CIRCUIT DEVICE FOR PRECONNECTING TRANSMISSION DEVICE IN RING ARCHITECTURE FOR BIDRECTIONAL TRANSMISSION OF ATM CELL

摘要

PROBLEM TO BE SOLVED: To surely transmit information that is transmitted according to an asynchronous transfer mode through plural network nodes by inserting and connecting other exchange devices in a transmission section and interconnecting at least two exchange devices. ;SOLUTION: Exchange devices which constitute a ring separately have a bridge device S and a selector SN. That is, active current sections WEA_-D and WED_-A are arranged and connected between the exchange devices NA and ND. ATM cells which arrive through connection lines WTA_-D and WTD_-A are guided through the current sections WEA_-D and WED_-A. On the other hand, in a spare section, the device NA is guided to the device ND through still other exchange devices NB and NC. The ring that consists of these exchange devices features bidirectivity, and the reverse direction of the connection lines WTA_-D is formed with the connection lines WTD_-A.;COPYRIGHT: (C)1998,JPO