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TS 27.010CT3
Terminal Equipment to User Equipment (TE-UE)
Multiplexer Protocol

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V15.0.0 (PDF)  2018/06  52 p.
V14.0.0  2017/03  54 p.
V13.0.0  2015/12  54 p.
V12.0.0  2014/10  54 p.
V11.0.0  2012/09  54 p.
V10.0.0  2011/04  54 p.
V9.1.0  2011/01  54 p.
V8.1.0  2011/01  54 p.
V7.0.0  2007/06  54 p.
V6.0.0  2005/01  54 p.
V5.0.0  2002/06  54 p.
V4.2.0  2002/03  54 p.
V3.4.0  2002/03  54 p.
GSM Rel-98 v7.2.0  2002/03  54 p.
GSM Rel-97 v6.5.0  2002/03  54 p.

Rapporteur:  Mrs. Biondic, Nevenka

The multiplexer protocol described in the present document operates between an UE and a TE and allows a number of simultaneous sessions over a normal serial asynchronous interface. Each session consists of a stream of bytes transferring various kinds of data; for instance, voice, fax, data, SMS, CBS, phonebook maintenance, battery status, GPRS, USSD etc.
This permits, for example, SMS and CBS to be transferred to a TE when a data connection is in progress. Many other combinations are possible including digital voice. It is, for instance, possible to transfer digital voice in combination with SMS. The multiplexer allows a complete system to be partitioned in a flexible way between a UE and TE.
The scope of the present document is to define a multiplexing protocol between a UE and a TE. The multiplexing protocol can be used to send any data, for instance voice, SMS, USSD, fax etc.
This TS describes the protocol, but not the commands or data transported with it.

full Table of Contents for  TS 27.010  Word version:   15.0.0

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1  ScopeWord-p. 7
2  References
3  Abbreviations
4  Overview of Multiplexing SystemWord-p. 8
5  Non Error Recovery mode OptionsWord-p. 9
5.1  Service Interface Definition
5.2  Frame Structure
5.3  Frame TypesWord-p. 21
5.4  Procedures and States
5.5  Convergence LayersWord-p. 38
5.6  DLCI Values
5.7  System ParametersWord-p. 42
5.8  Start-up and close-down of multiplexerWord-p. 43
6  Error Recovery Mode Option
A  Advice to TE software implementersWord-p. 48
B  Explanatory notes on the CRC CalculationWord-p. 49
C  Change HistoryWord-p. 52

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