Siemens Mux_guide_v06 manual Term and abbreviations, Abbreviation Description

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Multiplexer User's Guide

Confidential / Released

s

mobile

1.3 Term and abbreviations

Abbreviation

Description

 

 

CSD

Circuit Switched Data

 

 

CTS

Clear to Send

 

 

DCD

Data Carrier Detect

 

 

DLCI

Data Link Control Identifier

 

 

DSB

Developer Support Box

 

 

DSR

Data Set Ready

 

 

DTR

Data Terminal Ready

 

 

FC

Flow Control

 

 

FFC

Flat Flex Cable

 

 

GPRS

General Packet Radio Service

 

 

GSM

Global System of Mobile Communication

 

 

IEI

Information Element Identifier

 

 

IP

Internet Protocol

 

 

MO

Mobile originated

 

 

MP

Multiplexer Protocol

 

 

MS

Mobile Station

 

 

MSDN

Microsoft Developer Network

 

 

MT

Mobile terminated

 

 

MUX

Multiplexer

 

 

OS

Operating System

 

 

PC

Personal Computer

 

 

PSC

Power saving control

 

 

RTS

Request to Send

 

 

TE

Terminal Equipment

 

 

UART

Universal Asynchronous Receiver Transmitter

 

 

Mux_guide_v06

Page 8 of 36

30.06.2004

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Contents Version DocID Muxguidev06 Siemens Cellular EnginesDocument Name Multiplexer Users Guide Multiplexer Users GuideJune 30 Muxguidev06Contents Tables Multiplexer protocol version controlChapter What is new Document historyIntroduction Supported products and related documents ReferencesTerm and abbreviations Abbreviation DescriptionMultiplexer protocol an overview Product concept and architectureVirtual channels and AT commands Characteristics Integrating multiplexer into the customer applicationBasic requirements RestrictionsFunctions without channel dependencies Timing conditions Multiplexer control and signaling lines Flow controlLogical flow control RTS/CTS on the physical channelsRTS/CTS on the logical channels COM M COM N COM P RTS/CTSEscape sequence Power savingBandwidth of logical channels Data link layer Structure of the multiplexer protocolIntroduction of the multiplexer protocol Flag sequence Address fieldControl field Frame TypeLength indicator Information fieldFrame checking sequence field FCS BitState diagrams Relationship between the customer µC and the GSM engine µC Serial Interface Customer GSM engine AT+CMUXSerial interface Customer µCCustomer EngineGSM engine ResponderClose-down procedure DLC releaseMultiplexer control channel Type fieldLength field Test command TestMultiplexer close down CLD Modem status command MSC Break signal optional Bit Not supported Power saving control PSC Commands Bit DescriptionType Bit Value octet Length=1 BitNon-supported command response NSC Value octet Bit Command TypeNon-supported command No Value octet Length=0Customer GSM engine µC AT+CMUXMultiplexer protocol version control IntroductionModem status command MSC Signals Break Signals Octet Optional Command BitSignals Bit Multiplexer protocol versionsTroubleshooting Implementing version controlCoding of TestCommand message Example of TestCommand message