• 參數(shù)資料
    型號(hào): PSB7110
    廠商: SIEMENS AG
    英文描述: Enhanced ISDN Data Access Controller ISAR
    中文描述: 增強(qiáng)綜合業(yè)務(wù)數(shù)字網(wǎng)的數(shù)據(jù)接入控制器專家組
    文件頁數(shù): 140/164頁
    文件大?。?/td> 1173K
    代理商: PSB7110
    _________________________________________________PSB 7110
    Siemens Aktiengesellschaft
    Page 140
    3.11.7
    HDLC Reception
    A host can control HDLC frame reception during a fax group 3 session by issuing the command
    CMD_FRH to the fax pump. HDLC reception is specified by the T.30 procedure during the exchange
    of control information. Some applications may alternatively implement HDLC framing directly, they
    would then use binary reception for the reception of their HDLC bit stream.
    AT+FRH=<MOD>
    Generate Command
    CMD_FRH
    (set parameter <MOD>)
    Event
    RSP_CONNECT
    Yes
    No
    Event
    RSP_FCERROR
    Yes
    No
    No
    Yes
    A
    Generate
    Continue
    Event
    LINE_RX_HDLC
    Yes
    No
    Event
    RSP_FCERROR
    Abort character
    from DTE
    Yes
    No
    No
    Yes
    A
    C
    Issue
    "Connect"
    Transfer data
    from fax pump to DTE
    No
    Yes
    No
    No
    Yes
    Abort character
    from DTE
    DU_FRAME_END
    seen
    NO_MORE_DATA
    flag seen
    Send
    <DLE><ETX>
    to DTE
    A
    D
    B
    Done
    Yes
    No
    Frame received
    correctly
    Issue
    "OK"
    Generate Command
    CMD_ESCAPE
    No
    Yes
    Same FRH
    command
    Different command
    C
    Abort character
    from DTE
    Send
    <DLE><ETX>
    to DTE
    Send
    <DLE><ETX>
    to DTE
    No
    Yes
    Yes
    Figure 24 HDLC reception
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