the modem is operati[...]

COMSPHERE 3800 Series Modems – Model 3830 4-8 August 1998 3830-A2-GB91-30 T able 4-2 (2 of 23) Model 3830 A T Commands D n  Dial Begins the dialing sequence. The dial string n (modifiers and telephone number) is entered after the D command. Any digit 0–9, * , # , A, B, C, D, may be dialed as a DTMF tone. Only the digits 0–9 can be dialed i[...]

4. A T Command Set and S-Registers 4-9 3830-A2-GB91-30 August 1998 T able 4-2 (3 of 23) Model 3830 A T Commands D n , continued R – Reverse Dial mode. Causes the originating modem to send out an answertone once it no longer detects ringback. (Ringback is the ring you hear at the originating site when making a call.) The R parameter must be the la[...]

COMSPHERE 3800 Series Modems – Model 3830 4-10 August 1998 3830-A2-GB91-30 T able 4-2 (4 of 23) Model 3830 A T Commands I n  Identification Provides useful information when upgrading or servicing the product. I 0 Displays product code (default is 144). I 1 Displays 3-digit firmware revision number . I 2 Performs an EPROM check. I 3 Displays se[...]

4. A T Command Set and S-Registers 4-1 1 3830-A2-GB91-30 August 1998 T able 4-2 (5 of 23) Model 3830 A T Commands Q n  Result Codes Result codes are informational messages (such as Connect and Ring) sent from the modem and displayed on the asynchronous DTE terminal. Refer to T able 4-1 for a list of result codes. Q0 Enables modem to send result [...]

COMSPHERE 3800 Series Modems – Model 3830 4-12 August 1998 3830-A2-GB91-30 T able 4-2 (6 of 23) Model 3830 A T Commands X n  Extended Result Code, Dial T one Detect, and Busy T one Detect The X n command sets three configuration options simultaneously: Ext Dial Tone Busy T one Result Code Detect Detect X0 Disable Disable Disable X1 Enable Disa[...]

4. A T Command Set and S-Registers 4-13 3830-A2-GB91-30 August 1998 T able 4-2 (7 of 23) Model 3830 A T Commands X n , continued BUSY TONE DETECT Sets the modem to monitor for Busy T one (Enable) or ignore Busy T one (Disable). Disable. Modem ignores busy tone. Enable. Modem monitors for busy tone. Y n  Long Space Disconnect Determines the modem[...]

COMSPHERE 3800 Series Modems – Model 3830 4-14 August 1998 3830-A2-GB91-30 T able 4-2 (8 of 23) Model 3830 A T Commands &C n  LSD Control Line Signal Detect (LSD) is a signal indicating that the carrier signal is being received from the remote modem. It is normally turned Off to the DTE when the power level of the received carrier signal d[...]

4. A T Command Set and S-Registers 4-15 3830-A2-GB91-30 August 1998 T able 4-2 (9 of 23) Model 3830 A T Commands &D n  DTR Action Data T erminal Ready (DTR) is a signal from the DTE to the modem indicating that the DTE is connected and ready for operation. & D0 Ignore. Modem ignores the true status of DTR and treats it as always ON. &[...]

COMSPHERE 3800 Series Modems – Model 3830 4-16 August 1998 3830-A2-GB91-30 T able 4-2 (10 of 23) Model 3830 A T Commands &F n  Select Factory Default Configuration Options (cont’d) If ETC is installed and your modem is attached to a cellular telephone, use the &F5 command to configure the modem for cellular communications. &F5 se[...]

4. A T Command Set and S-Registers 4-17 3830-A2-GB91-30 August 1998 T able 4-2 (1 1 of 23) Model 3830 A T Commands & I n  Dial T ransmit Level for Cellular Auto When Dial T ransmit Level T ype is set to Permissive, & I n sets Dial T ransmit Level to a value between –10 and –32 dBm. If Enhanced Throughput Cellular (ETC) is installed, [...]

COMSPHERE 3800 Series Modems – Model 3830 4-18 August 1998 3830-A2-GB91-30 T able 4-2 (12 of 23) Model 3830 A T Commands &Mn or &Qn  Async/Sync Mode and DTE Dialer T ype Sets the modem for either asynchronous or synchronous operation and selects the type of dialing method the modem uses. &M0, &Q0 Modem operates in Asynchronous [...]

