Defining Extension Number For Op50; Number Of Op50S That Can Be Connected To The Exchange And Connection Distances - Karel OP50 Technical Reference And User's Manual

OP50 Technical Reference and User Guide

Defining Extension Number For OP50

At the first moment OP50 is connected to the exchange, the two-digit extension number is
displayed in the "Terminal no=aa" format. That number has been set as "11" as factory
default and it signifies the last two digits of the extension number.
If the data on the LCD display are changing upon lifting and replacing the handset, then
that indicates extension settings are correct. However, if those data are not changing, then
the extension number of OP50 must be set. In order to do that:
1) The "Park" key is pressed until the message "Terminal no=aa" appears on the display
(aa= a two-digit number – last two digits of the physical number of the extension.)
2) One proceeds by pressing the "Park" key in short whiles until the extension number that
is desired to be set appears on the LCD display.
3) When the desired number has appeared on the display, the handset is lifted and
replaced once. From then on, OP50 will operate at that defined extension.
NOTE: When number of another extension of the exchange is entered to OP50, the
speech channel is activated; however, the data line does not function.
Number Of OP50s That Can Be Connected To The Exchange And
Connection Distances
1) The OP50 telephones can be connected to the first 16 extensions of the exchange.
2) Number of OP50s that will be connected to the exchange and accessories using the
external data line of the exchange should not exceed 8 in total. The maximum number of
OP50 which will be connected to the system can be 8.
3) If "data / 12 VDC / ground" signals and the "A / B" wires are carried to OP50 over
separate cables, then an OP50 can be located at most 250 meters far from the exchange
in the event that ordinary cables are employed.
That distance would decrease as the number of feature telephone sets that are connected
to the exchange increase. For example, when 8 OP50s are connected to the exchange as
previously explained, the maximum allowed distance between the telephone sets and the
exchange drops to 25 meters.
In such a case, if the "12 VDC" signal amplitude of the last OP50 drops below +8.5 VDC,
then the performance may be improved by connecting a +12 VDC power supply between
12VDC and ground terminals.
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