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

16:03:02.328 CCMMediaTerminationPointControl - stationOutputKeepAliveAck tcpHandle=4fa7dc0 16:03:02.328 CCMUnicastBridgeControl - stationOutputKeepAliveAck tcpHandle=4bf8a70 16:03:06.703 CCMStationInit - InboundStim - IpPortMessageID: 32715(0x7fcb) tcpHandle=0x4fbbc30 16:03:06.703 CCMStationD - stationOutputKeepAliveAck tcpHandle=0x4fbbc30

Cisco CallManager Intra-Cluster Call Flow Traces

The following SDI traces explore in detail the intra-cluster call flow. The Cisco IP Phones in the call flow can be identified by the directory number (dn), tcpHandle, and IP address. A

Cisco IP Phone (dn: 1001, tcpHandle: 0x4fbbc30, IP address: 172.16.70.231) located in Cluster 2 is calling another Cisco IP Phone in the same Cluster (dn=1000, tcpHandle= 0x4fbb150, IP address= 172.16.70.230). Remember that you can follow a device through the trace by looking at the TCP handle value, time stamp, or name of the device. The TCP handle value for the device remains the same until the device is rebooted or goes offline.

The following traces show that the Cisco IP Phone (1001) has gone off-hook. The trace below shows the unique messages, TCP handle, and the called number, which are displayed on the Cisco IP Phone. There is no calling number at this point, because the user has not tried to dial any digits. The information below is in the form of Skinny Station messages between the Cisco IP Phones and the Cisco CallManager.

16:05:41.625 CCMStationInit - InboundStim - OffHookMessageID tcpHandle=0x4fbbc30 16:05:41.625 CCMStationD - stationOutputDisplayText tcpHandle=0x4fbbc30, Display= 1001

The next trace shows Skinny Station messages going from Cisco CallManager to a

Cisco IP Phone. The first message is to turn on the lamp on the calling party’s Cisco IP Phone.

16:05:41.625 CCMStationD - stationOutputSetLamp stim: 9=Line instance=1 lampMode=LampOn tcpHandle=0x4fbbc30

The stationOutputCallState message is used by Cisco CallManager to notify the station of certain call related information.

16:05:41.625 CCMStationD - stationOutputCallState tcpHandle=0x4fbbc30

The stationOutputDisplayPromptStatus message is used by Cisco CallManager to cause a call- related prompt message to be displayed on the Cisco IP Phone.

16:05:41.625 CCMStationD - stationOutputDisplayPromptStatus tcpHandle=0x4fbbc30

The stationOutputSelectSoftKey message is used by Cisco CallManager to cause the Skinny Station to select a specific set of soft keys.

16:05:41.625 CCMStationD - stationOutputSelectSoftKeys tcpHandle=0x4fbbc30

The next message is used by Cisco CallManager to instruct the Skinny Station as to the correct line context for the display.

16:05:41.625 CCMStationD - stationOutputActivateCallPlane tcpHandle=0x4fbbc30

© 2000 Cisco Systems, Inc.

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Cisco Systems 30 VIP manual Cisco CallManager Intra-Cluster Call Flow Traces

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