Technical Description of TANDBERG 8000 with software version E3/B8
D12008 Rev. 11
49
4.5.11
Audio Compression Algorithms
The following audio algorithms are supported on the TANDBERG 8000:
•
G.711 48/56/64 kbps, 3.1 kHz bandwidth.
•
G.728 16 kbps, 3.1 kHz bandwidth.
•
G.722 48/56/64 kbps, 7 kHz bandwidth.
•
G.722.1 24 kbps or 32 kbps, 7 kHz bandwidth
41
.
When system set to Auto, the following are the preferred
audio quality priorities
on call rates
above 192 kbps:
1.
G.722 (64 H.323)
2.
G.722 (56 H.320)
3.
G.722 (48 H.320)
4.
G.722.1 (32 H.320, H.323)
5.
G.722.1 (24 H.320, H.323)
6.
G.728
7.
G.711 (64,56,48)*
When system set to Auto, the following are the preferred
audio quality priorities
on call rates
below or equal to 192 kbps:
1.
G.722.1 (24 H.320, H.323)
2.
G.722.1 (32 H.320, H.323)
3.
G.728
4.
G.722 (56 H.320)
5.
G.722 (64 H.323)
6.
G.722 (48 H.320)
7.
G.711 (64,56,48)*
(*) H.323 and H.320 will always choose
µ
-Law before a-Law (for G.711). Telephony will
choose algorithm according to the network used.
When using MultiSite and all sites are talking at the same time, the audio from all sites will be
processed together. This means all the site’s audio will be heard locally.
41 24 kbps is used on call rates
≤
192 kpbs, 32 kbps >192 kbps.
