And, I'm not really familliar with libss7 config, BUT.. Don't you have to declare 4 links (or groups) under 1 linkset in your chan_dahdi.conf? in you current confi you have only 1 group. try something like this: linkset=1 group=1 sigchan=1 cicbeginswith=2 channels=2-31 group=2 sigchan= cicbeginswith=33 channels=1-31 ...... And so on. Regards -- Roman -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-ss7/attachments/20101129/0afda2f9/attachment.htm