Multitech MT5634ZBA-USB, MT5634IND, MT5634ZPX-PCI, MT5634ZPX-ISA, ISI5634UPCI Command Reference Manual

MultiModem®

External Modems

MultiModem® ZBA (MT5634ZBA Global and Non-Global Series)

MultiModem® ZBA USB (MT5634ZBA-USB)

MultiModem® IND (MT5634IND)

MultiModem® DID (MT5634ZBA-DID)

Internal Modems

MultiModem® ZPX (MT5634ZPX-PCI Series)

MultiModem® ZPX (MT5634ZPX-ISA)

Server Cards

MultiModem® ISI (ISI5634UPCI Series)

AT Commands

Reference Guide

Copyright and Technical Support

AT Commands Reference Guide
Products: External Modems: MT

Internal Modems: MT
Server Cards: ISI5634UP

5634ZBA Series, MT5634ZBA-USB, MT5634IND, MT5634DID

5634ZPX-PCI Series, MT5634ZPX-ISA,

CI Series

Legacy Modems: MT5634ZLX Series

PN S000272H, Version H

Copyright

T

his publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-

Tech Systems, Inc. All rights reserved. Copyright © 2002-5, by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically

disclaims any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Multi-Tech
Systems, Inc. reserves the right to revise this publication and to make changes from time to time in the content hereof
without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or changes.

Revisions

vision Level Date Description

Re

A 10/30/02 Initial release.
B 02/24/03 Change +PIG=0 to enable PCM upstream with default 1.
Add #CBS4. Add +VRID.
C 10/01/03 The guide is now applicable to the ISI5634PCI.
D 11/17/03 This guide is now applicable to the MT5634ZPX-ISA. Explained the default for

the S-Register S0: the default for internal modems is 0 while the default external
modems is 1.

E 01/04/05 Removed \X command. Adde d &L for the MT5634IND. Added Index cross-

references. Changed font.

F 12/30/05 Changed the description of \N1. Added a chapter on setting country codes.
G 04/11/07 Updated the Technical Su pport contact list.
H 12/28/07 Changed Technical Support contact list.

Trademarks

MultiMod

em and the Multi-Tech logo are Registered Trademarks of Multi-Tech Systems, Inc.

World Headquarters

Multi-T

ech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]

Technical Support
Country By Email By Phone

e, Middle East, Africa: [e-mail] +(44) 118 959 7774

Europ
U.S., Canada, all others: [e-mail] [phone] or [phone]

Internet Address: http://www.multitech.com

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 2

Contents

Contents

Chapter 1 - AT Commands............................................................................................................................................4

Introduction..............................................................................................................................................................4

List of General Commands .....................................................................................................................................5

List of V.92 Commands ...........................................................................................................................................6

List of Caller ID Commands ....................................................................................................................................6

List of Callback Commands....................................................................................................................................6

List of Escape Commands ......................................................................................................................................7

List of DID Commands.............................................................................................................................................7

AT Commands Detail...............................................................................................................................................8

V.92 Commands.....................................................................................................................................................17

Caller ID Commands..............................................................................................................................................21

Callback Security Commands...............................................................................................................................22

Escape Sequence Commands..............................................................................................................................23

DID Commands ......................................................................................................................................................24

Chapter 2 - S-Registers...............................................................................................................................................26

Chapter 3 - Result Codes............................................................................................................................................29

Chapter 4 – Setting Your Country or Regional Code................................................................................................30

Global Modem Configuration................................................................................................................................30

Windows® Users..................................................................................................................................................30

Non-Windows® Users..........................................................................................................................................30

MultiModem® Configuration.................................................................................................................................30

Index .............................................................................................................................................................................31

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 3

Chapter 1 – AT Commands

Chapter 1 - AT Comm ands

Introduction

The AT commands are used to control the operation of your modem. They are called AT commands bec ause the
characters AT must precede each command to get the ATtention of the modem.

AT commands can be issued only when the modem is in command mode or online command mode. The modem
is in command mode whenever it is not connected to another modem. The modem is in data mode whenever it is
connected to another modem and ready to exchange data. Online command mode is a tempor ary state in which
you can issue commands to the modem while connected to another modem. To put the modem into online
command mode from data mode, you must issue an escape sequence (+++) followed immediately by the AT
characters and the command, e.g., +++ to hang up the modem. To return to data mode from online command
mode, you must issue the command ATO.

