Sony Ericsson TT4031 (SE-GM29) - Manual (Page 21)

Owner’s Manual Rev 1.0 Page 21 of 21
setting up and controlling communications to and from the GSM
network;
configuring the modem to communicate across the RS232 serial
interface;
and obtaining GSM network status information.
For more detail on the AT commands supported by the TT4031 (SE-GM29)
see “Alphabetical Listing of AT Commands”.
2.4.8 Interfacing with the TT4031 (SE-GM29).
The TT4031 (SE-GM29) uses the following industry standard connectors to
interface with the external application and the GSM network;
RJ11 (plug-in power supply connector)
RJ9 (handset audio connector)
Integral SIM card reader
FME male (antenna connector)
Sub-D socket, 9 pin (RS232 serial port)