I'm being slammed with voip calls, perhaps an error in setup on my end or theirs

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JeffDB:
Things seemed to be going pretty well for me for awhile when I set up my Obi 1062. I had a google # on line 1, another google # on line 6 & a free incoming Callcentric # on line 3.

Then one evening I started getting call after call after call on line 3. It rang incessantly all night & into the morning. I picked it up & no one would be on the line... then it would call back almost immediately. I was getting hundreds of calls & they didn't have any legitimate phone # on the caller id. If I recall, they showed up as something like V395787965...

I checked with Callcentric but there were no numbers showing up as incoming calls. I posted a support ticket and was told that it wasn't coming through their servers. If I understood correctly, they said it might be some sort of misconfiguration in the setup on the Obihai, or that there might be a way to re-configure it to prevent that.

Then it stopped on its own & I forgot about it, but periodically it would start up again... maybe a few days or a week or two later.

Now I'm getting the four middle lines lighting up continuously... lines 2 through 5, which are unused now that Callcentric discontinued their free incoming line service.

Any help, recommendations would be appreciated.

Sheffield_Steve:
How is the Obi connected to the internet?

Do you have a router/firewall between the Obi and the modem?

JeffDB:
Quote from: Sheffield_Steve on February 05, 2019, 01:45:43 pm

How is the Obi connected to the internet?

Do you have a router/firewall between the Obi and the modem?


It is connected via an ethernet cable to an AT&T modem/router.

I assume it has a built in firewall.

Sheffield_Steve:
It doesn't sound like it.

You probably need a router between the modem and your equipment

Check out this post do a scan of your system at the grc.com site as suggested:

http://www.obitalk.com/forum/index.php?topic=15546.msg97075#msg97075

Quote from: JeffDB on February 05, 2019, 02:04:23 pm


It is connected via an ethernet cable to an AT&T modem/router.

I assume it has a built in firewall.

azrobert:
These are SIP calls routed to your public IP and a port number commonly used by SIP devices.
Use OBi Expert to make the following change on each of your lines:

Voice Services -> SPx -> X_AcceptSipFromRegistrarOnly: Checked

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