User manual

Go to ‘Edit-Preferences-Advanced-Proxies’ and select ‘Direct connection to the Internet’. Confirm,

Return to Browser screen and in the ‘Location’ box type in ‘www.siemens.com’, enter and enjoy

Internet access via your Siemens COMBISET GSM.

6 Using a Terminal Emulator

The Combiset can be driven from a from a terminal emulator with the use of AT commands. Emulator

applications normally runs independent from the modem installation settings under the ‘Control Panel’

and hence the user must again verify the following settings from within the emulator application.

Maximum Baud Rate: 9600 bps

Data bits: 8

Parity: None

Stop Bits: 1

Flow Control: Hardware (RTS/CTS)

COM Port: Must correlate to the physical serial port where the data cable is plugged in.

Emulation Type: ANSI

ASCII configuration: 7-bit ASCII format

Echo: Character echo may also be disabled (If required)

Please refer to the User Documentation of your terminal emulator application for indication on how to

set these parameters. If Windows HyperTerminal is used, then these settings can be found under the

menu ’File-Properties’.

Once these settings are verified, the data cable connected and the Combiset powered on, then type

‘AT↵’ and the Combiset should respond with ‘OK’. On receiving this message you have successfully

established a terminal session with the Combiset. Refer to the AT commands chapter on how to enter

the PIN number, verify signal strength, verify registration and setup and termination of a call.

7 AT Commands

The AT Command set are applicable to terminal emulator sessions. Hence refer to the previous

section to set up a terminal emulator for use with the Combiset.

This section describes the messages exchanged between an external application and the Combiset

GSM mobile terminal, based on AT commands in order to control incoming and outgoing calls.

The AT-commands are presented under the implementation subcategories for

- the voice call Teleservices,

- the data Teleservices and

- the short message Teleservices.

In the GSM vocabulary, a call from GSM mobile to the PSTN is named „mobile originated call“ or

„outgoing call“, and a call from fixed network to a GSM mobile is called „mobile terminated call“ or

incoming call“.