4. A T Command Set and S-Registers 4-19 3830-A2-GB91-30 August 1998 T able 4-2 (13 of 23) Model 3830 A T Commands &R n  RTS Action Request-to-Send (RTS) is a signal from the DTE to the modem indicating the DTE has data to send to the modem. &R0 Standard EIA-232. DTE controls RTS to the modem in normal EIA-232-D operation. RTS must be ON [...]

COMSPHERE 3800 Series Modems – Model 3830 4-20 August 1998 3830-A2-GB91-30 T able 4-2 (14 of 23) Model 3830 A T Commands &S n  DSR Control Data Set Ready (DSR) is a signal from the modem to the DTE indicating the modem is connected and ready for operation. &S0 Forced On. Forces DSR output ON constantly . This is usually used for leased[...]

4. A T Command Set and S-Registers 4-21 3830-A2-GB91-30 August 1998 T able 4-2 (15 of 23) Model 3830 A T Commands &T n  T ests &T0 Abort. Stops any test in progress. &T1 Local Analog Loop. &T2 Pattern. T ransmits and receives a 51 1 Bit Error Rate T est (BERT). *&T3 Local Digital Loopback test. &T4 Enables Receive Remote [...]

COMSPHERE 3800 Series Modems – Model 3830 4-22 August 1998 3830-A2-GB91-30 T able 4-2 (16 of 23) Model 3830 A T Commands &V n  V iew Configuration Options Displays each configuration group within the Active (Operating), Active (Saved), Customer 1, and Customer 2 configuration areas as well as the telephone numbers stores in directory locat[...]

4. A T Command Set and S-Registers 4-23 3830-A2-GB91-30 August 1998 T able 4-2 (17 of 23) Model 3830 A T Commands &Z n= x  Store T elephone Numbers Modem saves the telephone number and dial command modifiers (if any) entered for x (up to 40 characters in length) in Directory Location n (1–10). The DS command dials numbers stored this way .[...]

COMSPHERE 3800 Series Modems – Model 3830 4-24 August 1998 3830-A2-GB91-30 T able 4-2 (18 of 23) Model 3830 A T Commands C n  Error Control Negotiate Buffer Determines if the answering modem buffers the data that it received from the remote modem during an interval in which the modem attempts to establish a connection using error control. Onl[...]

4. A T Command Set and S-Registers 4-25 3830-A2-GB91-30 August 1998 T able 4-2 (19 of 23) Model 3830 A T Commands K n  Buffer Control, Send Break Control, Break Forces Escape The K n command sets three configuration options simultaneously: Break Send Break Buffer Break Forces Control Control Escape K0 Discard Data Break First Enable K1 Disca[...]

COMSPHERE 3800 Series Modems – Model 3830 4-26 August 1998 3830-A2-GB91-30 T able 4-2 (20 of 23) Model 3830 A T Commands N n  Error Control Mode Determines the type of error control used by the modem. In most cases, V42/MNPorBfr is the best choice. If V .42bis and MNP are enabled, then the modem uses the following priority for error control ne[...]

4. A T Command Set and S-Registers 4-27 3830-A2-GB91-30 August 1998 T able 4-2 (21 of 23) Model 3830 A T Commands Tn  No Data Disconnect Timer Forces the modem to disconnect if no data is transmitted or received within a specified amount of time. T0 Disable. Tn Where n is a value from 1 to 255 in 1-minute increments. Xn  XON/XOFF Passth[...]

COMSPHERE 3800 Series Modems – Model 3830 4-28 August 1998 3830-A2-GB91-30 T able 4-2 (22 of 23) Model 3830 A T Commands %Bn  Modulation and Data Rate Sets the modulation and maximum VF rate. The %B300 and %B1200 commands work in conjunction with the B (ITU-T/ Bell Mode) command to determine modulation. %B19200 V .32 terbo , maximum rate 19,20[...]

4. A T Command Set and S-Registers 4-29 3830-A2-GB91-30 August 1998 T able 4-2 (23 of 23) Model 3830 A T Commands %Cn  MNP5 Data Compression Determines if the modem uses MNP Class 5 data compression. It can be set independently of V .42bis data compression. Online changes do not take effect until a disconnect occurs. %C0 Disable. %C1 Enable. %Rn[...]

