Cisco IP Telephony Troubleshooting Guide for Cisco CallManager Release 3.0(1)

16:05:45.140 CCMStationD - stationOutputOpenReceiveChannel tcpHandle=0x4fbbc30 myIP: e74610ac (172.16.70.231)

16:05:45.140 CCMStationD - ConferenceID: 0 msecPacketSize: 20 compressionType:(4)Media_Payload_G711Ulaw64k

Similarly, Cisco CallManager provides information to the called party (1000).

16:05:45.140 CCMStationD - stationOutputOpenReceiveChannel tcpHandle=0x4fbb150 myIP: e64610ac (172.16.70.230)

16:05:45.140 CCMStationD - ConferenceID: 0 msecPacketSize: 20 compressionType:(4)Media_Payload_G711Ulaw64k

Cisco CallManager has received the acknowledgment message from called party for establishing the open channel for RTP stream, as well as the IP address of the called party. This message is to inform the Cisco CallManager of two pieces of information about the Skinny Station. First, it contains the status of the open action. Second, it contains the receive port address and number for transmission to the remote end. The IP address of the transmitter (calling part) of the RTP stream is ipAddr, and PortNumber is the IP port number of the RTP stream transmitter (calling party).

16:05:45.265 CCMStationInit - InboundStim - StationOpenReceiveChannelAckID tcpHandle=0x4fbb150, Status=0, IpAddr=0xe64610ac, Port=17054, PartyID=2

The following messages are used by Cisco CallManager to order the station to begin transmitting the audio stream to the indicated remote Cisco IP Phone’s IP address and port number.

16:05:45.265 CCMStationD - stationOutputStartMediaTransmission tcpHandle=0x4fbbc30 myIP: e74610ac (172.16.70.231)

16:05:45.265 CCMStationD - RemoteIpAddr: e64610ac (172.16.70.230) RemoteRtpPortNumber: 17054

msecPacketSize: 20 compressionType:(4)Media_Payload_G711Ulaw64k

In the following traces, the previously explained messages are sent to the called party. These messages are followed by the messages indicating the RTP media stream has been started between the called and calling party.

16:05:45.312 CCMStationD - stationOutputStartMediaTransmission tcpHandle=0x4fbb150 myIP: e64610ac (172.16.70.230)

16:05:45.328 CCMStationD - RemoteIpAddr: e74610ac (172.16.70.231) RemoteRtpPortNumber: 18448

msecPacketSize: 20 compressionType:(4)Media_Payload_G711Ulaw64k

16:05:46.203 CCMStationInit - InboundStim - OnHookMessageID tcpHandle=0x4fbbc30

The calling party’s Cisco IP Phone finally goes on-hook, which terminates all the control messages between the Skinny Station and Cisco CallManager as well as the RTP stream between Skinny Stations.

16:05:46.203 CCMStationInit - InboundStim - OnHookMessageID tcpHandle=0x4fbbc30

© 2000 Cisco Systems, Inc.

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Cisco Systems 30 VIP manual Cisco Systems, Inc

30 VIP specifications

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