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TC63_ATC_V00.490

Page 78 of 501

5/24/05

Confidential / Draft - Do not copy

 returns an extended error report regarding the reason of the last 

• call release
• failure to set up a call (both mobile originated or terminated)
• failure to modify a call by using Supplementary Services 
• failed attempt to activate, register, query, deactivate or deregister a Supplementary Service 
• unsuccessful GPRS attach or unsuccessful PDP context activation 
• GPRS detach or PDP context deactivation 
The release cause report is presented in numeric format. Default output in case of a none-error-situation is

+CEER: 0,0,0. A description associated with each number can be found in the tables given in the following sub-

clauses and the relevant GSM specifications. 

The first parameter 

 serves to locate the other two parameters. Depending on the failure or

release cause either 

 or 

 are applicable, i.e. if 

≠ 0, then 

Vice versa, if 

 = 0, then 

 may be 

≠ 0. 

 is not available for data calls, please use 

=1 instead. 

Location ID as number code. Location IDs are listed in Section 

. Each ID is related with another table that contains a list of 

Reason for last call release as number code. The number codes are listed in several tables, sorted by different

categories in the following subclauses. The tables can be found proceeding from the Location ID given in Sec-

Release cause for last Supplementary Service call (listed in Section 

) or last call related use of a Supplementary Service (listed in Section SIEMENS release cause

for Call-related Supplementary Services (CRSS)). 

Test Command

AT+CEER=?

Response(s)

OK

ERROR

+CME ERROR

Exec Command

AT+CEER

Response(s)

OK

ERROR

+CME ERROR

Reference(s)

PIN

ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge

4

Last

GSM 07.07

%

%

%

%

%

%

%

!

%

!

<locationID>

(num)

<reason>

(num)

<ssRelease>

(num)