Novel techniques are disclosed for continuously monitoring parameters of delay between two nodes in a telecommunication network such as an ATM or frame relay network. The techniques use measurement cells, i.e. test cells, test frames, performance management ATM OAM cells, or performance management frame...http://www.google.fr/patents/US5878032?utm_source=gb-gplus-shareBrevet US5878032 - Delay monitoring of telecommunication networks
