Peripheral Equipment cards
43
NT8DlGAA Digitone Receiver
System Hardware-All
Purpose--Provides a total of eight channels of Dual Tone Multi Frequency
(DTMF) detection. These channels are assigned on the DS30X loop. There
is one 8 Kbps signaling channel provided for maintenance messaging and
tone reporting.
The NT8D16AA
Digitone
Receiver allows access to the filters for
parameter alterations in order to service different environments (e.g.
international applications).
Quantity-Refer
to System engineering
(553-3001-151) for engineering
details.
QPC62 1.5 Baud Converter
System Hardware-System
option 21/51/61/71
Purpose-Used
for Remote Peripheral Equipment (RPE) applications.
Converts an Sl-1 loop into two carrier loops. Used with 1.5 Mb/s Remote
Peripheral Equipment (RPE). Contains switch-selectable line equalizers.
Note:
QPC62F or later vintage is required.
.-
Quantity-Two
for each network loop, one in the local module and one in
the remote module
QPC63 Local Carrier Buffer
System Hardware-System
option 21/51/61/71
Purpose-Used for RPE applications. Performs the following functions:
-
Generates from the 2.048 MHz clock a 1.544 MHz clock
-
Decodes and provides enables for outgoing and incoming data
-
Delays the data incoming from the carrier so that its frame relative to
the outgoing data frame is equivalent to that returning from a peripheral
buffer
Equipment identification and ordering information 553-3001-154