Exchange apparatus and method for testing the same

Details Exchange apparatus and method for testing the same Exchange apparatus and method for testing the same

1995-06-30

1996-07-16

Chin, Wellington

Multiplex communications

Wide area network

Packet switching

370 15, H04L 1226

Patent

active

055373917

ABSTRACT:
The present invention relates to an exchange apparatus and a method for testing an exchange apparatus. The exchange apparatus includes layer 1 process normality confirming means for confirming the normality of a layer 1 process to the digital terminals by the exchange while the connecting means interconnects physically the terminals; the exchange having layer 2 logical link establishing means for inversely controlling command/response information during a logical link setting request after confirming the normality of layer 1 process to the digital terminals in the exchange, and then for establishing a layer 2 logical link in the exchange in a loop-back state. The object is to test comprehensively an exchange apparatus including the layer 1 to layer 3 processes of the primary rate interface without actually connecting the primary rate interface subscriber device.

REFERENCES:
patent: 5157665 (1992-10-01), Fakhraie-Fard et al.
patent: 5390183 (1995-02-01), Friedrich et al.

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