FTP connection refused- too many sessions, since then phones refuse to register


I have a PBX with more than 100 phones. It seems they all rebooted and tried to ftp with the server on the cloud to fetch the config file.
FTP: connection refused - too many sessions.
I have increased the max_per_ip and restarted the ftp service.
But, ftp still does not succeed when I reboot the phone. I have disabled the firewall. So, it’s not like that ip is banned. Also, phones that have config refuse to register with sip cause 408 - connection refused by server.

We have also restarted the pbx. What else could be the cause?


What, if anything, appears in the Asterisk log when a phone attempts to register?

If nothing: what, if anything, appears in sngrep when a phone attempts to register?

If nothing: check that phone is sending to correct IP/port.

Yep, already checked that. No attempts from that ip address. It’s as if they can’t connect to our server. We don’t have access to their local network. I have asked them to check their side.

Just wanted to verify if there is anything else that could be preventing this on the PBX.

This topic was automatically closed 31 days after the last reply. New replies are no longer allowed.