Hi, I am using libss7. I have TE420 with ss7 link to a Huawei m800 on one side and SIP on the other side of a gateway I have been using SVN-branch-1.6.0-r162806 and DAHDI Version: 2.0.0 with no problems. I had a gateway out for service so I did upgrade to SVN-branch-1.6.0-r191214 and DAHDI Version: SVN-trunk-r6513. Now I can still call from ss7 side to SIP with no problems but I get no audio if I call from SIP to ss7. Has anyone else seen issues like this on latest versions. A snip from /etc/asterisk/chan_dahdi.conf ss7type = itu ss7_called_nai=International ss7_calling_nai=International linkset = 1 pointcode = 0262 adjpointcode = 3261 defaultdpc = 3261 cicbeginswith => 2 networkindicator = national_spare sigchan => 1 group => 1 channel => 2-31 and from /etc/dahdi/system.conf span=1,1,0,ccs,hdb3 span=2,2,0,ccs,hdb3 span=3,3,0,ccs,hdb3 span=4,4,0,ccs,hdb3 bchan=2-31 dchan=1