Installation manual

APPENDIX 1
LED Indications (continued)
VDN Path Failure Indications:
The yellow Radio LED will flash to indicate a path failure.
LED slow flash VDN path fault. The radio path will not operate
PSTN Line Failure Indications:
The red PSTN LED will flash to indicate the type of line or communication
failure. If more than one type of failure is detected, the lowest number will be
displayed.
Regular slow
on-off flashing The NVM is blank or it is not programmed correctly.
1 flash PSTN telephone line DC voltage is very low or absent.
2 flashes Another phone (or fax, modem etc.) on the same PSTN line is off-
hook and may inhibit Dualcom from making a telephone call.
3 flashes Incoming ringing is detected and this may inhibit Dualcom from
making a telephone call.
4 flashes The regular dial-tone test has failed indicating that there may be a
PSTN line fault and this can inhibit Dualcom from making a tel-
ephone call. Check that the Service Provider is still providing a
service (paid the bill?).
5 flashes When Dualcom tried to make a telephone call, another phone
(or fax, modem etc.) on the same PSTN line was off-hook and
Dualcom could not make its call.
6 flashes When Dualcom tried to make a telephone call, incoming ringing
was detected, and Dualcom could not make its call.
7 flashes When Dualcom tried to make a telephone call it failed to hear a
dial-tone and could not make its call. See the Call Minder section.
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