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Electronic Tandem Network
10-11
Overview
555-233-001 — Issue 2 — November 2000
10 Networking
An important DEFINITY ONE networking feature is Main/Satellite Extended Trunk
Access. Extended Trunk Access allows dialed digits that are undefined at a satellite or
tributary switch to be routed over a trunk group to a main switch for interpretation.
This flexibility means changes to the network numbering plan do not have to be
propagated to all switches. Extended Trunk Access improves your control and
reduces administration costs by making trunk networks considerably easier to
maintain.
Electronic Tandem Network
If your company requires a medium-to-large network spanning a large geographic
area, nationwide or even worldwide, Electronic Tandem Network (ETN) is the
answer. An ETN is a wide-area private network that tandems calls through one or
more switches to route the calls to their destinations.
An ETN consists of tandem switches, inter-tandem tie trunks that interconnect them,
access or bypass trunks from tandem switches to main switches, and the software and
equipment to support call routing over the trunking facilities. Different ETN locations
are connected via analog or digital tie trunks. For example, a DS1 interface can act as
a high-speed (1.544 Mbps) digital backbone for voice and data communications
between ETN locations.
An ETN can be configured hierarchically. An ETN can connect individual switches;
it can also connect other private networks (such as Main/Satellite/Tributary networks)
together.
Within an ETN, each location is identified by a unique private network location code,
similar to the public network office codes that exist within an area code. When
accessing the ETN, a user dials a feature access code for the Automatic Alternate
Routing feature plus the 7-digit number, for a total of eight digits.
Starter application package
The Networking Starter Package includes the hardware and software you need to
provide consistent, enhanced communications among multiple company locations
cost effectively. Depending on your business needs, you can select a networking
package to provide centralized voice mail, remote call coverage, interoffice Calling
Party/Called Party displays, and other productivity-enhancing features.
Call your Sales Representative for details.