User`s guide

Page 167
15 Modems and GSM modules
15.1 Asynchronous modems
MidJet GSM Text is developed using asynchronous modems of types
Ericsson V34DT and Multitech MT1932ZDXI. No change of the factory
configuration of these modems is required.
If you intend to use asynchronous connection type we recommend that you
use one of these, or a 100% compatible.
Other modems should be configured as follows:
Data correction On
Data compression Off
DSR control AT&S1&W0
Please observe that the DSR control setting must be configured by attaching
the modem to a PC with a terminal emulation program. It cannot be changed
using the modem initialisation function in the Communication description file.
15.2 Synchronous modems
IBM ECS modems for 2.400, 9.600 and 19.200 BPS were used for
development. No special configuration is required.
When communication via the service modem is used a X.32 access service
to the X.25 network is used. Verify with your GSM operator that support for
this is available.
15.3 GSM modules
MidJet GSM Text supports ETM 9200, 9300, 9350, Ericsson GM12, GM22,
Siemens A1, M1, TC35, TC35i and Digicom PocketGSM devices.