User guide

2
Getting started, and understanding how the analog modem in the CDS-9022A
CDMA and Analog Modem works.
This User Guide is an addendum to the CDS-9020 User Guide, and assumes the
reader has a basic understanding of Data Communications Equipment (DCE) and
Data Terminal Equipment (DTE) products.
The Basics
The standard landline modem is analog to analog via your local telephone company.
When switching from a non-CDMA network to an Analog-only network, the call will
be dropped if you are moving.
The CDS-9022A comes preprogrammed with a Cellular default string for a V.32
connection using a Conexant/Rockwell V.34 chipset.
The CDS-9022A default AT-STRING AT&F;+MS=V32,1, 1200, 9600,1200,9600;-
SEC=1,12;\N2;)M1;X0&W is best for fixed sites and stationary units, and works best
with a host modem that uses a Conexant\Rockwell Chip Set.
Suggested AT-String for a V.22 Analog Connection
AT&F+MS=V22,1,1200,2400,1200,2400;\N2;X0;&W
The CDS-90xx product lines all default to CDMA if there is CDMA coverage in the
area.
CDS-9022A Setup Steps and AT-Commands
The following are extended AT-Commands for the CDS-9022 used in its setup.
To talk to the Analog modem when you are in CDMA mode you need to TYPE *AT
<enter> (Note: in most terminal programs the * command will not echo)
Example 1
ATI3 <enter> (note there is no asterisk)
ERROR
This command tells you that you are talking to the CDMA modem.
Example 2
*ATI3 <enter>
V3.500-V34_2M_DLP
This response tells you that you are communicating with the Analog Modem. By
using the asterisk key, <shift> 8, at the beginning of the command, the Analog
modem will power up when you are in a CDMA area. If the unit is already getting an
analog signal it will default to the Analog modem. If you are in a CDMA area the (*)