Multiplex communications – Wide area network – Packet switching
Patent
1984-12-03
1987-11-03
Griffin, Robert L.
Multiplex communications
Wide area network
Packet switching
370 16, H04J 314, H04Q 900
Patent
active
047047143
ABSTRACT:
A looped data transmission system has a pair of looped transmission lines forming two transmission systems having different transmission directions, and a plurality of stations including at least one control station connected to said transmission lines of the two transmission systems. If a fault occurs in the two transmission lines of the two transmission systems in the same section, a loopback configuration is established such that stations adjacent to the faulty section send signals from one system back to the other system. With the loopback configuration being established, the stations which have received supervisory signals sent from a loopback end station send them back to the transmission line of the other system. When one of the loopback end stations has received a supervisory signal from the direction of the faulty section, it is judged that a portion of the faulty section is recovered, and the result of the judgement is communicated to the control station.
REFERENCES:
patent: 3652798 (1972-03-01), McNeilly et al.
patent: 3859468 (1975-01-01), Smith et al.
patent: 3876983 (1975-04-01), Zafiropulo et al.
patent: 4530085 (1985-07-01), Hamada et al.
patent: 4538264 (1985-08-01), Bahr et al.
patent: 4542496 (1985-09-01), Takeyama et al.
Fushimi Hitoshi
Hamada Takuji
Mizokawa Sadao
Okada Masakazu
Onuki Ken
Chin Stephen
Griffin Robert L.
Hitachi , Ltd.
LandOfFree
Method of detecting recovery from fault in a data transmission s does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of detecting recovery from fault in a data transmission s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting recovery from fault in a data transmission s will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1677346