[Asterisk-Users] About Grandstream ATA-286 and ring voltage

[Nicolas Bougues]

Dear all,

My GS ATA-286, which otherwise work well, seem to be unable to ring a
fax (or at least, some kind of fax). The fax basically doesn't detect
the ring.

I measured with a volt meter about 45V during the ring pulse out of
the ATA. This looks fairly low to me (supposed to be in the 70V+
range, isn't it ?).

The adapter works with evey kind of phone I tried, but did not work
with two different fax machines. Am I simply out of luck with these
fax ? Does my ATA look defective (tried two of them, however) ?

--
Nicolas Bougues
Axialys Interactive