Hi everyone, I have the following annoying problem with my Digium TE410 Quad-Pri-Card: I sometimes hear strange noises on bridged calls from our PBX to the PSTN (a colleage called it "clipping"?) We have the following setup running: PSTN <-> Asterisk <-> od PBX (Trunk one to the PSTN, Trunk two to our existing PBX) Currently our System does not really do quite a lot, since almost every call is currently terminated on the old PBX. Here comes my zaptel.conf: span=1,1,0,ccs,hdb3,crc4 span=2,0,0,ccs,hdb3,crc4 bchan=1-15,17-31 dchan=16 bchan=32-46,48-62 dchan=47 loadzone=nl defaultzone=nl And my zapata.conf (comments removed) [channels] faxdetect=none language=de context=default switchtype=euroisdn pridialplan=unknown overlapdial=yes signalling=pri_cpe usecallerid=yes hidecallerid=no callwaiting=yes restrictcid=no usecallingpres=yes callwaitingcallerid=yes threewaycalling=yes transfer=yes cancallforward=yes callreturn=yes echocancel=no echocancelwhenbridged=no (we turned the echo-canceling of, because we had problems while sending/receiving faxes) echotraining=yes rxgain=0.0 txgain=0.0 group=1 callgroup=1 pickupgroup=1 immediate=no musiconhold=default signalling = pri_cpe group = 1 pridialplan=unknown musiconhold=default context = incoming channel => 1-15,17-31 signalling = pri_net group = 2 pridialplan=local musiconhold=default context = from_pbx channel => 32-46,48-62 In my extensions.conf i use some PHP-AGI Skripts for dialing and call-processing. I hope someone can give me a hint what to do/improve or what to search for. So far i did not find anything useful on the net.... Thanks in advance, Carsten Bock