TELECOM Digest OnLine - Sorted: Re: 2002220000 Given as Caller ID

Re: 2002220000 Given as Caller ID

Marcus Didius Falco (falco_marcus_didius@yahoo.co.uk)
Tue, 01 Mar 2005 00:00:00 GMT

> From: Geoffrey Welsh <reply@newsgroup.please>
> 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 But this is obsolete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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