Siemens Multiplexer Mux_guide_v06 Manual de usuario descargar pdf (Pagina 4)

Multiplexer User's Guide

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Mux_guide_v06 Page 4 of 36 30.06.2004

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 ............................................................................................. 9

Figure 2: Logical flow control and RTS/CTS signaling behind the decoder ........................... 15

Figure 3: Data link layer .........................................................................................................17

Figure 4: Relationship between the customer µC and the GSM engine µC...........................22

Figure 5: MPI – Startup, DLC establishment and information transfer................................... 23

Figure 6: MP - DLC release and close down.......................................................................... 24

Figure 7: DLC establishment.................................................................................................. 25

Figure 8: Information transfer .................................................................................................25

Figure 9: DLC release ............................................................................................................26

Figure 10: Multiplexer control channel ................................................................................... 26

Figure 11: Modem status command (MSC) ...........................................................................28

Figure 12: Power Saving Control (PSC)................................................................................. 30

Figure 13: Establishing the multiplexer control channel and the logical channel ................... 32

Figure 14: MSC as used in version 3 ..................................................................................... 34

Tables

Table 1: Comparison of multiplexer channels ........................................................................ 10

Table 2: Address field.............................................................................................................18

Table 3: Assignment of the DLCI ........................................................................................... 18

Table 4: Use of the command/response bit............................................................................ 18

Table 5: Coding of the control field......................................................................................... 19

Table 6: Version differences for MSC .................................................................................... 34

Table 7: IEI coding .................................................................................................................36

Table 8: Coding of “TestCommand” (Example)...................................................................... 36

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Siemens Multiplexer Mux_guide_v06 Manual de usuario Pagina 4