Automatic redial method for telephone switching system

Telephonic communications – Special services – Repetitive call attempts

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Details

379157, 379356, H04M 342

Patent

active

059563958

ABSTRACT:
A telephone switching system capable of enabling an individualized subscriber phone set of a calling subscriber to dial a stored telephone number, and if a called line of the stored telephone number is busy, to automatically redial the same telephone number at fixed intervals until a ring tone is obtained from the called line of the stored telephone number or until after the telephone number has been redialed a predetermined number of times even when a telephone handset of the subscriber phone set remains "on" hook.

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