Hii, I have 2 servers with dual core 3 GHz dual cpu with 2 GB RAM and having 2 * TE410P digium, total 8 port for inbound calling. using asterisk-1.6.2.9, dahdi-2.5, libss7 SVN latest version Both server has same setup, 8 E1's with 2 Signalling channels from same telco. follwoing is chan_dahdi.conf [channels] group=0 linkset = 1 signalling = ss7 ss7type = itu ss7_called_nai=national ss7_calling_nai=national context=ivrs pointcode = 2 adjpointcode = XXXXX defaultdpc = XXXXX networkindicator=national sigchan = 16 cicbeginswith=1 channel = 1-15 cicbeginswith = 17 channel = 17-31 sigchan = 47 cicbeginswith = 33 channel = 32-46 cicbeginswith = 49 channel = 48-62 cicbeginswith = 65 channel = 63-93 cicbeginswith = 97 channel = 94-124 cicbeginswith = 129 channel = 125-155 cicbeginswith = 161 channel = 156-186 cicbeginswith = 193 channel = 187-217 cicbeginswith = 225 channel = 218-248 following is the system.conf span=1,1,0,ccs,hdb3,crc4 bchan=1-15,17-31 mtp2=16 span=2,2,0,ccs,hdb3,crc4 bchan=32-46,48-62 mtp2=47 span=3,3,0,ccs,hdb3,crc4 bchan=63-93 span=4,4,0,ccs,hdb3,crc4 bchan=94-124 span=5,5,0,ccs,hdb3,crc4 bchan=125-155 span=6,6,0,ccs,hdb3,crc4 bchan=156-186 span=7,7,0,ccs,hdb3,crc4 bchan=187-217 span=8,8,0,ccs,hdb3,crc4 bchan=218-248 span=9,9,0,ccs,hdb3,crc4 bchan=249-279 span=10,10,0,ccs,hdb3,crc4 bchan=280-310 span=11,11,0,ccs,hdb3,crc4 bchan=311-341 span=12,12,0,ccs,hdb3,crc4 bchan=342-372 loadzone = in defaultzone = in Now one server working fine with 8 E1s in regular or heavy traffic of inbound. But in second server, its giving following warning at every 8-10 minutes [Feb 15 12:04:52] WARNING[13950] chan_dahdi.c: MTP2 link down (SLC 1) [Feb 15 12:04:52] WARNING[13950] chan_dahdi.c: MTP2 link down (SLC 0) Also when traffic is high, i.e. more than 220-230 calls, suddenly all calls get disconnected at same time. No other warning or error at that time, only above MTP2 link down message there. No flactuation in E1 media at my side or telco side. Please guide me to solve above problem. Bharat Lalcheta -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-ss7/attachments/20120215/ebf0ba17/attachment.htm>