COMSPHERE 3800 Series Modems – Model 3830 4-30 August 1998 3830-A2-GB91-30 S-Register List S-Registers af fect the operating parameters of the Model 3830 modem. These registers are applicable only when the DTE Dialer T ype configuration option is set for A T . (See &Mn and &Qn commands.) S-Registers can be displayed and/or modified when t[...]

4. A T Command Set and S-Registers 4-31 3830-A2-GB91-30 August 1998 T able 4-3 (2 of 20) Model 3830 S-Registers S2  A T Escape Character Determines ASCII value used for escape sequence to enter Command mode from Data mode. Enter a value from 0 to 127 for the escape character . Any value greater than 127 causes the modem to disable the escape seq[...]

COMSPHERE 3800 Series Modems – Model 3830 4-32 August 1998 3830-A2-GB91-30 T able 4-3 (3 of 20) Model 3830 S-Registers S6  Blind Dial Pause Determines how long (in seconds) the modem waits after going off-hook before dialing a telephone number if using result code X0, X1, or X3. Enter a value from 2–255 seconds. Factory setting is 2 seconds.[...]

4. A T Command Set and S-Registers 4-33 3830-A2-GB91-30 August 1998 T able 4-3 (4 of 20) Model 3830 S-Registers S18  T est Timeout Sets the duration (in seconds) for the modem tests. This automatically cancels any test in progress after the time of this register expires. Any test can be manually canceled by issuing the escape sequence (+++) foll[...]

COMSPHERE 3800 Series Modems – Model 3830 4-34 August 1998 3830-A2-GB91-30 T able 4-3 (5 of 20) Model 3830 S-Registers S35  Auto Redial (Leased Line) Auto Redial allows repeated automatic dial backup attempts by specifying the range of Directory Locations that can be tried. A redial attempt is made in response to a bad phone number , a busy si[...]

4. A T Command Set and S-Registers 4-35 3830-A2-GB91-30 August 1998 T able 4-3 (6 of 20) Model 3830 S-Registers S37  Auto Redial Works in conjunction with the Bad Lines Auto Originate and Rate Auto Originate options. It allows repeated automatic dial backup attempts by specifying the range of Directory Locations that can be tried. The modem must[...]

COMSPHERE 3800 Series Modems – Model 3830 4-36 August 1998 3830-A2-GB91-30 T able 4-3 (7 of 20) Model 3830 S-Registers S39  Receive Buffer Disconnect Delay Determines the maximum amount of time the modem can continue to send data in its Receive Buffer to the DTE after the modem is commanded by the DTE to disconnect, or after the modem detects [...]

4. A T Command Set and S-Registers 4-37 3830-A2-GB91-30 August 1998 T able 4-3 (8 of 20) Model 3830 S-Registers S43  V .32bis T rain Register controls the modem’s train time for V .32bis/V .32 mode. Register has the following values: 0 = Long (A long train is required for satellite links which have long roundtrip delays.) 1 = Short Factory set[...]

COMSPHERE 3800 Series Modems – Model 3830 4-38 August 1998 3830-A2-GB91-30 T able 4-3 (9 of 20) Model 3830 S-Registers S46  Bad Lines Auto Originate Register determines if the modem performs an automatic dial backup if the leased lines fail. Register has the following values: 0 = Disable 1 = 30 seconds 2 = 20 seconds 3 = 60 seconds 4 = 90 seco[...]

4. A T Command Set and S-Registers 4-39 3830-A2-GB91-30 August 1998 T able 4-3 (10 of 20) Model 3830 S-Registers S48  Leased Line Carrier On Level Determines if the modem disconnects if the carrier signal on leased lines falls below –26 dBm or –43 dBm. Register has the following values: 0 = –43 dBm 1 = –26 dBm Factory setting is –43 dB[...]

COMSPHERE 3800 Series Modems – Model 3830 4-40 August 1998 3830-A2-GB91-30 T able 4-3 (1 1 of 20) Model 3830 S-Registers S52  DTE Local Loopback (CT141) 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 Factory setting is Disable. S53 ?[...]

