I have a problem with Call Flood

If in active calls you see a lot of pending calls an none of them are connecting:

This can indicate that asterisk is overloaded, in such case setting the "maxload" value in asterisk.conf should solve the issue. What you should do:

1. Open asterisk.conf file with any editor:

vi /etc/asterisk/asterisk.conf

2. Add or edit the "maxload" line, set the value to be equal to the number of cores one your server (or lower).

maxload = "number of cores"

3. Restart asterisk:

service asterisk restart