Polycom 3725-76302-001LI manual Domain List

External SIP Peer Device Management

Table 5-14Add External SIP Peer dialog box

Field	Description
Type	For a Microsoft Office Communications Server or Lync
	Server 2010, select Microsoft. Otherwise, select Other.
	Selecting Microsoft implicitly adds the Destination
	network value to the Domain List (if not already there)
	and automatically selects the Postliminary settings that
	are correct for most deployments with Lync Server
	2010, but you can modify them if necessary.
Transport type	The transport protocol to use when contacting this SIP
	peer. The default is UDP.
	Auto detect tells the system to select the protocol using
	DNS as specified in RFC 3263, and is not valid if Next
	hop address is a numeric IP address instead of a
	host/domain name.
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.
Register externally	Some external SIP peers require peers to register with
	them as an endpoint does, using a REGISTER
	message (also referred to as pilot registration).
	Select this option to enable the External Registration
	tab and configure the system to register with this
	external SIP peer, following the rules specified in
	RFC 3261.
Domain List	If your dial plan uses a rule to apply the Resolve to
	external SIP peer action, you can restrict calls to this
	SIP peer to specific domains by adding the authorized
	domains to this list.
	If this list is empty, all domains can resolve to this peer.
	Note: In some circumstances (depending on network
	topology and configuration), dialing loops can develop if
	you don't restrict SIP peers to specific domains.
Add new domain	Enter a domain and click Add to add it to the list of
	authorized domains.
Authorized domains	List of administrative domains, contained in the dial
	string, for which calls are routed to this SIP peer.
	Leave this list empty to route any call that matches the
	rule to this SIP peer.
	Select a domain and click Remove to remove it from
	the list.

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