Cid: +0

Got a call:

+0
Unknown
Call Reference ID: 1527269569_42784117@xxx.xxx.xx.xxx

I have block all unknown calls enabled. Does anyone know what this is?

I'd like to suggest that Voipo treat invalid CID numbers as "Blocked". For example, I got a call today from "7260002827". That of course has to be bogus, with a 000 exchange. The telemarketers are supplying deliberately invalid CID info and I'd think that Voipo could apply some basic rules to filter these out.

Quote:

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Originally Posted by holmes4

I'd like to suggest that Voipo treat invalid CID numbers as "Blocked". For example, I got a call today from "7260002827". That of course has to be bogus, with a 000 exchange. The telemarketers are supplying deliberately invalid CID info and I'd think that Voipo could apply some basic rules to filter these out.

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Excellent thought!

VOIPo may need the occasional ticket to open a new overlay, but otherwise that sounds effective. It would mostly be a bit of work and debugging as it is newly implemented. In routing, along with "unknown", they could add a separate rule called "Invalid CID". Require the NPA-NXX to be valid.

My In-laws who live in Canada had their call rejected the other day. I was wondering what was going on! I reject all but a few local exchanges. I do not have 416*******, but their 519******* is good to ring the phone.

On checking, their number was ID'd as 416825**** and should have been 519825****. Apparently this was a side-effect of a calling card service. I added my own *8251234 rule to let their specific 7 digit number ring in the future!

Upon further investigation, Voipo might already be doing this. It turns out that the "000" exchange number never rang my phone, though I saw it in the call log. I have "Unknown" numbers blocked.

My suggestion would not require overlay checking - just look for syntactically invalid numbers (area code or exchange of 000), which I see a lot of telemarketers using. I suppose they could switch to 001 or something like that...

I use call routes to block 000 area codes and exchanges, 000******* and ***000****.

^^^ What he said. Also do the same for all the other oddball CID's. Call routes with wildcards are great.

Thanks everybody. I blacklisted 0********* and ***000****.

Hey Sal,

Since you used 0*********, would you also be able to use ***0****** instead of ***000****?

Also, when blocking these types of calls, I like to have it go to a busy signal. That way they can continue to waste their time calling back.

Jim

Here is another one:

1*********

This website: http://www.bennetyee. org/ucsd-pages/area.html lists out area codes and the first one is at 201.