[Asterisk-Users] TE411P Really Bad Echo

[Stagg Shelton]

I just implemented a system using a TE411P hardware echo cancellation
card.  Per Digium, I setup zaptel.conf, and zapata.conf the same way as
I always have.  To my surprise calls out to the PSTN had a terrible
echo. 1 - 2 second delay, and quite clear.  The echo was so bad that I
had to remove the hardware echo cancellation module from the card.  We
are only using the 1st span of this card right now, and we have a
tdm400p with 4 fxs modules installed as well.

If anyone has experience with this card, can you tell me if I am missing
something.

zaptel.conf
=================
span=1,1,0,esf,b8zs
bchan=1-23
dchan=24
#bchan=25-47
#dchan=48
#bchan=49-71
#dchan=72
#bchan=73-95
#dchan=96
fxoks=97-100
loadzone = us
defaultzone=us

zapata.conf
=================
context=from-pstn
switchtype=national
pridialplan=national
signalling=pri_cpe
faxdetect=incoming
usecallerid=yes
echocancel=yes
echocancelwhenbridged=no
echotraining=800
rxgain=3.0
txgain=0.0
group=0
channel=>1-23

;;;;;;[1103]
signalling=fxo_ks
record_out=Adhoc
record_in=Adhoc
mailbox=1103 at device
echotraining=800
echocancelwhenbridged=no
echocancel=yes
context=from-internal
callprogress=no
callerid=device <1103>
busydetect=no
busycount=7
channel=>98

;;;;;;[111]
signalling=fxo_ks
record_out=Adhoc
record_in=Adhoc
mailbox=111 at device
echotraining=800
echocancelwhenbridged=no
echocancel=yes
context=from-internal
callprogress=no
callerid=device <111>
busydetect=no
busycount=7
channel=>97


Thanks
Stagg
www.oneringnetworks.com