Localizing a remote event timestamp from a network device with an independent clock method and apparatus

摘要

A timestamp localization method and device includes two processors with independent clocks connected to a communication network. Two messages are exchanged between the processors. First a request message is sent with a transmit timestamp. Second, a reply message is sent back with receive, originate, transmit and remote timestamps. Then the remote timestamp is converted to a local timestamp using an algorithm and the timestamps from the reply message.