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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.6
OL-17011-01
Chapter 1 Functionality
About Gateway Features
Table 1-2 Cisco Gateway Feature Specifics
Feature Cisco Unified Videoconferencing
3545 PRI Gateway
Cisco Unified Videoconferencing
3545 Serial Gateway
Supported ports 2 PRI ISDN ports 4 serial ports
Supported video
conferencing protocols
H.320, H.323 (using Cisco Stack v4.0)
Supported audio codecs The term audio transcoded video calls refers to the process whereby an
audio stream in a multimedia call can be transcoded from one codec type to
another.
Basic and advanced audio coding supported codecs: G.711, G.722, G.722.1,
G.723.1, G.728
Audio Transcoding G.711 (ISDN) < > G.723.1 (IP) for
up to 60 voice channels.
Transcoding for the 4 supported
multimedia calls.
G.711 (IP) < > G.728 (ISDN) for up
to 20 audio transcoded video
channels.
The gateway automatically performs
A-Law G.711-to-µ-Law G.711
translation between the IP and ISDN
sides if needed.
Note When your Cisco unit
includes both a gateway and
a MCU, G.728 transcoding is
supported on the MCU only.
Supported video
protocols
H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264
Supported video
resolutions
VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF
Supported bandwidths
(Kbps)
56, 64, 112, 128, 168, 192, 224, 256,
280, 320, 336, 384, 448, 512, 672,
768, 1288, 1472, 1680 and 1920
56, 64, 112, 128, 168, 192, 224, 256,
280, 320, 336, 384, 448, 512, 672,
768, 1288, 1472 and 1920
Note Bandwidth rates of 256 Kbps and up support the G.722 audio codec.