I discussed this with sangoma support in the past. Sangoma says, it
is NOT recommended to disable echo cancellation there.
Am 04.02.2011 10:53, schrieb Gopalakrishnan A.N:
It seems to be you are using Sangoma T1/E1 card with
echo cancellation. If I am not wrong there is a parameter for echo
cancel in the card configuration, try disabling that because
already you have enabled echo cancel in dahdi file.
Hope it help.:)
On Fri, Feb 4, 2011 at 11:11 AM, DHAVAL
INDRODIYA <[email protected]>
wrote:
Hi All,
This posting regarding PRI voice optimization, on dahdi
2.1.0.4.
we have more than 4 machine running on 4 port PRI card with
echo cancellation hardware based.
i have enabled echo cancel from chan_dahdi.conf using
echocancel=yes, now more than 70% of call get good voice
but some of calls having issue for callquality and other
voice related issues. now my question is that is there
any voice related parameter that we need to set for INDIA
specific region and is ther any voice hardware tester for
PRI
that we can use and tell us our PRI [telco] provider that
problem is not from our side. let give some idea . below are
my configuration as well.
# Autogenerated by /usr/local/sbin/genzaptelconf -- do not
hand edit
# Zaptel Configuration File
#
# This file is parsed by the Zaptel Configurator, ztcfg
#
# It must be in the module loading order
# Global data
loadzone = in
defaultzone = in
span = 1,0,0,ccs,hdb3
bchan = 1-15
dchan = 16
bchan = 17-31
span = 2,0,0,ccs,hdb3
bchan = 32-46
dchan = 47
bchan = 48-62
span = 3,0,0,ccs,hdb3
bchan = 63-77
dchan = 78
bchan = 79-93
span = 4,0,0,ccs,hdb3
bchan = 94-108
dchan = 109
bchan = 110-124
[channels]
language=en
context=from-pstn
switchtype=euroisdn
pridialplan=local
prilocaldialplan=local
signalling=pri_cpe
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
cancallforward=yes
callreturn=yes
relaxdtmf=yes
echocancel=yes
echocancelwhenbridged=yes
echotraining=yes
resetinterval=never
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1
immediate=no
group = 0
channel => 1-15
channel => 17-31
channel => 32-46
channel => 48-62
channel => 63-77
channel => 79-93
channel => 94-108
channel => 110-124
|
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