Configuring Sip Settings For Extensions - Cisco SPA 525G2 Administration Manual

Configuring SIP, SPCP, and NAT
Configuring SIP
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
Cisco Small Business SPA 300 Series, SPA 500 Series, and WIP310 IP Phone Administration Guide

Configuring SIP Settings for Extensions

Log in to the configuration utility.
Click Admin Login and advanced.
Click the Extension <number> tab.
Under Network Settings, configure the following fields:
Parameter
SIP ToS/DiffServ
Value
SIP CoS Value [0-7]
RTP ToS/DiffServ
Value
RTP CoS Value [0-7]
Network Jitter Level
Jitter Buffer
Adjustment
Under SIP Settings, configure the following fields:
Description
Time of service (ToS)/differentiated services (DiffServ) field
value in UDP IP packets carrying a SIP message.
Defaults to 0x68.
Class of service (CoS) value for SIP messages.
Defaults to 3.
ToS/DiffServ field value in UDP IP packets carrying RTP data.
Defaults to 0xb8.
CoS value for RTP data.
Defaults to 6.
Determines how jitter buffer size is adjusted by the SPA9000.
Jitter buffer size is adjusted dynamically. The minimum jitter
buffer size is 30 milliseconds or (10 milliseconds + current RTP
frame size), whichever is larger, for all jitter level settings.
However, the starting jitter buffer size value is larger for higher
jitter levels. This setting controls the rate at which the jitter
buffer size is adjusted to reach the minimum. Select the
appropriate setting: low, medium, high, very high, or extremely
high.
Defaults to high.
Controls how the jitter buffer should be adjusted. Select the
appropriate setting: up and down, up only, down only, or
disable.
Defaults to up and down.
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