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Manuel d’utilisation Siemens Mux_guide_v06

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  • Siemens Mux_guide_v06 - page 1

    User’s Guide Multiplexer User's Guide Siemens Cellular Engines Version: 06 DocID: Mux_guide_v06 ...

  • Siemens Mux_guide_v06 - page 2

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 2 of 36 30.06.2004 Document Name: Multiplexer User's Guide Version: 06 Date: June 30, 2004 DocId: Mux_guide_v06 Status: Confidential / Released General notes Product is deemed accepted by Recipient and is provided without interface to Recipient’s products. ...

  • Siemens Mux_guide_v06 - page 3

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 3 of 36 30.06.2004 Contents 0 Document history.......................................................................................................... 5 1 Introduction ............................................................................................. ...

  • Siemens Mux_guide_v06 - page 4

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 4 of 36 30.06.2004 5 Multiplexer protocol version control ......................................................................... 33 5.1 Introduction .......................................................................................................... 33 5 ...

  • Siemens Mux_guide_v06 - page 5

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 5 of 36 30.06.2004 0 Document history This chapter reports modifications and improv ements over previous versions of this document. Preceding document: “Multiplexer User's Guide” Version 05 New document: “Multiplexer User's Guide” Version 06 Cha ...

  • Siemens Mux_guide_v06 - page 6

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 6 of 36 30.06.2004 1 Introduction Siemens GSM engines support the basic option of the multiplexer according to the ETSI TS 101 369, GSM 07.10 Multiplexer Protocol. This allows a mobile to run a triple session over a serial link interface. Outside the GSM engine, ...

  • Siemens Mux_guide_v06 - page 7

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 7 of 36 30.06.2004 1.1 Supported products and related documents Supported products • AC43 • AC45 • MC35i • MC35i Terminal • MC39i • MC45 • MC46 • MC388 • MC5x • TC35i • TC35i Terminal • TC45 • XT55 Related documents [1] Hardware Interfac ...

  • Siemens Mux_guide_v06 - page 8

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 8 of 36 30.06.2004 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 F ...

  • Siemens Mux_guide_v06 - page 9

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 9 of 36 30.06.2004 2 Multiplexer protocol – an overview 2.1 Product concept and architecture The multiplexer mode enables one serial interface to transmit data to three different custo- mer applications. This is achieved by providing three virtual channels usin ...

  • Siemens Mux_guide_v06 - page 10

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 10 of 36 30.06.2004 2.2 Virtual channels and AT commands Please note that a cellular engine designed for multiplex operation does not include three different devices. Only one single air interface (RF part) is available. As mentioned before the multiplexer enable ...

  • Siemens Mux_guide_v06 - page 11

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 11 of 36 30.06.2004 3 Integrating multiplexer into the customer application When designing a multiplexer application, you can create your own sources or take advantage of the sources delivered upon reques t by Siemens. The Siemens sources are packed in a *.zip fi ...

  • Siemens Mux_guide_v06 - page 12

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 12 of 36 30.06.2004 3.1.3 Dependencies between multiplexer channels and restrictions of use When using the following functions, be aware of possible dependencies between the different channels. One way of avoiding problems may be to dedicate certain commands/feat ...

  • Siemens Mux_guide_v06 - page 13

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 13 of 36 30.06.2004 3.1.5 Timing conditions Switching on the multiplexer with AT+CMUX=0 causes a 5s timer to start. If the multiplexer control channel is not established within this time, the module returns to “normal AT command mode” without multiplexer. Thi ...

  • Siemens Mux_guide_v06 - page 14

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 14 of 36 30.06.2004 3.2 Multiplexer control and signaling lines The following chapter covers all information you need to develop and set up a virtual driver. Differences and restrictions in comparison to the unframed module are pointed out. 3.2.1 Flow control Log ...

  • Siemens Mux_guide_v06 - page 15

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 15 of 36 30.06.2004 RTS/CTS on the logical channels The customer application needs to regulate the data flow according to the logical flow control. The implementation of the WinMux 2k is a good example. It maps the 3 decoded channels to 3 serial interfaces as wel ...

  • Siemens Mux_guide_v06 - page 16

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 16 of 36 30.06.2004 3.2.2 Escape sequence When the multiplexer protocol is active only coded data is transmitted over the UART. The coding includes a header and a checksum. Therefore, the direct parsing of this sequence is not possible. An escape might be undetec ...

  • Siemens Mux_guide_v06 - page 17

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 17 of 36 30.06.2004 Addre ss 1 Octet Control 1 Octet Flag 1 Octet 0xF9 DLCI DLCI: Data Link Connection Identifier C/R: Command / Response EA: extension bit; EA = 1 Frame ty pe: SABM Set Asynchr onous Balanced Mode UA Unnumbered Acknowledgement DM Disconnected Mod ...

  • Siemens Mux_guide_v06 - page 18

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 18 of 36 30.06.2004 4.2.1 Flag sequence A flag sequence is a specific bit pattern (usually 11111001; hexadecimal: 0xF9) used to mark the beginning and the end of a frame of data. Each frame begins and ends with a flag sequence. Only one flag sequence occurs betwe ...

  • Siemens Mux_guide_v06 - page 19

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 19 of 36 30.06.2004 4.2.3 Control field The control field contains control information to define the frame. Frame Type 1 2 3 4 5 6 7 8 SABM (set asynchronous balanced mode) 1 1 1 1 P/F 1 0 0 UA (unnumbered acknowledgement) 1 1 0 0 P/F 1 1 0 DM (disconnected mode) ...

