Cisco Cisco TelePresence MCU 4510 Release Notes
Interoperability
Cisco TelePresence MCU 4.3(2.30) Software Release Notes
Page 13 of 17
Other endpoints
Equipment
Software revision
Comments
Aethra X3
11.2.2
Tested H.323 interoperability.
Due to inaccurate timestamps sent by this endpoint, lip
synchronisation cannot be guaranteed.
synchronisation cannot be guaranteed.
The MCU does not support SIP with this endpoint.
LifeSize Room
4.7.13(22)
Tested H.323 and SIP interoperability.
Encrypted SIP calls are not supported between the MCU and
this endpoint (CSCtx91859).
this endpoint (CSCtx91859).
SIP content is not supported between the MCU and this
endpoint.
endpoint.
G.722.1 Annex C is not supported between the MCU and this
endpoint.
endpoint.
Radvision
Scopia XT1000
Scopia XT1000
02.05.0031
Tested H.323 and SIP interoperability.
Encrypted SIP calls are not supported between the MCU and
this endpoint.
this endpoint.
Infrastructure
This section lists known interoperability issues with infrastructure components. These may manifest themselves as
issues with a particular endpoint or series of endpoints.
issues with a particular endpoint or series of endpoints.
Equipment
Software revision
Comments
Cisco
TelePresence
Video
Communication
Server (VCS)
TelePresence
Video
Communication
Server (VCS)
X7.0
If a call is made between an endpoint and an MCU, with the
endpoint using SIP and the MCU using H.323, and a second
endpoint joins the conference and sends a content stream (any
protocol) to the MCU, the first endpoint display will freeze or go
black when the second endpoint stops streaming content. This
is because the first endpoint is not aware that streaming has
ended and is expecting to receive further content. (CSCtx71406)
endpoint using SIP and the MCU using H.323, and a second
endpoint joins the conference and sends a content stream (any
protocol) to the MCU, the first endpoint display will freeze or go
black when the second endpoint stops streaming content. This
is because the first endpoint is not aware that streaming has
ended and is expecting to receive further content. (CSCtx71406)
An endpoint, for example CTS, may end up in a half encrypted
call where the call leg from CTS > CUCM > VCS is unencrypted
and the call leg from VCS > MCU is encrypted.
call where the call leg from CTS > CUCM > VCS is unencrypted
and the call leg from VCS > MCU is encrypted.
Cisco Unified
Communications
Manager
Communications
Manager
8.6(1a)
After using hold and resume, CTS endpoints connected via
CUCM do not receive audio from the MCU (CSCtr60976).
CUCM do not receive audio from the MCU (CSCtr60976).
In networks in which not all call legs are encrypted, calls may
drop after using hold and resume. When using encryption it is
recommended that all call legs are encrypted (CSCtr52491).
drop after using hold and resume. When using encryption it is
recommended that all call legs are encrypted (CSCtr52491).
Cisco
TelePresence
Content Server
TelePresence
Content Server
S5.0
Tested H.323 and SIP interoperability.
Audio may be distorted if G722.1 codec is negotiated.
(CSCty01044)
(CSCty01044)
Audio may be distorted on low bandwidth calls. (CSCtx91864)
Polycom MGC
9.0.4.3
Test H.323.
H.264 video between the MGC and the MCU is not supported if
the call bandwidth is 384 kbps or less.
the call bandwidth is 384 kbps or less.
To avoid this, either use a higher bandwidth or disable H.264
when dialing the MGC using custom codec selection.(Reference
CSCts46389)
when dialing the MGC using custom codec selection.(Reference
CSCts46389)
Tandberg
Gatekeeper
Gatekeeper
N5.2
No issues found.