Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 1 – Troubleshooting
Cisco VCS Deployment Guide: CUCM v6.1, 7 and 8 with Cisco VCS X7.1 using a SIP trunk
Page 32 of 53
In-call problems
Calls remain up for a maximum of 15 minutes.
If a call is made from CUCM (version 8.0 or earlier) to a Cisco VCS FindMe that has CallerID set to
FindMe ID, CUCM does not handle the session refresh messages Cisco VCS sends to it (the
message has an updated From: header) and so session refreshes fail and the call is cleared by the
session refresh timer.
FindMe ID, CUCM does not handle the session refresh messages Cisco VCS sends to it (the
message has an updated From: header) and so session refreshes fail and the call is cleared by the
session refresh timer.
This is not a problem in CUCM versions later than 8.0.
Calls clear down when a call transfer from a video phone on CUCM
transfers a call to Cisco VCS
transfers a call to Cisco VCS
Even if use of a media termination point (MTP) is not requested on the SIP trunk between CUCM and
Cisco VCS, if DTMF signaling method is configured as “No preference” on the SIP trunk on CUCM,
CUCM will try and use a Media Transfer Point and the call will fail.
Cisco VCS, if DTMF signaling method is configured as “No preference” on the SIP trunk on CUCM,
CUCM will try and use a Media Transfer Point and the call will fail.
To resolve this, ensure that DTMF signaling method is configured as “RFC 2833” on CUCM on the
SIP trunk from CUCM to Cisco VCS.
SIP trunk from CUCM to Cisco VCS.
Failure to join a CUCM endpoint to a conference using Multiway
Ensure that VCS and CUCM are set up as described in “Appendix 6 – Cisco TelePresence Multiway
and CUCM”.
and CUCM”.
Taking a trace on CUCM using RTMT
RTMT is a tool that lets you monitor system health, view graphs and collect logs from CUCM. There
are versions for both Linux and Windows. CUCM must also be configured to specify what can be
traced.
are versions for both Linux and Windows. CUCM must also be configured to specify what can be
traced.
Configure CUCM to enable tracing
1. Log in to CUCM.
2. In the
Navigation
drop-down select
Cisco Unified Serviceability
and click Go.
3. Go to the
Troubleshooting Trace Settings
page (
Trace > Troubleshooting Trace Settings
).
4. Select the Check All Services check box.
5. Click Save.
Installing RTMT – Real Time Monitoring Tool
1. Log in to CUCM using a Linux or Windows PC.
2. Go to
Application > Plugins
.
3. Select Find with ‘Name begins with <blank>’ and ‘Plugin Type equals Installation’.
4. Scroll down to the entry for ‘Cisco Unified CM Real-Time Monitoring Tool – Linux’ or ‘Cisco
Unified CM Real-Time Monitoring Tool – Windows’, as required.
5. Click on the
Download
6. When downloaded, run the downloaded install file.
link.
7. Follow the instructions in the install wizard.
8. When complete, click Done to exit the installer.