Test of cell conductivity in ATM switching system

Details Test of cell conductivity in ATM switching system Test of cell conductivity in ATM switching system

1997-06-26

2000-10-17

Olms, Douglas W.

Multiplex communications

Diagnostic testing

Fault detection

370395, 370412, G01R 3108, G06F 1100, G08C 1500, H04J 116

Patent

active

06134219&

ABSTRACT:
In an asynchronous transfer mode (ATM) switching system, a generating section generates test cells at a generation rate, and stops the generation of the test cells in response to a generation stopping instruction. Input and output buffer section stores normal cells and the test cells. Each of the normal cells is used for transferring speech or data Each of the input and output buffer sections issues a congestion notice in accordance with a storage state in the buffer section. An ATM switch receives the normal cells outputted from the input buffer section to transfer to an output port. A test section tests the test cells to determine whether cell conductivity is established. A control section issues the generation stopping instruction to the generating section in response to the congestion notice from the input or output buffer.

REFERENCES:
patent: 5373504 (1994-12-01), Tanaka et al.
patent: 5457687 (1995-10-01), Newman
patent: 5513191 (1996-04-01), Takechi et al.
patent: 5602826 (1997-02-01), Yoshimura et al.
patent: 5668801 (1997-09-01), Grunenfelder
patent: 5719853 (1998-02-01), Ikeda

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