I said: > I've tried isdn4linux (severe echo, reproducable on every > inbound call) and zaphfc (intermittent echo, disappears > within about 30 secs of the call starting).
Many thanks to those who replied. General consensus seems to be switching to mISDN or CAPI won't solve the intermittent echo problem. A follow-up with some more config information: Zaptel.conf span=1,1,3,ccs,ami bchan=1-2 dchan=3 span=2,1,3,ccs,ami bchan=4-5 dchan=6 loadzone=uk defaultzone=uk Zapata.conf: [channels] language = en pridialplan = dynamic nationalprefix = 0 internationalprefix = 00 switchtype = euroisdn signalling=bri_cpe_ptmp group=1 context=isdn channel => 1-2 switchtype = euroisdn signalling=bri_cpe_ptmp group=2 context=isdn channel => 4-5 echocancel=yes echocancelwhenbridged=yes echotraining=no ;echotraining=800 rxgain=0.0 txgain=0.0 immediate=yes I've tried echotraining off, on, 100, 400 and 800, none of which seem to help matters very much. Any suggestions for getting rid of echo on these lines would be gratefully appreciated. Regards, Chris -- C.M. Bagnall, Director, Minotaur I.T. Limited Tel: (07010) 710715 Mobile: (07811) 332969 Skype: minotaur-uk ICQ: 13350579 AIM: MinotaurUK MSN: [EMAIL PROTECTED] Y!: Minotaur_Chris This email is made from 100% recycled electrons _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users