To send AT commands to the modem you must use a communications program, such as the HyperTerminal
applet in Windows 98/95 and NT 4.0, or some other available terminal program. You can issue commands to the
modem either directly, by typing them in the terminal window of the communications program, or indirectly, by
configuring the operating system or communications program to send the commands automatically. Fortunately,
communications programs make daily operation of modems effortless by hiding the commands from the user.
Most users, therefore, need to use AT commands only when reconfiguring the modem, e.g., to turn autoanswer
on or off.

The format for entering an AT command is ATXn, where X is the command and n is the specific value for the
command, sometimes called the command parameter. The value is always a number. If the value is zero, you
can omit it from the command; thus, AT&W is equivalent to AT&W0. Most commands have a default value,
which is the value that is set at the factory.

You must press ENTER (depending on the terminal program it could be some other key) to send the command
to the modem. Any time the modem receives a command, it sends a response known as a result code. The
most common result codes are OK, ERROR, and the CONNECT messages that the modem sends to the
computer when it is connecting to another modem.

You can issue several commands in one line, in what is called a command string. The command string begins
with AT and ends when you press ENTER. Spaces to separate the commands are optional; the command
interpreter ignores them. The most familiar command string is the initialization string, which is used to
configure the modem when it is turned on or reset, or when your communications software calls another modem.

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 4

List of General Commands

Command Description

AT Attention Code

A Answer

A/ Repeat Last Command

B Communication Standard Setting – Bell or CCITT

D Dial

%M Enable Dialing Message

DS=n Dial Stored Telephone Number

E Echo Command

F Echo Online Data Characters

H Disconnect (Hang Up)

I Information Request

L Not Applicable

M Monitor Speaker Mode

N Modulation Handshake

O Return to Online Data Mode

P Set Pulse Dial Default

Q Result Codes Enable/Disable

Sr=n Set Register Value

Sr? Read Register Value

T Set Tone Dial Default

V Result Code Format

W Result Code Options

X Result Code Selection

Z Modem Reset

&C Data Carrier Detect (DCD) Control

&D Data Terminal Ready (DTR) Control

&E XON/OFF Pacing Control

&F Restore Factory Settings (Configuration)

&G Select Guard Tone Control

&K Flow Control Selection

&L Leased-Line Operation

&Q Asynchronous Communication Mode (same as \N Error Correction Mode)

&S Data Set Ready (DSR) Control

&T Loopback Tests

&V Display Current Settings (Configuration and Stored Profiles)

&W Store Current Settings (Configuration and Stored Profiles)

&Zn=x Store Dialing Command

\A Select Maximum MNP Block Size

\B Transmit Break to Remote

\K Break Control

\N Error Correction Mode Selection

\Q Flow Control Selection

\T Inactivity Timer

\V Protocol Result Code

-C Data Calling Tone

%A Adaptive Answer Result Code Enable

%B View Numbers in Blacklist

%C Data Compression Enable/Disable

%DC AT Command Control

%DT “AT” Command Timer

%E Fallback and Fall Forward Control

%H Direct Connect Enable

%R Cisco Configuration

%S Response Speed

$D DTR Dialing

$EB Asynchronous Word Length

$LB Long Break

$RP Response Priority

$SB Serial Port Baud Rate

Chapter 1 – AT Commands

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 5

List of V.92 Commands

Command Description

+PCW=n Call Waiting Enable
+PIG=n PCM Upstream Enable
+PMH=n Modem-on-Hold Enable
+PMHF V.92 Modem Hook Flash
+PMHR=n Modem-on-Hold Initiate
+PMHTR=n Modem-on-Hold Timer
+PQC=n Quick Connect Control
+DCS=x,y Select V.44 Data Compression
+DR=n V.44 Data Compression Reporting
+DS44=n V.44 Data Compressio n
+MS Modulation Selection
$FC Quick Connect

List of Caller ID Commands

Command Description

+VCID Caller ID Enable/Disable
+VDR=x,y Distinctive Ring Report “ERROR”
+VRID Allows query of modem’s last call received

