Siemens Mobile Phone Specifications download pdf (Page 15)

AT Command Set for L55 Platform 2003-11-21

\Q<n

Local flow control selection (DTE ↔ DCE); can be customized

<n> can take one of the following values:

0 Disable flow control

1 XON-XOFF software flow control

2 CTS only flow control

3 RTS/CTS flow control

\V[n]

Modem command

0 No /REL or /RLP appendix with the CONNECT message

1 /REL or /RLP appendix with the CONNECT message

Table 2-7: Commands supported according to Hayes standard

2.2.2 Command combinations to be avoided

It is possible to specify more than a single command in the command line at any one time; however,

not all command combinations will have the expected result. To ensure that responses to commands

will be displayed in the order expected, the following command combinations should be avoided:

• V25ter commands combined with FAX commands

• GSM 7.07 commands combined with Siemens-specific commands

• GSM 7.05 commands (SMS) specified stand-alone

2.3 AT commands and responses according to GSM 07.07 and

GSM 07.05

According to GSM, it is possible to execute an AT command in various forms, as follows:

Test command

AT+CXXX=?

The mobile phone or modem responds by sending the list

of parameters and value ranges; these can be set using the

corresponding Write command or by means of internal

processes

Read command

AT+CXXX?

This command displays the current value setting of the

parameter(s).

Write command

AT+CXXX=<...>

This command is used to set parameters that can be set.

Execute

command

AT+CXXX This command reads non-settable parameters which are

influenced by internal processes in the mobile phone or

modem

Table 2-8: Conventions applying to the presentation of AT commands

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 132 133

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Siemens Mobile Phone Specifications Page 15