Motorola V.3400 User manual

V.3400
User’s Guide
Motorola
5000 Bradford Drive
Huntsville, AL 35805-1993
Doc No. 6 209 5400 02 014
November 1996
© 1996 Motorola

ii
COPYRIGHT
Copyright 1994, 1996 Motorola Inc.
Published by Motorola, who reserves the right to make improvements in the products
described in this manual as well as to revise this publication at any time and without notice to
any person ofsuch revision or change.
All rights reserved. No part of this publication may be reproduced, transcribed, stored in an
electronic retrieval system, translated into any language or computer language, or be trans-
mitted in any form whatsoever without the prior written consent of the publisher. For addi-
tional information contact:
Motorola
5000 Bradford Drive
Huntsville, Alabama 35805-1993
TRADEMARKS
34 is a registered trademark of Motorola, Inc.
All brand and product names are trademarks or registered trademarks of their respective holders.
NOTICE
All titles, versions, trademarks, claims of compatibility, etc., of hardware and software prod-
ucts mentioned herein are the sole property and responsibility of the respective vendors.
Motorola makes no endorsement of any particular product for any purpose, nor claims
responsibility for its operation and accuracy.
UPDATES
Updates to the products and the manual can be obtained at participating Motorola dealers and
distributors, or directly from Motorola.

iii
FCC REQUIREMENTS
This equipment complies with FCC rules Part 68. Located on the equipment is the FCC
Registration Number and Ringer Equivalence Number (REN). You must provide this infor-
mation to the telephone company if requested.
The Registration Number and REN will be inscribed on the printed circuit board on insert
cards or on a label attached to either the chassis bottom or metal end-plate on standalone or
rack models. In any case the FCC requires these numbers be prominently displayed on an
outside surface of the equipment.
The REN is used to determine the number of devices you may legally connect to your tele-
phone line. In most areas, the sum of the REN of all devices connected to one line must not
exceed five (5.0). You should contact your telephone company to determine the maximum
REN for your calling area.
A variety of Universal Service Ordering Code telephone wall jacks are available for different
types of devices or services. Please note that the USOC jack required for this unit is RJ11.
The telephone company may change technical operations or procedures affecting your equip-
ment. You will be notified of changes in advance to give you ample time to maintain uninter-
rupted telephone service.
If you experience trouble with this telephone equipment, please contact
Motorola
5000 Bradford Drive
Huntsville, Alabama 35805-1993
for information on obtaining service or repairs. The telephone company may ask that you
disconnect this equipment from the network until the problem has been resolved. If your
equipment continues to disrupt the network the telephone company may temporarily discon-
nect service. If this occurs you will be informed of your right to file a complaint with the
FCC.
This equipmentmay not be used on coin serviceprovided by the telephone company.
Connection to party lines is subject to state tariffs.
An FCC compliant telephone cord and modular plug are provided with this equipment, which
is designed to connect to the telephone network or premises wiring using a compatible
modular jack that is Part 68 complaint. See installation instructions for details.
WARNING
This equipment uses, generates, and can radiate radio frequency energy inter-
fering with radio communications if not installed and used according to the
instruction manual. It has been tested and complies with the limits for a Class A
computing device according to FCC Rules, Part 15. Operation of this equipment
in a residential area may cause interference. If it does, you must correct the cause
of the interference.
Changes or modifications to this unit not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
SHIELDED CABLES
This product has been tested and complies with FCC limits for a Class A computing device.
Testing was done with shielded computer cables. Using unshielded cables could cause your
system to emit excessradio frequency, increasing the chance of interference. To complywith
FCC regulations it is necessary to use shielded computer cables with your installation.

