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     
  6 
[9]  GSM 04.11: "Digital cellular telecommunication system (Phase 2+); Point-to-Point (PP) Short 
Message Service (SMS) support on mobile radio interface". 
[10] GSM 05.08: "Digital cellular telecommunication system (Phase 2+); Radio subsystem link control". 
[11] GSM 11.11: Digital cellular telecommunications system (Phase 2+); Specification of the Subscriber 
Identity Module - Mobile Equipment (SIM-ME) 
[12]  
[13] 3GPP TS 24.008: "3rd Generation Partnership Project; Mobile Radio Interface Layer 3 
specification; Core Network Protocols-Stage 3". 
[14] 3GPP TS27.005: "Digital cellular telecommunication system (Phase 2+); Radio transmission and 
reception". 
[15] 3GPP S 27.007: "Digital cellular telecommunications system (Phase 2+);AT command set for GSM 
Mobile Equipment (ME) 
[16] ITU-T Draft new Recommendation V.250 “Serial asynchronous automatic dialling and control” 
[17] ITU-T Recommendation T.31: "Asynchronous facsimile DCE control, service class 1" 
[18] ITU-T Recommendation T.32: "Asynchronous facsimile DCE control, service class 2" 
[19] Hands-free Profile Adopted Version 1.0, 2003-04-29, by Bluetooth SIG Car Working Group; Doc 
no. CAR_x_SPEC/V1.0) 
[20] TR29.2: Standards Proposal No. 2388, Proposed New Standard “Asynchronous Facsimile DCE 
Control Standard” (if approved, to be published as EIA/TIA-592), October 1990 
[21] V29: 9600 bits per second modem standardized for use on point-to-point 4-wire leased telephone-
type circuits 
[22] ITU-T Draft new Recommendation V27ter: 4800/2400 bits per second modem standardized for use 
in the general switched telephone network 
2  Software interface 
2.1  Overview of the supported AT command set 
This section provides overviews of the supported sets of AT commands, separate for each type of command set. 
Table 2-1 lists all the supported 3GPP TS 27.007 AT commands in alphabetical order, and indicates the type of 
command as defined in the 3GPP TS 27.007 standard: 
27.007 
command 
Function  Type of command  Page 
AT+CACM  Accumulated call meter  Mobile equipment 
control 
35 
AT+CALM  Alert sound mode  Mobile equipment 
control 
35 
AT+CAMM  Accumulated call meter maximum  Mobile  equipment 
control 
35 
AT+CAOC  Advice of charge  Network service  23 
AT+CBC 
Battery charge 
Mobile equipment 
control 
36 
AT+CBST  Select bearer service type  Modem command  76 
AT+CCFC  Call forwarding number and conditions  Network service  23 
AT+CCLK Clock  Mobile equipment 
control 
36 
AT+CCWA Call waiting  Network service  24 










