Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 1 – Troubleshooting
Cisco VCS Deployment Guide: Microsoft OCS 2007 R2, Lync 2010 and Cisco VCS X7.0
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To check who is watching for presence (of one or more entities in domains handled by Cisco VCS
Presence Server):
•
Presence Server):
•
go to
Status > Applications > Presence > Subscribers
No presence being observed
Check that there is no transform that may be inadvertently corrupting the presence Publication,
Subscription or Notify – e.g. that there is no transform modifying the presence URI. (Notifies are sent
to the subscription contact ID, typically <name>@<IP address>:<IP port>;transport=xxx. Any
transforms that modify this are likely to stop the presence Notify being routed appropriately)
Subscription or Notify – e.g. that there is no transform modifying the presence URI. (Notifies are sent
to the subscription contact ID, typically <name>@<IP address>:<IP port>;transport=xxx. Any
transforms that modify this are likely to stop the presence Notify being routed appropriately)
MOC/Lync client fails to update status information
If a MOC/Lync client is started before the presence server is enabled, the MOC/Lync client may need
to be logged out and logged back in again before it will display the correct presence information.
to be logged out and logged back in again before it will display the correct presence information.
Check for errors
Checking for presence problems should be carried out in the same way as checking for errors with
calls: check the event log (available from the web browser) and the logging facilities mentioned in the
‘Check for errors’ section above.
calls: check the event log (available from the web browser) and the logging facilities mentioned in the
‘Check for errors’ section above.
Video endpoint reports that it does not support the
MOC/Lync client SDP
MOC/Lync client SDP
If a video endpoint reports that it does not support the MOC/Lync client SDP, for example by
responding “400 Unable to decode SDP” to a SIP INVITE message containing the MOC multi-part
mime SDP sent to it:
responding “400 Unable to decode SDP” to a SIP INVITE message containing the MOC multi-part
mime SDP sent to it:
Check whether the OCS/Lync server is sending calls to the VCS incoming IP port, rather than the
B2BUA IP port that should be receiving the incoming SIP messages.
B2BUA IP port that should be receiving the incoming SIP messages.
Reconfigure OCS/Lync server to send calls to the B2BUA IP port.
TLS neighbor zone to OCS/Lync server is active, and
messaging gets sent from VCS to OCS/Lync server, but
OCS/Lync debug says OCS/Lync fails to open a
connection to VCS
messaging gets sent from VCS to OCS/Lync server, but
OCS/Lync debug says OCS/Lync fails to open a
connection to VCS
The local host name and domain name fields must be configured in the VCS
System > DNS
page so
that VCS can use the VCS hostname (rather than IP address) in communications. OCS/Lync requires
the use of VCS hostname so that it can open a TLS connection to the VCS.
the use of VCS hostname so that it can open a TLS connection to the VCS.
MOC/Lync client initiated call fails to connect
If a call fails to connect, check that the endpoint, IP Gateway, MCU or ISDN Gateway is NOT in
Microsoft mode; ensure that it is in Standard or Auto mode. (From a H323/SIP trace, an indication that
the device is in Microsoft mode is the presence of a “proxy=replace” field in the contact header of the
200 OK from the device.)
Microsoft mode; ensure that it is in Standard or Auto mode. (From a H323/SIP trace, an indication that
the device is in Microsoft mode is the presence of a “proxy=replace” field in the contact header of the
200 OK from the device.)
OCS/Lync responds to INVITE with ‘488 Not acceptable
here’
here’
This is normally seen if the B2BUA forwards an INVITE from a standards-based video endpoint where
the ‘From’ header in the SIP INVITE only contains the IP address of the endpoint, e.g. “From:
the ‘From’ header in the SIP INVITE only contains the IP address of the endpoint, e.g. “From: