Board-to-board test unit for a digital subscriber line

Details Board-to-board test unit for a digital subscriber line Board-to-board test unit for a digital subscriber line

1991-09-09

1993-02-16

Schreyer, Stafford D.

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

With blocking of normal usage

379 18, 379 15, H04M 330

Patent

active

051877325

ABSTRACT:
An upstream PCM link accommodated in a new switch is bridged to a downstream PCM link accommodated in an old switch in the normal operating condition. A test unit sends the number of a subscriber to be tested to an old and new switches. The old switch sends call control information corresponding to the directory number of a subscriber to be tested as a normal call process. A test call control information monitor in the new switch monitors whether or not the call control information is properly received through a call control information extractor provided in the new switch as a standard component. Thus, a board-to-board test can be conducted by combining a normal call function in the old switch and a standard call control information extracting function of the new switch with a plurality of subscriber signals multiplexed in physical links in the PCM link without excessively increasing a load of the switch.

REFERENCES:
patent: 3920927 (1975-11-01), De Luca
patent: 4860281 (1989-08-01), Finley et al.

Affiliated with

Also associated with

Rating

Board-to-board test unit for a digital subscriber line does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Board-to-board test unit for a digital subscriber line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Board-to-board test unit for a digital subscriber line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2153559