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FOR YOUR REFERENCE
TROUBLESHOOTING
FO
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11
ع
POTS/ISDN Port Fault
Telephone unable to
ޓ
send/receive signal.
Cable
ޓ
connected to
ޓ
POTS/ISDN
ޓ
port?
Connect it to
ޓ
POTS/ISDN
ޓ
port.
Cable
ޓ
properly connected to
ޓ
anphenol
ޓ
connector?
Cable connected
ޓ
to PHONE port of
ޓ
in-line filter?
Telephone
ޓ
able to send/
ޓ
receive
ޓ
signal?
Telephone
ޓ
able to send/
ޓ
receive
ޓ
signal?
Cable snapped?
Telephone
ޓ
able to send/
ޓ
receive
ޓ
signal?
Telephone
ޓ
able to send/
ޓ
receive
ޓ
signal?
Telephone
ޓ
able to send/
ޓ
receive
ޓ
signal?
Telephone
ޓ
able to send/
ޓ
receive
ޓ
signal?
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
Connect it properly
ޓ
to anphenol
ޓ
connector.
Replace in-line
ޓ
filter.
In-line filter fault.
Replace cable.
Check opposing
ޓ
apparatus.
Check setting
ޓ
and connection
ޓ
of telephone.
Connect it to
ޓ
PHONE port.
Equipment fault
Recovered
YES
YES
NO
NO
NO
A
YES
YES
A
YES
A
ޓ
Fig. 11-3 Fault Identification Procedure