kg19+@andrew.cmu.edu (Kurt A. Geisel) (04/06/89)
The May 1989 issue of Radio-Electronic starts a multi-part article
on building an ISDN prototyping phone. It is a special interface
board which connects to a standard Telenova PBX station. It provides
a complete TE1 interface, based on the AM79C30A chip, which can be
made ISDN-ready if you have a hookup available. In case you don't, a
standard analog phone interface is built in (with DTMF and
call-progress monitoring), allowing you to connect to an existing twisted
pair and emulate ISDN functions. Apparently, you will be able to customize
the software (the Telenova's 8085 w/ 64K) to do your own ISDN
experiments, as well have a fully-functional TE1, but the software
details won't be revealed until a later issue.
All in all, it looks pretty promising for all you hacker ("good" sense
of the word, I THINK...) types.
- Kurt
Kurt Geisel SNAIL :
Carnegie Mellon University 65 Lambeth Dr.
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