iv
SPECIAL REQUIREMENTS FOR CANADA
Certain requirements exist fordata communication products manufactured for use in Canada.
Principle among these requirements is the application of the IC label as described below.
However, certain data communication products do not require the IC label nor adherence to
IC requirements. If this is the case the IC label will not be affixed to the units.
INDUSTRY CANADA (IC) REQUIREMENTS
IC labels are affixed to each unit sold in Canada. This label has the certification number for
that particular unit. The numbers are different for each model.
The Industry Canada label identifies certified equipment. This certification means that the
equipment meets certain telecommunications network protective, operational, and safety
requirements. IC does not guarantee the equipment will operate to the user's satisfaction.
Before installing this equipment, users should ensure that it is permissible to be connected to
the facilities of the local telecommunications company. The equipment must also be installed
using an acceptable method of connection. In some cases, the company's inside wiring asso-
ciated with a single line individual service may be extended by means of a certified connector
assembly (telephone extension cord). The customer should be aware that compliance with
the above conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian maintenance
facility designated by the supplier. Any repairs or alterations made by the user to this equip-
ment, or equipment malfunctions, may give the telecommunications company cause to
request the user to disconnect the equipment. For their own protection users should ensure
that the electrical ground connections of the power utility, telephone lines and internal
metallic water pipe system, if present, are connected together. This precaution may be partic-
ularly important in rural areas. CAUTION
Users should not attempt to make installation connections themselves, but should
contact the appropriate electric inspection authority or electrician.
LOAD NUMBER
The Load Number (LN) assigned to each terminal device denotes the percentage of the total
load tobe connected to atelephone loop which is usedby the device, to prevent overloading.
The 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 the devices does not exceed 100.
CANADIAN EMISSION REQUIREMENTS
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.

V.3400 v
Table of Contents
V.3400
Chapter 1 Introduction
GENERAL ................................................................................ 1-1
FEATURES ............................................................................... 1-1
Data Mode............................................................................... 1-1
Fax Mode ............................................................................... 1-3
COMMUNICATIONS SOFTWARE ........................................ 1-3
DESCRIPTION ......................................................................... 1-3
Functional .............................................................................. 1-3
Physical .................................................................................. 1-4
Chapter 2 Installation
GENERAL ................................................................................ 2-1
ELECTRICAL INSTALLATION ............................................. 2-1
AC Power Connection ........................................................... 2-1
DC Power Connection ........................................................... 2-1
DTE CONNECTION ................................................................ 2-2
TELEPHONE LINE CONNECTION ...................................... 2-5
PSTN Connection .................................................................. 2-5
Permissive ........................................................................... 2-7
Programmable ..................................................................... 2-7
Leased Line Connection ........................................................ 2-7
Chapter 3 Getting Started
OPTION SELECTION ............................................................. 3-1
POWERUP ............................................................................... 3-1
PLACING A CALL .................................................................. 3-2
Using a Standard Telephone .................................................. 3-2
Autodial from Front Panel ..................................................... 3-2
Autodial from a Terminal with the AT Command Set ........... 3-2
ANSWERING A CALL ........................................................... 3-3
Autoanswer ............................................................................ 3-3
Manual Answer ...................................................................... 3-3
Answer from Terminal with AT Command Set ..................... 3-3
ENDING A CALL .................................................................... 3-3
Call Termination from Front Panel ........................................ 3-3

Table of Contents
vi V.3400
Call Termination from Terminal with AT Command Set ....... 3-3
Reasons for Call Termination ................................................. 3-3
Chapter 4 Front Panel Operation
GENERAL ................................................................................ 4-1
LED DESCRIPTIONS .............................................................. 4-1
LCD MENUS ............................................................................ 4-2
LCD MENU OPERATION ....................................................... 4-2
FRONT PANEL SECURITY .................................................... 4-11
Chapter 5 AT Commands
GENERAL ................................................................................ 5-1
COMMAND CATEGORIES .................................................... 5-1
OPERATION MODES .............................................................. 5-1
Offline Command Mode ......................................................... 5-2
Online Command Mode ......................................................... 5-2
Data Mode .............................................................................. 5-2
SENDING COMMANDS TO THE MODEM .......................... 5-2
Creating a Command Statement ............................................. 5-3
Autobaud ................................................................................ 5-3
Guidelines for Creating Command Statements ...................... 5-4
Monitor Display ...................................................................... 5-4
Command Statement Buffer ................................................... 5-4
Backspace Key ....................................................................... 5-5
Repeating a Command............................................................. 5-5
Numbered Commands............................................................. 5-5
Group Commands ................................................................... 5-5
RESPONSE COMMANDS ....................................................... 5-6
Digit / Word Selection ............................................................ 5-6
Response Displays ................................................................ 5-7
Negotiation Displays ............................................................ 5-7
Protocol Result Codes .......................................................... 5-7
Call Progress / Connect Speed Messages ............................... 5-7
Number Code Application .................................................... 5-9
Response Number Codes / Messages ..................................... 5-10
DIAL COMMANDS ................................................................. 5-13
Dialing .................................................................................... 5-13
Tone Dialing ........................................................................... 5-14

