Stephen Bosch
2007-Apr-20 08:26 UTC
[asterisk-users] adding second TDM400P card causes echo cancellation to fail for all Zap channels
Hi, folks: Yesterday I added a second TDM400P card to a working, echo-free server running HPEC. Today, I'm getting these messages:> Apr 20 09:12:12 WARNING[5679]: chan_zap.c:1551 zt_enable_ec: Unable to enable echo cancellation on channel 3along with complaints of severe echo. The channels have all been tuned using 'fxotune -s' and the echo numbers are all under 2%. I guess that Asterisk can't do echo cancellation on these channels. Why would I be getting this? Thanks, -Stephen-
Stephen Bosch
2007-Apr-20 08:56 UTC
[asterisk-users] adding second TDM400P card causes echo cancellation to fail for all Zap channels
Stephen Bosch wrote:> Hi, folks: > > Yesterday I added a second TDM400P card to a working, echo-free server > running HPEC. > > Today, I'm getting these messages: > >> Apr 20 09:12:12 WARNING[5679]: chan_zap.c:1551 zt_enable_ec: Unable to enable echo cancellation on channel 3 > > along with complaints of severe echo. The channels have all been tuned > using 'fxotune -s' and the echo numbers are all under 2%. I guess that > Asterisk can't do echo cancellation on these channels. > > Why would I be getting this?Maybe I would be getting this because I didn't have the zaphpec_enable in my system startup :) So -- for future reference, in case anybody else makes this mistake: zaphpec_enable has to run at boot time, after the zap modules are loaded. I'll go back to my corner now. -Stephen-