US PATENT SUBCLASS 379 / 1
DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT

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

1DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT {12}
2  DF  .~> Including fault responsive disconnection of tested component
3  DF  .~> Of hybrid or echo suppressor or canceller
4  DF  .~> Of repeater
5  DF  .~> By loopback
6  DF  .~> By analysis of injected tone signal
7  DF  .~> For detection of eavesdropping device
8  DF  .~> With blocking of normal usage
9  DF  .~> Of centralized switching system {6}
21  DF  .~> Using portable test set (e.g., handset type)
22  DF  .~> Of trunk or long line {4}
27  DF  .~> Of subscriber loop or terminal {4}
32  DF  .~> Indication of nonstandard condition of telephone equipment {1}

DEFINITION

Classification: 379/1

DIAGNOSTIC TESTING, MALFUNCTION INDICATION, OR ELECTRICAL CONDITION MEASUREMENT:

(under the class definition) Subject matter for either (a) evaluating or monitoring the condition of a telephone system or a component thereof in order to determine the presence of a faulty or nonstandard condition or (b) quantitatively determining an electrical parameter of a telephone system or component thereof.

(1) Note. Testing to determine which one of several normal status conditions exist (e.g., busy-idle, off-hook) is not classified in this or indented subclasses.

(2) Note. The testing or measurement must be specifically claimed as in or for a telephone system or a component thereof for classification in this or indented communication or telecommunication system is not sufficient for classification in these subclasses.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing, appropriate subclasses for an electrical measurement or test not limited to a telephone instrument or system.

340, Communications: Electrical,

635+, for fault indication of an electrical apparatus, and an electrical parameter, respectively.