Switch Requirements; Switch Hardware; Switch Software - Avaya 6424D+M User Manual

DEFINITY Communications System
DEFINITY High Speed Link
User´s Guide

Switch Requirements

Appendix D: Applications and Switch Administration
Switched applications are supported on the following switches:
System 75 R1V2 or later,
System 85 R2V3 or later, and
DEFINITY Communications System Generics 1, 2, and 3.
It should be noted, that the level of functionality varies from
switch to switch and from release to release. The major difference
involves the type of network access arrangement that is
supported. For more details, consult the section on Network
Access Requirements in this Appendix.

Switch Hardware

HSL applications require a DCP port to interface with the switch.
Each Digital Line circuit pack (TN754 - S75, Generic 1, Generic 2
Universal Module; SN270B - S85, Generic 2 Traditional Module)
has eight DCP ports which can be used for both HSL and non-HSL
applications. If the application requires connectivity to another
switch or across a public network, a DS1 circuit pack (TN767 -
Generic 1, ANN11E - Generic 2) is also required.
Tone detectors are required to receive touch-tone signals and
detect call progress tones, modem answer-back tones,
transmission test tones, and noise. In switched applications, tone
detectors are used to indicate to the originating switch when the
HSL should be cut-through. On
System 85/Generic 2, the SN255B tone detector is available on the
Traditional Module and the TN748C is used on the Universal
Module. On System 75/Generic 1, the TN748C is used with the
exception of the System 75 XE and the Generic 1 Single Carrier
System where the TN756 and the TN768 are used, respectively.
Note: At peak traffic, the capacity of the tone detectors can be
exceeded resulting in intermittent call set-up failures. To
remedy this, additional tone detectors should be installed.

Switch Software

To allow the switch to properly route calls over a private network,
Automatic Alternate Routing (AAR) software is required.
Similarly, Automatic Route Selection (ARS) software is required
for public network routing.
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