4.8.3
PESU Wiring
Refer to Chapter 7-Wiring Diagrams for PESU
details.
4.8.4
PESU
Programming Overview
Enter Code 25 in Program
03
for a non-optioned
PESU or Code 26 for a PESU supporting Off-hook
Call Announce. To program the PESU standard
telephone ports, see Subsection
4.5.4
(RSTU and
PSTU Programming Overview). To program the
PESU
electronic telephone ports, see Subsection
4.4.4
(PEKU Programming Overview).
Note:
If
there are
no
options, Program 03 can
be skipped, and Program 91 can be run
instead,
4.9
Four-Circuit loop Start
CO line
Unit (RCOU)
The standard RCOU PCB provides circuits for four
Loop Start CO lines.
An
RCOS PCB can be installed
on the RCOU for four more loop start lines (for a total
of eight lines-the RCOS circuits provide the same
options as the RCOU). The RCOU also provides ring
detection, dial outpulsing, and hold circuitry. Each
r
RCOS
CONNECTORS
RCOU line can be programmed for DTMF or dial pulse
signaling. Each
circuit has gas tube
secondary protection.
RCOU controls, indicators, and interface connectors
are shown in Figure 4-23 and described in Table
4-1
6.
RCOS controls, indicators, and interface
connectors are shown in Figure
4-24
and described in
Table
4-1
7.
4.9.1
RCOU Hardware
Options
The RCOU supports the following hardware options.
Internal Option
RCOS
Install the RCOS PCB in accordance with the following
procedure:
Remove the RCOS and the RCOU from their
protective packages.
BACKPLANE CONNECTOR
2
CO
LINE MODULAR
JACK CIRCUITS
JACK CIRCUITS
3
AND 4
1 AND2
CO LINE MODULAR
-
RCOS
CONNECTORS
Figure 4-23
RCOU Controls, Indicators, and Interface Connectors
4-32
January
1996
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