Modem Initialization Strings

This document provides tables that contain modem initialization strings and sample modem initialization scripts. Table 1 lists required settings, and error compression (EC) and compression settings for specific modem types. Use this information to create your modem scripts. Table 2 lists information for setting AUX ports. SeeLegend to Symbols Used in Modem Chart Table 3 for a legend of symbols used in these two tables. Sample scripts follow the tables.

For information about configuring lines to support modems, see the chapters in the part “Modem and Dial Shelf Configuration and Management” in this publication.

 

Table 1 Required Settings and EC/Compression Settings

Settings Required for All Modems
Settings for EC/Compression
Modem
FD
AA
CD
DTR
RTS/CTS Flow
LOCK DTE Speed
Best Error
Best Comp
No Error
No Comp

Codex 3260

&F

S0=1

&C1

&D3

*FL3

*SC1

*SM3

*DC1

*SM1

*DC0

USR Courier
USR Sportster

&F

S0=1

&C1

&D3

&H1&R2

&B1

&M4

&K1

&M0

&K0

Global Village
Teleport Gold

&F

S0=1

&C1

&D3

\Q3

\J0

\N7

%C1

\N0

%C0

Telebit
T1600/T3000/WB

&F1

S0=1

&C1

&D3

S58=2
S68=2

S51=6

S180=2
S181=1

S190=1

S180=0
S181=1

S190=0

Telebit
T2500 (ECM)

&F

S0=1

&C1

&D3

S58=2
S68=2

S51=6

S95=2

S98=1
S96=1

S95=0

S98=0
S96=0

Telebit
Trailblazer

&F

S0=1

&C1

 

 

 

 

 

 

 

AT&T Paradyne Dataport

&F

S0=1

&C1

&D3

\Q3

--->

\N7

%C1

\N0

%C0

Hayes modems Accura/
Optima

&F

S0=1

&C1

&D3

&K3

&Q6

&Q5

&Q9

&Q6

<---

Microcom
QX4232 series

&F

S0=1

&C1

&D3

\Q3

\J0

\N6

%C1

\N0

%C0

Motorola UDS
FastTalk II

&F

S0=1

&C1

&D3

\Q3

\J0

\N6

%C1

\N0

%C0

Multitech
MT1432 MT932

&F

S0=1

&C1

&D3

&E4

$BA0

&E1

&E15

&E0

&E14

Digicom
Scout Plus

&F

S0=1

&C1

&D3

*F3

*S1

*E9

<---

*E0

<---

Digicom
SoftModem

&F

S0=1

&C1

&D3

&K3

--->

\N5

%C1

\N0

%C0

Viva
14.4/9642c

&F

S0=1

&C1

&D3

&K3

--->

\N3

%M3

\N0

%M0

ZyXel
U-1496E

&F

S0=1

&C1

&D3

&H3

&B1

&K4

<---

&K0

<---

Supra
V.32bis/28.8

&F

S0=1

&C1

&D3

&K3

--->

\N3

%C1

\N0

%C0

ZOOM
14.4

&F

S0=1

&C1

&D3

&K3

--->

\N3

%C2

\N0

%C0

Intel
External

&F

S0=1

&C1

&D3

\Q3

\J0

\N3

%C1"H3

\N0

%C0

Practical
Peripherals

&F

S0=1

&C1

&D3

&K3

--->

&Q5

&Q9

&Q6

<---

 

Table 2 AUX and Platform Specific Settings

Modem
Settings for Use with AUX Port
Other Settings
Comments
No Echo
No Res
CAB-MDCE
Write Memory

Codex 3260

E0

Q1

&S1

&W

 

USR Courieræ
USR Sportster

E0

Q1

*NA*

&W

 

Global Village
Teleport Gold

E0

Q1

*NA*

&W

 

Telebit
T1600/T3000/WB

E0

Q1

&S4

&W

All Telebit modems need to have the speed set explicitly. These examples use 38400 bps. Using what Telebit calls “UNATTENDED ANSWER MODE” is the best place to start a dial in only modem.

