Nt1R20 Off-Premise Station Analog Line Card; Overview; Physical Description - Nortel Enterprise 1000 Reference Manual

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NT1R20 Off-Premise Station Analog Line Card

Overview

Physical description

553-3023-211 Standard 1.00 June 2001
Analog line cards
Technical summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Analog line interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Power requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Foreign and surge voltage protections . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Overload level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
The NT1R20 Off-Premise Station (OPS) analog line card provides eight full
duplex analog telephone line interfaces used to connect off-premise terminals
to the Succession Communication Server for Enterprise (CSE) 1000 system.
Each interface provides the external line connection with secondary hazard
and surge (lightning) protection.
Up to three analog line cards can be installed in each Media Gateway. Up to
four analog line cards can be installed in each Media Gateway Expansion.
The NT1R20 analog line card can be installed in Slot 1, 2, and 3 of the Media
Gateway and Slot 7, 8, 9, and 10 of the Media Gateway Expansion.
The NT1R20BA OPS analog line card provides:
• line supervision
• hookflash
• battery reversal
Each unit is independently configured in software in the analog
(500/2500 type) telephone Administration program LD 10.
The NT1R20 card measures 31.75 by 25.40 cm. (12.5 by 10 in.). It connects
to the backplane through a 160-pin connector shroud. A 25-pair amphenol
connector below the card is cabled to the cross-connect terminal. Telephone
lines from station equipment cross-connect to the OPS analog line card at the
cross-connect using a wiring plan similar to trunk cards.