Chapter 1 – AT Commands

List of Callback Commands

These commands are used with modems that support Callback Security

Command Description

#CBA Callback Attempts
#CBD Callback Delay
#CBF? Callback Failed Attempts Display
#CBFR Callback Failed Attempts Reset
#CBI Local Callback Inactivity Timer
#CBNy=x Store Callback Password
#CBP Callback Parity
#CBR Callback Security Reset
#CBS Callback Enable/Disable
#P Set 11-bit Parity
#Sx Enter Setup Password
#S=x Store Setup Password

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 6

List of Escape Commands

Command Description

+++AT Escape Sequence
%%%ATMTSMODEM Remote Configuration Escape Sequence

List of DID Commands

Command Description

*DD Digit Format
*DF Format for Reporting Incoming DID Number
*DS Start Protocol
*DT Wait for Digit Time-Out Time
*DW Busy Out After Call Completion
*DN Number of DID Digits
*DW Busy Out After Call Completion
*DN Number of DID Digits

Chapter 1 – AT Commands

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 7

Chapter 1 – AT Commands

AT Commands Detail

Command: AT Attention Code

Values: n/a
Description: The attention code precedes all command lines except A/ and escape sequences.

Command: A Answer

Values: n/a
Description: Answer an incoming call before the final ring.

Command: A/ Repeat Last Command

Values: n/a
Description: Repeat the last command string. Do not precede this command with AT. Do not press E

to execute.

Command: Bn Communication Standard Setting

Values: n = 0-3, 15, 16
Default: 1 and 16
Description: B0 Select ITU-T V.22 mode when modem is at 1200 bps
B1 Select Bell 212A when modem is 1200 bps.
B2 Deselect V.23 reverse channel (same as B3).
B3 Deselect V.23 reverse channel (same as B2).
B15 Select V.21 when modem is at 300 bps.
B16 Select Bell 10 3 when modem is at 300 bps.

NTER

Command: Ds Dial

Values: s = dial string (phone number and dial modifiers)
Default: none
Description: Dial telephone number s, where s may be up to 40 characters long and include these

characters: 0-9, *, #, A, B, C, D

Can also include these D ial String Modifiers: L, P, T, W, S, comma (,), semicolon (;), !, @, ^,

and $.

Dial String Characters and Modifiers

0-9 DTMF digits 0 to 9.
* The 'star' digit (tone dialing only).
# The 'gate' digit (tone dialing only).
A-D Some countries may prohibit sending of these digits during dialing (tone dialing

only)

L Redial last number. (Must be placed immediately after ATD.)

P Selects pulse dialing until a T is encountered. Affects current and subsequent

dialing. Some countries prevent changing dialing modes after the first digit is
dialed.

T Selects tone dialing until a P is encountered. Affects current and subsequent

dialing. Some countries prevent changing dialing modes after the first digit is
dialed.

W Wait for a new dial tone before continui ng to dial. (X2, X4, X5, X6, or X7 must be

selected).

S=n Dial the number stored in the directory (n = 0 to 3). (See &Z.)
, Pause during dialing for set set in in register S8.
; Return to command mode after dialing. Place at the end of dial string.
! Hook Flash. Causes the modem to go on-hook for a time defined by the value of

S29, then off-hook again. Country requirements may limit the time imposed.

@ Wait for quiet answer (silence). Causes the modem to wait for a ring back, then 5

seconds of silence before processing the next part of the command. If silence is
not detected, the modem returns a NO ANSWER code.

^ Toggles the calling tone between enable/disable. Applicable to current dial

attempt only.

$ Detect AT&T call card “bong” tone. The character should fol low the phone

number and precede the user’s call card number:

ATDT1028806127853500$123456789

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 8

Chapter 1 – AT Commands

Ignored Characters

( ) Ignored: may be used to format the dial string.

- Ignored: may be used to format the dial string.
<space> Ignored: may be used to format the dial string.
<i> Invalid character: will be ignored.

