Why no names on Verizon caller ID?

Another twist is that I remember a while (year or two?) ago that included
with my vzw bill was a note that said that starting soon, subscriber info
would sent along with the number. For whatever reason that never
materialized.

"CharlesH" <hoch@exemplary.invalid> wrote in message
news:c607m401ut3@news3.newsguy.com...
> In article <N4ednbfbw4Ml-R3dRVn-ig@lmi.net>,
> Steven J Sobol <sjsobol@JustThe.net> wrote:
> >Alan M. <letsgohokies@hotmail.com> wrote:
> >> Apparently Verizon and T-Mobile have such an agreement, as do Verizon
and
> >> Cingular. Interesting that Verizon and Verizon Wireless do not.
> >
> >Yup. And SBC and Sprint PCS also had such an agreement so that Sprint
cell
> >subscribers' names showed up on SBC landline caller ID, but that ended
when
> >they got into a fight about compensation for the database dips...
>
> A bit of detail here... In the landline network, the caller-id number
> info comes along with the rest of the call setup info, but the name is
> NOT included. The end switch has to make a separate database "dip" in
> the caller's database to map the number to a name in order to send it
> to the called phone, and contracts specifying the cost/dip have to be
> in place. For whatever reason, most wireless providers don't provide
> that database to the landline carrier. In the "old days", wireless
> providers had a much more primitive connection to the landline system
> (sort of like a super PBX rather than a peer phone company), but that
> excuse doesn't apply anymore.
>
> Similar contracts would have to be in place for landline->wireless calls,
> but I am not sure if the protocol to the wireless phone supports caller
> id name.
>