Low Voltage Two Wire to Four Wire Telephone Circuit Converter Apparatus.

reportActive / Technical Report | Accession Number: ADD011449 | Need Help?

Abstract:

This abstract describes a low voltage two wire to four wire telephone circuit converter apparatus utilizing a series pair of amplifiers to provide a transmit data out signal that is referenced to analog ground. A pair of amplifiers is in parallel to receive data in single which is referenced to analog ground and apply it to the telephone unit. A signal adapter converts the telephone ring signal to a constant one level for transmission over a digital channel in a fiber optic link.

Author(s):
Pacini, D.
Author Organization(s):
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
Descriptive Note:
Patent Application,
Pagination:
0014

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Availability: This Government-owned Invention Available For U.s. Licensing And Possibly, For Foreign Licensing. Copy Of Application Available Ntis.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-473 384
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Patent applications, *Adapters, *Telephone systems, Constants, Data links, Fiber optics, Amplifiers, Channels, Digital systems, Low voltage, Analog systems, Ground level, Rings, Signals
Field(s)/Group(s):
Non-Radio Communications
Report Date:
1983 Mar 08