Sip Settings - Linksys 900 Series Administrator's Manual

Ext 1/2/3/45/6 Tab
Jitter Buffer Adjustment

SIP Settings

Field
SIP Port
SIP 100REL Enable
EXT SIP Port
Auth Resync-Reboot
SIP Proxy-Require
SIP Remote-Party-ID
SIP GUID
Linksys 900 Series IP Phone Administrator Guide
5-38
Controls how the jitter buffer should be adjusted. Select the appropriate setting: up and
down, up only, down only, or disable.
The default is up and down.
Description
Port number of the SIP message listening and transmission port.
The default is 5060.
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.
The default is no.
The external SIP port number.
If this feature is enabled, the 900 Series phone authenticates the sender when it receives
the NOTIFY resync reboot (RFC 2617) message. To use this feature, select yes.
Otherwise, select no.
The default is yes.
The SIP proxy can support a specific extension or behavior when it sees this header from
the user agent. If this field is configured and the proxy does not support it, it responds
with the message, unsupported. Enter the appropriate header in the field provided.
To use the Remote-Party-ID header instead of the From header, select yes. Otherwise,
select no.
The default is yes.
The Global Unique ID is generated for each line for each device. When it is enabled, the
900 Series phone adds a GUID header in the SIP request. The GUID is generated the first
time the unit boots up and stays with the unit through rebooting and even factory reset.
This feature was requested by Bell Canada (Nortel) to limit the registration of SIP
accounts.
The default is yes.
Chapter 5 900 Series phone Field Reference
Document Version 3.1