Telebit
T2500 (ECM)

E0

Q1

&S1

&W

Telebit
Trailblazer

E0

Q1

*NA*

&W

Use “ENHANCED COMMAND MODE” on the T2500.

AT&T Paradyne Dataport

E0

Q1

*NA*

&W

Almost all Microcom modems have similar configuration parameters.

Hayes modems Accura/
Optima

E0

Q1

*NA*

&W

 

Microcom
QX4232 series

E0

Q1

*NA*

&W

 

Motorola UDS
FastTalk II

E0

Q1

*NA*

&W

 

Multitech
MT1432 MT932

E0

Q1

&S1

&W

 

Digicom
Scout Plus

E0

Q2

&B2

&W

 

Digicom
SoftModem

E0

Q1

&S1

&W

 

Viva
14.4/9642c

E0

Q1

&S1

&W

 

ZyXel
U-1496E

E0

Q1

&S1

&W

Additional information on ftp.zyxel.com

Supra
V.32bis/28.8

E0

Q1

&S1

&W

 

ZOOM
14.4

E0

Q1

&S1

&W

 

Intel
External

E0

Q1

*NA*

&W

 

Practical
Peripherals

E0

Q1

*NA*

&W

Based on PC288LCD. May vary.

Table 3 Legend to Symbols Used in Modem Chart contains a legend of symbols used inRequired Settings and EC/Compression Settings Table 1 and Table 2 AUX and Platform Specific Settings.

 

Table 3 Legend to Symbols Used in Modem Chart

Symbol
Meaning

*NA*

This option is not available on the noted modem.

-->

The command noted on the right will handle that function.

<--

The command noted on the left will handle that function.

AUX port

These parameters are only required for pre-9.21 AUX ports or any other port without modem control set.

Sample Modem Scripts

The following are several modem command strings that are appropriate for use with your access server or router. For use with the access server, Speed=xxxxxx is a suggested value only. Set the DTE speed of the modem to its maximum capability. By making a reverse Telnet connection in the EXEC mode to the port on the access server where the modem is connected, then sending an at command followed by a carriage return.

In the following example, the modem is attached to asynchronous interface 2 on the access server. The IP address indicated as the server-ip-address is the IP address of the Ethernet 0 interface. The administrator connects from the EXEC to asynchronous interface 2, which has its IP address assigned from Ethernet 0.

2511> telnet server-ip-address port-number
192.156.154.42 2002
 

AST Premium Exec Internal Data/Fax (MNP 5)

Init=AT&F&C1&D3\G0\J0\N3\Q2S7=60S0=1&W
Speed=9600
 

ATi 9600etc/e (V.42bis)

Init=AT&FW2&B1&C1&D3&K3&Q6&U1S7=60S0=1&W
Speed=38400
 

AT&T Paradyne KeepInTouch Card Modem (V.42bis)

Init=AT&FX6&C1&D3\N7\Q2%C1S7=60S0=1&w
Speed=57600
 

AT&T ComSphere 3800 Series (V.42bis)

Init=AT&FX6&C1&D2\N5\Q2%C1"H3S7=60S0=1&W
Speed=57600
 

AT&T DataPort Fax Modem (V.42bis)

Init=AT&FX6&C1&D2\N7\Q2%C1S7=60S0=1&W
Speed=38400
 

Boca Modem 14.4K/V.32bis (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5%C1\N3S7=60S36=7S46=138S95=47S0=1&W
Speed=57600
 

CALPAK MXE-9600

Init=AT&F&C1&D3S7=60S0=1&W
Speed=9600
 

Cardinal 2450MNP (MNP 5)

Init=AT&F&C1&D3\J0\N3\Q2\V1%C1S7=60S0=1&w
Speed=9600
 

Cardinal 9650V32 (MNP)

Init=AT&F&B1&C1&D3&H1&I1&M6S7=60S0=1&W
 

Cardinal 9600V42 (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5\N3%C1%M3S7=60S46=138S48=7S95=3S0=1&W
Speed=38400
 

Cardinal 14400 (V.42bis)

