Polycom 3725-76302-001LI manual Field Description Isdn Number Assignment

Sites Site Topology

Table 11-4Edit Site dialog box (continued)

Field	Description
ISDN Number Assignment
Assignment	The ISDN number assignment method for the devices in
method	this site. The numbers being assigned are endpoint
	aliases in the form of E.164 numbers, which can be
	dialed by both IP endpoints registered to the Call Server
	and ISDN endpoints dialing in through an ISDN
	gateway.
	The assignment options are:
	• No assignment. Select this option when you don’t
	want to define a range of E.164 aliases for the site.
	• Manual assignment. Select this option to define a
	range (or ranges) of E.164 aliases for the site, but
	not automatically assign those aliases to endpoints.
	• Automatic assignment. Select this option to define
	a range (or ranges) of E.164 aliases for the site and
	automatically assign those aliases to endpoints that
	register without an alias.
	After an E.164 alias is assigned to an endpoint, it’s
	reserved for use as long as that endpoint remains
	registered with the Polycom DMA system.
	If you decide not to enable Automatic assignment, you
	can always manually add E.164 aliases to endpoints
	from the Endpoints page (see “Edit Device Dialog Box”
	on page 98). And endpoints will have any aliases with
	which they register.
Dialing method	The ISDN inward dialing method for the site:
	• DID (Direct Inward Dial). Select this option if your
	ISDN gateway is provisioned with a range of phone
	numbers from the ISDN service provider, and each
	of these numbers will be assigned to an endpoint as
	an alias.
	• Gateway Extension Dialing. Select this option if
	your ISDN gateway’s ISDN connection is
	provisioned with a single gateway phone number
	from the ISDN service provider, and endpoints will
	be assigned an extension (E.164 alias) that’s
	internal to the company and doesn’t correspond to
	any number that can be dialed on the PSTN.
	Endpoints can be dialed from the PSTN by dialing
	the ISDN gateway phone number, followed by a
	delimiter (usually a #) and the extension number.
	The gateway receives the full number from the
	PSTN and dials only the extension number on the
	IP network.

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