Synchronous transfer mode/asynchronous transfer mode converting

Details Synchronous transfer mode/asynchronous transfer mode converting Synchronous transfer mode/asynchronous transfer mode converting

1997-02-01

1999-07-06

Pham, Chi H.

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370412, H04L 1256

Patent

active

059205636

ABSTRACT:
In a synchronous transfer mode/asynchronous transfer mode converting transmission path terminating apparatus, a receive synchronous transfer mode processing unit has an out of synchronization detecting unit for detecting out of synchronization information, and an asynchronous transfer mode cell extracting unit has an asynchronous transfer mode cell synchronizing unit for forcibly outputting a signal representing out of synchronization when receiving the out of synchronization information from the out of synchronization detecting unit, an asynchronous transfer mode cell discard judging unit for forcibly outputting a cell discard signal when receiving the out of synchronization information from the out of synchronization detecting unit, and a storage write controlling unit for forcibly inhibiting an asynchronous transfer mode cell from being written in a storage unit when receiving the out of synchronization information from the out of synchronization detecting unit, thereby always capturing accurate data (cells) to continue a process even immediately after generation of an alarm such as an SEF signal, besides transferring error information used to accurately switch a transmission path so as to prevent unnecessary switching of the transmission path.

REFERENCES:
patent: 5341376 (1994-08-01), Yamashita
patent: 5428609 (1995-06-01), Eng et al.
patent: 5623491 (1997-04-01), Skoog

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