  • Siemens Mux_guide_v06 - page 20

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 20 of 36 30.06.2004 4.2.4 Length indicator The length indicator specifies the length of the following information field. As the maximum frame size N1 is 98 bytes and cannot be changed the E/A bit is always 1. The setting E/A = 0 defined in GSM 07.10 for a frame s ...

  • Siemens Mux_guide_v06 - page 21

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 21 of 36 30.06.2004 4.3 State diagrams The multiplexer protocol is based on two state machines (see Figure 4). One state machine initiates the setup of the logical channels, the other one responds to the requests. The GSM engine can only respond to requests. A hi ...

  • Siemens Mux_guide_v06 - page 22

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 22 of 36 30.06.2004 Figure 4: Relationship between the customer µC and the GSM engine µC DI S- CONNECT ED DI S- CONNECTED- NEGOT I AT I ON CONNECT ED CLOSED- DOW N St a r t Up DLC Establ i shment Close Down Close Down Cl ose Do wn DLC parameter negoti ati on DL ...

  • Siemens Mux_guide_v06 - page 23

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 23 of 36 30.06.2004 Cus t omer µC GSM e n gi n e µC Clos ed Dow n Cl o se d Do wn Request St art Up ResponseSt ar t Up Con f i r mS t ar t Up In d ica ti o nS ta rtU p Dis connec te d Dis connec t ed Ser i a l inte rfa c e Start Up "AT+CM UX" Connect ...

  • Siemens Mux_guide_v06 - page 24

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 24 of 36 30.06.2004 C ustom er µC G SM engi ne µC Dis connect ed Di sc onnect ed Ser i a l i nt e r f a ce DLC Release Connect ed Connect ed Request DI SC I ndi cat i o nD I SC Res p on s eUA Con f i r mUA Re quest C l oseDo w n I ndi cat i onCl oseDow n R e sp ...

  • Siemens Mux_guide_v06 - page 25

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 25 of 36 30.06.2004 4.3.1 Start-up procedure The only approach to activate the multiplexer protocol is entering the appropriate AT command AT+CMUX=0. This enables the multiplexer control channel. The next step is to set up the multiplexer control channel as descr ...

  • Siemens Mux_guide_v06 - page 26

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 26 of 36 30.06.2004 4.3.4 DLC release No provision is made to repeat the request if no response is received. Customer µC GSM engine DISC: P = 1 UA: F = 1 DM : F = 1 respondi ng s t ati on i s al ready disconnect ed Figure 9: DLC release 4.3.5 Close-down procedur ...

  • Siemens Mux_guide_v06 - page 27

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 27 of 36 30.06.2004 Length field: Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 EA L1 L2 L3 L4 L5 L6 L7 EA bit: Extension bit. In t he last octet of the sequence the EA bit = 1, otherw ise = 0. If there is only one octet, EA bit = 1 is set. L-bits: Number of va ...

  • Siemens Mux_guide_v06 - page 28

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 28 of 36 30.06.2004 4.3.9 Modem status command (MSC) The Modem Status Command is used for software flow control. Comman d 1 octet Length 1 octet DLCI 1 octet V.24 signals 1 octet Break Signals (optional) 1 octet Command: Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 ...

  • Siemens Mux_guide_v06 - page 29

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 29 of 36 30.06.2004 Note: The mappings are valid for version 3 and an MSC request only. Descriptions of all other versions are available in Chapter 5. The response to any MSC must be always the same data already sent. Please keep in mind that it is impossible to ...

  • Siemens Mux_guide_v06 - page 30

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 30 of 36 30.06.2004 4.3.10 Power saving control (PSC) The power saving control message uses the following type field octet: Type: Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 1 C/R 0 0 0 0 1 0 C/R bit: Indicates whether the sequence is a command or a response. ...

  • Siemens Mux_guide_v06 - page 31

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 31 of 36 30.06.2004 No Value octet (Length=0) Switches into SLEEP mode, like AT+CFUN=0 Note: According to the GSM 07.10 standard PSC supports no value octets. The optional value octet was added to increase flexibility. Developed as a substitute to the AT+CFUN com ...

  • Siemens Mux_guide_v06 - page 32

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 32 of 36 30.06.2004 4.4 Example: Establishing logical channels without parameter negotiation • Send AT+CMUX=0; wait for the response • Send Request SABM for DLCI = 0; wait for the response • Send Request SABM for all requested DLCIs; wait for the response A ...

  • Siemens Mux_guide_v06 - page 33

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 33 of 36 30.06.2004 5 Multiplexer protocol version control 5.1 Introduction The multiplexer protocol offers a version control to ensure that TE and MS support the same extent of functionality and to maintain upward and downward compatibility when later firmware v ...

  • Siemens Mux_guide_v06 - page 34

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 34 of 36 30.06.2004 5.2 Multiplexer protocol versions This section summarizes the differences of the existing multiplexer protocol versions. 1. No version check • No break signal is sent 2. First version including the version check • Additional features: Tran ...

  • Siemens Mux_guide_v06 - page 35

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 35 of 36 30.06.2004 5.3 Implementing version control The TE initiates the version check by sending the Test command via the multiplexer control channel DLCI 0 (with TEMUX_Version). As specified in the GSM recommendation 07.10 (chapter 5.4.6.3.4) the opposite enti ...

  • Siemens Mux_guide_v06 - page 36

    Multiplexer User's Guide Confidential / Released s m o b i l e Mux_guide_v06 Page 36 of 36 30.06.2004 5.3.2 Coding of “TestCommand” message The coding of the multiplexer stack version is used specifically for SIEMENS equipment and is not defined in ETSI standards. The IEI values defined for the verification pattern of the “TestCommand” ...

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