4. A T Command Set and S-Registers 4-41 3830-A2-GB91-30 August 1998 T able 4-3 (12 of 20) Model 3830 S-Registers S57  Remote Access Password Register allows entry of the second of digits of a remote access password. Any value from 00 to 99 is valid. For example, if the remote access password is 12345678, then S57=34. S58  Remote Access Passwo[...]

COMSPHERE 3800 Series Modems – Model 3830 4-42 August 1998 3830-A2-GB91-30 T able 4-3 (13 of 20) Model 3830 S-Registers S62  V .25bis Coding Identifies to the modem the type of coding used by the DTE while in V .25bis mode. Register has the following values: 0 = ASCII 1 = EBCDIC Factory setting is ASCII. S63  V .25bis Idle Character Identif[...]

4. A T Command Set and S-Registers 4-43 3830-A2-GB91-30 August 1998 T able 4-3 (14 of 20) Model 3830 S-Registers S65  Line Current Disconnect Determines if the modem disconnects if an interruption in loop current greater than 8 milliseconds or 90 milliseconds occurs. Register has the following values: 0 = Enable (8 msec) 1 = Enable (90 msec) 2 =[...]

COMSPHERE 3800 Series Modems – Model 3830 4-44 August 1998 3830-A2-GB91-30 T able 4-3 (15 of 20) Model 3830 S-Registers S69  Make Busy Via DTR Determines if the modem goes off-hook (busy) when DTR is Of f. Register has the following values: 0 = Disable 1 = Enable Factory setting is Disable. S74  Network Position Identification Register iden[...]

4. A T Command Set and S-Registers 4-45 3830-A2-GB91-30 August 1998 T able 4-3 (16 of 20) Model 3830 S-Registers S77  DTR Alarm Reporting Register determines whether an alarm is sent to the 6800 Series Network Management System controller when the DTR signal has been Off for more than 10 seconds. Register has the following values: 0 = Disable 1 [...]

COMSPHERE 3800 Series Modems – Model 3830 4-46 August 1998 3830-A2-GB91-30 T able 4-3 (17 of 20) Model 3830 S-Registers S80  No Data Disconnect T rigger Signal Register determines whether Pin 2 (transmit data) or Pin 3 (receive data) of the modem’s EIA-232 serial interface is monitored so that the modem can disconnect the call if there is no[...]

4. A T Command Set and S-Registers 4-47 3830-A2-GB91-30 August 1998 T able 4-3 (18 of 20) Model 3830 S-Registers S84  A T Command Mode Determines how the modem responds to valid and invalid A T commands. The selections No ERROR and No Strap or ERROR permit installation into applications that are customized for a different modem. Register has the[...]

COMSPHERE 3800 Series Modems – Model 3830 4-48 August 1998 3830-A2-GB91-30 T able 4-3 (19 of 20) Model 3830 S-Registers S89  V .42 ARQ Window Size Increase Register allows the V .42 Automatic Request for Transmission (ARQ) window size to be set to a value from 6 to 15 frames to accommodate satellite delays. Register has the following values: 0[...]

4. A T Command Set and S-Registers 4-49 3830-A2-GB91-30 August 1998 T able 4-3 (20 of 20) Model 3830 S-Registers S91  Cellular Enhancements V alid only if Enhanced Throughput Cellular (ETC) is installed. Register determines whether parameters are set to improve performance over a cellular link. Should be enabled when the remote modem is using a [...]

COMSPHERE 3800 Series Modems – Model 3830 4-50 August 1998 3830-A2-GB91-30[...]

A-1 3830-A2-GB91-30 August 1998 T roubleshooting Overview A-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview This appendix points out basic problems that can occur when operating a 3830 modem. Use T ables A-1 through A-5 to check out these problems. If you are having data communica[...]

COMSPHERE 3800 Series Modems – Model 3830 A-2 August 1998 3830-A2-GB91-30 T able A-1 Modem Health Symptom Action Modem did not pass power-up self-test Contact your customer service representative. Power LED does not light Make sure the modem’s ON/Of f switch is in the ON position. g Make sure the ac power transformer is connected to the ac powe[...]

A. T r oubleshooting A-3 3830-A2-GB91-30 August 1998 T able A-2 Modem – DTE Connection Symptom Action 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 EIA-232 cable. If the cable is bad, replace it. (Null modem cables, also known as crossover cables, do not work i[...]

