Specifications
   AT command set for XX Siemens mobile phones and modems 
__________________________________________________________________________________________ 
 Document No.: A30880-A10-A001-XX-
D376 
 Revision: Master R75 
    Revision Date:  29. September.2004 
 33 
AG
All outgoing barring services 
AI
BAIC (bar all incoming calls) 
AO
BAOC (bar all outgoing calls) 
IR
BIC-Roam (bar incoming calls when roaming outside the 
home country) 
OI
BOIC (bar outgoing international calls) 
OX
BOIC-exHC (bar outgoing international calls except to 
home country) 
PS
Phone locked to SIM (device code) 
P2
PIN2 
SC
SIM card (PIN) 
<pwdlength
> 
Password length 
Write command 
AT+CPWD=<fac>,<oldpwd>,<newpwd> 
Response:  
OK/ERROR/+CME ERROR 
Parameter:  
<fac
> 
See Test command 
<oldpwd> 
Existing password 
<newpwd
> 
New password 
Note 
PS 
Phone Code (device code) 
AT+CPWD=”PS”,,<newpwd> 
if no password has yet been entered 
AT+CPWD=”PS”,<oldpwd> 
to delete password 
AT+CREG
AT+CREG  Network registration 
Test command  Response:  
AT+CREG=? 
+CREG: (list of supported <n
>s) 
OK/ERROR/+CME ERROR 
Parameter 
<n
> 
0 
Suppresses the unexpected network status messages 
1 
Displays the unexpected network status messages 
2 
Enables unexpected network registration and location 
information messages 
Read command  Response: 
AT+CREG? 
+CREG: <n
>,<stat>[,<lac>,<ci>] 
OK/ERROR/+CME ERROR 
Parameter:  
<n
> 
See Test command 
<stat
>  0 
Not checked in, not seeking 
1 
Checked in 
2 
Not checked in, but seeking a network 
3 
Check-in denied by network 
4 
Unknown 
5 
Registered, roaming 
<lac
> 
Hexadecimal 2-byte string type of location area code 
<ci
> 
Hexadecimal 2-byte string type of cell ID 
Write command  Response:  
AT+CREG=<n> 
OK/ERROR/+CME ERROR 
Parameter 
 <n>  See Test command 
Unsolicited result code 










