A method, a system, and a network entity enable a detection of a connection fault and perform the switch-over in less than 50 ms. CV packets are being sent, for example, 1/10 ms (1 CV packet per 10 ms) or 1/15 ms (1 CV packet per 15 ms). The interval of the CV packets, consequently the frequency for...http://www.google.com/patents/US7296177?utm_source=gb-gplus-sharePatent US7296177 - Method, system, and network entity for detecting a connection fault
