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:[EMAIL PROTECTED] Sent: Monday, February 23, 2004 3:41 AM To: [EMAIL PROTECTED] 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 _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users