Nortel Networks Circuit Card - Manual (Page 29)

Overview Page 29 of 906
Circuit Card Description and Installation
NT1R20 Off-Premise Station Analog Line card
The NT1R20 Off-Premise Station (OPS) Analog Line card is an intelligent
eight-channel analog line card designed to be used with 2-wire analog
terminal equipment such as analog (500/2500-type) telephones and analog
modems. Each line has integral hazardous and surge voltage protection to
protect the system from damage due to lightning strikes and accidental power
line connections. This card is normally used whenever the phone lines have
to leave the building in which the switch is installed. The OPS line card
supports message waiting notification by interrupting the dial tone when the
receiver is first picked up. It also provides battery reversal answer and
disconnect analog line supervision and hook flash disconnect analog line
supervision features.
NT5D11 lineside T1 interface card
The NT5D11 lineside T1 Interface card is an intelligent 24-channel digital
line card that is used to connect the switch to T1 compatible terminal
equipment on the lineside. T1 compatible terminal equipment includes voice
mail systems, channel banks containing FXS cards, and key systems such as
the Nortel Norstar. The lineside T1 card differs from trunk T1 cards in that it
supports terminal equipment features such as hook-flash, transfer, hold, and
conference. It emulates an analog line card to the system software.
NT5D33 and NT5D34 Lineside E1 Interface card
The NT5D33/34 Lineside E1 Interface card is an intelligent 30-channel
digital line card that is used to connect the switch to E1 compatible terminal
equipment on the lineside. E1 compatible terminal equipment includes voice
mail systems. The lineside E1 card emulates an analog line card to the system
software.
NT8D02 digital line card
The NT8D02 Digital Line card is an intelligent 16-channel digital line card
that provides voice and data communication links between a CS 1000S,
CS 1000M, and Meridian 1 switch and modular digital telephones. Each of
the 16 channels support voice-only or simultaneous voice and data service
over a single twisted pair of standard telephone wire.