Init=AT&F&C1&D3&K3&Q5\N3%C1%M3S7=60S46=138S48=7S95=47S0=1&W
Speed=57600
 

COMPAQ SpeedPAQ 144 (V.42bis)

Init=AT&F&C1&D3&K3&Q5\J0\N3%C1S7=60S36=7S46=2S48=7S95=47S0=1&W
Speed=57600
 

Data Race RediMODEM V.32/V.32bis

Init=AT&F&C1&D3&K3&Q6\J0\N7\Q3\V2%C1S7=60 Speed=38400S0=1&W
 

Dell NX20 Modem/Fax (MNP)

Init=AT&F&C1&D3%C1\J0\N3\Q3\V1W2S7=60S0=1&W
Speed=9600
 

Digicom Systems (DSI) 9624LE/9624PC (MNP 5)

Init=AT&F&C1&D3*E1*F3*S1S7=60S0=1&W
 

Digicom Systems (DSI) 9624LE+ (V.42bis)

Init=AT&F&C1&D3*E9*F3*N6*S1S7=60S0=1&W
Speed=38400
 

Everex Evercom 24+ and 24E+ (MNP 5)

Init=AT&F&C1&D3\J0\N3\Q2\V1%C1S7=60S0=1&W
 

Everex EverFax 24/96 and 24/96E (MNP 5)

Init=AT&F&C1&D3\J0\N3\Q2\V1%C1S7=60S0=1&W
Speed=9600
 

Everex Evercom 96+ and 96E+ (V.42bis)

Init=AT&FW2&C1&D3\J0\N3\Q2\V2%C1S7=60S0=1&W
Speed=38400
 

Freedom Series V.32 bis Data/FAX Modem

Init=AT&F&C1&D3&K3&Q6\J0\N7\Q3\V2%C1S7=60S0=1&W
Speed=38400
 

Gateway 2000 TelePath

Init=AT&FW2&C1&D3&K3&Q5\N3%C1S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=38400
 

Gateway 2000 Nomad 9600 BPS Internal Modem

Init=AT&F&C1&D3%C1\J0\N3\Q2S7=60S0=1&W
Speed=38400
 

GVC SM-96V (V.42bis)

Init=AT&F&C1&D3%C1\J0\N6\Q2\V1S7=60S0=1&W
Speed=38400
 

GVC SM-144V (V.42bis)

Init=AT&F&C1&D3%C1\J0\N6\Q2\V1S7=60S0=1&W
Speed=57600
 

Hayes Smartmodem Optima 9600 (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5S7=60S46=138S48=7S95=47S0=1&W
Speed=38400
 

Hayes Smartmodem Optima 14400 (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5S7=60S46=138S48=7S95=47S0=1&W
Speed=57600
 

Hayes Optima 28800 (V.34)

Init=AT&FS0=1&C1&D3&K3&Q6&Q5&Q9&W
Speed=115200
 

Hayes V-series Smartmodem 9600/9600B (V.42)

Init=AT&F&C1&D3&K3&Q5S7=60S0=1&W
Speed=9600
 

Hayes V-series ULTRA Smartmodem 9600 (V.42bis)

Init=AT&F&C1&D3&K3&Q5S7=60S46=2S48=7S95=63S0=1&W
Speed=38400
 

Hayes V-series ULTRA Smartmodem 14400 (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5S7=60S38=10S46=2S48=7S95=63S0=1&W
Speed=38400
 

Hayes ACCURA 24 EC (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5S7=60S36=7S46=138S48=7S95=47S0=1&W
 

Hayes ACCURA 96 EC (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=38400
 

Hayes ACCURA 144 EC (V.42bis)

Init=AT&FW2&C1&D3&K3&Q5S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=57600
 

Hayes ISDN System Adapter

Init=AT&FW1&C1&D3&K3&Q0S7=60S0=1&W
Speed=57600
 

IBM 7855 Modem Model 10 (MNP)

Init=AT&F&C1&D3\N3\Q2\V1%C1S7=60S0=1&W
 

IBM Data/Fax Modem PCMCIA (V.42bis)

