Patent ID: 6425009
Filing Date: 2002-07-23
Classification: H04L

Abstract:
A telecommunications device, comprising:a local area network comprising redundant first and second control buses operable to communicate control data; a plurality of cards coupled to the first and second control buses, the cards operable to communicate control data using the first control bus; a data network operable to communicate non-control telecommunications data between the cards; a first monitor coupled to the first and second control buses and to the data network, the first monitor operable to detect a failure of the first control bus and to communicate a message indicating the failure using the data network; a second monitor coupled to the first and second control buses and to the data network, the second monitor operable to detect the failure of the first control bus and to communicate a message indicating the failure using the data network; and the first monitor operable to receive the message from the second monitor and the second monitor operable to receive the message from the first monitor, the monitors operable to cause the cards to communicate control data using the second control bus in response to the messages.