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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Features and technical reference
1133Administered Connections
20
Related topics
Refer to ‘‘
Using access security gateway’’ on page 319 for instructions.
Administered Connections
An Administered Connection (AC) is a connection between 2 access or data
endpoints. DEFINITY ECS automatically establishes the connection based on the
attributes you administer. An AC provides the following capabilities:
■ Support of both permanent and scheduled connections
■ Auto Restoration (preserving the active session) for connections routed
over Software Defined Data Network (SDDN) trunks
■ Administrable retry interval (from 1 to 60 minutes) per AC
■ Administrable alarm strategy per AC
■ Establishment/retry/auto restoration order based on administered priority
Detailed description
The SDDN provides virtual private-line connectivity using the AT&T Switched
Network. Access to the service is provided via an Integrated Services Digital
Network (ISDN) trunk group whose Service Type field is
SDDN. The system uses
the Destination field on the Administered Connection screen to route calls when
AC is active, based on associated authorized time-of-day fields.
Establish an AC between the following:
■ Two endpoints on the same switch
■ Two endpoints in the same private network, but on different switches
■ One endpoint on the controlling switch and another endpoint off the private
network
In all configurations, administer the AC on the switch that has the originating
endpoint. For an AC in a private network, if the two endpoints are on two different
switches, normally the connection routes via Automatic Alternate Routing (AAR)
through tie trunks (ISDN, DS1, or analog tie trunks) and intermediate switches. If
required, route the connection via Automatic Route Selection (ARS) and
Generalized Route Selection (GRS) through the public network. The call routes
over associated ISDN trunks. When the far-end answers, a connection occurs
between the far-end and the near-end extension in the Originator field on the
Administered Connection screen.