Table of Contents
V.3400 vii
Pulse Dialing .......................................................................... 5-14
Insert Long Pause ................................................................... 5-14
Wait for Second Dial Tone ..................................................... 5-15
Hook Flash ............................................................................. 5-15
Switching to Answer Mode after Dialing .............................. 5-15
Remaining in Command Mode............................................... 5-15
Wait for 5 Seconds of Silence................................................. 5-16
Dialing a Stored Telephone Number....................................... 5-16
Autodial Number Location ..................................................... 5-16
Voice Calls ............................................................................. 5-16
Switching from Voice to Data ................................................ 5-17
ANSWERING A CALL ........................................................... 5-17
Manual Answer ...................................................................... 5-17
AT Command Answer ............................................................ 5-17
Autoanswer ............................................................................ 5-17
TERMINAL INTERFACE COMMANDS .............................. 5-18
Data Carrier Detect ................................................................ 5-18
Data Set Ready ....................................................................... 5-19
Data Terminal Ready ............................................................. 5-19
Serial Port Ring Indicator (Pin 22) ........................................ 5-20
Request to Send / Clear to Send ............................................. 5-20
DTE Controlled Fallback Rate (Pin 23) ................................. 5-21
GENERAL COMMANDS ....................................................... 5-21
Changing from Data Mode to Command Mode .................... 5-21
Local Character Echo ............................................................. 5-21
Online Character Echo ........................................................... 5-22
Hanging Up ............................................................................ 5-22
Fast Disconnect ...................................................................... 5-22
EPROM Check ....................................................................... 5-23
Speaker Volume ..................................................................... 5-23
Speaker Control ...................................................................... 5-23
Return Online.......................................................................... 5-24
Long Space Disconnect........................................................... 5-24
V.22 bis Guard Tones ............................................................. 5-24
Asynchronous / Synchronous Mode Selection ...................... 5-25
Make / Break Dial Pulse Ratio ............................................... 5-26
Synchronous Transmit Clock Source ..................................... 5-26

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viii V.3400
V.34 Rate Selection Thresholds .............................................. 5-26
V.34 Asymmetric Bit Rates .................................................... 5-27
Modulation .............................................................................. 5-27
Maximum DCE Speed ............................................................ 5-28
Minimum DCE Speed ............................................................ 5-29
Auto Retrain ........................................................................... 5-29
Automatic Rate Adaption ........................................................ 5-30
Manual Rate Adaption ............................................................ 5-31
Product Revision Level .......................................................... 5-31
Online Quick Reference ......................................................... 5-31
Product Serial Number ........................................................... 5-31
Permissive / Programmable .................................................... 5-32
Talk / Data .............................................................................. 5-32
V.32 Fast Train ........................................................................ 5-32
Incoming Call ......................................................................... 5-32
Line Current Disconnect ......................................................... 5-33
Disable AT Command Set ...................................................... 5-33
Dial Line Transmit Level ........................................................ 5-33
PRIVATE LINE OPERATION .................................................. 5-34
4-Wire Operation .................................................................... 5-34
2-Wire Operation .................................................................... 5-34
2-wire Leased Line Operation ............................................. 5-34
2-wire Dial-up Operation ..................................................... 5-35
Dial Backup ............................................................................ 5-35
Dial / Leased Line ................................................................... 5-36
Dial Backup ............................................................................ 5-37
Return toLeased Line from Dial Backup................................ 5-37
Manual Dial Backup................................................................ 5-37
Answer / Originate .................................................................. 5-37
Leased Line Transmit Level ................................................... 5-37
CONFIGURATION COMMANDS .......................................... 5-38
CONFIGURATION PROFILES ............................................... 5-38
Active Profile .......................................................................... 5-38
Stored Profile .......................................................................... 5-38
Factory Profile ........................................................................ 5-38
Storing a Configuration .......................................................... 5-39
Powerup Option Set ................................................................ 5-40

