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Cisco Unified Communications Manager Configuration Guide for the Cisco TelePresence System
OL-21851-01
Chapter 3 Verifying and Troubleshooting the Cisco TelePresence System Configuration
Troubleshooting Your Configuration
CTS does not register with
Cisco Unified CM:
•
From the Cisco Unified
CM device page, the
CTS status shows
unregistered or
unknown.
•
From the codec Web user
interface (UI), CTS
status shows unknown or
inaccessible for
Cisco Unified CM.
Profile or Provisioning Issues
•
CTS profile is not provisioned properly
in Cisco Unified CM.
Directory Number Issues
•
Directory Number (DN) is not
configured.
•
Log onto Cisco Unified CM, make sure
that the CTS profile and the directory
number (DN) are created and configured
properly.
•
Completely delete from Cisco Unified CM
the CTS and the phone, including its
associated DN, then add them back to
Cisco Unified CM.
Tip
Even if you make minor changes on the
Cisco Unified CM CTS Device page,
(in the Description field, for example),
remember to click Save and restart the
CTS.
TFTP Issues
•
Cisco Unified CM or TFTP service
issue.
•
TFTP port 6970 is blocked so that the
CTS cannot download the “device config
xml” file from Cisco Unified CM TFTP
server.
XML Issues
•
XML configuration file is suspected to
be corrupted on the Cisco Unified CM
database.
•
Make sure Cisco Unified CM and TFTP
service is running. Restart services if
necessary.
•
Make sure there is no firewall or device
between the CTS and Cisco Unified CM
that blocks the 6970 port.
Hostname Issues
•
Cannot resolve hostname of
Cisco Unified CM.
If you are using the Cisco Unified CM
hostname as the TFTP server on the CTS, make
sure that the hostname can be resolved by the
domain name system (DNS).
CTS un-registers from time
to time.
SIP Issues
•
The system experiences a SIP
registration timeout.
Network Issues
•
Intermittent network issues could cause
packets to be dropped.
1.
Confirm that Cisco Unified CM is
receiving SIP messages and whether the
system is responding.
2.
Collect a packet capture if necessary to
submit to Cisco technical response for
further review.
Table 3-1
Troubleshooting the Cisco TelePresence Configuration
Problem
Possible Cause
Possible Solutions