Specifications

Interoperability
Cisco TelePresence MCU 4.4(3.49) Maintenance Release Notes Page 13 of 27
Interoperability
We endeavor to make the MCU interoperable with all relevant standards-based equipment. While it is not
possible to test all scenarios, the testing that the data below is based on covers all the most common
functions of the listed endpoints and infrastructure.
Version 4.4 of the MCU software was used for this interoperability testing.
Note: Unless otherwise stated, Cisco Unified Communications Manager (CUCM) version 9.0.1 and Cisco
TelePresence Video Communication Server (VCS) version X7.2 were used in the interoperability tests.
About the interoperability section
The interoperability section describes the equipment and software revisions that were tested for
interoperability with this release. The absence of a device or revision from this section does not imply a lack
of interoperability.
Interoperability testing often requires interworking from one signaling/call control protocol to another. The
following table lists phrases that are used to briefly describe the call paths that were tested for each
interoperability scenario. The call paths in the table place the endpoint first and the MCU last as a general
convention.
Call scenario Call path description
SIP Endpoint <--SIP--> MCU. A registrar is used but not shown here.
H.323 Endpoint <--H.323--> MCU. A gatekeeper is used but not shown
here.
H.323 to SIP interworking Endpoint <--H.323--> VCS <--SIP--> MCU.
SIP to H.323 interworking Endpoint <--SIP--> VCS <--H.323--> MCU.
CUCM to VCS Endpoint <--SIP--> CUCM <--SIP--> VCS <--H.323--> MCU.
CUCM to MCU Endpoint <--SIP--> CUCM <--SIP--> MCU.
Endpoints
This section lists interoperability issues with endpoints, by manufacturer. Where an endpoint has limitations,
such as a lack of support for encryption or content, the interoperability tests omitted the limitations and they
are not listed here.
An infrastructure issue may manifest itself as an issue with a particular endpoint or series of endpoints;
issues of this nature are listed separately under 'Infrastructure'.
Cisco endpoints
Equipment Software revision Comments
Cisco TelePresence
System 3000
1.9.2(19) Tested CUCM to VCS and CUCM to MCU.
n Video to CTS 3000 is periodically corrupted (CSCtx91858).
n This endpoint does not respond properly to commands to
mute/unmute audio/video from MCU. Using this feature with this
endpoint may lead to unexpected behavior (CSCud21801).