Init=AT&F&C1&D3&K3&Q5%C3\N3S7=60S38=7S46=138S48=7S95=47S0=1&W
Speed=57600
 

Identity ID9632E

Init=AT&F&C1&D3S7=60S0=1&W
Speed=9600
 

Infotel V.42X (V.42bis)

Init=AT&F&C1&D3S7=30S36=7S0=1&W
Speed=9600
 

Infotel V.32 turbo (V.42bis)

Init=AT&FW1&C1&D3&K3&Q5S7=60S0=1&w
Speed=38400
 

Infotel 144I (V.42bis)

Init=AT&F&C1&D3&K3&Q5\N3%C1S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=38400
 

Intel 9600 EX (V.42bis)

Init=AT&F&C1&D3\J0\N3\Q2\V2%C1"H3S7=60S0=1&W
Speed=38400
 

Intel 14400 EX (V.42bis)

Init=AT&F&C1&D3\J0\N3\Q2\V2%C1"H3S7=60S0=1&W
Speed=38400
 

Macronix MaxFax 9624LT-S

Init=AT&F&C1&D3&K3&Q9\J0\N3\Q3%C1S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=9600
 

Megahertz T3144 internal (V.42bis)

Init=AT&F&C1&D3%C1\J0\N3\Q2\V2S7=60S0=1&W
Speed=57600
 

Megahertz T324FM internal (V.42bis)

Init=AT&F&C1&D3%C1\J0\N3\Q2\V1S7=60S46=138S48=7S0=1&W
Speed=9600
 

Megahertz P2144 FAX/Modem (V.42bis)

Init=AT&F&C1&D3%C1\J0\N7\Q2\V2S7=60S0=1&W
Speed=38400
 

Megahertz T396FM internal (V.42bis)

Init=AT&FW2&C1&D3%C1\J0\N7\Q2\V2S7=60S0=1&W
Speed=38400
 

Megahertz CC3144 PCMCIA card modem (V.42bis)

Init=AT&F&C1&D3&K3&Q5%C3\N3S7=60S38=7S46=138S48=7S95=47S0=1&W
Speed=57600
 

Microcom AX/9624c (MNP 5)

Init=AT&F&C1&D3\G0\J0\N3\Q2%C1S7=60S0=1&W
Speed=9600
 

Microcom AX/9600 Plus (MNP 5)

Init=AT&F&C1&D3\J0\N3\Q2S7=60S0=1&W
 

Microcom QX/V.32c (MNP 5)

Init=AT&F&C1&D3\J0%C3\N3\Q2S7=60S0=1&W
Speed=38400
 

Microcom QX/4232hs (V.42bis)

Init=AT&F&C1&D3\J0%C3\N3\Q2-K0\V2S7=60S0=1&W
Speed=38400
 

Microcom QX/4232 bis (V.42bis)

Init=AT&F&C1&D3\J0%C3\N3\Q2-K0\V2W2S7=60S0=1&W
Speed=38400
 

Microcom Deskporte 28800 (V.34)

Init=AT&F&c1&q1E0S0=1&W
Speed=115200
 

Microcom MicroPorte 542 (V.42bis)

Init=AT&F&C1&D3&Q5S7=60S46=138S48=7S95=47S0=1&W
Speed=9600
 

Microcom MicroPorte 1042 (V.42bis)

Init=AT&F&C1&D3%C3\J0-M0\N6\Q2\V2S7=60S0=1&W
Speed=9600
 

Microcom MicroPorte 4232 bis (V.42bis)

Init=AT&F&C1&D3%C3%G0\J0-M0\N6\Q2\V2S7=60S0=1&W
Speed=38400
 

Microcom DeskPorte FAST

Init=ATX4S7=60-M1\V4\N2L1S0=1&W
Speed=57600
 

Motorola/Codex 3220 (MNP)

Init=AT&F&C1&D3*DC1*FL3*MF0*SM3*XC2S7=60S0=1&W
 

Motorola/Codex 3220 Plus (V.42bis)

