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Table 1-2
Gateway Feature Specifics (continued)
Feature
Supported audio codecs
Audio Transcoding
Supported video protocols
Supported video resolutions
Supported bandwidths
(Kbps)
Gateway P20 SP
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
G.711 (ISDN) < > G.723.1 (IP) for up to 60
voice channels.
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.
H.261, H.263, H.263+ (Annexes F, J and N), H.263++ (Annex W), H.264
VGA, XGA, SVGA, SIF, 4SIF, CIF, QCIF, 4CIF, 16CIF
56, 64, 112, 128, 168, 192, 224, 256, 280,
320, 336, 384, 448, 512, 672, 768, 1288,
1472, 1680 and 1920
Note Bandwidth rates of 256 Kbps and up support the G.722 audio codec.
About Gateway Features
Gateway S40 SP
Transcoding for the 4 supported multimedia
calls.
56, 64, 112, 128, 168, 192, 224, 256, 280,
320, 336, 384, 448, 512, 672, 768, 1288,
1472 and 1920
Functionality
5
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