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

[mattf]

The only adapter that I know of that allows you to modify the ring voltage
is the Sipura analog SIP adapter. I was able to get my old fax machine to
answer after jacking up the ring voltage to 90V. http://www.sipura.com

MATT---


-----Original Message-----
From: Nicolas Bougues [mailto:nbougues-listes at axialys.net]
Sent: Monday, February 23, 2004 3:41 AM
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] About Grandstream ATA-286 and ring voltage


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
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