OP50 Technical Reference and User Guide
13
Connecting OP50 To The Exchange:
Cabling of the first telephone to be connected to the KTS line of the
exchange:
1)
Free end of the “system data cable” is attached to the KTS port socket of the system.
2)
One end of the “telephone data cable” is attached to the connection box that is at the
end of the system data cable. The other end is connected to the OP50 telephone.
3)
Connection of the A-B wires of the corresponding extension is made to the connection
box. In order to do that, two wires taken from the corresponding extension connector of the
exchange are attached to the red and green points on the connection box.
NOTE: If the exchange is MS26C, MS38S or MS224, and if the first OP50 will be
connected to the operator, then connections of the extension wires should not be made,
because the A and B connections for the operator are also ready on the KTS sockets of
those exchanges. Additional realization of those connections may prevent the exchange
from operating.
4)
After the telephone has been connected, the extension settings should be done, as will
be explained in the next section.
Cabling of the telephone while there is another device connected to the KTS
line of the exchange:
1)
Parallel connection should be made from the connection box of the device that has
previously been connected to the KTS line to the wires that carry data (white), +12 VDC
(blue) and ground (black) signals and this connection should be made in the same order to
the connection box of the OP50 that is newly to be connected to the exchange.
NOTE: Short circuit or wrong order of the wires during the installation may result in
improper operation or malfunction of the exchange or the other devices that have been
connected to the KTS line.
2)
Then, extension connection to OP50 should be made. In order to do that, two wires
taken from the corresponding extension connector of the exchange should be attached to
the red and green points on the connection box of OP50.
3)
After the telephone has been connected, the extension settings should be done, as will
be explained in the next section.
IMPORTANT NOTE: If OP50 is to be connected over a distance longer than 5 meters, then
A-B (ring-tip) and serial data (KTS) wires should be carried over separate cables, one
should especially pay attention to employ shielded cables for long-distance installations of
serial data wires.