COMSPHERE 3800 Series Modems – Model 3830 A-4 August 1998 3830-A2-GB91-30 T able A-3 (1 of 4) Modem – VF Connection Symptom Action Modem does not receive a dial tone Attach the telephone directly to the wall outlet to verify that a dial tone exists. Make sure the VF line is connected to the modem’s rear jack labeled Dial. Modem does not go of[...]

A. T r oubleshooting A-5 3830-A2-GB91-30 August 1998 T able A-3 (2 of 4) Modem – VF Connection Symptom Action Modem goes off-hook, answers, but does not connect (continued) V erify that originating modem supports your modem’s modulation schemes. The 3830 modem recognizes V .32 terbo, CCITT V .32bis, V .32, V .22bis, V .22, V .21, Bell 212A, and[...]

COMSPHERE 3800 Series Modems – Model 3830 A-6 August 1998 3830-A2-GB91-30 T able A-3 (3 of 4) Modem – VF Connection Symptom Action Modem does not go off-hook and begin dialing (continued) If using V .25bis HDLC, verify that the correct character format uses flag, address, and control characters before the text block and a frame sequence check a[...]

A. T r oubleshooting A-7 3830-A2-GB91-30 August 1998 T able A-3 (4 of 4) Modem – VF Connection Symptom Action Modem establishes and disconnects a call (continued) The remote modem may be in a forced Error Control mode (disconnect if there is no error control). Reconfigure your modem to V .42/MNP or Buffer and try again. Perform a Local Analog Loo[...]

COMSPHERE 3800 Series Modems – Model 3830 A-8 August 1998 3830-A2-GB91-30 T able A-5 Leased-Line Operation Symptom Action Modems do not train-up on leased lines V erify that the correct cabling is used for your application. Refer to Chapter 2 for modem installation instructions. V erify that one modem is configured for Answer mode and the other i[...]

B-1 3830-A2-GB91-30 August 1998 T echnical Specifications T echnical Specifications B-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T echnical Specifications T able B-1 shows the technical specifications for the Model 3830 modem. T able B-1 (1 of 4) Model 3830 T echnical Specifications Specifications Descriptio[...]

COMSPHERE 3800 Series Modems – Model 3830 B-2 August 1998 3830-A2-GB91-30 T able B-1 (2 of 4) Model 3830 T echnical Specifications Specifications Description COMP A TIBILITY DIAL-LINE MODULA TIONS V .32 terbo (19,200, 16,800 bps) ITU-T V .32bis (14,400, 12,000, 9600, 7200, 4800 bps) ITU-T V .32 (9600, 4800 bps) ITU-T V .22bis (2400 bps) ITU-T V .[...]

B. T echnical Specifications B-3 3830-A2-GB91-30 August 1998 T able B-1 (3 of 4) Model 3830 T echnical Specifications Specifications Description POWER CONSUMPTION 5.25 watts (typical, including power transformer , speaker of f) DIMENSIONS Weight Height Width Depth 2.5 pounds (1.14 kg) (not including power transformer) 2.1 inches (5.4 cm) 7.6 inches[...]

COMSPHERE 3800 Series Modems – Model 3830 B-4 August 1998 3830-A2-GB91-30 T able B-1 (4 of 4) Model 3830 T echnical Specifications Specifications Description DA T A RA TES Dial Line Leased Line Fax DTE 19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, 2400, 1200, or 300–0 bps. 19,200, 16,800, 14,400, 12,000, 9600, 7200, or 4800 bps 14,400, 12,0[...]

C-1 3830-A2-GB91-30 August 1998 Pin Assignments EIA-232-D Pin Assignments C-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VF Connector Pin Assignments C-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EIA-232-D Pin Assignments T able C-1 lists the EIA-232-D pin assignments for the modem. T abl[...]

COMSPHERE 3800 Series Modems – Model 3830 C-2 August 1998 3830-A2-GB91-30 T able C-1 (2 of 3) EIA-232-D Pin Assignments RS-232 Pin Circuit Function Signal Source CCITT EIA Circuit Name 9 +10V – – – Reserved for test purposes (may be used to drive one RS-232 load) 10 –10V – – – Reserved for test purposes (may be used to drive one RS-[...]