Init=AT&F&C1&D3*DC1*EC0*MF0*SM3*XC2S7=60S0=1&W
Speed=38400
 

Motorola/Codex 326X Series (V.42bis)

Init=AT&F&C1&D3*FL3*MF0*SM3*TT2*XC2S7=60S0=1&W
Speed=38400
 

MultiTech MultiModem V32EC (V.42bis)

Init=AT&FX4&C1&D3$BA0&E1&E4&E15#L0S7=60S0=1&W
Speed=38400
 

MultiTech MultiModem V32 (no MNP or V.42)

Init=AT&F&C1&D3S7=60S0=1&W
Speed=9600
 

MultiTech MultiModem 696E (MNP)

Init=AT&F&C1&D3$BA0&E1&E4&E15S7=60S0=1&W
 

MultiTech MultiModem II MT932 (V.42bis)

Init=AT&FX4&C1&D3$BA0&E1&E4&E15#L0S7=60S0=1&W
Speed=38400
 

MultiTech MultiModem II MT1432 (V.42bis)

Init=AT&FX4&C1&D3#A0$BA0&E1&E4&E15#L0S7=60S0=1&W
Speed=57600
 

NEC UltraLite 14.4 Data/Fax Modem (V.42bis)

Init=AT&F&C1&D3&K3&Q4\J0\N7\Q2W2%C1S7=60S0=1&W
Speed=38400
 

Practical Peripherals PC28800SA (V.42bis)

Init=AT&F&C1&D3&K3&Q5S7=60S36=7S46=2S48=7S95=47S0=1&W
Speed=115200
 

Practical Peripherals PM9600SA (V.42bis)

Init=AT&F&C1&D3&K3&Q5S46=138S48=7S7=60S0=1&W
Speed=38400
 

Practical Peripherals PM14400FX (V.42bis)

Init=AT&F&C1&D3&K3&Q5S7=60S36=7S46=2S48=7S95=47S0=1&W
Speed=57600
 

Practical Peripherals PM14400SA (V.42bis)

Init=AT&F&C1&D3&K3&Q5S7=60S36=7S46=2S48=7S95=47S0=1&W
Speed=57600
 

Prometheus ProModem 9600 Plus (V.42)

Init=AT&F&C1&D3*E7*F3S7=60S0=1&W
 

Prometheus ProModem Ultima (V.42bis)

Init=AT&F&C1&D3*E9*F3*N6*S1S7=60S0=1&W
Speed=38400
 

Racal Datacomm ALM 3223 (V.42bis)

Init=AT&F&C1&D3\M0\N3\P2\Q1\V1S7=60S0=1&W
Speed=38400
 

Supra FAXModem V.32 bis (V.42bis)

Init=AT&FN1W2&C1&D1&K3&Q5\N3%C1S7=60S36=7S48=7S95=45S0=1&W
Speed=57600
 

Telebit T1600 (V.42bis)

Init=AT&FX2&C1&D3&R3S7=60S51=6S58=0S59=15S68=2S180=2S190=1S0=1&W
Speed=38400
 

Telebit T2500 (V.42bis)

Init=AT~&FX2S7=60S51=5S52=2S66=1S68=2S97=1S98=3S106=1S131=1S0=1&W
 
Telebit T3000 (V.42bis)
Init=AT&FX2&C1&D3S51=6S59=7S68=2S7=60S0=1&W
Speed=38400
 

Telebit QBlazer (V.42bis)

Init=AT&FX2&C1&D3S59=7S68=2S7=60S0=1&W
Speed=38400
 

Texas Instruments V.32 bis Internal Modem

Init=AT&F&C1&D3%C1\J0\N7\Q2\V2S7=60S0=1&W
Speed=38400
 

Toshiba T24/DF Internal

Init=AT&F&C1&D3\J0\N3\Q2%C1S7=60S36=7S46=138S48=7S0=1&W
Speed=9600
 

Universal Data Systems FasTalk V.32/42b (V.42bis)