Table of Contents
V.3400 ix
Load Factory Options ............................................................ 5-40
Reset to Stored Configuration ................................................ 5-41
View Configuration Profiles / Received Signal Options ....... 5-41
Storing a Telephone Command Line ..................................... 5-41
Retaining / Restoring Options ................................................ 5-42
REMOTE CONFIGURATION ................................................. 5-43
Remote Configuration Security ............................................. 5-43
Remote Security Code ........................................................... 5-43
Entering Remote Configuration.............................................. 5-44
Chapter 6 Protocols
CCITT V.42 BIS ERROR CONTROL PROTOCOL ............... 6-1
RELIABLE ............................................................................... 6-1
AUTO-RELIABLE ................................................................... 6-1
CONSTANT SPEED INTERFACE ......................................... 6-2
DATA COMPRESSION ........................................................... 6-2
NORMAL MODE .................................................................... 6-2
DIRECT MODE ....................................................................... 6-2
FLOW CONTROL ................................................................... 6-3
PROTOCOL COMMANDS ..................................................... 6-3
Disconnect Buffer Delay ........................................................ 6-4
Serial Port (DTE) Constant Speed ......................................... 6-4
V.42 Optional Detection Phase .............................................. 6-4
Operating Mode ..................................................................... 6-5
Auto-Reliable Fallback Character .......................................... 6-5
Serial Port Flow Control ........................................................ 6-6
XON/XOFF Pass Through .................................................... 6-7
Data Link Flow Control ......................................................... 6-8
Break Control ......................................................................... 6-8
Inactivity Timer ...................................................................... 6-10
Maximum Reliable Block Size .............................................. 6-10
Transmit Break / Set Break Length ...................................... 6-11
Set Auto-Reliable Buffer ..................................................... 6-11
V.42bis Data Compression ..................................................... 6-11
Chapter 7 Test Mode Operation
GENERAL ................................................................................ 7-1
Test Categories ....................................................................... 7-1

Table of Contents
x V.3400
Terminating a Test in Progress ............................................... 7-2
TESTING THE LOCAL MODEM ........................................... 7-3
Local Analog Loopback ........................................................ 7-3
Local Analog Loopback with Self Test .................................. 7-4
TESTING THE REMOTE MODEM ........................................ 7-5
Local Digital Loopback .......................................................... 7-5
Grant/Deny RDL Request ..................................................... 7-6
Remote Digital Loopback ....................................................... 7-7
Remote Digital Loopback with Self Test .............................. 7-7
Test Pattern ............................................................................. 7-8
Bilateral Test Enable / Disable .............................................. 7-9
DTE Controlled Remote Digital Loopback (Pin 21) ............. 7-9
DTE Controlled Local Analog Loopback (Pin 18) ................ 7-9
Chapter 8 Security
GENERAL ................................................................................ 8-1
AUTOCALLBACK SECURITY .............................................. 8-1
LOW SECURITY OPERATION .............................................. 8-1
Operating without Low Security ............................................ 8-1
Operating with Low Security ................................................. 8-2
Remote Operation ................................................................... 8-2
Local Operation ...................................................................... 8-2
Passwords ............................................................................... 8-2
LCD Indication of Security ..................................................... 8-3
Restrictions in Security Operation .......................................... 8-3
LOW SECURITY COMMANDS ............................................. 8-3
Set Password ........................................................................... 8-3
Changing a Password .............................................................. 8-3
Deleting a Password ............................................................... 8-3
Security Reset ......................................................................... 8-3
Disabling Security ................................................................ 8-3
Security Status......................................................................... 8-4
Enabling Security .................................................................... 8-4
HIGH SECURITY ..................................................................... 8-4
Compatibility ........................................................................... 8-4
Capacity .................................................................................. 8-4
Operating without High Security ............................................ 8-4
Operating with High Security ................................................. 8-4

Table of Contents
V.3400 xi
SECURITY LEVELS .............................................................. 8-5
Level 1: Password Only .......................................................... 8-5
Level 2: Password with Callback ........................................... 8-5
Level 3: Password with Callback and Password Re-Entry .... 8-5
SUPERUSER ............................................................................ 8-5
Passwords ............................................................................... 8-6
Default Passwords................................................................... 8-6
HIGH SECURITY COMMANDS ........................................... 8-6
Enabling High Security .......................................................... 8-6
Disabling High Security ......................................................... 8-7
Setting Passwords .................................................................. 8-7
Set Security Levels ................................................................ 8-8
Set User Callback Number ..................................................... 8-8
Extended Features................................................................... 8-9
$W1 ..................................................................................... 8-9
$W2 ..................................................................................... 8-9
$W0 ..................................................................................... 8-9
Display Extended Feature Status ........................................... 8-9
Display / Reset Illegal Access Attempt Counters .................. 8-9
Factory Reset ......................................................................... 8-10
Removing a User .................................................................... 8-10
Security Status ....................................................................... 8-10
Display User Status ................................................................ 8-10
Verify User Information ......................................................... 8-11
Request Superuser Privilege .................................................. 8-11
Local Logon Command ......................................................... 8-11
Local Logoff Command ......................................................... 8-11
Remote Logon Procedure ...................................................... 8-11
Chapter 9 Fax Operation
GENERAL ................................................................................ 9-1
FAX OPERATION ................................................................... 9-1
MODEM INITIALIZATION .................................................... 9-2
FAX DEFAULTS ...................................................................... 9-2
Fax Autoanswer ..................................................................... 9-2
FAX ASSOCIATED OPTIONS ................................................ 9-3
Stored FAX Profile ................................................................. 9-3
CLASS 1 DETAILS .................................................................. 9-3

