Specifications
   AT command set for XX Siemens mobile phones and modems 
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 Document No.: A30880-A10-A001-XX-
D376 
 Revision: Master R75 
    Revision Date:  29. September.2004 
 141 
70 
ONLY RESTRICTED DIGITAL INFORMATION BEARER CAP. AVAIL. 
79 
SERVICE OR OPTION NOT IMPL. 
81 
INVALID TI  
87 
USER NOT MEMBER OF CUG  
88 
INCOMPATIBLE DESTINATION 
91 
INVALID TRANSIT NETWORK SELECTION  
95 
SEMANTICALLY INCORRECT MESSAGE 
96 
INVALID MANDATORY INFORMATION 
97 
MESSAGE TYPE NOT IMPLEMENTED  
98 
MESSAGE NOT COMP W. CC STATE  
99 
IE NOT IMPLMENTED  
100 
CONDITIONAL IE ERROR  
101 
MESSAGE NOT COMP W. CC STATE 
102 
RECOVERY ON TIMER EXPIRY 
111 
PROTOCOL ERROR, UNSPECIFIED 
127 
INTERWORKING, UNSPECIFIED 
Table 5-6: Call control return values issued by AT+CEER 
5.4  GPRS return values issued by AT+CEER 
Table 5-7 lists the GPRS return values issued by the AT+CEER command in the form <x>,<y>, where x 
indicates the type of the value returned and y denotes the reason why the call was terminated. Table 5-7 provides 
the values for the applications handled by AT+CEER (x values). For more detailed information on meaning of 
the y values see tables Table 5-8 through Table 5-13: 
Value Meaning 
48  GPRS Layer 3 Mobility Management (see section 5.4.1) 
50  GSM values of Session Manager (see section 5.4.2) 
51  Internal values of Session Manager (see section 5.4.3) 
241  Internal values of GAPI (see section 5.4.4) 
242  Internal values of Link Manager (see section 5.4.5) 
243  Internal values of IP stack (see section 5.4.6) 
Table 5-7 GPRS return values 
5.4.1  Return values issued by AT+CEER for GPRS Layer 3 Mobility Management 
Value Meaning 
2  IMSI is unknown in HLR 
3 MS is illegal 
6 ME is illegal 
7  GPRS services not allowed 
8  GPRS services not allowed in combination with non-GPRS services 
9  MS cannot be identified 
10 Implicit detachment 
11  PLMN not allowed 
12  Location area not allowed 
13  Roaming not allowed in current location area 
14  GPRS services not allowed in current PLMN 
16 MSC temporarily unreachable 










