6- Connect The Exchange Lines - NEC XN120 User Manual

6- Connect the Exchange Lines

The exchange lines can be connected to any of the three RJ11 sockets labelled CO1 to CO3.
Make a note of each exchange line number (i.e. the number dialed to ring the line) and its CO connection to the
XN120. You will need this when you configure the XN120.
XN120 CO Exchange line dialing number
number (e.g. 01509 643100)
CO1
CO2
CO3
! Check Power Fail Operation later in this guide, CO1 can be used to provide a working telephone should the
power be disconnected from the XN120.
Precautions for Cabling:
· Do not run the cable with a power cable, computer cable etc.
· Do not run the cable near any high frequency generating equipment.
·
Use cable protectors if the cables are run on the floor.
·
Aerial distribution wiring is not allowed.
·
Use lightning protectors for each exchange line.
Use the cables supplied with
the XN120.
OR
Use pre-formed telephone
cables (not supplied).
Connections:
XN120
CO socket
3 red
4 green
! The connections are not
polarity sensitive.
XN120 Expansion Unit Guide
The exchange line cables supplied with the XN120 can be used to
connect to the lines supplied by your Network Provider.
! Ensure each line has a lightning protection device included.
If the exchange lines are terminated with an LJU you can use a
separate pre-formed cable to connect each line to a CO socket of the
XN120 expansion unit.
· Ensure that you connect the 2 wires as shown otherwise the line
will not operate correctly.
· Use CW1308 or similar telephone cable.
·
Fit lightning protectors to each line.
LJU socket
2
5
Exchange
line point
5 2
431A
telephone
plug
Connect the Telephones
XN120 RJ11
socket
(CO1-CO3)
RJ11 plug
4 3
4 3
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