I'm using zaptel on a x100p card, so my $0.02 may be apply, but I found that if I said echocancel=256 (256 taps), I would end up with horribly distorted outgoing audio (started off okay, but with bad echo, and after about 20 seconds most of the echo was gone but the audio was almost just noise).
I went back to 128 and it seemed okay. I haven't tried 64 but you may have more success with that, or a lower power of two. Good luck. James > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:asterisk-users- > [EMAIL PROTECTED] On Behalf Of Pisac > Sent: Sunday, 15 January 2006 14:57 > To: Asterisk Users Mailing List - Non-Commercial Discussion > Subject: [Asterisk-Users] Ugly echo cancel, with Bristuff/Zaphfc > > I'm using bristuffed Asterisk with ISDN/ZAPHFC > I have VERY ugly (outgoing) sound through ISDN/HFC if echocancel=yes in > zapata.conf, but without echocancel I have bad (incoming) echo > Through PSTN/FXO sound is ok with or without echocancel. > > I tried other echo cancellers (in zconfig.h) two times: > > ECHO_CAN_KB1 (this was default) > ECHO_CAN_MARK2 > ECHO_CAN_MG2 > > after any change I compiled (make clean all && make install) all drivers > which are bristuffed, without recompiling Asterisk (should I?), but... > > ... I always have EXACTLY same (ugly) sound and same (appearing of) echo > cancelling. > > Seems to me that echo canceller do not changing no matter what I choose > in zconfig.h. This must be some bristuff echo cancel "patch" to zaptel > source? Before I bristuffed Asterisk, I was playing with zconfig.h and I > remember that difference between echo canceller were very obvious. > > Anybody have some knowledge about bristuffed echo cancelling? > > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > Asterisk-Users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
