6.1.2 Connection
6.1.2 Connection
Can you dial
an extension?
Yes
Can you dial
out on a
trunk?
Connection between the PBX and an SLT:
CAUSE
No
The T/R is connected to the D1/D2.
T ●
R ●
PBX
Connection between the PBX and an SLT that is polarity-sensitive:
CAUSE
The "T" is connected to the "R".
T ●
R ●
PBX
Connection between the trunk and the PBX:
CAUSE
Trunk is connected to the T2/T1.
T ●
No
R ●
PBX
Trunk is connected to the T2/R1.
T ●
R ●
PBX
Use the correct cord (the
inner 2 wires are for T/R).
If a telephone equipped
●
● T
with an A-A1 relay is
● R
connected to the PBX, set
the A-A1 relay switch of the
●
Extension
telephone to "OFF".
Reverse the connections of
the T/R.
●
● T
● R
●
Extension
Reconnect the trunk to the
T1/R1 or T2/R2 of the
telephone jack using 2-
●
● T
conductor wiring.
● R
●
Extension
●
● T
● R
●
Extension
SOLUTION
SOLUTION
SOLUTION