d/lloodd11_19

v

it has, as has been
 mentioned, been co-developed for use with the ESS #5 switching machine.

    CLASS is going to cause problems, as well as create a new environment
 for telephone users. Of course, those problems are only problems to people
 who will generally be reading this article, but the more you know about CLASS
 the more comfortable you'll feel about the service. It can be used to
 one's advantage, even as a telecommunications hobbyist. Just as a
 corporation will be able to set up a complete history of who is calling their
 system, and eventually keep people off the system using the screen list in
 memory, the same features can be applied to bulletin board systems and the
 like. Imagine being able to keep all the local bozos off your board, or
 being able to screen all but your private local users (making your system
 completely inaccessible through the PSTN network from any telephone but
 that of one of your users). It would seem to be a useful feature, if nothing
 else bu