Avaya IP600 manual Network interfaces and equipment, Trunk group circuits

Network interfaces and equipment 11

Network interfaces and equipment

Avaya IP600 supports a variety of interfaces to voice and data networks. Trunks supply links between Avaya IP600, the public network, and other switches. DS1 interfaces offer high-speed digital connectivity between switches.

Trunk group circuits

Trunks provide the communications links between Avaya IP600 and other switches, including central office switches and other premises switches. Trunks that perform the same function are grouped together and administered as trunk groups. Trunks interface with Avaya IP600 via port circuit packs. Avaya IP600’s trunk group circuit types include the following:

Local exchange trunks Local exchange trunks connect Avaya IP600 to a central office. The following are some of the types available:

• Central office trunks, which connect Avaya IP600 to the local central office for incoming and outgoing calls

• Foreign exchange trunks, which connect Avaya IP600 to a central office other than the local one

• Wide Area Telecommunications Service trunks, which allow you to place long- distance outgoing voice-grade calls to telephones in defined service areas, priced according to distance in the service area, length of the call, time of day, and the day of the week

• 800-service trunks, which let your business pay the charges for inbound long- distance calls so that callers can reach you toll-free

• Direct Inward Dialing (DID) trunks, which connect Avaya IP600 to the local

	central office for incoming calls dialed directly to stations without attendant
	assistance
	• Digital Service 1 (DS1) trunks, which can be used to provide ISDN Primary Rate
	Interface local exchange trunk services. DS1 by itself can be used to provide local
	exchange trunk services
Tie trunks	Tie trunks carry communications between Avaya IP600 and other switches in a
	private network. Several types of trunks can be used, depending on the type of private
	network you establish.
Auxiliary trunks	Auxiliary trunks connect devices with the switch. Some of the features that are
	supported with this type of trunk are recorded announcements, telephone dictation
	service, malicious call trace, and loudspeaker paging.

	Overview for Avaya IP600 Internet Protocol Communications Server
90	555-233-001 — Issue 5 — November 2000