Packet-switched communications network with parallel virtual circuits for re-routing message packets
US4884263A · kind A · utility
102Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1989 |
| Grant date | Nov 28, 1989 |
| Priority date | — |
| Expiry date | Mar 17, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/247
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a packet-switched communications network, each of a plurality of terminals sequentially transmits control packets in response to a request for call before sequentially transmitting message packets. A switching node of the network is responsive to the control packets for establishing first and second logical channels through the network. Message packets are propagated through the first logical channel. The established logical channels are monitored to detect an abnormal condition. In the event of an abnormal condition in the first logical channel the message packets are re-routed to the second logical channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.