Siemens Mux_guide_v06 manual Document history, Chapter What is new

Page 5

Multiplexer User's Guide

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This chapter reports modifications and improvements over previous versions of this document.

Preceding document: “Multiplexer User's Guide” Version 05

New document: “Multiplexer User's Guide” Version 06

Chapter

What is new

 

 

1.1Added further supported products.

3.1.1Added note about closing Multiplexer.

3.1.2Added note about maximum frame size N1.

4.2.4Second byte for frame size greater than 127 bytes is not supported.

4.3.5Corrected description of Close-down procedure.

5Corrected description of multiplexer version control.

5.3.3Corrected example.

Preceding document: “Multiplexer User's Guide” Version 04

New document: “Multiplexer User's Guide” Version 05

Chapter

What is new

 

 

1.1Added further supported products.

3.1.4Modified remark on AT&W.

3.1.6Added chapter “Operation of a second physical serial interface ASC1 (if applicable)”

Preceding document: “Multiplexer User's Guide” Version 03

New document: “Multiplexer User's Guide” Version 04

Chapter

What is new

 

 

1.1Added further supported products.

3 - 3.4 Restructured and revised all chapters.

3.1.2, 3.3, To control SLEEP mode use PSC messages rather than entering AT+CFUN=<n> 4.3.10

Mux_guide_v06

Page 5 of 36

30.06.2004

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Contents Siemens Cellular Engines Version DocID Muxguidev06Multiplexer Users Guide Document Name Multiplexer Users GuideJune 30 Muxguidev06Contents Multiplexer protocol version control TablesDocument history Chapter What is newIntroduction References Supported products and related documentsAbbreviation Description Term and abbreviationsProduct concept and architecture Multiplexer protocol an overviewVirtual channels and AT commands Integrating multiplexer into the customer application CharacteristicsBasic requirements RestrictionsFunctions without channel dependencies Timing conditions Flow control Multiplexer control and signaling linesLogical flow control RTS/CTS on the physical channelsCOM M COM N COM P RTS/CTS RTS/CTS on the logical channelsEscape sequence Power savingBandwidth of logical channels Data link layer Structure of the multiplexer protocolIntroduction of the multiplexer protocol Address field Flag sequenceFrame Type Control fieldInformation field Length indicatorFrame checking sequence field FCS BitState diagrams Relationship between the customer µC and the GSM engine µC AT+CMUX Serial Interface Customer GSM engineCustomer µC Serial interfaceEngine CustomerGSM engine ResponderDLC release Close-down procedureMultiplexer control channel Type fieldLength field Test command TestMultiplexer close down CLD Modem status command MSC Break signal optional Bit Not supported Commands Bit Description Power saving control PSCType Bit Value octet Length=1 BitValue octet Bit Command Type Non-supported command response NSCNon-supported command No Value octet Length=0AT+CMUX Customer GSM engine µCIntroduction Multiplexer protocol version controlSignals Break Signals Octet Optional Command Bit Modem status command MSCSignals Bit Multiplexer protocol versionsImplementing version control TroubleshootingExample of TestCommand message Coding of TestCommand message