User guide

Suggested AT-STRING for the host modem calling a CDS-9022A Modem

for a V.32 connection

AT&F;+MS=V32,1,4800,9600,4800,9600;-SEC=1,12;)M1;\N5;&W <enter >

This is a CONEXANT chipset command. It is the fastest way to connect to the CDS-

9022 fixed or mobile units that have files bigger than 50K plus.

Note: In the past few years since Rockwell merged with CONEXANT, the AT-

STRING commands conform to the above. Older ROCKWELL/CONEXANT

chipset’s at-commands are as follows:

AT&F+MS=9,1,4800,9600)M1\N5-SEC=1,12&W <enter>

If your ROCKWELL/CONEXANT chipset does not accept these commands see your

manufacturers manual.

If you don’t have a CONEXANT chipset, see the following commands for other

manufactures chipsets:

Us Robotics COURIER V-EVERYTHING

AT&F1S54=192S56=192S58=33S34=7S26=16M2&W1 <enter>

For slower and more consistent analog connections, or if your CDS-9022 will be

mounted in a vehicle and running in mostly analog coverage areas, try entering the

following string on the CDS-9022 remote side:

AT&F;S37=5;+MS=V22,1,1200,1200,1200,1200;X0&C1;&W <enter>

Note: The CDS-9020 can only be set to one DCE rate. This command may slow

down your CDMA connection speed.

Local CDS-9022/9022A commands and setup

CDS-9020/22 default AT-String extended commands used to force the modem to

V.32 (+MS) and MMP10EC

= AT&F;+MS=V32,1, 1200, 9600,1200,9600;-SEC=1,12;\N2;)M1;&W

To query Modem default settings

Use the ? command examples

AT+MS?

+MS: V32,1,1200,9600,1200,9600

AT-SEC?

1,12