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     
  iv 
1  General information 
This document constitutes the manual reference to the AT command set supported by <master> 
Siemens mobile phones. 
1.2  Abbreviations and glossary 
The following abbreviations and terms are used throughout this specification: 
Abbreviation / Term  Meaning 
ALS Alternate Line Service 
CSD Circuit Switched Data 
CTS  Clear to send 
CUG  Closed User Gruop 
DCE  Data Carrier Equipment 
DSR  Data Set Ready 
DTE  Data Terminal Equipment 
DTR  Data Terminal Ready 
FDN Fixed dialling numbers 
GPP  Generation Partnership Project 
IMEI  Internatonal Mobile Station Equipment Identity 
IMSI  International Mobile Subscriber Identity 
ME Mobile Equipment 
PDU  Protocol Data Unit 
PIN  Personal Identification Number 
PPP Point-to-Point Protocol 
PUK  PIN Unblocking Key 
RLP  Radio Link Protocol 
RTS  Ready to send 
SIM  Subscriber Identity Module 
SNDCP  Subnetwork Dependency Convergence Protocol 
SWIM  Smart card that has both SIM and WIM applications 
TA Terminal Adapter 
TE Terminal Equipment 
UDI  Unrestricted Digital Information 
WIM  Wireless Identification Module 
1.3  Notational Conventions 
The following notational conventions apply throughout this manual: 
Convention Meaning 
Case sensitivity  Although the names of commands are not case-sensitive, cases should not be 
mixed. Either “AT” or “at” should be specified, but neither “aT” nor “At”. 
Throughout this manual, “AT” is used 
007  Leading zeroes in strings can be omitted 
Letters and digits 
Letters and digits in the Courier New font indicate parameter names and 
values 
abc 
Underlined
 parameter values indicate the recommended default setting of this 










