ciao, forse può essere utile vedere anche questo output del var/log/syslog

Feb 14 18:42:38 ubuntu mon[12388]: failure for ping_group ping 1171474958 asterisk
Feb 14 18:43:19 ubuntu mon[12388]: client connection from 127.0.0.1:49819
Feb 14 18:43:19 ubuntu mon[12388]: client command "protid 9745"
Feb 14 18:43:19 ubuntu mon[12388]: client command "list disabled"
Feb 14 18:43:19 ubuntu mon[12388]: client command "list state"
Feb 14 18:43:19 ubuntu mon[12388]: client command "list watch"
Feb 14 18:43:19 ubuntu mon[12388]: client command "list opstatus"
Feb 14 18:43:19 ubuntu mon[12388]: client command "list descriptions"
Feb 14 18:43:38 ubuntu mon[12388]: failure for ping_group ping 1171475018 asterisk




grazie