Avaya DEFINITY SERIES - Interfacing Circuit Packs

DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN
555-233-121
Issue 2
November 2000
SREPN Maintenance
2-5SREPN connections
2
Interfacing circuit packs
The Survivable Remote equipment can operate through:
■ ‘‘Expansion Interface connections’’
■ ‘‘DS1 CONV connections’’
Expansion Interface connections
■ TN570C Expansion Interface (EI) circuit packs use either the 9823A
(multimode) or the 300A (single mode) transceivers.
NOTE:
A new SREPN system includes the TN570C EI circuit pack. Earlier EI
circuit packs (for example, TN570B) are not supported.
DS1 CONV connections
■ TN1654 DS1 Converter supports T1/E1 remoting and wideband
applications.
■ Standard and High Reliability systems use pairs of TN1654, not mixed with
the earlier TN574.
■ Critical Reliability systems require TN1654 circuit packs on the duplicate
pair.