Low Voltage Two Wire to Four Wire Telephone Circuit Converter Apparatus.
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 08, 1983
- Accession Number
- ADD011449
Entities
People
- D. Pacini
Organizations
- United States Department of the Air Force