Voice - ATCOM AT820 User Manual

AT820 Series User Manual
5.5.3.4 Others
Key: Specify the Key to send the number after pressing it, "#" and "*" are optional.

5.5.4 Voice

5.5.4.1 Echo Cancellation
A. VAD:Whether to enable VAD (Voice Active Detection) or not. G729 Payload length
can not be set over 20ms while enable it.
B. CNG: Whether to enable CNG (Comfort Noise Generator) or not. If mute the phone
and set VAD as "Yes", the phone will send comfort noise to remind the other one that
the call is remain in force.
5.5.4.2 Jitter Buffer
A. Type: Specify type for jitter buffer: Adaptive or Fixed. The SPA can buffer incoming
voice packets to minimize out-of-order packet arrival. This process is known as jitter
buffer.
B. Min Delay: The minimum delay of the jitter buffer. Ranges from 0 to 997. The default
value is 0.
C. Max Delay: The maximum delay of the jitter buffer. Ranges from 2 to 999. The
default value is 300.
D. Normal Delay: It is used as fixed delay which should be between min delay and max
delay. Ranges from 1 to 998. The default value is 120.
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