Polycom 3725-76302-001O manual Host/domain name

Device Management

Field	Description
Port	The SIP signaling port number. Defaults to the standard UDP/TCP port, 5060.
	If the peer server is using a different port number, specify it.
	Note: For a Microsoft Lync 2013 SIP peer, the port should be 5061.
	If left blank, the system uses the full RFC 3263 procedure to determine the
	port via DNS.
Transport type	The transport protocol to use when contacting this peer server. The default is
	UDP.
	Auto detect tells the system to select the protocol as specified in RFC 3263,
	and is not valid if Next hop address is a numeric IP address instead of a
	host/domain name.
Use route header	Add a Route header with the peer’s Next hop address value to the message.
	Applies to both forwarded messages and external REGISTER messages.
	If not selected, the only valid Request-URI configurations are those that use
	the peer's Next hop address value for the URI host.
Downgrade	If selected, and if this peer doesn’t support TLS, the system can change the
	Request-URI schema from sips to sip and route the call to this peer.
	If not selected, the system routes a TLS call to this peer only if this peer
	supports TLS.
Prefix range	The dial string prefix(es) assigned to this SIP peer.
	Enter a single prefix (44), a range of prefixes (44-47), or multiple prefixes
	separated by commas (44,46)
	If your dial plan uses the Dial services by prefix dial rule (in the default dial
	plan) to route calls to services, all dial strings beginning with an assigned
	prefix are forwarded to this SIP peer for resolution.
	If your dial plan instead uses a rule that you create to apply the Resolve to
	external SIP peer action, there is no need to specify a prefix.
	Otherwise, the system applies the SIP Routing settings of the originating site
	(see Sites on page 279 and Edit Site Dialog Box on page 285) for calls to
	endpoints outside the enterprise network.
	Note: For a SIP peer, the dial string must either include the protocol or consist
	of only the prefix and user name (no @domain). For instance, if the SIP peer’s
	prefix is 123, the dial string for a call to alice@polycom.com must be one of
	the following:
	sip:123alice@polycom.com
	sips:123alice@polycom.com
	123alice
Strip prefix	If selected, the system strips the prefix when a call that includes a prefix is
	routed to this peer.
Register externally	Some external SIP peers require peers to register with them as an endpoint
	does, using a REGISTER message.
	Select this option to enable the External Registration tab and configure the
	system to register with this external peer server, following the rules specified
	in RFC 3261.

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