C. Pin Assignments C-3 3830-A2-GB91-30 August 1998 T able C-1 (3 of 3) EIA-232-D Pin Assignments RS-232 Pin Circuit Function Signal Source CCITT EIA Circuit Name 22 R1 CE 125 DCE Ring Indicator 23 CT1 1 1 CH 111 DTE Data Rate Selector 24 XTXC DA 11 3 DTE External Clock 25 TEST TM 142 DCE T est Mode VF Connector Pin Assignments For 2-wire leased-lin[...]

COMSPHERE 3800 Series Modems – Model 3830 C-4 August 1998 3830-A2-GB91-30 The Model 3830 provides the 2-wire leased-line signals on the same leads used for T ip and Ring when in Dial mode. T o connect the modem to a standard JM8 leased-line jack, a conversion cable (125-0054-1531) must be used. Note that for 2-wire leased-line operation, the yell[...]

C. Pin Assignments C-5 3830-A2-GB91-30 August 1998 T able C-2 illustrates the connector pin assignments for Model 3830 modular jacks as well as the pin assignments for the leased-line jacks. T able C-2 VF Connector Pin Assignments for Leased Lines Connector Model 3830 Model 3830 T ype Of Leased-Line Jack Connector Pin No. 6-pin/8-pin Model 3830 Pho[...]

COMSPHERE 3800 Series Modems – Model 3830 C-6 August 1998 3830-A2-GB91-30[...]

D-1 3830-A2-GB91-30 August 1998 ITU-T V .25bis Dialing Commands and Response Overview D-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request Commands D-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Call Request with Number Provided (CRN) D-3 . [...]

COMSPHERE 3800 Series Modems – Model 3830 D-2 August 1998 3830-A2-GB91-30 The following section discusses those V .25bis commands supported by the Model 3830 modem and the responses to those commands. T ables D-1 and D-2 in the Command Response section list the V .25bis command and response and the analogous A T command. NOTE The Model 3830 modem[...]

D. CCITT V .25 bis Dialing Commands and Response D-3 3830-A2-GB91-30 August 1998 Call Request with Number Provided (CRN) The CRN command dials the telephone number entered from the DTE. CRN is similar to the A TD command. The CRN command format is: CRNn Where: n is the dial string. The following characters are permitted: T DTMF Dialing P Pulse Dial[...]

COMSPHERE 3800 Series Modems – Model 3830 D-4 August 1998 3830-A2-GB91-30 Call Failure Indication (CFI) The CFI response is issued to the DTE if the modem fails a CRN or CRS command. CFI is similar to the A T result codes BUSY , NO ANSWER, NO CARRIER, NO DIAL TONE, and ERROR. The CFI response format is: CFIxx Where: xx is ET Engaged tone NS Numbe[...]

D. CCITT V .25 bis Dialing Commands and Response D-5 3830-A2-GB91-30 August 1998 Call Answer Commands Call Answer commands disable or enable the modem’ s AutoAnswer function. These commands are issued from the DTE. Call Answer commands include Incoming Call (INC), Disregard Incoming Call (DIC) and Connect Incoming Call (CIC). Incoming Call (INC) [...]

COMSPHERE 3800 Series Modems – Model 3830 D-6 August 1998 3830-A2-GB91-30 Program Normal (PRN) The Program Normal (PRN) command allows the DTE to enter and store a telephone number to a specific directory location. PRN is similar to the A T&Z command. The PRN command format is: PRN x;n Where: x is the directory location 1–10; n is the telep[...]

D. CCITT V .25 bis Dialing Commands and Response D-7 3830-A2-GB91-30 August 1998 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[...]

COMSPHERE 3800 Series Modems – Model 3830 D-8 August 1998 3830-A2-GB91-30 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 Inco[...]

D. CCITT V .25 bis Dialing Commands and Response D-9 3830-A2-GB91-30 August 1998 T able D-2 lists V .25bis response messages supported by the Model 3830 modem. 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 TONE, ER[...]

COMSPHERE 3800 Series Modems – Model 3830 D-10 August 1998 3830-A2-GB91-30[...]

Glossary-1 3830-A2-GB91-30 August 1998 Glossary Active (Operating) A configuration area containing configuration options currently in use by the modem. When a power cycle occurs, a reset is performed, or a save is issued, this area is updated with the contents of Active (Saved). Active (Saved) A nonvolatile configuration area containing the most re[...]

