Clear-com VOICE2 User Manual Page 50

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Vitec Group Communications
VoICE IP Interface User Manual
3-10
CODEC DESCRIPTIONS
The following table details the CODECs available and their
characteristics. The characteristics given in the table are described in
details below the table.
Frame Size Number of millisecond of audio per IP/UDP
packet. The larger the frame, the lower the
network bandwidth. Note that the frame size is
also the minimum initial latency.
Submit This button is pressed to send the configura-
tion to the VoICE unit.
Cancel This button is pressed to cancel any selection
that has not already been sent to the VoICE
unit.
CONFIGURATION ITEMS
Item Description
CODEC CHARACTERISTICS
Codec
Frame
Size
Sampl
e Rate
Codec
Bandwidth
Total
Bandwidth
Delay
Frequency
Response
G.711 20 ms 8 kHz 64 kbps 78 (310)
kbps
53
ms
30 Hz – 4
kHz
Linear 20 ms 16 kHz 256 kbps 280 (1120)
kbps
60
ms
10 Hz – 8
kHz
Linear 20 ms 32 kHz 512 kbps 530 (2120)
kbps
55
ms
10 Hz – 16
kHz
G.722 5 ms 16 kHz 64 kbps 116 (464)
kbps
35
ms
10 Hz - 8
Hz
G.722 10 ms 16 kHz 64 kbps 90 (360)
kbps
50
ms
10 Hz - 8
Hz
G.722 20 ms 16 kHz 64 kbps 77 (308)
kbps
60
ms
10 Hz – 8
kHz
Speex 20 ms 8 kHz 2.15 kbps 15 (60)
kbps
60
ms
30 Hz - 4
kHz
Speex 20 ms 8 kHz 3.95 kbps 17 (67)
kbps
60
ms
30 Hz - 4
kHz
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