Cisco Systems SPA8000, SPA2102, SPA3102, WRP400 Configured Proxy or Outbound Proxy if Use Outbound

ATA Voice Field Reference

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Restrict Source IP	If Lines 1 and 2 use the same SIP Port value and the
	Restrict Source IP feature is enabled, the proxy IP address
	for Lines 1 and 2 is treated as an acceptable IP address for
	both lines. To enable the Restrict Source IP feature, select
	yes. Otherwise, select no. If configured, the PAP2T will
	drop all packets sent to its SIP Ports originated from an
	untrusted IP address. A source IP address is untrusted if it
	does not match any of the IP addresses resolved from the
	configured Proxy (or Outbound Proxy if Use Outbound
	Proxy is yes).
	The default is no.
Referor Bye Delay	Controls when the ATA device 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.
	The default is 4.
Refer Target Bye	For the Refer Target Bye Delay, enter the appropriate
Delay	period of time in seconds.
	The default is 0.
Referee Bye Delay	For the Referee Bye Delay, enter the appropriate period of
	time in seconds.
	The default is 0.
Refer-To Target	To contact the refer-to target, select yes. Otherwise, select
Contact	no.
	The default is no.
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.
	The default is no.
Auth INVITE	When enabled, authorization is required for initial incoming
	INVITE requests from the SIP proxy.
Reply 182 On Call	When set to yes, your ATA device replies with a SIP 182
Waiting	response to the caller if it is already in a call and the phone
	is off-hook. To use this feature, select yes. Otherwise, keep
	the default, no.
	This field is found on the SPA2102 and SPA3102 only.

ATA Administration Guide 171