Polycom 3725-76302-001O manual Add External SIP Peer Dialog Box

Device Management

External SIP Peer

On the External SIP Peer page, you can add or remove SIP servers or devices from the list of SIP peers to which the system can route calls and from which it may receive calls.

This is a supercluster-wide configuration. But note that a Polycom RealPresence DMA system supercluster can provide proxy service for any or all domains in the enterprise, allowing the SIP function to be distributed, but managed centrally. This may reduce the need for external SIP peer servers (other than SIP session border controllers, or SBCs).

Note: SBC Configuration

SIP SBCs to be reached by prefix-based dialing (rule 4 of the default dial plan; see The Default Dial Plan and Suggestions for Modifications on page 241) are added to the External SIP Peer page.

SBCs to be reached by a dial rule using the Resolve to external address or Resolve to IP address action (rules 5 and 6, respectively, of the default dial plan) are configured on a per-site basis (see Edit Site Dialog Box on page 285).

For most configurations, SBCs should be configured on a per-site basis, so that calls to endpoints outside the enterprise network are routed to the SBC for the originating site.

The following table describes the fields in the list.

Column	Description
Name	The name of the SIP peer.
Description	Brief description of the SIP peer.
Next Hop Address	Fully qualified domain name (FQDN) or IP address of the SIP peer
Prefix Range	The dial string prefix(es) assigned to this SIP peer.
	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.
Enabled	Indicates whether the system is using the SIP peer.
Outbound	Indicates whether the system is registered with the SIP peer so that it can
	route calls to it.

See also:

Device Management on page 87

Edit External SIP Peer Dialog Box on page 110

Add External SIP Peer Dialog Box

The following table describes the fields in the Add External SIP Peer dialog box.

Polycom, Inc. 105