Aristel
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System Installation manual
Aristel
,
the
B
est
in Telecommunications
28
5.5 Key Telephone (A8MBUA ) Wiring
This system use 4 Wires for key phone station. Below is the wiring
method. The wiring method of A8EPUA is similar toA8MBUA’s.
Chart 5-5 Key Telephone Installation
Description:
1
This board
A8MBUA
can connect to at most 8 Key Phone Station.
2
ST1
~
ST8
Key Phone Station Port.
3
4 Wires for key phone station, as shown at above chart.
4
4-Wire RJ11 connector to be used, from left to right, including BT, AR, AT,
BR.
5
AT/AR is the audio pair; AT = Transmission (Green Color), AR =Receiving
(Red Color).
6
BT/BR is the Data/Power pair; BT = (-) Pole and Data Receiving (Black
Color), BR = (+) Pole and Data Transmission (Yellow Color).