US PATENT SUBCLASS 379 / 384
.~.~.~ By scanning

Current as of: June, 1999
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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}
383  DF  .~.~ Of plural lines {1}
384.~.~.~ By scanning

DEFINITION

Classification: 379/384

By scanning:

(under subclass 383) Subject matter where a condition of each of the plural loops or lines is detected by sensing each line in sequence.