Release Notes

Calls from Microsoft Lync which do not use Advanced Media Gateway
may fail
For direct calls from Microsoft Lync or OCS you must use the VCS B2BUA. Calls may no longer work if
configured through a VCS zone with profile "Microsoft Office Communication Server". For more information
on configuring the VCS, refer to the VCS Administrator documentation.
Firefox 14 is not supported for use with the Cisco TelePresence Server
We strongly recommend that you do not use Firefox 14 to access the TelePresence Server’s web interface.
This version of the browser causes an issue that was not present in previous Firefox versions and has been
fixed in Firefox 15. This issue also affected previous versions of the TelePresence Server software.
TIP calls and encryption required conferences
TIP calls can only join conferences with the Encryption setting configured to Required when TLS encrypted
signaling is used throughout the call signaling path. This ensures that the call is fully secure.
Recommended VCS version X7.2 or later
On calls to CTS endpoints in certain network configurations, calls may fail or become audio-only with earlier
versions of VCS. In order to avoid this, upgrade VCS to X7.2. If using a custom zone profile on VCS for the
Cisco Unified Communications Manager zone, ensure that SIP UPDATE strip mode is disabled on this
zone.
Limited support for some VM operations
Snapshotting a Cisco TelePresence Server on Virtual Machine should only be undertaken when following the
best practice guidelines from VMware. Cloning of a Cisco TelePresence Server on Virtual Machine is not
supported—any cloned machines will require new licenses. Unless otherwise stated, Cisco supports only
those VMware features recommended in this and other Cisco TelePresence Server on Virtual Machine
guides.
Cisco TelePresence Server Software Release Notes (4.0(2.8)) Page 29 of 36
Limitations