Hello all, I am trying to setup chan_ss7 with asterisk version 1.2.12 but chan_ss7 is crashing asterisk. Please see asterisk log and back trace from a core dump. Please let me know if you need a further assistance. Asterisk Ready. *CLI> Feb 26 16:34:51 NOTICE[25149]: mtp.c:1098 mtp2_good_frame: Using subservice field from incoming MSU: 0x8 Segmentation fault (core dumped) #0 0x00107d34 in pthread_mutex_lock () from /lib/tls/libpthread.so.0 (gdb) bt #0 0x00107d34 in pthread_mutex_lock () from /lib/tls/libpthread.so.0 #1 0x0026c9a7 in ast_mutex_lock (pmutex=0x24) at ../asterisk/include/asterisk/lock.h:601 #2 0x00274cd0 in l4isup_link_status_change (link=0x2bd620, up=1) at l4isup.c:3450 #3 0x0026c378 in monitor_main (data=0x0) at chan_ss7.c:625 #4 0x00106371 in start_thread () from /lib/tls/libpthread.so.0 #5 0x00c86e5e in clone () from /lib/tls/libc.so.6 regards, -- Atif Rasheed