[Asterisk-Users] echo / delay problem

[Barry FAWTHROP]

I'm having with an echo or delay

I connect to the PSTN with a x100p  and then connect a std. phone
to a FXS module on a TDM10B.

The std phone is only 2-wire so I know this is not helping.
(yes I have read the 2-wire 4-wire issue)

I have tried many echocancel values. The best thing to help was
rxgain and txgain. below is my current zapata.conf file

All help would be grateful. I have tried and tried for 2 weeks
it is rather annoying and irating to hear this delay/echo

I would call it a delay since you can hear the end of the sentence repeat 
over
and over. Also every now and again  it sounds like a underwater submarine
with ping and all.


Thanks in advance
Barry



[channels]
language              = en
context               = inbound
signalling            = fxs_ks
usecallerid           = yes
hidecallerid          = no
callwaiting           = yes
usecallingpres        = yes
callwaitingcallerid   = yes
threewaycalling       = yes
echocancel            = 16
echocancelwhenbridged = yes
echotraining          = no  ;; yes
rxgain                = -2.0
txgain                = -2.0
musiconhold           = default
channel => 1


context               = intern
signalling            = fxo_ks
callwaiting           = yes
usecallerid           = yes
echotraining          = no ;; yes
echocancel            = 16
channel => 2