Appendix A Interface Connector Specifications FOM-E1/T1 Installation and Operation Manual
A-2 FOM-E1/T1/R Modem Card
CBL-E1T1/RJ45 Cable
RAD offers an optional splitter cable, CBL-E1T1/RJ45, which connects the DB-15
female connector of the standalone unit to the balanced E1/T1 device and alarm
equipment.
The CBL-E1T1/RJ45 cable includes two DB-15 connectors (male and female) and
one RJ-45 connector. Figure A-1 illustrates the cable schematics.
Male DB-15 Connector
(FOM-E1/T1 Side)
1RCV (RTIP)
RCV (RTIP)
RCV (RRING)
RCV (RRING)
TRM (TTIP)
TRM (TTIP)
TRM (TRING)
TRM (TRING)
1
1
2 2
2
3 3
3
4 4
4
5 5
5
6 6
6
7 7
7
8 8
8
9 9
10 10
11 11
13 13
14 14
15 15
12 12
Female DB-15 Connector
(Alarm Equipment Side)
Twisted
Twisted
RJ-45 Connector
(E1/T1 Balanced Equipment Side)
Figure A-1. CBL-FOME1T1/RJ45 Scheme
A.2 FOM-E1/T1/R Modem Card The 25-pin D-type female connector located on the rear panel of the
ASM-MN-214 modem rack serves as an alarm relay port. Table A-3 lists the
functions of the DB-25 pins.
Table A-3 ASM-MN-214, DB-25 Pin Assignment
Pin Contact Alarm Type
10, 22 Normally Closed
10, 21 Normally Open Minor
13, 25 Normally Closed
13, 24 Normally Open Major