Method and apparatus for automatic generation of telephone call

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

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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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