Distorting Lines

ferdinandbabst

Joined
Mar 23, 2010
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#1
Hi

I have an Elastix PBX at a site using a Digium TE122 PRI Card.
The card uses that DAHDI Interface

The card is also setup as a slave and is using DSS1 Euroisdn with CRC4 as per the spec of the telco company

All works well.

My problem is this:

At random intervals when making a call to an external party or receiving a call from external number a distortion is heard on the audio of the external party

The external user can hear the internal caller fine but the external caller's audio (voice) is distorted. This is not the case at all times and a reboot of the box temp fixes the problem.

I have reinstalled Elastix twice on different hardware but the problem keeps coming back

Any ideas of what can cause this.

I have included my chan_dahdi.conf and system.conf files:


chan_dahdi.conf

[trunkgroups]

[channels]
;context=from-pstn
;context=from-zaptel
;context=external

pridialplan=local
prilocaldialplan=local
;internationalprefix = 00
;nationalprefix = 0

;signalling=fxs_ks
signalling=pri_cpe
signaltype=euroisdn
;signaltype=dss1

;useincommingcalleridonzaptransfer=yes

;rxwink=300 ; Atlas seems to use long (250ms) winks
usecallerid=yes
hidecallerid=no
callerid=asreceived
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=no
faxdetect=no
;echotraining=800
rxgain=0.0
txgain=0.0
callgroup=1
pickupgroup=1

system.conf

# Span 1: WCT1/0 "Wildcard TE122 Card 0" (MASTER)
span=1,1,0,ccs,hdb3,crc4
# termtype: te
bchan=1-15,17-31
dchan=16
echocanceller=oslec,1-15,17-31

# Global data

loadzone = za
defaultzone = za
 

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