Table of Contents
xii V.3400
CLASS 1 COMMANDS ........................................................... 9-4
Dial Command ........................................................................ 9-4
Answer Command .................................................................. 9-5
On Hook ................................................................................. 9-5
Off Hook ................................................................................ 9-6
Class 0 Operation .................................................................... 9-6
Class 1 Operation .................................................................... 9-6
Service Class Indication ......................................................... 9-6
Service Class Capabilities ...................................................... 9-6
Transmit Silence ..................................................................... 9-6
Receive Silence ....................................................................... 9-7
Fax Transmit and Receive Modes .......................................... 9-7
Facsimile Transmit ................................................................. 9-8
Facsimile Receive ................................................................... 9-8
HDLC Transmit ...................................................................... 9-8
HDLC Receive ....................................................................... 9-9
Test Supported Range of Values ............................................. 9-9
Class 1 Result Code ................................................................ 9-9
Fax Auto Answer .................................................................... 9-10
BINARY FILE TRANSFER ..................................................... 9-10
Chapter 10 Status Registers
S-REGISTERS .......................................................................... 10-1
S-REGISTER OPERATION ..................................................... 10-3
Changing Register Values ....................................................... 10-3
Individual Bit Command ........................................................ 10-4
Autoanswer ............................................................................. 10-5
Ring Count .............................................................................. 10-5
Escape Character .................................................................... 10-5
End-of-Line Character ........................................................... 10-5
Line Feed Character ................................................................ 10-6
Backspace Character ............................................................... 10-6
Pause Before Dialing .............................................................. 10-6
Pause for Ringback and Carrier Detection / Wait for 2nd
Dial Tone ................................................................................ 10-6
Pause Interval for Comma ..................................................... 10-6
Carrier Detect Time ................................................................ 10-6
Lost Carrier Detect Time ........................................................ 10-7

Table of Contents
V.3400 xiii
DTMF Tone Duration ............................................................ 10-7
Escape Sequence Pause .......................................................... 10-7
S13 ......................................................................................... 10-7
Bit Mapped ............................................................................. 10-8
S15 ......................................................................................... 10-8
System Tests .......................................................................... 10-9
S17 ......................................................................................... 10-9
Test Timeout ........................................................................... 10-9
S19, 20 .................................................................................... 10-9
Bit Mapped ............................................................................. 10-10
Bit Mapped ............................................................................. 10-11
Bit Mapped ............................................................................. 10-11
S24 ......................................................................................... 10-11
DTR State Recognition .......................................................... 10-12
RTS/CTS Delay ..................................................................... 10-12
Bit Mapped ............................................................................. 10-12
Lookback Timer ................................................................... 10-12
Bit Mapped ............................................................................. 10-13
Bit Mapped ............................................................................. 10-13
S31 .......................................................................................... 10-13
Bit Mapped ............................................................................. 10-14
S33 ......................................................................................... 10-14
Bit Mapped ............................................................................. 10-14
DTR / Dial Backup Number to Dial ...................................... 10-14
S36-S38 .................................................................................. 10-14
Bit Mapped ............................................................................. 10-15
S40-S43................................................................................... 10-15
XON Character from DTE ..................................................... 10-15
XOFF Character from DTE ................................................... 10-15
S46-48 .................................................................................... 10-15
XON Character to DTE ......................................................... 10-15
XOFF Character to DTE ........................................................ 10-15
S51 ......................................................................................... 10-15
Bit Mapped ............................................................................. 10-16
Automatic Rate Adaption Threshold ..................................... 10-16
Flow Control ......................................................................... 10-17
S55 ......................................................................................... 10-17