COMSPHERE 3800 Series Modems – Model 3830 Glossary-2 August 1998 3830-A2-GB91-30 asynchr onous transmission A data transmission that is synchronized by a transmission start bit at the beginning of a character (five to eight bits) and one or more stop bits at the end. A T command set A group of commands, issued from an asynchronous DTE, that allow[...]

Glossary Glossary-3 3830-A2-GB91-30 August 1998 buffer A storage device used to compensate for differences in the data flow rate when transmitting data from one device to another . byte A sequence of successive bits (usually eight) handled as a unit in data transmission. character A letter , figure, number , punctuation, or other symbols. character[...]

COMSPHERE 3800 Series Modems – Model 3830 Glossary-4 August 1998 3830-A2-GB91-30 Customer 1 A user-defined configuration area containing customized configuration options for a specific application. Customer 2 A user-defined configuration area containing customized configuration options for a specific application. data carrier A continuous frequen[...]

Glossary Glossary-5 3830-A2-GB91-30 August 1998 dial line A communications circuit that is established by a switched circuit connection in the dial network. dial network See PSTN. dial string A series of characters that consists of numbers and modifiers used to dial a telephone number . digital signal A signal composed of only two discrete values, [...]

COMSPHERE 3800 Series Modems – Model 3830 Glossary-6 August 1998 3830-A2-GB91-30 error contr ol An algorithm used to correct data transmission errors. escape sequence Default setting is +++. This sequence lets you switch your modem from Data mode to Command mode. extended result codes An asynchronous message (in either numbers or words) that incl[...]

Glossary Glossary-7 3830-A2-GB91-30 August 1998 Hz A unit of frequency (hertz) that equals one cycle per second. ITU-T The T elecommunications Standardization Sector of the International T elecommunications Union, an advisory committee established by the United Nations to recommend communications standards and policies. Before March 1993 it was cal[...]

COMSPHERE 3800 Series Modems – Model 3830 Glossary-8 August 1998 3830-A2-GB91-30 ITU-T V .42 ITU-T standard for error control protocol. ITU-T V .42 bis ITU-T standard for data compression. ITU-T V .54 ITU-T standard for local and remote diagnostic loopback tests. JM8 A jack used for leased-line networks. Pins 1 and 2 are the transmit pair and Pin[...]

Glossary Glossary-9 3830-A2-GB91-30 August 1998 modulation The process of varying some characteristics (usually amplitude, frequency , and/or phase) of a carrier wave to form data transmissions. off-hook A telephone or modem is being used. on-hook A telephone or modem is not being used. Originate mode The modem is in a state where it is ready to tr[...]

COMSPHERE 3800 Series Modems – Model 3830 Glossary-10 August 1998 3830-A2-GB91-30 PSTN Public Switched T elephone Network. A network shared among many users who can use telephones to establish connections between two points. Also known as dial network. pulse dialing One of two dialing methods, in which telephone numbers are sent as pulses (brief [...]

Glossary Glossary-1 1 3830-A2-GB91-30 August 1998 tone dialing One of two dialing methods, in which telephone numbers are sent as tones across the telephone lines. training A process where two modems try to establish a connection over the VF line. UL Underwriter ’ s Laboratories, Inc. UNIX Dial A factory preset configuration area containing the c[...]

COMSPHERE 3800 Series Modems – Model 3830 Glossary-12 August 1998 3830-A2-GB91-30[...]

Index-1 3830-A2-GB91-30 August 1998 Index  ! (hook flash), 4Ć9 ," dial modifier (P ause), 4Ć8 ," P ause Time (S8), 4Ć32 ;" (return to command mode), 4Ć9 @ (quiet answer), 4Ć9  1800 Hz T raining T one (S34), [...]

COMSPHERE 3800 Series Modems – Model 3830 Index-2 August 1998 3830-A2-GB91-30 &Q (Async/Sync Mode and DTE Dialer T ype), 4Ć18 &R (R TS Action), 4Ć19 &S (DSR Control), 4Ć20 &T (T ests), 4Ć21 &V (V iew Configuration Options), 4Ć22 &W (W rite to Memory),?[...]

