What could be causing it? And another question: since chan_ss7 hasn't been updated in the last seven months, is there anyone there developing patches for it? My ss7.conf (two machines in a cluster) is below. Program terminated with signal 11, Segmentation fault. #0 0x00d11201 in isup_event_handler (event=0xb7b7caec) at l4isup.c:4017 4017 ast_log(LOG_DEBUG, "Got ISUP event, typ=%s, cic=%d, pvt.eq=%d \n", isupmsg(isup_msg.typ), isup_msg.cic, pvt->equipped); (gdb) bt #0 0x00d11201 in isup_event_handler (event=0xb7b7caec) at l4isup.c:4017 #1 0x00d1fa67 in cluster_receive_packet (senderix=0, fd=54) at cluster.c:570 #2 0x00d203bd in cluster_thread_main (data=0x0) at cluster.c:712 #3 0x004373db in start_thread () from /lib/libpthread.so.0 #4 0x0039126e in clone () from /lib/libc.so.6 [linkset-rp1] enabled => yes enable_st => no use_connect => yes hunting_policy => even_mru subservice => auto context => ss7 language => da t35 => 15000,timeout subservice => auto [linkset-rp4] enabled => yes enable_st => no use_connect => yes hunting_policy => even_mru subservice => auto context => ss7 language => da t35 => 15000,timeout subservice => auto [link-l1] linkset => rp1 channels => 1-15,17-31 schannel => 16 firstcic => 1 enabled => yes [link-l2] linkset => rp4 channels => 1-31 schannel => firstcic => 1 enabled => yes [link-l10] linkset => rp4 channels => 1-15,17-31 schannel => 16 firstcic => 129 enabled => yes [host-iv-si-mgt-01] enabled => yes default_linkset => rp1 opc => 0x3fce ; 16334 dpc => rp1:0x25cb,rp4:0x25cf ; 9675, 9679 links => l1:1,l2:2 if-1 => 192.168.40.106 [host-iv-si-mgt-03] enabled => yes default_linkset => rp4 opc => 0x3fce ; 16334 dpc => rp1:0x25cf,rp4:0x25cb ; 9679, 9675 links => l10:2 if-1 => 192.168.40.108 [cluster] ; Listen on TCP port 5040 port => 5040 l1 => iv-si-mgt-03#if-1 l2 => iv-si-mgt-03#if-1 l10 => iv-si-mgt-01#if-1