Sip Settings - Cisco 521SG - Unified IP Phone VoIP Administration Manual

Cisco SPA IP Phone Field Reference
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Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide

SIP Settings

Parameter
SIP Transport
SIP Port
SIP 100REL Enable
EXT SIP Port
Auth Resync-
Reboot
SIP Proxy-Require
SIP Remote-Party-
ID
Referor Bye Delay
Description
Select from UDP, TCP, or TLS.
Defaults to UDP.
Port number of the SIP message listening and
transmission port.
Defaults to 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.
Defaults to no.
The external SIP port number.
If this feature is enabled, the Cisco SPA9000 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.
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.
Defaults to yes.
Controls when the SPA9000 sends BYE to terminate stale
call legs upon completion of call transfers. Multiple delay
settings (Referor, Refer Target, Referee, and Refer-To
Target) are configured on this screen. For the Referor Bye
Delay, enter the appropriate period of time in seconds.
Defaults to 4.
A
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