This TS specifies a profile of AT commands and recommends that this profile be used for controlling Mobile Equipment (ME) functions and GSM network services from a Terminal Equipment (TE) through Terminal Adaptor (TA). The command prefix +C is reserved for Digital Cellular in ITU T Recommendation V.25ter.
This TS has also the syntax details used to construct these extended GSM commands. Commands from ITU T Recommendation V.25ter and existing digital cellular standards (TIA IS 99 and TIA IS 135) are used whenever applicable. Some of the new commands are defined in such a way that they can be easily applied to ME of networks other than GSM. ITU T T.31 and T.32 fax AT commands may be used for GSM fax transmission from TE. GSM Short Message Service AT commands are defined in TS 07.05
. GPRS AT commands are defined in clause 10 of this TS.
This TS assumes an abstract architecture comprising a TE (e.g. a computer) and a ME interfaced by a TA. The span of control of the defined commands should allow to handle any physical implementation that this abstract architecture may lead to:
TA, ME and TE as three separate entities;
TA integrated under the ME cover, and the TE implemented as a separate entity;
TA integrated under the TE cover, and the ME implemented as a separate entity;
TA and ME integrated under the TE cover as a single entity.