4. The Example of connection of EX-620 exchange
YR-801 must be connected to J15 for EX-620 exchange (for 128 stations), or to J7
for EX-610 exchange (for 64 station)
"Exchange A"
EX-620
Terminal board
BX-620
Terminal board
BX-620
"Exchange B"
EX-620
YR-810
for stations
YR-801
for Tie-line
YR-810
for stations
YR-801
for Tie-line
The cables between the exchanges
(4 wires x 8 links)
"Exchange A"
BX-620 T1
"Exchange B"
BX-620 T1
EX-620
BX-620
J15
T1
EX-610
BX-610
J7
T1
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