Duane,
You wrote:
>>As much as U.S. telecom practices are maligned by engineers and PTT's
outside of this country, this kind of signal generation in not allowed.
Part 68 is a double edged sword, it also controls the approval of CO
equipment. <<
(1) Telecom systems where not designed, they "evolved". This is one of the
major
cultural differences between data processing networks and practices and
telecom networks and practices. Because of this characteristic, you'll
find
a lot more slop in telecom systems design than in data network design.
That spills over in the terminal design and indeed puts more of a burden
on the
designers of terminals for telecom networks.
This is changing as indeed more and more of the network is being
redesigned to
serve the global information infrastructure, but there is on heck of a lot
of the
"evolved stuff" still out there.
(2) Part 68 of the FCC Rules and Regulations does NOT control approval of
Central Offce
equipment. Approvals of Central Office equipment are strictly an issue
between the
buying telephone company and the selling supplier. You also will find that
the
standards developed by Committee T1, to describe the interface between the
public
switched network and the customer premises, have mandatory statements only
on the part
of the customer premises, not on the part of the public network. There
were good
solid reasons for that.
Ciao,
Vic
