Telephone answering and call forwarding improvement

Details Telephone answering and call forwarding improvement Telephone answering and call forwarding improvement

1985-07-05

1987-06-30

Dwyer, James L.

Telephonic communications

Special services

Call diversion

379387, H04M 354

Patent

active

046776630

ABSTRACT:
An improvement to automatic answering and call forwarding features used in telephone communications which allows a user to remotely activate, modify, and deactivate these features. The improvement describes a transformerless means for coupling signals to and from the telephone line without compromising the operation of the telephone line. The apparatus employs a microprocessor controller (11) with memory (12), a tone encoder (15), a tone decoder (14), a voice synthesizer (16), a timer (13), a cassette interface (17), an RS232C interface (20), a switching matrix (21), and a line interface (22). Audio, pulse dial, and tone signals are routed among the components and the telephone line (51) by the switching matrix (21) and line interface (22). The line interface (22) provides a transformerless means for coupling signals to and from the telephone line (51) and also analyzes the status of, and signals present on, the telephone line (51).

REFERENCES:
patent: 4475009 (1984-10-01), Rais et al.

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