Polycom SIP 3.0.2 manual Is non-Null, all of the reg.x.server.y.xxx, A-7, phones

			Configuration Files
	Permitted
Attribute	Values	Default	Interpretation
reg.x.server.y.address	dotted-decimal IP	Null	Optional IP address or host name, port,
	address or host		transport, registration period, fail-over
	name		parameters and lineseize subscription period
			of a SIP server that accepts registrations.
reg.x.server.y.port	0, Null, 1 to 65535	Null
			Multiple servers can be listed starting with
			y=1, 2, ... for fault tolerance. If specified,
reg.x.server.y.transport	DNSnaptr or	DNSnap
			these servers may override the servers
	TCPpreferred or	tr
			specified in sip.cfg in Server <server/> on
	UDPOnly or
			page A-7.
	TLS or
			Note: If the reg.x.server.y.address parameter
	TCPOnly
			is non-Null, all of the reg.x.server.y.xxx
reg.x.server.y.expires	positive integer	Null
			parameters will override the parameters
			specified in sip.cfg in Server <server/> on
reg.x.server.y.register	0, 1	Null
			page A-7.
reg.x.server.y.expires.overlap	positive integer,	60	Note: If the reg.x.server.y.address parameter
	minimum 5,		is non-Null, it takes precedence even if the
	maximum 65535		DHCP server is available.
			Note: TLS is not supported on SoundPoint IP
reg.x.server.y.retryTimeOut	Null or	Null
			300 and 500 phones.
	non-negative
	integer
reg.x.server.y.retryMaxCount	Null or	Null
	non-negative
	integer
reg.x.server.y.expires.lineSeize	positive integer	Null
reg.x.server.y.lcs	0, 1	0	This attribute overrides the reg.x.lcs.
			If set to 1, the Microsoft Live Communications
			Server is supported for registration x.
reg.x.acd-login-logout	0, 1	0	If both parameters are set to 1 for a
			registration, the ACD feature will be enabled
reg.x.acd-agent-available	0, 1	0
			for that registration.
reg.x.ringType	1 to 22	2	The ringer to be used for calls received by
			this registration. Default is the first non-silent
			ringer.
reg.x.lineKeys	1 to max	1	max = the number of line keys on the phone.
			max = 1 on SoundStation IP 4000
			max = 2 on IP 301, 320, 330, 430,
			max = 3 on IP 501,
			max = 4 on IP 550, 560,
			max = 6 on IP 600,
			max = 48 on IP 601, 650 (without any
			Expansion Modules attached, only 6 line keys
			are available)
			The number of line keys on the phone to be
			associated with registration ‘x’.

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