Lucent Technologies SLC-2000 Access System Central Office Terminal, Assembly Manual

Page: 148 / 284

3-82 Issue 5 May 1997
363-208-010
Cabling, Wiring, and Assembly
RT Input Alarms
General
NOTE
:
This procedure consists of installing the RT Input Alarms Customer Inter-
face Cable Assembly (ED7C723-35 Group 8) and mating its connector to
the Standard Bay Cable Assembly [ED7C723-34 Group 2()] which had
been installed earlier.
Pins 4 and 5 on this 6 pin connector are not assigned (Test 1 and Test 2).
The rest are brought out to the MDF for cross connections to the office
Major, Minor and Power Minor alarms.
Power Minor alarm is used to detect the loss of commercial ac power at the
RT. Major alarm is used to detect the failure of the external ringing supply
to the system. Minor alarm is used to detect a single rectifier failure in the
bulk power system (if applicable), or a single (protected) ringing generator,
or a cooling fan failure.
The MESGRD lead (pin 6) should be connected to a local quiet ground.
This point is required to provide a quiet measurement reference ground for
VF pair testing (ITH application).
Connections for ED7C723-34 Group 2
Step 1: Install the Alarm Interface Cable Assembly in the right duct and mate its
J304 connector with the P304 connector of the Standard Bay Cable
Assembly [ED7C723-34 Group 2()].
Step 2: Terminate the cable at the MDF and label the leads in accordance with
Figure 3-48.
Figure 3-48. Alarms Connections
Plug/Jack Top View
J304
P304
1
3
4
6
24 ga.
24 ga.
24 ga.
RTMJ
RTMN
RTPMN
J304
W/G
BL
W/R W/Y 24 ga
p/o ED7C723-35 G8 Cable Assembly
MESGRD