Multirate wire line modem apparatus

Details Multirate wire line modem apparatus Multirate wire line modem apparatus

1990-12-10

1993-01-05

Kuntz, Curtis

Multiplex communications

Wide area network

Packet switching

379410, H04L 514

Patent

active

051777347

ABSTRACT:
Multirate wire line modem apparatus operable at either of two rates in either transmission or reception modes is provided according to the teachings of the instant invention. Full duplex operation and echo cancellation are utilized for both voice and data. Structurally an IOP processor acts as a system controller in controlling transmission and reception digital signal processors which provide the independent transmission and reception functions of the resulting multirate modem apparatus.

REFERENCES:
patent: 4007341 (1977-02-01), Sourgens et al.
patent: 4594479 (1986-06-01), Farrow et al.
patent: 4682358 (1987-07-01), Werner

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