User's Manual

Trailblazer Installation and User Manual version 1.02 13
Connecting POTS lines, Repeater, and Sync
For durability as well as ease of installation and acquisition, repeater and
synchronization cables require standard RJ45 connectors and CAT5 cable using
standard Ethernet cable wiring. Remember to feed the CAT5 cable through the
weatherproof cord grips before terminating the ends. In addition to the RJ45
connector, there are (4) screw terminals for synchronization. Wire SYNC OUT to
SYNC IN and vice versa.
2.3.4 Connecting the Leased Lines
The Leased Line interface is provided on two standard 50 pin female Centronics
connectors. The connector 1 contains the audio and E&M signaling for lines 1
through 4, and connector 2 contains the audio and E&M signaling for lines 5
through 8. See figure below for pin out information:
Connector pin-out:
Connector 1 Connector 2
Pin Signal Pin Signal
1 Transmit Audio 1+ 1 Transmit Audio 5+
26 Transmit Audio 1- 26 Transmit Audio 5-
2 Ground 2 Ground
27 Transmit Audio 2+ 27 Transmit Audio 6+
3 Transmit Audio 2- 3 Transmit Audio 6-
28 Ground 28 Ground
4 Transmit Audio 3+ 4 Transmit Audio 7+
29 Transmit Audio 3- 29 Transmit Audio 7-
5 Ground 5 Ground
30 Transmit Audio 4+ 30 Transmit Audio 8+
6 Transmit Audio 4- 6 Transmit Audio 8-
31 Ground 31 Ground
7 Receive Audio 1+ 7 Receive Audio 5+
32 Receive Audio 1- 32 Receive Audio 5-
8 Ground 8 Ground
33 Receive Audio 2+ 33 Receive Audio 6+
9 Receive Audio 2- 9 Receive Audio 6-
34 Ground 34 Ground
10 Receive Audio 3+ 10 Receive Audio 7+
35 Receive Audio 3- 35 Receive Audio 7-
11 Ground 11 Ground
36 Receive Audio 4+ 36 Receive Audio 8+
12 Receive Audio 4- 12 Receive Audio 8-
50 Pin Centronics Connecto
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