audio goes blank for a few seconds during the
conversation, and then comes back on in asterisk 1.4 with trunk as PRI line’
with the sangoma PRI card.
/etc/dahdi/system.conf
#Sangoma A101 port 1 [slot:13 bus:3 span:1]
span=1,1,0,ccs,hdb3
bchan=1-15,17-31
echocanceller=mg2,1-15,17-31
hardhdlc=16
and the chan_dahdi.conf is below
[trunkgroups]
[channels]
context=default
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
relaxdtmf=yes
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
immediate=no
;Sangoma A101 port 1 [slot:13 bus:3 span:1]
switchtype=euroisdn
context=from-pstn
group=0
echocancel=yes
signalling=pri_cpe
channel =>1-15,17-31