Descriptions for H04Q and notes/indexes are displayed on this screen.


Note(s)
    This subclass covers :[1,2009.01]
      methods, circuits, or apparatus for establishing selectively a connection between a desired number of stations (normally two), or between a main station and a desired number of substations (normally one) for the purpose of transferring information via this connection after it has been established;selective calling arrangements over connections already established 
    In this subclass, the following terms or expressions are used with the meanings indicated:
      "subscriber" is a general term for terminal equipment, e.g. telephone for public use;"substation" means a subscriber or monitoring equipment which may connect a single subscriber to a line without choice as to subscriber;"satellite" is a kind of exchange the operation of which depends upon control signals received from a supervisory exchange;"switching centres" includes exchanges and satellites.

Subclass indexes

SELECTING ARRANGEMENTS

General; by line; multiplex

3/00; 5/00; 11/00

DISPOSITIONS FOR TELECONTROL OR TELEMETRY

9/00

DETAILS

1/00