Data communication method and apparatus including volatile and n

Details Data communication method and apparatus including volatile and n Data communication method and apparatus including volatile and n

1996-09-27

1997-09-16

Hong, Harry S.

Telephonic communications

Supervisory or control line signaling

Substation originated

379355, 379357, 37910001, H04M 127

Patent

active

056688644

ABSTRACT:
In a data communication apparatus having an abbreviated dialing function, data referred to when performing abbreviated dialing is prevented from vanishing in the event of a malfunction or power failure. This is achieved by providing the apparatus with an internal non-volatile storage device in addition to a memory which stores information referred to when communicating with another party. The information which has been stored in the memory is preserved in the non-volatile storage device. If the information in the memory vanishes, the preserved information is restored by being loaded into the memory from the non-volatile storage device.

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