Cisco Cisco TelePresence MCU 4510 Release Notes
Known limitations
Cisco TelePresence MCU Version 4.2(1.43) software release notes
Page 13 of 20
Known limitations
Issues when removing the CompactFlash™ during operation
Removing the CompactFlash card while the MCU is in operation has been known to cause a restart.
Windows Media Player
Streaming a conference with Windows Media Player in multiple windows or tabs on the same browser
will crash the browser. This is a known issue with Windows Media Player. If you need to stream more
than one conference simultaneously, use a different player such as QuickTime or Real Player.
will crash the browser. This is a known issue with Windows Media Player. If you need to stream more
than one conference simultaneously, use a different player such as QuickTime or Real Player.
In addition, Windows Media Player 11 (WMP11) can display streams incorrectly when used as an
embedded player with browsers other than Internet Explorer. This is a known incompatibility. In some
cases, setting the video size of the main streaming video window (the Video size field in the Streaming
page) to Large will correct the problem. To work around this issue, you can use QuickTime or
RealPlayer instead of WMP, or use Internet Explorer instead of your normal browser.
embedded player with browsers other than Internet Explorer. This is a known incompatibility. In some
cases, setting the video size of the main streaming video window (the Video size field in the Streaming
page) to Large will correct the problem. To work around this issue, you can use QuickTime or
RealPlayer instead of WMP, or use Internet Explorer instead of your normal browser.
Also, the video sent to Windows Media Player when streaming can appear squashed in the horizontal
plane in this release.
plane in this release.
Streaming to QuickTime7 causes problems with some
browsers
browsers
Streaming to an embedded QuickTime player using the QuickTime 7.0 plus later option for the Player
format on the MCU can cause certain browsers to crash or remain in the 'negotiating' state indefinitely.
Affected browsers include: IE6; Firefox 1.5 (Mac and PC); Safari 2.0.3 and earlier, and Camino. IE7
and Safari 2.0.4 do not appear to be affected by this. Using the QuickTime 6.5 plus later option for the
Player format on the MCU will allow streaming to QuickTime using any browser that supports a
QuickTime plugin.
format on the MCU can cause certain browsers to crash or remain in the 'negotiating' state indefinitely.
Affected browsers include: IE6; Firefox 1.5 (Mac and PC); Safari 2.0.3 and earlier, and Camino. IE7
and Safari 2.0.4 do not appear to be affected by this. Using the QuickTime 6.5 plus later option for the
Player format on the MCU will allow streaming to QuickTime using any browser that supports a
QuickTime plugin.
Clustering limitations
Cisco TelePresence MCU Conference Director will only work with the master blade in a cluster.
Slot 10 does not support clustering in this MCU software release. However, slot 10 in the same
chassis as a cluster can be used for a standalone blade of any type.
chassis as a cluster can be used for a standalone blade of any type.
If you are using Cisco Telepresence Management Server Version 12.6 or earlier to schedule
conferences on clustered blades, only add the master blade to TMS. Do not add slave blades to TMS
and remove from TMS any blade that you subsequently configure as a slave blade: you will need to
reconfigure any scheduled conferences that were previously configured on slave blades as new
conferences running on the master blade.
conferences on clustered blades, only add the master blade to TMS. Do not add slave blades to TMS
and remove from TMS any blade that you subsequently configure as a slave blade: you will need to
reconfigure any scheduled conferences that were previously configured on slave blades as new
conferences running on the master blade.
Uploading and downloading large files while heavily loaded
It is recommended that you do not upload or download large files from the MCU while it is heavily
loaded. Files such as CDRs, audit logs and code images should be transferred when there are few or
no calls on the MCU.
loaded. Files such as CDRs, audit logs and code images should be transferred when there are few or
no calls on the MCU.
Multi-cast streaming
In this release multicast streaming is not supported for IPv6.