Hi, Today I was experiencing consistent crashes when calling a Snom phone. I tested latest PJSUA (1.x branch) and I can reproduce the crash all the time. It's produced a few seconds after the call has started. Here is the backtrace: Program terminated with signal 11, Segmentation fault. #0 0x00000000004ea1f2 in rdb_add_index (rdb=0x1d0c4c8, index=2802) at ../../srtp/crypto/replay/rdb.c:118 118 v128_set_bit(&rdb->bitmask, rdb_bits_in_bitmask-delta); (gdb) bt #0 0x00000000004ea1f2 in rdb_add_index (rdb=0x1d0c4c8, index=2802) at ../../srtp/crypto/replay/rdb.c:118 #1 0x00000000004e651b in srtp_unprotect_rtcp (ctx=0x1cfd3f0, srtcp_hdr=0x1d2b260, pkt_octet_len=0x7f4c7eb3e5b0) at ../../srtp/srtp/srtp.c:1799 #2 0x00000000004a4d5a in srtp_rtcp_cb (user_data=0x1d254c8, pkt=0x1d2b260, size=66) at ../src/pjmedia/transport_srtp.c:972 #3 0x00000000004a7439 in on_rx_rtcp (key=0x1ccc078, op_key=0x1d2b040, bytes_read=66) at ../src/pjmedia/transport_udp.c:564 #4 0x000000000053c741 in ioqueue_dispatch_read_event (ioqueue=0x1d0d948, h=0x1ccc078) at ../src/pj/ioqueue_common_abs.c:577 #5 0x000000000053e6fa in pj_ioqueue_poll (ioqueue=0x1d0d948, timeout=0x7f4c7eb3ee80) at ../src/pj/ioqueue_select.c:905 #6 0x000000000048b75e in worker_proc (arg=0x1ccc208) at ../src/pjmedia/endpoint.c:296 #7 0x000000000053f5ca in thread_main (param=0x1d137d8) at ../src/pj/os_core_unix.c:492 #8 0x00007f4c80205b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304 #9 0x00007f4c7f64f2fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #10 0x0000000000000000 in ?? () (gdb) Let me know if you need any further information to help debug the issue. Regards, -- Sa?l Ibarra Corretg? AG Projects