Polycom SIP 3.1 NOTE TLS is not supported on SoundPoint, IP 300 and 500 phones, seconds 3600

Administrator’s Guide SoundPoint IP / SoundStation IP

	Permitted
Attribute	Values	Default	Interpretation
voIpProt.server.x.transport	DNSnaptr or	DNSnapt	If set to Null or DNSnaptr:
	TCPpreferre	r	If voIpProt.server.x.address is a
	d or		hostname and voIpProt.server.x.port is 0 or
	UDPOnly or		Null, do NAPTR then SRV look-ups to try to
	TLS or		discover the transport, ports and servers, as
	TCPOnly		per RFC 3263. If
			voIpProt.server.x.address is an IP
			address, or a port is given, then UDP is used.
			If set to TCPpreferred:
			TCP is the preferred transport, UDP is used if
			TCP fails.
			If set to UDPOnly:
			Only UDP will be used.
			If set to TLS:
			If TLS fails, transport fails. Leave port field
			empty (will default to 5061) or set to 5061.
			If set to TCPOnly:
			Only TCP will be used.
			NOTE: TLS is not supported on SoundPoint
			IP 300 and 500 phones.
voIpProt.server.x.expires	positive	3600	The phone’s requested registration period in
	integer,		seconds.
	minimum		Note: The period negotiated with the server
	300
			may be different. The phone will attempt to
			re-register at the beginning of the overlap
			period. For example, if “expires”=3600 and
			“overlap”=60, the phone will re-register after
			3540 seconds (3600 – 60).
voIpProt.server.x.expires.overlap	positive	60	The number of seconds before the expiration
	integer,		time returned by server x at which the phone
	minimum 5,		should try to re-register. The phone will try to
	maximum		re-register at half the expiration time returned
	65535		by the server if that value is less than the
			configured overlap value.
voIpProt.server.x.register	0, 1	1	If set to 0, calls can be routed to an outbound
			proxy without registration.
voIpProt.server.x.retryTimeOut	Null or	0	If set to 0 or Null, use standard RFC 3261
	non-negativ		signaling retry behavior. Otherwise
	e integer		retryTimeOut determines how often retries
			will be sent.
			Units = milliSeconds. (Finest resolution =
			100ms).

A - 8