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DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
Data Modules
21-54The DEFINITY High Speed Link
21
Permanent (Private Line) Requirements
The following sections describe Permanent (Private Line) requirements.
Releases for Permanent Applications
Permanent applications require the switch to establish and maintain the
connection. The switch release and corresponding feature that support
permanent connections are:
■ System 75 R1V2 or later - Permanent Switched Call (PSC)
■ System 85 R2V4 or later - Dedicated Switch Connection (DSC)
■ DEFINITY Generic 1 - Administered Connection (AC) or Permanent
Switched Call (PSC)
■ DEFINITY Generic 2 - DSC
■ DEFINITY Generic 3 and the DEFINITY ECS - AC
These various switch features provide different levels of support for permanent
applications. The DEFINITY G3 and DEFINITY ECS provide the broadest level of
support with the Administered Connection Feature. The Permanent Switch Call in
System 75 and DEFINITY G1 and the Dedicated Switch Connection in System 85
and DEFINITY G2 provide a subset of that functionality.
Permanent Endpoints
If DTE does not support the DTR lead, then the DTR IGNORE option must be
used. This will allow a permanent connection to be established and maintained.
Permanent Applications
A permanent connection uses a DS0 channel on a private T1 between sites, or a
DS0 channel on a DS1 to a private digital network such as ACCUNET Spectrum
of Digital Services (ASDS). See Figure 21-18 for an example of a Front End
Processor/Cluster Controller application in a permanent connection configuration.
For additional information on permanent applications, implementations, and
administration, refer to the
DEFINITY High Speed Link User’s Manual
,
555-020-711, Appendix D: Applications and Switch Administration.