Connecting the telephone system
26
Connection by using installation cable
In order to do so you will have to remove the cabinet cover (as shown above).
Connect one pair of wires each to the
corresponding screwing terminal pairs
1 through 8. Only used twisted pair
cable, type J-Y/ST/Y.
Here you can connect telephone ca-
ble with the other end connected to a
telephone wall outlet.
In Germany for this purpose tele-
phone wall outlets type TAE are be-
ing used.
As TAE outlets usually outlets with three jacks using NFN or NFF coding are avail-
able. N jacks are used for answering machines, fax, or modems, F jacks are used for
telephones.
With an NFN outlet the connectors are in a series circuit. This type of outlet is being
used in case there are two terminal units (answering machine, fax, or modem) and a
telephone are being used.
With an NFF outlet the left hand jack is N and the centre jack is F coded for a secon-
dary device and a telephone at one extension and the right hand side F coded jack is
meant for a second telephone of another extension.
For each analogue extension there are two connectors on the screwing terminal bar
of your telephone system, So, for each extension you will need two wires of the ca-
ble. Since there are telephone or network installation cables available with 4, 8, 12,
and 20 wired, you can also use one cable for a number of extensions.
At the TAE outlet both wires will be connected to pins 1 and 2 of a screwing terminal
bar at the top of an NFN outlet.
