I've experienced this quite a few times, and after working with a local telco, it has become policy to not place ADSL on lines where fax is going to be used
I too have seen this, and also with credit card processing machines in shops that 'dial' the merchant bank to process transactions (in effect a modem).
It can sometimes (but not always) be resolved by running two microfilters in series on the 'voice' side of the line, i.e. line -> microfilter -> microfilter -> fax.
I've also (here in the UK) seen it resolved through the use of higher quality faceplate splitters rather than the often low-cost units supplied free with consumer ADSL modem/routers.
Kind regards, Chris -- This email is made from 100% recycled electrons -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
