05 H323速成 - 图文(6)

H323和SIP协议快速入门手册

Calling party number

Information element: Calling party number Length: 4

Type of number: National number

Numbering plan: E.164 ISDN/telephony numbering Number: 302 Called party number

Information element: Called party number Length: 5

Type of number: National number

Numbering plan: E.164 ISDN/telephony numbering Number: 2105 User-user

Information element: User-user Length: 262

Protocol discriminator: X.208 and X.209 coded user information ITU-T Recommendation H.225.0 h323_uu_pdu (H323-UU-PDU) h323_message_body (setup) setup

protocolIdentifier: 0.0.8.2250.0.3 h245Address (ipAddress) ipAddress

ip: 172.16.195.154 (172.16.195.154) port: 1038

sourceAddress (AliasAddress) Item 0 (h323_ID) h323_ID: 1012 Item 1 (h323_ID)

h323_ID: 00502d002d4e Item 2 (e164) e164: 302

sourceInfo (EndpointType)

destinationAddress (AliasAddress) Item 0 (e164) e164: 2105

destCallSignalAddress (ipAddress) ipAddress

ip: XUHAO_TEST (172.16.195.246) port: 1720

sourceCallSignalAddress (ipAddress) ipAddress

ip: 172.16.195.154 (172.16.195.154)

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H323和SIP协议快速入门手册

port: 1037

callIdentifier (CallIdentifier)

guid: 02134FBC-5267-6AF4-5634-343434EF0000 fastStart 0 OpenLogicalChannel forwardLogicalChannelNumber: 1 forwardLogicalChannelParameters (OpenLogicalChannel-forwardLogicalChannelParameters) dataType (audioData) audioData g7231

maxAl_sduAudioFrames: 1 silenceSuppression: False

multiplexParameters (h2250LogicalChannelParameters) h2250LogicalChannelParameters sessionID: 1

mediaControlChannel (unicastAddress) unicastAddress iPAddress

network: 172.16.195.154 (172.16.195.154) tsapIdentifier: 30019 fastStart 1 OpenLogicalChannel forwardLogicalChannelNumber: 4762 forwardLogicalChannelParameters (OpenLogicalChannel-forwardLogicalChannelParameters) dataType (nullData) nullData: nullData multiplexParameters (none) none: none

reverseLogicalChannelParameters (OpenLogicalChannel-reverseLogicalChannelParameters) dataType (audioData) audioData g7231

maxAl_sduAudioFrames: 1 silenceSuppression: False

multiplexParameters (h2250LogicalChannelParameters) h2250LogicalChannelParameters sessionID: 1

mediaChannel (unicastAddress) unicastAddress iPAddress

network: 172.16.195.154 (172.16.195.154) tsapIdentifier: 30018 mediaControlChannel (unicastAddress)

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H323和SIP协议快速入门手册

unicastAddress iPAddress

network: 172.16.195.154 (172.16.195.154) tsapIdentifier: 30019 mediaWaitForConnect: False canOverlapSend: False multipleCalls: False maintainConnection: False h245Tunneling: True

user_data (H323-UserInformation-user-data) protocol_discriminator: 5 user_information: SETUP

Callproceeding/Alerting

这两个信号是被叫回给主叫的，看命令9、12、15、16，这两个命令很简单，几乎没什么内容。Callproceeding是告诉主叫被叫正在呼叫中，Alerting是被叫告诉主叫我正在振铃中，请等待。正常情况下，被叫会在Alerting中带上快速信道信息，但是我们的系统现在不支持在Alerting中返回快速信道信息，所以会把从被叫发来的Alerting中的快速信道信息扣下，在Connetc消息中再送给主叫。具体的包如下：

6. Q.931

Protocol discriminator: Q.931 Call reference value length: 2 Call reference value: EED2

Message type: CALL PROCEEDING (0x02) User-user

Information element: User-user Length: 40

Protocol discriminator: X.208 and X.209 coded user information ITU-T Recommendation H.225.0 h323_uu_pdu (H323-UU-PDU)

h323_message_body (callProceeding) callProceeding

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