The future of ISDN
This page under construction.
National ISDN
Most of the interesting R&D being done is in the B-ISDN world, and in the
world of applications.
Surprisingly though, there is still a lot of
standardization going on with Narrowband ISDN, which amounts to standardizing
the standards. This is pretty dry stuff, voltage levels, ring volumes,
and various things needed for vendor interoperability. The set of
interoperability standards referred to is called National ISDN.
Applications
The standardizing of applications is really separate from the ISDN
standards themselves, but these applications will be important to the
future success of ISDN. Currently research is being done into ???
vidphones, low-res voice, high-res sound,
Broadband ISDN
There is still a great deal of work being done here. The biggest area
of work is in the finalization of ATM.
The real world
As ISDN is deployed, few people are currently replacing their home phone
system with an ISDN phone network. The trend for now seems to be providing
an entire ISDN netork in a single box, with the NT1, TA, and TE1 equipment
all built in. An example would be the Pipeline 25, from Ascend, which
provides ISDN to ethernet connections, using IP. It has an NT1 built in,
and provides two phone jacks for standard
POTS telephones.
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