Re: 2002220000 Given as Caller ID

From: Geoffrey Welsh

> Subject: Re: 2002220000 Given as Caller ID > Date: Tue, 1 Mar 2005 15:30:38 -0500 > Marcus Didius Falco wrote: >> I recently had occasion to call Pakistan using a "dial-around" >> carrier in the US. The call appeared on the Pakistani's cell phone as >> a local call in Islamabad, meaning it was handled as a VOIP call. > I've seen that in North America for years and I don't think it implies > VOIP at all ... calls from the U.S. sometimes show local number for > caller ID when they ring through to my phone, and I always assumed > (yeah, I know ...) that all it meant was that the long distance link > terminated locally (and, I would guess, without the correct caller ID) > at some local access point that had its own caller ID designation. I > understand why a VOIP link might do that, but I don't see why _only_ > VOIP would do that.

That could theoretically occur in this country if some IXC were using 'line side" termination (Feature group A or B, IIRC) rather than "trunk side termination" (Feature group C or D). But this is obsolete and I think line side termination was eliminated at least 10 years ago. Thus, the only way it could occur is if some carrier were terminating on a telephone or PBX in the calling area, which now happens only for VOIP. (Until recently it did sometimes occur with cellular carriers for similar reasons.)

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Marcus Didius Falco
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