Cisco OL-9420-01 - Manual (Page 6)

A-6
Troubleshooting Guide for Cisco Unified CallManager Release 5.0(2)
OL-9420-01
Appendix A Case Study: Troubleshooting Cisco Unified IP Phone Calls
Troubleshooting Intracluster Cisco Unified IP Phone Calls
The following traces show that the Cisco Unified IP Phone (1001) has gone off hook. The trace below
shows the unique messages, TCP handle, and the called number, which display on the
Cisco Unified IP Phone. No calling number appears at this point because the user has not tried to dial
any digits. The information below appears in the form of Skinny Station messages between the
Cisco Unified IP Phones and the Cisco Unified CallManager.
16:05:41.625 CCM|StationInit - InboundStim - OffHookMessageID tcpHandle=0x4fbbc30
16:05:41.625 CCM|StationD - stationOutputDisplayText tcpHandle=0x4fbbc30, Display= 1001
The next trace shows Skinny Station messages going from Cisco Unified CallManager to a
Cisco Unified IP Phone. The first message is to turn on the lamp on the calling party
Cisco Unified IP Phone.
16:05:41.625 CCM|StationD - stationOutputSetLamp stim: 9=Line instance=1 lampMode=LampOn
tcpHandle=0x4fbbc30
Cisco Unified CallManager uses the stationOutputCallState message to notify the station of certain
call-related information.
16:05:41.625 CCM|StationD - stationOutputCallState tcpHandle=0x4fbbc30
Cisco Unified CallManager uses the stationOutputDisplayPromptStatus message to cause a call-related
prompt message to display on the Cisco Unified IP Phone.
16:05:41.625 CCM|StationD - stationOutputDisplayPromptStatus tcpHandle=0x4fbbc30
Cisco Unified CallManager uses the stationOutputSelectSoftKey message to cause the Skinny Station to
choose a specific set of soft keys.
16:05:41.625 CCM|StationD - stationOutputSelectSoftKeys tcpHandle=0x4fbbc30
Cisco Unified CallManager uses the next message to instruct the Skinny Station as to the correct line
context for the display.
16:05:41.625 CCM|StationD - stationOutputActivateCallPlane tcpHandle=0x4fbbc30
In the following message, the digit analysis process is ready to identify incoming digits and check them
for potential routing matches in the database. The entry, cn=1001, represents the calling party number
where dd="" represents the dialed digit, which would show the called party number. The phone sends
StationInit messages, Cisco Unified CallManager sends StationD messages, and
Cisco Unified CallManager performs digit analysis.
16:05:41.625 CCM|Digit analysis: match(fqcn="", cn="1001", pss="", dd="")
16:05:41.625 CCM|Digit analysis: potentialMatches=PotentialMatchesExist
The following debug message shows that the Cisco Unified CallManager is providing inside dial tone to
the calling party Cisco Unified IP Phone.
16:05:41.625 CCM|StationD - stationOutputStartTone: 33=InsideDialTone tcpHandle=0x4fbbc30
After Cisco Unified CallManager detects an incoming message and recognizes that the keypad button 1
has been pressed on the Cisco Unified IP Phone, it immediately stops the output tone.
16:05:42.890 CCM|StationInit - InboundStim - KeypadButtonMessageID kpButton: 1
tcpHandle=0x4fbbc30
16:05:42.890 CCM|StationD - stationOutputStopTone tcpHandle=0x4fbbc30
16:05:42.890 CCM|StationD - stationOutputSelectSoftKeys tcpHandle=0x4fbbc30
16:05:42.890 CCM|Digit analysis: match(fqcn="", cn="1001", pss="", dd="1")
16:05:42.890 CCM|Digit analysis: potentialMatches=PotentialMatchesExist
16:05:43.203 CCM|StationInit - InboundStim - KeypadButtonMessageID kpButton: 0
tcpHandle=0x4fbbc30
16:05:43.203 CCM|Digit analysis: match(fqcn="", cn="1001", pss="", dd="10")
16:05:43.203 CCM|Digit analysis: potentialMatches=PotentialMatchesExist