Our phones are randomly calling themselves. Occasionally my users will receive a call from their extension that rings their phone. Once they pick it up, nobody is on the line. This happened today and all of the phones rang their respective extension.
I cannot figure out what might cause this. Has anybody experienced it? Can anybody help me with troubleshooting?
We are running FreePBX 2.9.0.14 with Polycom phones.
Thank you