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46 Peripheral Equipment cards
QPC99
Carrier Interface
-
System Hardware-System
option
21/51/61/71
Purpose-Used
for RPE applications. Contains two carrier line receivers
with
7.5 dB pads built-in. Converts bipolar line signals into
TIL
level
signals. Provides facilities for carrier looping. Monitors system and
invokes emergency transfer if carrier fails.
Note:
QPC99F or later vintage is required.
Quantity-Two
per network loop
QPCI 92 Off-Premises Extension Line
System Hardware-All
Purpose---The
Off-Premises Extension (OPX) line circuit interfaces with
500/2500-type sets in p-Law applications. The loop range from the PE
Module to station apparatus is 1400
SL
excluding the set. This trunk may
also be used when the line-to-line loss required is less than 5
dE%.
Refer to
50012500 line packs-Description and operation
(553-2201-183)
for more
information.
Quantity-One per two
OPX lines
.-
QPC237 4-wire E&M/DX signaling trunk
System Hardware-All
Purpose!-Used in p-Law applications in one of the following modes to
interface with appropriate types of trunk facilities:
-
E&M Signaling, 2-way dial repeating trunk
-
4-wire DX signaling, 2-way dial repeating trunk (QPC237A/E% only)
Each trunk card has two sepamte, identical trunk circuits with a balanced
terminating impedance of 600
Sz.
Trnnk usage options are selected by
option switches on the pack. Refer
to Four-wire E&MIDX trunk circuit
description
(553-2001-190).
Note:
QPC237D or later vintage is required.
Quantity-Maximum of 10 cards per
NT8D13
PE Module
Equipment identification and ordering information 553-3001-154
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