Yealink SIP-T3 Specifications download pdf (Page 220)

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101

Administrator’s Guide for SIP-T2xP IP Phones

204

Jitter Buffer

Jitter buffer is a shared data area where voice packets can be collected, stored, and

sent to the voice processor in even intervals. Jitter is a term indicating variations in

packet arrival time, can occur because of network congestion, timing drift or route

changes. The jitter buffer, located at the receiving end of the voice connection,

intentionally delays the arriving packets so that the end user experiences a clear

connection with very little sound distortion. IP phones support two types of jitter buffers:

static and dynamic. A static jitter buffer adds the fixed delay to voice packets. You can

configure the delay time for the static jitter buffer on IP phones. A dynamic jitter buffer is

capable of adapting the changes in the network's delay. The range of the delay time

for the dynamic jitter buffer added to packets can be also configured on IP phones.

Procedure

Jitter buffer can be configured using the configuration files or locally.

Configuration File

<y0000000000xx>.cfg

Configure the mode of jitter

buffer and the delay time for

jitter buffer.

For more information, refer to

Jitter Buffer on page 361.

Local

Web User Interface

Configure the mode of jitter

buffer and the delay time for

jitter buffer.

Navigate to:

http://<phoneIPAddress>/servl

et?p=settings-voice&q=load

To configure Jitter Buffer via web user interface:

1. Click on Settings->Voice.

2. Mark the desired radio box in the Type field.

3. Enter the minimum delay time for adaptive jitter buffer in the Min Delay field.

4. Enter the maximum delay time for adaptive jitter buffer in the Max Delay field.

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