Hi This is my system.conf : dynamic=loc,1:0,31,0 bchan=1-15,17-31 dchan=16 echocanceller=mg2,1-15,17-31 dynamic=loc,1:1,31,0 bchan=32-46,48-62 dchan=47 echocanceller=mg2,32-46,48-62 and this is my chan_dahdi.conf: [channels] signalling = ss7 ss7type = itu group = 1 linkset = 1 context = one slc=0 pointcode = 1111 adjpointcode = 2222 defaultdpc = 2222 cicbeginswith = 1 channel=1-15 sigchan = 16 group=2 linkset = 2 context = two slc=0 ; same slc=0 because of loop back pointcode = 2222 adjpointcode=1111 defaultdpc=1111 cicbeginswitch=1 channel=32-46 sigchan = 47 please tell me what is wrong in this configuration? Regards