H04M3/302 - CPC Classification Index

ClassID:

227573 ⎘

H04M3/302 - CPC Classification

Classification description:

Automatic or semi-automatic exchanges; Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring; Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs

Sub-classes:

H04M3/303 » {and using PCM multiplexers, e.g. pair gain systems} 10
H04M3/304 » {and using xDSL modems } 172

Recent Application in this class:

20150195005

Method and apparatus for fast and accurate acquisition of crosstalk coefficients

20150124943

Performance monitoring for discontinuous operation modes

20130107917

Symbol-gated discontinuous mode for efficient power management of digital subscriber line transceivers

20100086105

Systems and methods for characterizing loop termination via single-ended line testing

20080298555

Systems and methods for loop length estimation based on per-port calibration

20080279269

Systems and methods for loop termination detection based on per-port calibration

20080240368

Systems and methods for bridge tap detection based on per-port calibration

20080219413

SYSTEMS AND METHODS FOR LOOP GAUGE DETECTION BASED ON PER-PORT CALIBRATION

20070177624

Communication interface and testing method therefore

20060233228

Modern testing system and method