Polycom 3725-76302-001O manual Field Description Preliminary

	Call Server Configuration
Field	Description
Preliminary	A preliminary is an executable script, written in the Javascript language, that
	defines processing actions (filtering or transformation) that are part of a dial
	rule and may be applied to a dial string before the dial rule’s action is
	performed.
	Sample Preliminary and Postliminary Scripts on page 255 provides some
	examples you can experiment with and modify for your purposes.
Enabled	Lets you turn a preliminary on or off without deleting it.
Script	Type (or paste) the preliminary 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.

The following table describes the Action options and how the system attempts to resolve the destination address (dial string) for each.

For this action:	The system attempts to resolve the address as follows:
Block	Blocks the call.
Resolve to IP address	Tries to treat the dial string as an IP address, and if it can, assumes it’s the address
	(and port, if included) of an unregistered endpoint. If no port is specified, it uses the
	default port of the signaling protocol.
	If the dial string contains the characters “##,” it tries to do this using the characters
	before “##.”
	For SIP:
	• If the domain part is an address not controlled by the RealPresence DMA
	system (or supercluster), the dial string is resolved unchanged.
	• If the domain part is an address controlled by the RealPresence DMA system (or
	supercluster) and the user part is an IP address (and possibly “##”), the user part
	is resolved to a SIP URI.
	• If the characters before the first “##” resolve to an IP address, the characters
	after that are treated as the user part of a URI.
	For H.323, if the characters before the first “##” resolve to an IP address, the
	characters after that are converted into the destinationInfo (ACF) or
	destinationAddress (Setup) as follows:
	• If possible, encoded as a dialedDigits address.
	• Otherwise, if possible, encoded as a url-ID.
	• Otherwise, encoded as an h323-ID.
Resolve to registered	Looks for a registered endpoint (active or inactive) that has the same alias or
endpoint	signaling address.
	Note: This action employs the H.323<->SIP gateway function if applicable.

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