Incoming calls from 1001?

[GreenLantern]

I hate to say it, but it is probably just a matter of time before we all start getting anonymous Viagra calls.

I believe there is a way to disable inbound calls from non-registered sources or something. Just not sure if all devices have that capability.

[ThorsDad]

I just started getting calls on line 2. Caller ID says 1000 for both name and number. The calls were coming non-stop until I received a real call on line 1. Does anyone know what is causing this and how to keep it from happening again?

[tritch]

These unwanted calls are typically caused by someone probing/scanning your ATA.....most likely coming from a China IP address. They are not coming from Voipo.

Here's a few suggestions:

1) The best thing to do is open up a support ticket with Voipo and have them change your SIP ports to something other than 5060 or 5061 (e.g. 5078 or 5079). This will usually stop the probing.
2) If you have a Linksys ATA, ask support if they will enable the "Restrict Source IP" setting in the ATA. Other ATA brands (Grandstream, etc) may or may not have a similar setting. This will absolutely stop the probing. In layman's terms, this basically tells the ATA to drop all data packets from any untrusted IP source and to only accept data packets from Voipo's SIP server.
3) Lastly, tighten up your router's firewall if you can. They are getting through your open ports in your router's firewall to the ATA, so removing any DMZ or port forwarding to your ATA may eliminate the issue. Hopefully you can do so without affecting calls to/from your ATA.

Hope this helps.........