Appendix B Case Study: Troubleshooting Cisco Unified IP Phone Calls

Troubleshooting Intercluster Cisco Unified IP Phone Calls

In this call flow, a Cisco Unified IP Phone (2002) located in Cluster 2 is calling a

Cisco Unified IP Phone (1001) located in Cluster 1. 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.

In the following traces, the Cisco Unified IP Phone (2002) has gone off hook. The trace shows the unique messages, TCP handle, and the calling number, which displays on the Cisco Unified IP Phone. The following debug output shows the called number (1001), H.225 connect, and H.245 confirm messages. The codec type is G.711 mu-law.

16:06:13.921 CCMStationInit - InboundStim - OffHookMessageID tcpHandle=0x1c64310 16:06:13.953 CCMOut Message -- H225ConnectMsg -- Protocol= H225Protocol 16:06:13.953 CCMIe - H225UserUserIe IEData= 7E 00 37 05 02 C0 06

16:06:13.953 CCMStationD - stationOutputCallInfo CallingPartyName=, CallingParty=2002, CalledPartyName=1001, CalledParty=1001, tcpHandle=0x1c64310

16:06:14.015 CCMH245Interface(2) OLC indication chan number = 2

16:06:14.015 CCMStationD - stationOutputOpenReceiveChannel tcpHandle=0x1c64310 myIP: e74610ac (172.16.70.231)

16:06:14.015 CCMStationD - ConferenceID: 0 msecPacketSize: 20 compressionType:(4)Media_Payload_G711Ulaw64k

16:06:14.062 CCMStationInit - InboundStim - StationOpenReceiveChannelAckID tcpHandle=0x1c64310, Status=0, IpAddr=0xe74610ac, Port=20444, PartyID=2 16:06:14.062 CCMH245Interface(2) paths established ip = e74610ac, port = 20444 16:06:14.187 CCMH245Interface(2) OLC outgoing confirm ip = fc4610ac, port = 29626

The following traces show the calling and called party number, which associates with an IP address and a hexidecimal value.

16:06:14.187 CCMStationD - stationOutputStartMediaTransmission tcpHandle=0x1c64310 myIP: e74610ac (172.16.70.231)

16:06:14.187 CCMStationD - RemoteIpAddr: fc4610ac (172.16.70.252)

The following traces show the packet sizes and the MAC address of the Cisco IP Phone (2002). The disconnect, then on-hook messages, follow these traces.

RemoteRtpPortNumber: 29626 msecPacketSize: 20 compressionType:(4)Media_Payload_G711Ulaw64k

16:06:16.515

CCM Device SEP003094C26105 , UnRegisters with SDL Link to monitor NodeID= 1

16:06:16.515

CCMStationD - stationOutputCloseReceiveChannel tcpHandle=0x1c64310 myIP:

e74610ac (172.16.70.231)

16:06:16.515

CCMStationD - stationOutputStopMediaTransmission tcpHandle=0x1c64310 myIP:

e74610ac (172.16.70.231)

16:06:16.531

CCMIn Message -- H225ReleaseCompleteMsg -- Protocol= H225Protocol

16:06:16.531

CCMIe - Q931CauseIe -- IEData= 08 02 80 90

16:06:16.531

CCMIe - H225UserUserIe -- IEData= 7E 00 1D 05 05 80 06

16:06:16.531

CCMLocations:Orig=1 BW=64Dest=0 BW=-1 (-1 implies infinite bw available)

16:06:16.531

CCMMediaManager - wait_AuDisconnectRequest - StopSession sending disconnect

to (64,2) and remove connection from list

16:06:16.531

CCMMediaManager - wait_AuDisconnectReply - received all disconnect replies,

forwarding a

reply for party1(16777219) and party2(16777220)

16:06:16.531 CCMMediaCoordinator - wait_AuDisconnectReply - removing MediaManager(2) from connection list

16:06:16.734 CCMStationInit - InboundStim - OnHookMessageID tcpHandle=0x1c64310

Failed Call Flow

The following section describes an unsuccessful intercluster call flow, as seen in the SDI trace. In the following traces, the Cisco Unified IP Phone (1001) goes off hook. A TCP handle gets assigned to the Cisco Unified IP Phone.

16:05:33.468 CCMStationInit - InboundStim - OffHookMessageID tcpHandle=0x4fbbc30 16:05:33.468 CCMStationD - stationOutputDisplayText tcpHandle=0x4fbbc30, Display= 1001

Troubleshooting Guide for Cisco Unified CallManager Release 5.0(2)

 

B-10

OL-9420-01

 

 

 

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Cisco Systems OL-9420-01 appendix Failed Call Flow, CCMIe H225UserUserIe -- IEData= 7E 00 1D 05 05 80