US PATENT SUBCLASS 379 / 279
.~.~.~ Control reliability (e.g., redundancy)

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
258  DF  .~ Switching controlled in response to called station addressing signal {9}
268  DF  .~.~ Having shared or common switching control {8}
279.~.~.~ Control reliability (e.g., redundancy)

DEFINITION

Classification: 379/279

Control reliability (e.g., redundancy):

(under subclass 268) Subject matter with switching control in accordance with the reliability of the control components.

SEE OR SEARCH CLASS

714, Error Detection/Correction and Fault Detection/Recovery,

820+, for redundancy in a signal transmission facility or channel not limited to telephone equipment.