WIRING FOR TIE-LINE CONNECTION OF THE EXCHANGES
Each exchange can be connected by means of a cable with diameter of 0.65mm (25.6 mils.) for 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
UnitTI-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-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
Tl1
Connector
J11
Exchange "A"
EX-2A
TI2
Connector
J12
TI1
Connector
J11
Exchange "B"
EX-2B
TI2
Connector
J12
Note 1. Any combination of tie-line links between exchanges "A" and "B" is possible.
Note 2. Mount only one Tie-line Interface unit when the number of tie-line links is within 8.
2. Wiring for tie-line connection of 3 exchanges
Note 1. TI-62 (T11) (connector J11) is the left-hand unit and TI-62 (TI2) (connector J12) is the right-
hand unit, when viewed from the front.
Note 2. Be sure to connect connector TI1(J11) to TI2U12) between the exchanges. Connection of TI1
(J11) to TI1(J11) or TI2(J12) to TI2(J12) will lead to failure of proper operation of the system.
BX-620
BX-620
Exchange "A"
EX-3A
TI2
(Connector-J12)
TI1
(Connector-J11)
Tie-line Interface Unit TI-62
YR-801
BX-620
BX-620
YR-801
Tie-line Interface Unit TI-62
Tie-line Interface Unit TI-62
BX-620
YR-801
Tie-line Interface Unit
Tl-62
4 wires
Tie-line Interface Unit TI-62
Tie-line Interface Unit TI-62
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