Yealink device connected to endpoint management is sending calls to random numbers constantly

[rushikakpatel (Rushika)]

Hello Everyone,

I am using FreePBX 17.0.24.

I had already enabled responsive firewall, also I my admin panel is behind net. Its only accessible from LAN.

But phones are accessible from net.

I am using endpoint management for SIP registration, I am using yealink, T31-P.

Yealink device is sanding constantly calls on some random numbers. And I didn’t found and logs on FreePBX for those calls.

I had factory reset the phone, still it is sending calls. So I had disabled “Direct phone Dialing“ from phone and restart phone and configure device manually.

Now I wanted to know, why this happen and how to backtrack it so that I can prevent this in future case. As on freepbx side there is no log for this activity.

Please help to resolve this problem. Its urgent.

Thanks in advance.

[ianlinzey]

unfortunately it could be some guy hacking your phones and messing with you, the firewall cant always stop them you could try tracing how the calls are made with a firewall logger and see whats coming in and out, hope this helps