VoiBRIDGE / VoxiPlus INSTALLATION MANNUAL
© 2008 TOPEX S.A.
page
46
APPENDIX 2 – AT commands
AT Command
Purpose
Response
AT
Allows the user to check the
functionality of the GSM
module
Should be "OK" in case of success:
AT+CPIN?
The GSM module is
interrogating about pin code.
This is a useful method to
check if a SIM card is plugged
in a GSM module.
- ERROR - there is no SIM installed
or there is another error;
-
READY - if no PIN code is required;
-
SIM PIN - the SIM is waiting for PIN
code;
- SIM PUK - the SIM is waiting for
PUK code
AT+CREG?
This AT command is used to
check if the module is
registered within the GSM
network.
The response is:
+CREG:<n>,<stat>,"xxxx", "xxxx"
where <stat> can be:
- stat = 0 - the module is not
registered and does not try to
register to a GSM operator;
- stat = 1 - the module is registered
within a GSM network;
- stat = 2 - the module is not
registered but is trying to register to
a GSM operator;
- stat = 3 - the registration is not
allowed;
-
stat = 4 – unknown;
- stat = 5 - the module is registered
and he has roaming.
AT+CLIR=<n>
where n=0 for default,
where n=1 for not sending
the identity and n=2 to
allow the sending the
identity
This command is
used to
enable or disable the sending
of the identity (caller ID)
The module is responding with "OK"
with a delay that depends upon the
loading of the GSM network. Until the
response is waiting an additional AT
command must not be sent to the
module.
AT+CLIR?
To check the settings for
identity
+CLIR:1,4 - identity not sent
+CLIR:2,4 - the identity is sent
+CLIR:0,4 - default value
AT+CLIP=<n>
where n=0 for not
displaying the identity of
the calling part and n=1 to
allow displaying of the
calling part identity
To display or to not display the
identity of the calling part in
case of a call through the
monitored GSM port
The module should be responding with
"OK", like this:
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