Cisco Cisco Unified MeetingPlace Video Integration

Joining more than 12 4CIF endpoints into a full-screen conference may result in significant video 
delays. 

When there is a Cisco Unified Communications Manager cluster with an MCU conference bridge, 
and an endpoint registered to a remote Cisco Unified Communications Manager cluster calls into a 
SIP conference via the H.323 intercluster trunk, a Hold/Resume operation performed on the 
endpoint connected via the trunk causes a black video frame to be sent to local endpoint.

An MCU user may be unable to receive video from a remote MCU user when the remote party holds 
and then unholds a call while in a four-party conference. 

In cascaded conferences with H.239, keep only one presentation open at any given time and close 
all other presentations. Using simultaneous presenters in a cascaded conference may result in the 
display of more than one presentation to participants. 

Enabling H.243 in the Settings > Conference Control section may cause H.239 interoperability 
issues with Aethra endpoints.

Some ISDN endpoints connected to the MCU via a gateway may fail to send the presentation 
channel when using H.239 XGA. 

When working with H.239 XGA in a conference including Sony and Polycom or Sony and 
TANDBERG endpoints, the presentation video from the Polycom or TANDBERG endpoint may not 
appear on the Sony endpoint. 

In a cascaded conference, the conference control of the child conference does not indicate the 
identity of the active speaker. A workaround is to view the conference from the parent MCU that 
does display this correctly.

In a cascaded conference, the encryption status of individual participants may display incorrectly. 

Participants on the same Slave conference cannot control each other via the Master conference. 
Control is available via local layouts.

It is not possible to create an ad hoc SIP conference from an existing conference.

Voice Activation on a Slave conference is available using the following procedure only:

In the Conference Control interface of the Master conference, drag and drop the Voice 
Activation asterisk (*) to one of the sub-frames.

If auto-switching is enabled, disable it and then enable it again.

If auto-switching is disabled, enable it and then disable it again.

Multi-participant layout views are not available for meetings which cascade multiple EMPs.

When connecting Sony PCS1 in SCCP mode using H.264, video may not open. A workaround is to 
use H.263 when connecting Sony PCS1 using SCCP.

Using the TANDBERG Transfer button in an SCCP conference with only one participant results in 
a video freeze or no video. This does not happen in conferences with more than one participant.

Do not change SCCP settings in the Protocols > SCCP screen while there are ongoing SCCP calls.