Siemens M1 - Manual (Page 31)

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gsm-m1-e.fm GSM M1 Module, English: A24859-N4000-A100-1-7677
Technical reference section
26.2.96
The AT&Yn command allows you to determine which user profile ("0" or "1") will be load-
ed at power-up.
Please note:
When the module is supplied, both user memories contain the factory configuration.
Regardless of how your active configuration profile is currently set up, the ATZn com-
mand allows you to reload your own user profile at any time. Any existing connection
is cleared down.
Special AT commands are used for controlling GSM-related functions of the GSM
Module M1 such as PIN entry, network selection and IMEI output and for controlling the
short message service. These commands start with AT+C and are specified in the Tech-
nical Specifications (TS) GSM 07.07 for the general part and GSM 07.05 for SMS from the
ETSI (European Telecommunications Standards Institute). Standardization is not yet com-
plete. Some of the commands implemented in the GSM Module M1 may still be
changed within the framework of the standardization process. For the purpose of future
compatibility, these commands are always prefixed by +CXX.
Example:
Enter: AT+CXXSN = ?
GSM module +CXXSN: 1=voice/FAX
The implementation of the AT+C commands for GSM-related functions of the GSM
Module M1 is based on TS GSM 07.07 Version 0.1.0.
AT&Yn - Configuration at power-up
AT&Yn [n=0,1]
Option Result
AT&Y0 The profile in user memory "0" will be loaded at power-up.
Factory configuration
AT&Y1 The profile in user memory "1" will be loaded at power-up.
ATZn - Load user profile
ATZn [n=0,1]
Option Result
ATZ0 Load user profile "0".
ATZ1 Load user profile "1".
AT+C commands for GSM