发送DTMF相关配置

在sip profile的配置里面:

  1. <param name="dtmf-type" value="info"/>
  2. or
  3. <param name="dtmf-type" value="rfc2833"/>
  4. or
  5. <param name="dtmf-type" value="none"/>

这个参数用于该profile对外协商的时候，可以提供的dtmf类型。

接收DTMF相关

  1. 上述event格式和被叫fs的dtmf模式(dtmf/info/inbound)无关，是由来电里的dtmf格式决定:
    1.1 如果inboud call的dtmf是rfc2833模式，则接收端的fs产生的Event-Name:DTMF
    1.2 如果inboud call的dtmf是info模式, 则接收端的fs产生的Event-Name:RECV_INFO
    1.3 如果inboud call的dtmf是inbound模式,则接收端fs产生的Event-Name: DTMF(和1.1的不同见上面示例)
  2. 在inband dtmf模式的时候，拨号计划要启动start_dtmf，才可以解析出dtmf信号

    DTMF相关事件

    通过info收到的dtmf

    Event-Name: RECV_INFO
    Core-UUID: fb33a974-82bd-11e9-9e45-b3355e160db7
    FreeSWITCH-Hostname: fstest
    FreeSWITCH-Switchname: fstest
    FreeSWITCH-IPv4: 172.17.0.9
    FreeSWITCH-IPv6: %3A%3A1
    Event-Date-Local: 2019-06-03%2016%3A37%3A11
    Event-Date-GMT: Mon,%2003%20Jun%202019%2008%3A37%3A11%20GMT
    Event-Date-Timestamp: 1559551031188496
    Event-Calling-File: sofia.c
    Event-Calling-Function: create_info_event
    Event-Calling-Line-Number: 9224
    Event-Sequence: 165591472
    SIP-Content-Type: application/dtmf-relay
    SIP-From-User: 0000000000
    SIP-From-Host: 172.17.0.11
    SIP-To-User: 18652003060
    SIP-To-Host: 172.17.0.9
    SIP-Contact-User: mod_sofia
    SIP-Contact-Host: 172.17.0.11
    Channel-State: CS_EXECUTE
    Channel-Call-State: EARLY
    Channel-State-Number: 4
    Channel-Name: sofia/internal1/0000000000%40172.17.0.11
    Unique-ID: c08fb2ca-85da-11e9-ae54-b3355e160db7
    Call-Direction: inbound
    Presence-Call-Direction: inbound
    Channel-HIT-Dialplan: true
    Channel-Presence-ID: 0000000000%40172.17.0.11
    Channel-Call-UUID: c08fb2ca-85da-11e9-ae54-b3355e160db7
    Answer-State: early
    Channel-Read-Codec-Name: PCMU
    Channel-Read-Codec-Rate: 8000
    Channel-Read-Codec-Bit-Rate: 64000
    Channel-Write-Codec-Name: PCMU
    Channel-Write-Codec-Rate: 8000
    Channel-Write-Codec-Bit-Rate: 64000
    Content-Length: 24
    Signal=9
    Duration=250

    通过2833收到的事件

    Event-Name: DTMF
    Channel-State: CS_EXCHANGE_MEDIA
    Channel-Call-State: ACTIVE
    Channel-State-Number: 5
    Channel-Name: sofia/external/18721861839
    Unique-ID: bb264dc6-85cb-11e9-99e8-8749f74e398f
    Call-Direction: outbound
    Presence-Call-Direction: outbound
    Channel-HIT-Dialplan: false
    Channel-Call-UUID: bb25f4ca-85cb-11e9-99de-8749f74e398f
    Answer-State: answered
    Channel-Read-Codec-Name: PCMA
    Channel-Read-Codec-Rate: 8000
    Channel-Read-Codec-Bit-Rate: 64000
    Channel-Write-Codec-Name: PCMA
    Channel-Write-Codec-Rate: 8000
    Channel-Write-Codec-Bit-Rate: 64000
    DTMF-Digit: 2
    DTMF-Duration: 640
    DTMF-Source: RTP

    通过inband收到的事件

    Event-Name: DTMF
    Core-UUID: fb33a974-82bd-11e9-9e45-b3355e160db7
    FreeSWITCH-Hostname: fstest
    FreeSWITCH-Switchname: fstest
    FreeSWITCH-IPv4: 172.17.0.9
    FreeSWITCH-IPv6: %3A%3A1
    Event-Date-Local: 2019-06-03%2018%3A24%3A58
    Event-Date-GMT: Mon,%2003%20Jun%202019%2010%3A24%3A58%20GMT
    Event-Date-Timestamp: 1559557498168495
    Event-Calling-File: switch_channel.c
    Event-Calling-Function: switch_channel_dequeue_dtmf
    Event-Calling-Line-Number: 660
    Event-Sequence: 165592741
    Channel-State: CS_EXECUTE
    Channel-Call-State: ACTIVE
    Channel-State-Number: 4
    Channel-Name: sofia/internal1/0000000000%40172.17.0.11
    Unique-ID: d015af74-85e9-11e9-aea5-b3355e160db7
    Call-Direction: inbound
    Presence-Call-Direction: inbound
    Channel-HIT-Dialplan: true
    Channel-Presence-ID: 0000000000%40172.17.0.11
    Channel-Call-UUID: d015af74-85e9-11e9-aea5-b3355e160db7
    Answer-State: answered
    Channel-Read-Codec-Name: PCMU
    Channel-Read-Codec-Rate: 8000
    DTMF-Digit: 3
    DTMF-Duration: 480
    DTMF-Source: INBAND_AUDIO