Table of Contents
xiv V.3400
V.42 Compression Control ...................................................... 10-17
Bit Mapped.............................................................................. 10-18
Inactivity Timer .................................................................... 10-18
Break Control ......................................................................... 10-18
Bit Mapped ............................................................................. 10-19
DTE Options ........................................................................... 10-19
Disconnect Buffer Delay ......................................................... 10-20
Maximum Transmit Block Size .............................................. 10-20
Auto-Reliable Fallback Character .......................................... 10-20
S65-66 ..................................................................................... 10-20
Link Speed Status.................................................................... 10-21
S68 .......................................................................................... 10-21
DCE Independent Speed ......................................................... 10-22
Operating Mode ...................................................................... 10-22
Operating Mode Status ........................................................... 10-23
Bit Mapped ............................................................................. 10-24
Password Timeout .................................................................. 10-24
Callback Delay ....................................................................... 10-24
Callback Retry ........................................................................ 10-24
Callback Retry Delay .............................................................. 10-25
Lockout Threshold .................................................................. 10-25
Autocallback Timer ................................................................ 10-25
Break Length .......................................................................... 10-25
Serial Port Speed .................................................................... 10-26
Minimum DCE Speed ............................................................ 10-27
S82-S87 .................................................................................. 10-27
Modulation Type...................................................................... 10-28
S89-S90 ................................................................................... 10-28
Current Modulation ................................................................ 10-28
S92 - S94 ................................................................................ 10-28
V.34 Settings ........................................................................... 10-29
V.34 Settings............................................................................ 10-29
S97 - S100 .............................................................................. 10-29
Chapter 11 V.25 bis Autodialer
GENERAL ............................................................................... 11-1
Autodialer Command Strings and Parameters ........................ 11-1
GUIDELINES ........................................................................... 11-2

Table of Contents
V.3400 xv
Invalid Responses Explanations ............................................ 11-3
DIAL PARAMETERS .............................................................. 11-4
V.25 BIS COMMAND AND RESPONSE DEFINITIONS ..... 11-4
Dial Command ....................................................................... 11-5
Program Number Command .................................................. 11-6
Intermediate Call Progress Response ..................................... 11-6
Dial Stored Number ................................................................ 11-6
Request List of Stored Numbers ............................................ 11-7
Disregard Incoming Call ........................................................ 11-7
Connect Incoming Call .......................................................... 11-8
Redial Last Number ............................................................... 11-8
Link Number by Address ....................................................... 11-9
Request List of Linked Numbers ........................................... 11-10
Request List of Version .......................................................... 11-11
MODEM OPTIONS COMMAND ...................................... 11-11
Save Current Settings ............................................................. 11-13
Restore Factory Settings ........................................................ 11-13
Request List of Stored Options .............................................. 11-14
OPTIONS .................................................................................. 11-16
Chapter 12 Maintenance
GENERAL ................................................................................ 12-1
FUSE ......................................................................................... 12-1
MAINTENANCE ..................................................................... 12-1
Appendix A Specifications
Appendix B Phone Jack Descriptions
LINE PIN FUNCTIONS .......................................................... B-1
AUX PIN FUNCTIONS ........................................................... B-1
Appendix C Strap Options
STRAP OPTION SELECTION ................................................ C-1
Removing the Cover .............................................................. C-1
HARDWARE STRAPS ............................................................ C-3
Tip and Ring Polarity ............................................................. C-3
Ground Option Strap .............................................................. C-3
QM Disable Option ................................................................ C-4
QM Normal/Inverted ............................................................. C-4

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xvi V.3400
Appendix D Fault Isolation Procedure
FAULT ISOLATION PROCEDURE ........................................ D-1
Telephone Interface ................................................................ D-1
Standard Phone ....................................................................... D-1
MODEM AND TELEPHONE LINE CHECK ......................... D-2
Step 1 ...................................................................................... D-2
Step 2 ...................................................................................... D-3
Appendix E Command Index and Defaults
GENERAL ................................................................................ E-1
FACTORY OPTION SETS ....................................................... E-19
Appendix F Acronyms and Abbreviations
.................................................................................................... F-1
Appendix G ASCII and EBCDIC Characters
GENERAL ................................................................................ G-1
Service and Support
Index

