Polycom 3725-77601-001H Did Direct Inward Dial . Select this option when, Isdn Number Assignment

Polycom CMA System Setup Overview

Field	Description
# of Digits in Subscriber	The number of digits in a phone number. For example,
Number	in the United States, subscriber numbers may have
	seven digits or ten digits depending upon the region.
Default LCR Table	The default least-cost routing table (LCR) for this site.
	This LCR table is used for all calls originating from
	devices associated with this site. The default is None.
Assignment Method	The ISDN number assignment method for the site.
	Possible values include:
	• No Auto Assignment. Select this option when
	ISDN numbers are not assigned to IP devices.
	• DID (Direct Inward Dial). Select this option when
	you assign a range of phone numbers received from
	the telephone company service.
	• Gateway Extension Dialing. Select this option
	when you have a single gateway phone number and
	a range of extensions (E.164 aliases) that are
	internal to the company. In this case, calls go
	through a gateway. Endpoints are differentiated by
	the extension at the end of the dial string.
	When a site is assigned an automatic assignment
	method, devices without an ISDN number are assigned
	one when they register. These numbers allow inbound
	calls to reach specific video endpoints. After an ISDN
	number is assigned to an endpoint, it is reserved for use
	as long as that endpoint remains registered with the
	CMA system.

		Note
		If you do not assign ISDN numbers automatically, you
		cannot call IP-only endpoints through an ISDN line.
	Territory	Assigns the site to a territory, and thus to a CMA
		system.
	Location	Specify the geographic location of the site either by
		longitude+latitude or country+city.
	ISDN Number Assignment—
	Assignment Method = DID (Direct Inward Dial)
	# Digits in Call Line	Enter the number of digits in the Call Line Identifier
	Identifier	(CLID), which is the dialed number. The maximum is 17.
		• For example, in the United States, the number of
		digits in the CLID is often 7 for outside local calls, 4
		for internal calls, or 11 for callers in a different area
		code.
		• This number indicates what part of the full dial string
		is sent to the gatekeeper for address resolution.
Polycom, Inc.		389