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Aria-130 Digital Key Telephone System
Issue: 1.2
Installation Manual
110
3.5.6.3 EMIB wiring
You don't need to consider the polarity of 2 voice wires(for both transmit and receive path in 2 wire E&M
or transmit path and receive path respectively in 4 wire E&M), but you should connect the Ear wire(-48V)
of one system to the Mouth wire(open in the idle state) of the other system and the Mouth wire(open) of
one system to the Ear wire(-48V) of the other system.
Both systems should be connected to common ground.
The pin assignment of the champ connector(CN3)
The pin number
The assignment
Remark
A1
1RX_A
B1
1RX_B
A2
1TX_A
Used for the Port 1
B2
1TX_B
A3
1E
B3
1M
A4
2RX_A
B4
2RX_B
A5
2TX_A
Used for the Port 2
B5
2TX_B
A6
2E
B6
2M
The pin number
The assignment
Remark
A7
3RX_A
B7
3RX_B
Used for the Port 3
A8
3TX_A
B8
3TX_B
A9
3E
B9
3M
A10
4RX_A
B10
4RX_B
A11
4TX_A
Used for the Port 4
B11
4TX_B
A12
4E
B12
4M
A13~A25
Not used
B13~B25
Not used