Both from one-way signaling mode as a protection scheme for the packet-switched delivery of time and frequency on the network method for switching to the direction signaling mode

摘要

A how to manage the accurate delivery of time in a packet network, packet network, and a peer-to-peer transmission clock hardware support at least one network element (NE), transmitting a clock hardware support is to enable local delay measurement mechanism between two adjacent transmission clock, the master (106) / slave (108) end-to-end synchronization path (112), the first set of network elements (104 ₁ , 104 ₂ , 104 ₃ ) and these transmission clock associated with the (102 ₁ , 102 ₂ , 102 ₃ ) includes, master (106) and a slave (108) , through the first set of network elements, to replace the unidirectional time stamp packet, the method, the first element of the first-set and the local delay measurement mechanism between the second element If a failure to disable occurs, the steps of the first label in at least a particular field of the first time stamp packets generated by the first element (NE1), a master from the slave (108) (106) To measure the second delay corresponding to a second end-to-end transmission delay for the time stamp packet to the (TD2), comprising the step of generating at least a second time stamp packet, and requests the bidirectional signaling mode and a step of starting to be.