I was called to a company where I have setting up and supporting Obi's for years. A recent replacement device was causing them massive grief. I had just swapped in a 1032 I bought used and configured for them.
This is a Limo company whose main customer is a well-known resort hotel. This phone was constantly ringing and when they picked up the receiver, the line was quiet and hung up. They were getting simultaneous calls on both the configured lines because the second was a roll-over. The display showed a toll free 888 number calling. My first thought was that this was an ajutodialer gone wild. I had that happen to me in the 90's with a fax machine constantly calling my home phone because someone at Equifax had my number listed as a fax machine.
I called the number shown and it was one of those generic messages "Thank you for calling, press 1 for English", etc. The options were to press 1 for vacation deals, press 2 for loan specials, etc. A telemarketers delight! Meanwhile I'm looking at the call detail records at the Voip supplier and not seeing the calls. Ahh, a SIP Scanner. It was at this point I started searing for the threads here on making changes to the Voice config in the phone. The Dispatcher then tells me, "You know, we had this issue last week with something that looked like an extension calling us "100". It lasted about 20 minutes and then stopped. I told her that if I had know that last week I would have instantly recognized the issue and could have fixed it before she then had hours of constant ringing yesterday. An actual valid number showing in Caller-ID is what threw me off at first instead of thinking it was a SIP Scanner.
I tried setting the X_UserAgentPort to a random number high up but the line would not connect to the provider. I made a less random port change and that seemed to fix the problem. I also enabled X_AcceptSipFromRegistrarOnly. I would like to set up the IP address of the server but they use multiple ones, so I am hoping this solves it.
I had a screenshot of the active call on SP1 and thought I sent it to the printer but seems I did not. It would have been interesting if it had the IP address of the scanner and if I could tie that to the Telemarketing group with the sketchy phone tree.
