User guide

Developers guidelines | AT commands
105 June 2010
AT+CREG Network registration (ver. 2)
3 Packet Access (synchronous). Not supported
4 Voice
5 Fax
6–127 All other values below 128 are reserved by GSM
07.07. Not supported
<itc>: Not supported
<itc> Description
0 3.1 kHz. Not supported
1 UDI. Not supported
Description: Controls the presentation of an unsolicited result code +CREG: <stat>
when <n>=1 and there is a change in the ME network registration status or
code +CREG: <stat>[,<lac>,<ci>] when <n>=2 and there is a change of the
network cell.
Read command returns the status of result code presentation and an inte-
ger <stat>, which shows whether the network has currently indicated the
registration of the ME. Location information elements <lac> and <ci> are
returned only when <n>=2 and ME is registered in the network.
Set command: AT+CREG=[<n>]
Read command: AT+CREG?
Read command
response: +CREG: <n>,<stat>[,<lac>,<ci>]
Test command: AT+CREG=? Shows if the command is supported.
Test command
response: +CREG: (list of supported <n>s)
Parameters:
<n>:
<n> Description
0 Disable network registration unsolicited result code.
Default value
1 Enable network registration unsolicited result code,
+CREG: <stat>
2 Enable network registration and location
information unsolicited result code, +CREG:
<stat>[,<lac>,<ci>]
<stat>:
<stat> Description
0 Not registered, the phone is not currently searching
a new operator to register to
1 Registered, home network
<service> Description