Cisco Cisco TelePresence MCU 4510 Release Notes
Resolved issues
Cisco TelePresence MCU 4.4(3.54) Maintenance Release Notes
Page 8 of 27
Identifier
Description
CSCue00360 In previous releases, an MCU cascade with a Polycom RMX series could often result in the call
being disconnected. This issue is now resolved for unencrypted calls. For encrypted calls, a
workaround is necessary, where the audio codec G.722.1 Annex C should be disabled on the
MCU. An RMX side fix is planned for the encrypted calls issue, tracked by Polycom as BRIDGE-
4551, which will remove the need for this workaround.
workaround is necessary, where the audio codec G.722.1 Annex C should be disabled on the
MCU. An RMX side fix is planned for the encrypted calls issue, tracked by Polycom as BRIDGE-
4551, which will remove the need for this workaround.
CSCuf03032
In the previous 4.4 release, MCU in FullHD mode would incorrectly transcode an incoming 1080p
content resolution to an outgoing resolution of 1600x1200, even when the endpoints in the
conference had support for 1080p content. This issue is now resolved.
content resolution to an outgoing resolution of 1600x1200, even when the endpoints in the
conference had support for 1080p content. This issue is now resolved.
CSCuf20821
In the previous releases, an MCU could enter into an unresponsive state when an API application
(e.g. TMS) tried to delete an ad-hoc conference while simultaneously creating an API-scheduled
conference, while audit logging was enabled. This issue is now resolved.
(e.g. TMS) tried to delete an ad-hoc conference while simultaneously creating an API-scheduled
conference, while audit logging was enabled. This issue is now resolved.
Resolved since 4.3(2.32)
Identifier
Description
CSCud59266
In previous releases, in rare circumstances the MCU could experience an unexpected restart if
invalid bitstream was sent to the DSP and the exit message would show an sse validate failure
error. This is resolved in this release.
invalid bitstream was sent to the DSP and the exit message would show an sse validate failure
error. This is resolved in this release.
CSCtz69347
In previous releases, MCU 4200 Series models could experience an unexpected restart when
the maximum MTU size was set to 400 bytes or lower. This is resolved in this release.
the maximum MTU size was set to 400 bytes or lower. This is resolved in this release.
CSCua55120
In previous releases, the MCU could experience an unexpected restart when a participant's
muted video was used as content source. This is resolved in this release.
muted video was used as content source. This is resolved in this release.
CSCuc58773
In previous releases, when a space character was used for the displayNameOverrideValue string
over the API, the MCU could not correctly overlay this character on the participant's video. This is
resolved in this release.
over the API, the MCU could not correctly overlay this character on the participant's video. This is
resolved in this release.
CSCuc57928
In previous releases, the MCU 4200 Series models could experience an unexpected restart with
an H.264 decoder marker check failure message when invalid bitstream was sent to the DSP.
This is resolved in this release.
an H.264 decoder marker check failure message when invalid bitstream was sent to the DSP.
This is resolved in this release.
CSCuc46770
In previous releases, when content mode was set to passthrough, content transmission could fail
from a C-series endpoint when an MXP endpoint was present in the same conference and the
call bandwidth was less than 1Mbps. This is resolved in this release.
from a C-series endpoint when an MXP endpoint was present in the same conference and the
call bandwidth was less than 1Mbps. This is resolved in this release.
CSCub83253
In previous releases, when dialing a SIP participant by IP address, if the SIP registrar box was
ticked, the MCU would incorrectly append its SIP domain name to the IP address. This is
resolved in this release.
ticked, the MCU would incorrectly append its SIP domain name to the IP address. This is
resolved in this release.
CSCub18876
In previous releases, MCU 4501 or 4505 models could take over a minute to establish H.245
connection to participants when there are several incomplete H.225 TCP connections open to
powered-off endpoints. In this release, the behavior is improved for those models but it is still
advised to ensure endpoints are turned on if they are preconfigured on the MCU as they will be
automatically dialed out; alternatively use a gatekeeper.
connection to participants when there are several incomplete H.225 TCP connections open to
powered-off endpoints. In this release, the behavior is improved for those models but it is still
advised to ensure endpoints are turned on if they are preconfigured on the MCU as they will be
automatically dialed out; alternatively use a gatekeeper.
CSCuc40088
In previous releases, the MCU could experience an unexpected restart due to a picture buffer
overrun that could be triggered by a corrupt bit-stream. This is resolved in this release.
overrun that could be triggered by a corrupt bit-stream. This is resolved in this release.
CSCtx81724
In previous releases, the RTCP PLI (picture loss indication) messages sent by the MCU were not
part of a compound RTCP packet. This is resolved in this release.
part of a compound RTCP packet. This is resolved in this release.