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4.1 Troubleshooting
114 Installation Manual
Connection between the central office and the PBX:
CAUSE
CO line is connected to the T2/T1.
CO line is connected to the T2/R1.
SOLUTION
Reconnect the CO line to
the T1/R1 or T2/R2 of the
telephone jack using
2-conductor wiring.
T2
R1
T1
R2
CO line PBX
PBX
CO line
T2
R1
T1
R2
(Continued from the
previous page.)
Can you dial
out on a
CO line?
No