[VoiceOps] Preventing calls to cell phones with guaranteed accuracy

[Carlos Alvarez]

If you do NPA-NXX first and then test for a ported number second (via one
of the many ways discussed already), you will falsely eliminate numbers
that were ported from wireless to fixed.  From my customer's perspective,
they don't care.  First off, there are FAR less ports that way as compared
to ports to wireless.  Second, it just means they will hand-dial the
number, not "lose" it altogether.  While there is a slightly higher cost,
it's not huge enough to care.

If we do this, I'm 90% certain we will use Neustar's product that just
shows intermodal ports.  It's cheap and simple.  However the customer is
still on the fence on whether there's enough cost involved for hand-dialing
versus the risk of a lawsuit or FCC smackdown.  I find it hard to believe,
but the early numbers say that the cost isn't going up all that much with
manual dialing.



On Tue, Aug 25, 2015 at 1:29 PM Alex Balashov <abalashov at evaristesys.com>
wrote:

> On 08/25/2015 04:24 PM, Paul Timmins wrote:
>
> > taking the obvious cell phone blocks out first saves you time and
> > money.
>
> Curious, how does that deal with a scenario in which there was an
> intermodal port wireless -> fixed-line? Or does this just not tend to
> happen to any non-negligible degree?
>
> If so, I wonder if that may change with the advent of MVNOs whose back
> side is a VoIP-oriented CLEC + the regulatory movement toward non-LEC
> ITSPs owning their own number resources Is it reasonable to expect that
> all mobile numbers operated by some sort of "enhanced" wireless provider
> (e.g. a boutique MVNO) will be homed to the big networks' number blocks
> which return a wireless affiliation?
>
> --
> Alex Balashov | Principal | Evariste Systems LLC
> 303 Perimeter Center North, Suite 300
> Atlanta, GA 30346
> United States
>
> Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
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