Samsung Ubigate iBG2016 Configuration Manual page 569

Step
1 configure terminal
2 dial-peer voice
voip number
3 playout-delay
mode {adaptive |
fixed}
4 playout-delay
nominal value
5 playout-delay
maximum value
6 playout-delay
minimum value
7 Exit
Example of jitter buffer operation
Jitter buffer settings: minimum delay is 20 ms. maximum delay is
−
200 ms.
Network conditions: network delay changes from 200 msec to 10msec
−
to 500 msec.
When jitter is 200 msec, the jitter buffer will quickly adapt up to 200 ms
(maximum). If network jitter decrease to 10msec and stays there for a LONG
time, the jitter buffer will slowly adapt down to 20 msec(minimum), and stay
there until the jitter increase to 500 msec. If network jitter decrease to 10 msec
for just a little while and goes up again, the jitter buffer may just adapt down
for a little and go up again, or may not even adapt down. For 500 msec jitter,
the jitter buffer will not go over 200 msec(maximum).
© SAMSUNG Electronics Co., Ltd.
Command
Enter the global configuration mode.
Enter the dial-peer configuration mode.
Determines the mode in which the jitter buffer will
operate for calls on this dial-peer.
- adaptive-adjusts the size of jitter buffer depending on
the condition of the present network to manage QoS.
- fixed-the size of jitter buffer set up at the initial
stage continues to keep on instead of not being not
variable depending on network condition.
a call starts to progress sets up jitter buffer size to be
first adapted. If network delay is uniform, after a call
is made, playout delay is kept on basis of this setup
value. In the mode above, in case that it is set as
fixed, jitter buffer is kept with setup value of normal.
In case that jitter buffer size is set up in a adaptive
mode, set up a maximum size whose jitter buffer can
be extended dynamically. this allows for the delay to
the limit established where instant delay may
increase dramatically in the network, and discards
the packets over the limit.
In case that jitter buffer size is set up in a adaptive
mode, set up a maximum size whose jitter buffer can
be extended dynamically. In the network, delay
become reduced gradually to keep a value set up in
a minimum.
Exit the dial-peer configuration mode.
Ubigate iBG2016 Configuration Guide/Ed.00
Purpose
515