US PATENT SUBCLASS 379 / 379
.~.~ With optical link between line and switching system

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


379 /   HD   TELEPHONIC COMMUNICATIONS

350  DF  SUPERVISORY OR CONTROL LINE SIGNALLING {5}
377  DF  .~ Using line or loop condition detection (e.g., line circuit) {7}
379.~.~ With optical link between line and switching system

DEFINITION

Classification: 379/379

With optical link between line and switching system:

(under subclass 377) Subject matter including a communication link between a subscriber's line and a central switching system which uses light waves.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements,

109+, for optical communications.