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 > > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > -- Thank you with regards, Gopalakrishnan A.N. VoIP call - sip:[email protected] <sip%[email protected]>
-- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