Table of Contents
V.3400 xvii
Figures
Chapter 1
1-1 Typical Front Pane l ....................................................... 1-4
1-2 Rear Panel (115 Vac Model) ......................................... 1-4
Chapter 2
2-1 Rear Panel Connections ................................................. 2-1
2-2 Digital Interface Signals ................................................ 2-2
2-3 Dial-up Connection ........................................................ 2-6
2-4 Leased Line Connection ................................................ 2-8
Chapter 5
5-1 Configuration Storage and Recall .................................. 5-39
Chapter 7
7-1 Local Analog Loopback ................................................. 7-3
7-2 Local Analog with Test Pattern ..................................... 7-5
7-3 Local Digital Loopback with Bilateral Loopback
Enabled .......................................................................... 7-6
7-4 Remote Digital Loopback with Digital Bilateral
Loopback Enabled ......................................................... 7-7
7-5 Local Modem Initiating Remote Digital Loopback with
Test Pattern .................................................................... 7-8
Chapter 10
10-1 Changing S-Register Values .......................................... 10-2
10-2 Calculating S-Register Values ....................................... 10-3
Appendix C
C-1 Cover Removal .............................................................. C-1
C-2 Strap Locations ............................................................... C-2
C-3 Typical Strap Configuration ........................................... C-3

Table of Contents
xviii V.3400
Tables
Chapter 1
2-1 Digital Interface Signal Descriptions ............................. 2-3
Chapter 4
4-1 Menu Options ................................................................. 4-3
Chapter 7
7-1 Test Operating Mode Requirements ............................... 7-1
7-2 Test Commands .............................................................. 7-2
Chapter 9
9-1 Modulation Values ......................................................... 9-7
Chapter 11
11-1 V.25 bis Dial Parameters................................................. 11-4
Appendix E
E-1 AT Commands ................................................................ E-1
E-2 Low Security Commands ............................................... E-11
E-3 High Security Commands ............................................... E-12
E-4 Fax Commands ............................................................... E-13
E-5 Commands Valid Only in Fax Mode .............................. E-13
E-6 Status Registers .............................................................. E-14
E-7 V.25 bis Dialer Commands ............................................ E-16
E-8 Response Messages ........................................................ E-17

V.3400 1-1
Chapter 1
Introduction
GENERAL
The Motorola V.3400 series of modems are synchronous, asynchronous,
and fax modems that can establish and maintain data communications or
facsimile links between a computer at your location, and a remote
computer, fax, or Data Terminal Equipment (DTE) located anywhere a
standard or cellular telephone can reach. Data transmission can be over
standard dial-up, private leased telephone lines, or wireless communica-
tion.
The V.3400 series of modems communicate at standard data rates up to
28800 bps with compatible modems connected to similarly equipped
computers, computer services, and data bases. Advanced error control
and data compression ensure data integrity and increase data
throughput.
When used with a Class 1 Fax software package, the modem can
exchange fax documents at data rates of up to 14400 bps with any
Group 3 fax machine or PC with a fax modem.
A high level security feature allows secure operation of the modem both
locally and remotely.
FEATURES
The modem is a flexible telecommunications tool that offers outstanding
compatibility and the following standard features:
Data Mode
•Full-duplex operation on 2-wire public, 2-wire or 4-wire private
telephone connections with 2-wire public automatic or manual
backup
•300, 1200, 2400, 4800, 7200, 9600, 12000, 14400, 16800, 19200,
21600, 24000, 26400, and 28800 bps DCE data rates

Introduction
1-2 V.3400
•Compatible with these standards:
CCITT V.34
CCITT V.33
CCITT V.32 bis
CCITT V.32
CCITT V.29
CCITT V.27
CCITT V.22 bis
CCITT V.22
CCITT V.21
CCITT V.13
Bell 212A
Bell 103
Plus a variety of software packages
•Synchronous operation at all DCE data rates, and asynchronous
operation up to 115200 bps
•CCITT V.42 bis and MNP level 5 data compression
•CCITT V.42 and MNP 4 error control protocol
•LCD configuration and status for easy operation
•Front panel lockout
•Autodial and Autoanswer capability
•Autobaud DTE rate and character format selection
•AT command set
•V.25 bis autodialer
•Configuration memory
•Phone number storage
•Multiple levels of security with auto callback and password
protection and up to 50 users
•Automatic speed matching to originating modem
•Remote configuration using command mode or LCD
•Built-in standard diagnosticsfor testing phone line quality and
modems at each end
•801 auto dial support