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 
 51 
Write command 
AT+CGCMOD=[<cid>[,<cid>[,…]]]] 
Response 
OK/ERROR/+CME ERROR 
Parameter:  
<cid
> 
See Test command 
AT+CGDATA
AT+CGDATA  Enter data state 
Test command  Response:  
AT+CGDATA=? 
+CGDATA: (list of supported <L2P
>s) 
OK/ERROR/+CME ERROR 
Parameter: 
Layer 2 protocol to be used between the TE and MT 
<L2P
>  PPP 
Point-to-Point Protocol 
Write command 
AT+CGDATA=[<L2P> ,[<cid> [,<cid> [,…]]]] 
Response:  
CONNECT/ERROR/+CME ERROR 
Parameter:  
<L2P
> 
See Test command 
<cid
>  1 .. x 
numeric PDP Context Identifier 
(maximum value x returned by command 
AT+CGDCONT=?) 
AT+CGDCONT
AT+CGDCONT  Define PDP Context 
Test command  Response:  
AT+CGDCONT=? 
+CGDCONT: (range of supported <cid>s), <PDP_type>,,,(list of supported 
<d_comp>s), (list of supported <h_comp>s) [<CR><LF> 
+CGDCONT: (range of supported <cid>s), <PDP_type>,,,(list of supported 
<d_comp>s),(list of supported <h_comp>s)[...]] 
OK/ERROR/+CME ERROR 
Parameter:  
<cid
>  1 .. x 
numeric PDP Context Identifier 
<PDP_type
> 
string parameter of Packet Data Protocol type 
PPP 
Type PPT 
IP 
Type IP 
<d_comp
> 
numeric parameter that controls PDP data compression 
0 
off 
1 
on (manufacturer preferred compression) 
2 
V.42bis 
<h_comp
> 
numeric parameter that controls PDP header compression 
0 
off 
1 
on (manufacturer preferred compression) 
which is RFC1144 if it is available 
2 
RFC1144 (applicable for SNDCP only) 
3 
RFC2507 
Read command  Response:  










