Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection
Patent
1995-05-17
1997-06-24
Zele, Krista M.
Telephonic communications
Supervisory or control line signaling
Using line or loop condition detection
379216, 379355, H04M 126
Patent
active
056424140
ABSTRACT:
A method and apparatus for generating a telephone Call Blocking Code and outputting the telephone Call Blocking Code on a telephone line each time a telephone off-hook condition is detected or, alternatively, by pressing the first digit of the telephone number to be called. This provides an All Blocking feature for the telephone by automatically generating a blocking code signal before every outgoing call from the telephone.
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Wolinsky Scott
Zele Krista M.
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