Network system and frame relay switch

Details Network system and frame relay switch Network system and frame relay switch

1997-04-21

2000-09-12

Patel, Ajit

Multiplex communications

Data flow congestion prevention or control

370236, 370225, G01R 3108

Patent

active

061187593

ABSTRACT:
A network system in which administrators of frame relay networks can recognize the quality of the ATM network suitably and manage the frame relay networks in accordance with the quality condition of the ATM network. When a frame F is transmitted from a frame relay network FR1 at a transmitting side to an IWF, a frame header in which a transmission number is stored is added to the frame F. Then, the frame F is received by a frame relay network FR2 at a transmitted side through the IWF and the ATM network. In the frame relay network FR2, a difference between the transmission number stored in the frame header of the frame F and a reception condition variable kept in the frame relay network FR2 is calculated, and the difference is stored in a quality information collection table as a number of discarded frames in the ATM network.

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