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

[John Brown (CV)]

rumor has it that new firmware will let you adjust the 
ringer voltage on HT-286 / HT-486 


On Mon, Feb 23, 2004 at 09:41:24AM +0100, Nicolas Bougues wrote:
> 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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