NEC XN120 - Page 13

Connect the Telephones
XN120 Expansion Unit Guide 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
RJ45 socket
Pin 2 black White/green
Pin 3 red Blue/white
Pin 4 green White/blue
Pin 5 yellow Green/white
! 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.
Refer to the diagram above for the pin numbering of the XN120 RJ11
sockets (ST1 to ST8).