WIRING FOR TIE-LINE CONNECTION OF THE EXCHANGES
Each exchange can be connected by means of a cable with a diameter of 0.65mm (25.6 mils.) for a distance of up to
2km (5600 ft).
Regarding the tieline links which are not used, turn off the DIP switch of each unused tieline link inside the Tie-line
Unit TI-62.
Connect "T" line (2 wires) of the 4 wires of each link to "R" line (2 wires) of the other exchange.
The 2 wires of the "T" line and "R" line have no polarity.
If the BX-610/620 is used, its terminals No. 1 and 2 are for the "R" line and No. 3 and 4 are for the "T" line.
Exchange "A"
Exchange "B"
1. Wiring for tie-line connection of 2 exchanges
Exchange "A"
EX-2A
Exchange "B"
EX-2B
Note 1.
Any combination of tie-line links between exchanges "A" and "B" is possible. But, in conside-
ration of possible increase in the number of exchanges to be connected from 2 to 3 in the
future, we suggest you connect
6, 7) of exchange "B".
(link No. 4, 5,
(link No. 0, 1, 2, 3) of exchange "A" to
2. Wiring for tie-line connection of 3 exchanges
Exchange "A"
EX-3A
Exchange "C"
EX-3C
Exchange "B"
EX-3B
Connection of
to
or
to
will lead to failure of proper operation of the system.
3. DIP Switch selection
1. Switching arrangements of DIP switches
(E-1, E-2, E-3) in the CP-63 make each
exchange to be of "EX-1" or "EX-2A" or
"EX-2B" or "EX-3A" or "EX-3B" or "EX-
3C" type.
2. In the event of the tieline link not to be
used, turn off its corresponding DIP switch
on the TI-62 unit.
LINK No.
DIP Switch
TI-62 P.C.B.
— 8 —
Note 2. Be sure to connect
(link No. 0, 1, 2,3) to
(link No. 4, 5, 6, 7) between the exchanges.
