NEC XN120 User Manual page 13

Route the cables into the lower
side of the system. Use cable
ties to secure the cables.
Remove the breakouts of the
sub cover before re-fitting onto
the system.
OR
Use the telephone cables
supplied with the XN120 and
RJ45 sockets.
Connections:
XN120
ST socket
Pin 2 black
Pin 3 red
Pin 4 green
Pin 5 yellow
! The connections are polarity
sensitive - you must connect
as shown.
! Ensure that you use a
separate twisted pair for the
speech and data:
Pins 3 & 4 (speech)
Pins 2 & 5 (data)
This will ensure that you can
reach the maximum cable
length of 300 metres.
! Identify each RJ45 socket
with its connection number
(ST1 to ST8). This will help
you configure the system later.
XN120 Expansion Unit Guide
Refer to the diagram above for the pin numbering of the XN120 RJ11
sockets (ST1 to ST8).
RJ45 socket
White/green
Blue/white
White/blue
Green/white
Connect the Telephones
13