Polycom 3725-76302-001O manual Edit External H.323 SBC Dialog Box

Device Management

Edit External H.323 SBC Dialog Box

The following table describes the fields in the Edit External H.323 SBC dialog box.

Note: SBC Configuration

Only H.323 SBCs are added to the External H.323 SBC page. SIP SBCs are configured as SIP peers (see External SIP Peer on page 105) and/or on a per-site basis (see Edit Site Dialog Box on

page 285).

H.323 SBCs that are added to the External H.323 SBC page are reached by prefix-based dialing (rule 4 of the default dial plan; see The Default Dial Plan and Suggestions for Modifications on page 241).

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

In general, H.323 SBCs should be configured on a per-site basis, so that calls to endpoints outside the enterprise network are routed to the SBC assigned to the originating site.

Column	Description
External H.323 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 H.323 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 assigned to this SBC. Required.
	Enter a single prefix (44), a range of prefixes (44-47), or multiple prefixes
	separated by commas (44,46)
	The Dial services by prefix dial rule in the default dial plan routes calls to the
	assigned prefix(es) to this SBC for resolution.
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 H.323 SBC on page 120

Script Debugging Dialog Box for Preliminaries/Postliminaries on page 254

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