Init=AT&F&C1&D3\J0\M0\N7\V1\Q2%C1S7=60S0=1&W
Speed=38400
 

Universal Data Systems V.32 (no MNP or V.42)

Init=AT&F&C1&D2S7=60S0=1&W
Speed=9600
 

Universal Data Systems V.3224 (MNP 4)

Init=AT&F&C1&D2\J0\N3\Q2S7=60S0=1&W
 

Universal Data Systems V.3225 (MNP 5)

Init=AT&F&C1&D2\J0\N3\Q2%C1S7=60S0=1&W
 

Universal Data Systems V.3227 (V.42bis)

Init=AT&F&C1&D2\J0\M0\N7\Q2%C1S7=60S0=1&W
Speed=38400
 

Universal Data Systems V.3229 (V.42bis)

Init=AT&F&C1&D3\J0\M0\N7\Q2%C1S7=60S0=1&W
Speed=38400
 

US Robotics Sportster 9600 (V.42bis)

Init=AT&FX4&A3&B1&D3&H1&I0&K1&M4S7=60S0=1&W
Speed=38400
 

US Robotics Sportster 14400 (V.42bis)

Init=AT&FX4&A3&B1&D3&H1&I0&K1&M4S7=60S0=1&W
Speed=57600
 

US Robotics Sportster 14400 (V.42bis) x

Init=AT&FX4&B1&C1&D2&H1&K1&M4E0X7Q0V1S0=1&W
Speed=57600
 

US Robotics Sportster 28800 (V.34)

Init=AT&FS0=1&C1&D2&H1&R2&N14&B1&W
Speed=115200
 

US Robotics Courier 28800 (V.34)

Init=AT&FS0=1&C1&D2&H1&R2&N14&B1&W
Speed=115200
 

US Robotics Courier V.32bis (V.42bis)

Init=AT&FX4&A3&C1&D2&M4&H1&K1&B1S0=1&W
Speed=38400
 

US Robotics Courier HST Dual Standard (V.42bis)

Init=AT&FB0X4&A3&C1&D2&M4&H1&K1&B1&R2&S1S0=1&W
Speed=115200
 

US Robotics Courier HST (V.42bis)

Init=AT&FB0X4&A3&C1&D2&M1&H1&K1&B1S0=1&W
Speed=115200
 

US Robotics WorldPort 2496 FAX/Data (V.42bis)

Init=AT&FX4&C1&D3%C1"H3\J0-J1\N3\Q2\V2S7=60S0=1&W
Speed=57600
 

US Robotics WorldPort 9696 FAX/Data (MNP 5)

Init=AT&FX4&C1&D3%C1\J0\N3\Q2\V2S7=60S0=1&W
 

US Robotics WorldPort 9600 (MNP 5)

Init=AT&FX4&C1&D3%C1\J0\N3\Q2\V2S7=60S0=1&W
 

US Robotics WorldPort 14400 (V.42bis)

Init=AT&FX4&A3&B1&C1&D3&H1&K1&M4S7=60S0=1&W
Speed=57600
 

Ven-Tel PCM 9600 Plus (MNP)

Init=AT&FB0&C1&D3\N3\Q3%B0%C1%F1S7=60S0=1&W
 

ViVa 9642e (V.42bis)

Init=AT&F&C1&D3&K3&Q5\N3%C3S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=38400
 

ViVa 14.4/FAX (V.42bis)

Init=AT&F&C1&D3&K3&Q5\N3%C3S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=38400
 

ZOOM V.32 turbo (V.42bis)

Init=AT&FW1&C1&D3&K3&Q5%C1\N3S7=60S36=7S46=138S48=7S95=47S0=1&W
Speed=38400
 

ZOOM V.32 bis (V.42bis)

Init=AT&FW1&C1&D3&K3&Q9%C1\N3S7=60S36=7S95=47S0=1&W
Speed=38400
 

Zyxel U-1496 (V.42bis)

Init=AT&FX6&B1&C1&D2&N0&K4&H3S7=60S0=1&W
Speed=57600
 

 


Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

© 2001–2009 Cisco Systems, Inc. All rights reserved.