Cisco Systems SPA9000 manual SIP Guid

SPA9000 Field Reference

Voice tab

B

Auth Resync-Reboot	If this feature is enabled, the SPA9000 authenticates the
	sender when it receives the NOTIFY resync reboot (RFC
	2617) message. To use this feature, select yes. Otherwise,
	select no.
	Default: yes
SIP Proxy-Require	The SIP proxy can support a specific extension or behavior
	when it detects 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.
	Default: blank
SIP Remote-Party-ID	To use the Remote-Party-ID header instead of the From
	header, select yes. Otherwise, select no.
	Default: yes
SIP GUID	The Global Unique ID is generated for each line for each
	device. When it is enabled, the SPA9000 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.
	Default: no

SPA9000 Voice System Administration Guide 253