AT Modem Commands - GSM

The AT command set for GSM mobile equipment is fully described in a document published by the European Telecommunications Standards Institute (ETSI). The information is to be found in European Telecommunication Standard ETS 300 642 (presently fourth edition March 1999).

Information contained in ETS 300 642 is copyright of ETSI and can not be reproduced here for legal reasons.

Readers are referred to the ETSI web site where a copy may be freely downloaded.