Index Index-3 3830-A2-GB91-30 August 1998 A uto Dial Standby (S47), 4Ć38 A uto Originate, 4Ć38 A uto R edial (L eased Line), 4Ć34 A uto R edial (S37), 4Ć35 autoĆanswer problems, A Ć4 automatic redialing, 4Ć35 automode (S78), 4Ć45 autorate S76 Dial Line, 4Ć44 S82 Leased[...]

COMSPHERE 3800 Series Modems – Model 3830 Index-4 August 1998 3830-A2-GB91-30 character format, 4Ć3 problems, A Ć3, AĆ7 clock source (A T&X), 4Ć22 command echo, 4Ć9, A Ć3 Command mode, 4Ć1 Command R esponse (V .25bis), D Ć7 compression MNP5, 4Ć29 V .42bis, 4Ć29 COMSPHERE 6700 [...]

Index Index-5 3830-A2-GB91-30 August 1998 dialing problems, A Ć5 Directory Location 1 Callback (S67), 4Ć43 Disconnect Delay R eceive Buffer, 4Ć36 T ransmit Buffer, 4Ć39 display configuration options, 4Ć22 SĆR egister, 4Ć11 DSR Control (A T&S), 4Ć20 DTE connection, 2Ć4 DTE R[...]

COMSPHERE 3800 Series Modems – Model 3830 Index-6 August 1998 3830-A2-GB91-30 Escape Guard Time, 4Ć2, 4Ć32 escape sequence (+++), 4Ć1, 4Ć2, 4Ć31 ETC (Enhanced Throughput Cellular), 4Ć49 extended result codes (A TX), 4Ć12  F ast Disconnect, 4Ć47 fax Class 2, 3Ć1 EIA/TIA Ć5[...]

Index Index-7 3830-A2-GB91-30 August 1998  Identification (A TI), 4Ć10 initialization strings, 2Ć11 D A T AKIT , 2Ć12 synchronous leasedĆline applications, 2Ć12 V .25bis applications, 2Ć11 installation Model 3830 modem, 2Ć2 software, 2Ć6 ITU-T/Bell Mode (B), 4Ć7  Leased Line Ca[...]

COMSPHERE 3800 Series Modems – Model 3830 Index-8 August 1998 3830-A2-GB91-30 SĆR egisters, 4Ć30 Modulation and Data Rate (%B), 4Ć28 modulation problems, A Ć5 modulations supported, B Ć2  Network Management Address (S75), 4Ć44 Network P osition Identification (S74), 4Ć44 NMS (COMS[...]

Index Index-9 3830-A2-GB91-30 August 1998  R (R everse dial), 4Ć9 Rate A uto Originate (S36), 4Ć34 Rate Control (CT111), 4Ć41 recovering use of A T commands, 2Ć9 redialing, automatic, 4Ć35 remote access (S55), 4Ć40 R emote Access P assword (S56-S59), 4Ć40, 4Ć41 R [...]

COMSPHERE 3800 Series Modems – Model 3830 Index-10 August 1998 3830-A2-GB91-30 S34 (1800 Hz T raining T one), 4Ć33 S35 (A uto Redial, Leased Line), 4Ć34 S36 (Rate A uto Originate), 4Ć34 S37 (A uto Redial), 4Ć35 S38 (DTR Cont R epeat), 4Ć35 S39 (R eceive Buffer Disconnect[...]

Index Index-1 1 3830-A2-GB91-30 August 1998 S88 (Straps When Disconnected), 4Ć47 S89 (V .42 ARQ Window Size Increase), 4Ć48 S90 (DTE Rate = VF R ate), 4Ć48 S91 (Cellular Enhancements), 4Ć49 S92 (V .29 T rain On Data), 4Ć49 selfĆtest A T&T9, 4Ć21 failure, A Ć2 [...]

COMSPHERE 3800 Series Modems – Model 3830 Index-12 August 1998 3830-A2-GB91-30  V .25bis applications, 2Ć11 V .25bis Coding (S62), 4Ć42 V .25bis dialing, 4Ć18 V .25bis dialing comands, D Ć1 V .25bis Idle Character (S63), 4Ć42 V .25bis New Line Character, 4Ć42 V .29 T rain On [...]