NEC XN120 Getting Started Manual page 15

Use the telephone cables
supplied with the XN120 and
RJ45 sockets.
Connections:
XN120
ST socket
Pin 2 black
Pin 5 yellow
! The connections are polarity
sensitive - you must connect
as shown.
! Ensure that you use a twisted
pair for the console:
Pins 2 & 5 (data)
This will ensure that you can
reach the maximum cable
length of 300 metres.
! Identify the RJ45 socket with
its connection number (ST8)
and that it will have the 64
Button Console connected.
Also identify the connection
number of the XN120 system
phone that the console will be
used in conjunction with. This
will help you configure the
system later.
Note.
The 64 Button console uses
pins 2 and 5 (data pair) on the
XN120.
You will not cause any
damage if the console is
plugged into an RJ11 socket
that also has the speech pair
connected (pins 3 and 4 of the
RJ11 socket).
Refer to the separate section
within this guide for all other
information related to the 64
Button Consoles.
XN120 Getting Started Guide
Refer to the diagram above for the pin numbering of the XN120 RJ11
socket (ST8).
RJ45 socket
White/green
Green/white
Refer to Appendix A – 64 Button Consoles
Connect the Telephones
15