User guide

Functionality 5
About Gateway Features
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 RADVISION unit
includes both a Gateway and an 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.
Table 1-2 Gateway Feature Specifics (continued)
Feature Gateway P20 SP Gateway S40 SP