Linksys SPA 900 manual Field Description

Chapter 5 Linksys IP Phone Field Reference

	Ext Tab
Field	Description
Auth Resync-Reboot	If this feature is enabled, the Linksys IP phone 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.
SIP Proxy-Require	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.
SIP Remote-Party-ID	To use the Remote-Party-ID header instead of the From header, select yes. Otherwise,
	select no.
	Defaults to yes.
Referor Bye Delay	Controls when the Linksys IP phone 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.
Refer Target Bye Delay	For the Refer Target Bye Delay, enter the appropriate period of time in seconds.
	Defaults to 0.
Sticky 183	If this feature is enabled, the IP telephony ignores further 180 SIP responses after
	receiving the first 183 SIP response for an outbound INVITE. To enable this feature,
	select yes. Otherwise, select no.
	Defaults to no.
Auth INVITE	When enabled, authorization is required for initial incoming INVITE requests from the
	SIP proxy.
Referee Bye Delay	For the Referee Bye Delay, enter the appropriate period of time in seconds.
	Defaults to 0.

	Linksys IP Phone Administrator Guide
Firmware Version 5.1		5-39