Chapter 1 – Introduction
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I)
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Chapter 1 – Introduction
Scope of This Document
This document describes the AT-command based messages exchanged between an application and the Multi-Tech Systems,
Inc. products in order to manage GSM-related events or services.
Related Documents
This interface specification is based on the following recommendations:
[1] ETSI GSM 07.05: Digital cellular telecommunications system (Phase 2);
Use of DTE-DCE interface for Short Message Service (SMS) and Cell Broadcast Service (CBS)
[2] ETSI GSM 07.07: Digital cellular telecommunications system (Phase 2);
AT command set for GSM Mobile Equipment (ME)
[3] ITU-T Recommendation V.25 ter: Serial asynchronous automatic dialing and control
[4] ETSI GSM 03.40: Digital cellular telecommunications system (Phase 2);
Technical implementation of the Short Message Service (SMS) Point-to-Point (PP)
[5] ETSI GSM 03.38: Digital cellular telecommunications system (Phase 2);
Alphabets and language-specific information
[6] ETSI GSM 04.80: Digital cellular telecommunications system (Phase 2):
Mobile radio interface layer 3, Supplementary service specification, Formats and coding
Definitions
The words,
“Mobile Station” (MS)
or
“Mobile Equipment” (ME)
are used for mobile terminals supporting GSM services
.
Terminal Equipment (TE)
is the Man-Machine Interface of a GSM device (modem or handset). A
TE
can be a hanset
MMI or the AT Command interface.
A call from a GSM mobile station to the PSTN is called a
“mobile originated call” (MOC)
or “outgoing call”, and a call
from a fixed network to a GSM mobile station is called a
“mobile terminated call” (MTC)
or “incoming call”.
In this document, the word “product” refers to any Multi-Tech product supporting the AT commands interface.
