Polycom 3725-76302-001LI manual 25Edit External SBC dialog box

DMA Operations Guide External SBC

Table 5-25Edit External SBC dialog box

Column	Description
External SBC
Enabled	Clearing this check box lets you stop using an external
	SBC without deleting it.
Name	SBC unit name.
Description	The text description displayed in the External SBC list.
Address	Host name or IP address of the SBC.
Port	The SBC’s port number. Leave set to 1720 unless you
	know the unit is using a non-standard port number.
Prefix range	The dial string prefix or prefix range for which the
	external SBC is responsible.
	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 SBC for resolution.
	If you don’t specify prefixes, the dial plan can use the
	Dial external networks by H.323 URL or SIP URI dial
	rule or the Dial endpoints by IP address dial rule (both
	are in the default dial plan) to contact addresses outside
	the enterprise network. The system detects that firewall
	traversal is needed and routes the call through the SBC
	closest to the caller. This must be configured per site on
	the H.323 Routing tab of the Add Site or Edit Site
	dialog (see “Edit Site Dialog Box” on page 292).
Strip prefix	If selected, the system strips the prefix when a call that
	includes a prefix is routed to this SBC.
Postliminary	A postliminary is an executable script, written in the
	Javascript language, that defines dial string
	transformations to be applied before querying the SBC.
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.

See also:

“External SBC” on page 127

“Script Debugging Dialog Box for Preliminaries/Postliminaries” on page 257

130 Polycom, Inc.