Incoming calls from 1001?

[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.........