Today, I had a similar instance occur, only I was on the other end. I called an internal extension, and it rang. The person on the other end picked up and got a busy signal, and after the normal number of rings, I got sent to voicemail. This happened twice. A third time, when I called her, she picked up and no one was there, and I got sent to her voicemail after only one ring.
Also, one time when I tried to pick up a phone call on my inter ring button, the inter voice picked up giving me dial tone.
We have a legend 7.0 10.0 pbx.
