Specifications

3GPP
3GPP TS 27.007 V6.3.0 (2003-
06)
7
Release 6
Foreword
This Technical Specification (TS) has been produced by the 3
rd
Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
1 Scope
The present document specifies a profile of AT commands and recommends that this profile be used for controlling
Mobile Termination (MT) functions and GSM/UMTS 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.250 [14]. The present document has also the syntax details used to construct these extended GSM/UMTS commands.
Commands from ITU-T Recommendation V.250 [14] and existing digital cellular standards (TIA IS-99 [15] and TIA
IS-135 [16]) are used whenever applicable. Some of the new commands are defined such way that they can be easily
applied to MT of networks other than GSM/UMTS. ITU-T T.31 [11] and T.32 [12] fax AT commands may be used for
GSM/UMTS fax transmission from TE. GSM/UMTS Short Message Service AT commands are defined in 3GPP TS
27.005 [24]. GPRS AT commands are defined in clause 10 of this specification. The present document assumes an
abstract architecture comprising a TE (e.g. a computer) and a MT interfaced by a TA (see figure 1). The span of control
of the defined commands should allow to handle any physical implementation that this abstract architecture may lead
to:
- TA, MT and TE as three separate entities;
- TA integrated under the MT cover, and the TE implemented as a separate entity;
- TA integrated under the TE cover, and the MT implemented as a separate entity;
- TA and MT integrated under the TE cover as a single entity.
The commands described in the present document may be observed on the link between the TE and the TA. However,
most of the commands retrieve information about the MT, not about the TA.
TE TA MT
AT cmds
responses
MT control
MT status
USER & APPLICATIONS NETWORK
network messages