US PATENT SUBCLASS 379 / 275
.~.~.~.~.~ Including marking circuit

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}
271  DF  .~.~.~ Having multistage switching {2}
272  DF  .~.~.~.~ Path selection or routing {3}
275.~.~.~.~.~ Including marking circuit {1}
276  DF  .~.~.~.~.~.~> End-to-end marking (e.g., self-seeking)

DEFINITION

Classification: 379/275

Including marking circuit:

(under subclass 272) Subject matter which includes placing a potential on a lead or contact of a path selecting multistage switching device and a hunting circuit for making a connection to the lead or contact in response to the potential thereon.