I do not know if this is relevant, but there a kernel message which seems suspicious to me:
[499321.365191] traps: asterisk[17039] trap invalid opcode ip:7fb46af2dedc sp:7fb3e4c0b890 error:0 in libpthread-2.23.so[7fb46af21000+18000] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1741170 Title: iax2 out of call numbers no more space To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/asterisk/+bug/1741170/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
