Multiplexer User's Guide

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5

Multiplexer protocol version control

33

 

5.1

Introduction

33

 

5.2

Multiplexer protocol versions

34

 

5.3

Implementing version control

35

 

 

5.3.1 Troubleshooting

35

 

 

5.3.2 Coding of “TestCommand” message

36

 

 

5.3.3 Example of “TestCommand” message

36

Figures

Figure 1: Multiplexer architecture

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Figure 2: Logical flow control and RTS/CTS signaling behind the decoder

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Figure 3: Data link layer

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Figure 4: Relationship between the customer µC and the GSM engine µC

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Figure 5: MPI – Startup, DLC establishment and information transfer

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Figure 6: MP - DLC release and close down

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Figure 7: DLC establishment

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Figure 8: Information transfer

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Figure 9: DLC release

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Figure 10: Multiplexer control channel

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Figure 11: Modem status command (MSC)

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Figure 12: Power Saving Control (PSC)

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Figure 13: Establishing the multiplexer control channel and the logical channel

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Figure 14: MSC as used in version 3

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Tables

Table 1: Comparison of multiplexer channels

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Table 2: Address field

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Table 3: Assignment of the DLCI

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Table 4: Use of the command/response bit

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Table 5: Coding of the control field

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Table 6: Version differences for MSC

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Table 7: IEI coding

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Table 8: Coding of “TestCommand” (Example)

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Mux_guide_v06

Page 4 of 36

30.06.2004

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Siemens Mux_guide_v06 manual Tables, Multiplexer protocol version control