Chapter 2 - Blade Installation and Startup
Chapter 2 2 - 65
2.7.1.2 Connector Pin-Outs on COIU Blade
2.7.1.3 Installing the Analog Trunk Blade:
1. Install the COIU into any available slot.
● Use Program 14-02-14 to set the trunks as loop or ground start. Loop and ground starts
can be combined on one blade.
For details on the connections for power failure trunks, refer to "Section 4-16 POWER FAILURE
TERMINALS" on page 4-65.
RJ61 Cable Connector - CN2, Trunks
The CN2 connector is polarity sensitive (tip to tip, ring to ring) for
ground start trunks.
Pin No. Connection
1 Circuit 4 - Tip
2 Circuit 3 - Tip
3 Circuit 2 - Tip
4 Circuit 1 - Ring
5 Circuit 1 - Tip
6 Circuit 2 - Ring
7 Circuit 3 - Ring
8 Circuit 4 - Ring
RJ61 Cable Connector - CN3, SLT Interface for Power Failure
Pin No. Connection
1-
2-
3 Circuit 2 - Tip
4 Circuit 1 - Ring
5 Circuit 1 - Tip
6 Circuit 2 - Ring
7-
8-
12345678
12345678
● If the 4COIDB is to be used, install this prior to inserting the COIU blade into
the chassis.
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