Telephonic communications – Subscriber line or transmission line interface
Patent
1993-11-12
1995-08-22
Dwyer, James L.
Telephonic communications
Subscriber line or transmission line interface
379 5, 379412, 370 856, 370 8511, H04B 346
Patent
active
054447763
ABSTRACT:
A network interface unit interconnected between a network span and a customer premises. The network span includes network transmit lines and network receive lines. The network interface unit includes a passive resistance circuit in the receive direction path that allows monitoring of signals from a central office in the presence of open circuit reflection or noise from the customer premises.
REFERENCES:
patent: 3568100 (1971-03-01), Tarbos
patent: 5173896 (1992-12-01), Dariano
patent: 5224149 (1993-06-01), Garcia
Peterson Daniel C.
Sheets Laurence L.
Dwyer James L.
Saint-Surin Jacques M.
Teltrend Inc.
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