ISDN switching system having testing facilities

Details ISDN switching system having testing facilities ISDN switching system having testing facilities

1992-11-25

1995-08-15

Marcelo, Melvin

Multiplex communications

Wide area network

Packet switching

3701101, 371 205, H04L 114

Patent

active

054426219

ABSTRACT:
An ISDN switching system having facilities for testing an ISDN signal composed of B-channels and D-channels at least. The testing facilities can achieve a B-channel test and D-channel test selectively with simple construction by employing a converting unit in the system. The converting unit enables creation of a connection path between a test equipment and an object to be tested through an ISDN exchange and thus the ISDN signals for the test can be treated as usual ISDN signals. Thereby, the test equipment and the object can freely be connected to each other.

REFERENCES:
patent: 4965795 (1990-10-01), Coffelt et al.
patent: 4998240 (1991-03-01), Williams
patent: 5027343 (1991-06-01), Chan et al.
patent: 5187705 (1993-02-01), Mano

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