DMA OperationsGuide External SIP Peer
108 Polycom, Inc.
See also:
“External Gatekeeper” on page103
“Script Debugging Dialog Box for Preliminaries/Postliminaries” on
page2 57
“Device Authentication” on page264
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 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).
The following table describes the fields in the list.
Postliminary A postliminary is an executable script, written in the
Javascript language, that defines dial string
transformations to be applied before querying the
external gatekeeper.
Enabled Lets you turn a postliminary on or off without deleting it.
Script Type (or paste) the postliminary script you want to
apply. Then click Debug this script to open the Script
Debugging Dialog Box for Preliminaries/Postliminaries
and test the script with various variables.
Table 5-12 Edit External Gatekeeper dialog box
Column Description
Table 5-13 Fields in the External SIP Peer 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