Ring Group calls unavailable sip extensions through external trunk

(United States) #1

Our SIP trunk provider is charging us for every false outbound attempt by our FreePBX system.
Currently we have several ring groups set up with 10-20 extensions each. Some of them cell phone numbers. When there is an extension that is no longer registered, our system is dialing the trunk with a Prefix of LC+EXT@example.trunk.c
We get 100-200 errors a day when we get a lot of calls, and it’s starting to hit calls per second limits.
The installation is fairly basic, with nothing advanced everything seems to be set up correctly, but i cannot fathom why local unavailable extensions would be called using an outside trunk line.

(Lorne Gaetz) #2

You must have an outbound route dial pattern of only a single . character, which is sloppy config. Properly structured dial patterns in outbound routes would prevent this.

(United States) #3

Thank you for the quick response, this fixes the issue. Is there any reason why a dialpattern would ever include a single . character?

(Dave Burgess) #4

If you are in a place that has variable (and unpredictable) phone numbers. Otherwise, you want to tune your outbound routes to specific dial patterns to avoid bad calls from getting out.

(system) closed #5

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