I understand that new TE412P interface card comes with VPMOCT128 echo-cancellation module. I already have a server installed with asterisk-1.2.17, zaptel-220.127.116.11 in production with TE412P card installed already and having VPM450 echo cancellation module and it works. I need to purchase a backup card. So, I just need to know whether zaptel driver which is installed in my server is compatible with new TE412P having VPMOCT128 echo cancellation module. Thanks in advance.