Cisco Systems 30 VIP manual - page 2

Cisco IP Telephony Troubleshooting Guide for Cisco CallManager Release 3.0(1)
© 2000 Cisco Systems, Inc. 2
Conference Bridge.................................................................................................................32
Transcoding Problems...........................................................................................................33
MTP Resource Problems.......................................................................................................35
Dial Plans.............................................................................................................................. 37
Partitions................................................................................................................................38
Security..................................................................................................................................40
Slow Server Response............................................................................................................... 42
Reorder Tone Through Gateways............................................................................................. 42
Gateway Registration Problems................................................................................................ 43
Gatekeeper Problems.................................................................................................................48
Inter-Cluster Trunks Only..................................................................................................... 48
Admission Rejects (ARJ)...................................................................................................... 48
Registration Rejects (RRJ).................................................................................................... 49
Intra-Cluster Cisco IP Phone-to-Cisco IP Phone Calls................................................................. 50
Sample Topology...................................................................................................................... 50
Cisco IP Phone Initialization Process........................................................................................50
Skinny Station Registration Process .........................................................................................52
Cisco IP Phone-to-Cisco IP Phone Call Flow within a Cluster................................................ 53
Cisco IP Phone-to-Cisco IP Phone Exchange of Skinny Station Messages during Call Flow. 54
Cisco CallManager Initialization Process................................................................................. 55
Self-Starting Processes.............................................................................................................. 56
Cisco CallManager Registration Process.................................................................................. 57
Cisco CallManager KeepAlive Process ....................................................................................58
Cisco CallManager Intra-Cluster Call Flow Traces.................................................................. 59
Cisco IP Phone-to-Cisco IOS Gateway Calls ...............................................................................63
Sample Topology...................................................................................................................... 63
Call Flow Traces....................................................................................................................... 63
Debug Messages and Show Commands on the Cisco IOS Gatekeeper.................................... 66
Debug Messages and Show Commands on the Cisco IOS Gateway........................................ 67
Cisco IOS Gateway with T1/PRI Interface...............................................................................70
Cisco IOS Gateway with T1/CAS Interface............................................................................. 71
Inter-Cluster Cisco IP Phone-to-Cisco IP Phone Calls................................................................. 73
Sample Topology...................................................................................................................... 73
Inter-Cluster H.323 Communication.........................................................................................73
Call Flow Traces....................................................................................................................... 74
Failed Call Flow........................................................................................................................ 75
Call Detail Records (CDRs and CMRs)........................................................................................77
Writing Records........................................................................................................................ 77
Reading Records .......................................................................................................................77
Removing Records.................................................................................................................... 78
Table Schema............................................................................................................................ 78
Known Issues............................................................................................................................ 79
IP to Device Name Translation............................................................................................. 79
OnNet vs. OffNet.................................................................................................................. 79
OffNet Digits Dialed............................................................................................................. 79
Fields in a Call Detail Record................................................................................................... 79