Command: %M Enable Dialing Message

Values: 0, 1
Default: 0
Description: Enables dialing message. It will display when the ATDL=n command is used and dialing

from memory or DTR dialing.
0 = Disabled - turns diali ng message off
1 = Enabled - turns dialing message on

Command: DS=n Dial Stored Telephone Number

Values: n = 0, 1, 2
Default: none
Description: Dials a number previously stored in the directory by the &Zn=x command. Ex: ATDS=2.

Command: En Echo Command

Values: n = 0 or 1
Default: 1
Description: E0 Disables echo command.
E1 Enables echo command.

Command: Fn Echo Online Data Characters

Values: n = 0, 1
Default: 1
Description: F0 Enables online data character echo. (Not supported.)
F1 Disables online data character echo (included for backward compatibility).

Command: Hn Disconnect (Hang Up)

Values: n = 0 or 1
Default: 0
Description: H0 The modem goes on-hook (hangs up).
H1 The modem goes off-hook (makes the phone line busy).

Command: In Information Request

Values: n = 0–5, 9, 11
Default: None
Description: I0 Displ ays default speed and controller firmware version.
I1 Calculates and displays ROM checksum (e.g., B399).
I2 Checks ROM and verifies the checksum, displaying OK or ERROR.
I3 Displays default speed and controller firmware version.
I4 Displays firmware version for data pump (e.g., 17)..
I5 Displays the board ID: software version, hardware version, and the country ID in

hexidecimal format (e.g., s0503a01V, 0,34).
I7 Displays release information and V.92 capabilities.
I9 Displa ys the country code in decimal format (e.g., 52).
I11 Displays diagnostic information for the last modem connection, such as DSP and

firmware version, link type, line speed, serial speed, type of error correction/data

compression, number of past retrains, etc.

Command: Ln Not Applicable

Command: Mn Monitor Speaker Mod e

Values: n = 0, 1, 2, or 3
Default: 1
Description: M0 Speaker always off.
M1 Speaker on until carrier signal detected.
M2 Speaker always on when modem is off-hook.
M3 Speaker on until carrier is detected, except while dialing.

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 9

Chapter 1 – AT Commands

Command: Nn Modulation Handshake

Values: n = 0 or 1
Default: 1
Description: N0 Modem performs handshake only at communication standard specified by S37 and the

B command.
N1 Modem begins handshake at communication standard specified by S37 and the B

command. During handshake, fallback to a lower speed can occur.

Command: On Return to Online Data Mode

Values: 0, 1, 3
Default: None
Description: O0 Exits online command and returns to data mode (see +++AT escape sequence).
O1 Issues a retrain and returns to online data mode.
O3 Issues a rate renegotiation and returns to data mode.

Command: P Set Pulse Dial Default

Values: P, T
Default: T
Description: Configures the modem for pulse (non-touch-tone) dialing. Dialed digits are puls ed until a T

command or dial modifier is received.

Command: Qn Result Codes Enable/Disable

Values: n = 0 or 1
Default: 0
Description: Q0 Enables result codes.
Q1 Disables result codes.
Q2 Dumb Answer Mode (also known as No Response Answer). Q2 sets the answer

mode to be handled without responses and echo turned off; however, the originate
mode remains intelligent.

Command: Sr=n Set Register Value

Values: r = S-Register number; n varies
Default: None
Description: Sets the value of the register Sr to the value of n, where n is entered in decimal format:

Example: S0=1.

Command: Sr? Read Register Value

Values: r = S-Register number
Default: None
Description: Reads the value of the register Sr and displays it in 3-digit decimal form. Example: S2?

gives the response 043.

Command: T Set Tone Dial Default

Values: P, T
Default: T
Description: Configures the modem DTMF (touch-tone) dialing. Dialed digits are tone dialed until a P

command or dial modifier is received.

Command: Vn Result Code Format

Values: n = 0 or 1
Default: 1
Description: V0 Displays result codes as digits (short form or terse).

V1 Displays result codes as words (long-form or verbose).

Command: Wn Result Code Options

Values: n = 0, 1, 2
Default: 2
Description: W0 CONNECT result code reports serial port speed, disables protocol result codes.
W1 CONNECT result code reports serial port speed, enables protocol result codes.
W2 CONNECT result code reports line speed, enables protocol result codes.

Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272H) 10