Linksys BUSINESS SPA932 User Manual

Linksys SPA9x2 Phone Administration Guide

166

Network Jitter Level 

Determines how jitter buffer size is adjusted by the 
SPA9x2. 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.

Jitter Buffer Adjustment 

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.

Parameter

Description

SIP Transport

Select from UDP, TCP, or TLS.

Defaults to UDP.

SIP Port 

Port number of the SIP message listening and 
transmission port.

Defaults to 5060. 

SIP 100REL Enable

To enable the support of 100REL SIP extension for 
reliable transmission of provisional responses (18x) and 
use of PRACK requests, select yes. Otherwise, select no.

Defaults to no.

EXT SIP Port

The external SIP port number. 

Auth Resync-Reboot 

If this feature is enabled, the SPA9x2 authenticates the 
sender when it receives the NOTIFY resync reboot (RFC 
2617) message. To use this feature, select yes. Otherwise, 
select no.

Defaults to yes.

Parameter

Description