Re: Can't block caller ID in Massachusetts?

["Bruce M." <bkmarsh@feist.com>]

On Sat, 13 Jul 1996, Sandy Sandfort wrote:

> In response to which Bruce M. wrote:
> 
> > It would still be possible for the LD company to just pass
> > through your information for ANI, although I wonder what
> > percentage actually do.
> 
> Not being technically oriented, I may be venturing into deep
> water here, but I don't think ANI "pass through" is likely at
> all.  When you use a pre-paid calling card, TWO separate calls
> and call set-ups are made, your call to the card company and
> the card companies call to your ultimate destination.  While 
> many (most?) card companies keep records of all calls placed,
> there are some who keep no records at all.  Unless this
> hypothetical "pass through" capability is somehow built into 
> the the phone infrastructure and is transparent to the card 
> companies, I seriously doubt the card companes would invest any
> resources in doing such a "pass through."  After all, the same
> information is available, albeit with a bit more work, from 
> their operational logs if they even keep those.

    I'm not positive, but I think that there may be some standards on 
what types of signals and information that they must pass through.  I 
don't know that ANI signals would be among those, but I know that LD 
companies have been 'encouraged' for quite some time to pass on 
the information.

                       ________________________________
                      [ Bruce M. - Feist Systems, Inc. ]
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     "Official estimates show that more than 120 countries have or are 
      developing [information warfare] capabilities." -GAO/AIMD-96-84