Connecting the telephone system
23
The first wall socket has to be connected to the internal S
0
port of the telephone sys-
tem by using an ISDN or network patch cable. Further wall sockets are used for
plugging in ISDN or system telephones.
With this type of bus outlets are in series. The last outlet gets termination resistors
installed. The other side of the bus is terminated within the telephone system (termi-
nation resistors are installed). The telephone system in this case is the start of the
bus.
As an alternative the telephone system may also be located in the centre of the bus.
For this at the wall socket at the telephone system two telephone or network cables
have to be connected. At the other end of both cables again there are one or more
wall sockets.
In this case the last outlets at both cables will have to carry termination resistors each
and the termination resistor of the S
0
port in the telephone system has to be re-
moved.
Note: At each S
0
port you can only operate one single Tiptel system tele-
phone.
Connection of ISDN telephones by using network cable
In case there is a network infrastructure with patch panel and network outlets close to
the telephone system you can also use this wiring for connecting ISDN or system
telephones.
Connect the S
0
port of your telephone system to the patch panel and connect the
ISDN or system telephone to the network outlet in the corresponding room. At the
telephone you will have to install a termination resistor.
In case you wish to connect two ISDN telephones to one S
0
port please use a two
port ISDN switch without termination resistors and connect this switch to you tele-
phone system. Connect both jacks of the switch with the two jacks of the patch panel
and the connect the telephones to the corresponding network outlets. At both tele-
phones you will have to install a termination resistor and the termination resistor at
the telephone system's S
0
port has to be removed.
Your specialist dealer can provide you with termination resistors
which can be plugged into the network jack and which have a jack
for connecting the telephone cable.
