Patent ID: 7139273
Filing Date: 2006-11-21
Classification: H04J,H04L

Abstract:
1. A method for synchronizing the transmission of real time synchronous data packets over asynchronous optical networks between at least two user terminal nodes, using a receiver and transmitter module implemented within intermediating communication devices that are connected between the TDM equipment and the asynchronous optical network, said method comprising the steps of: A. Encapsulating date packets to include a sequence number in the data packet payload at the transmitter terminal node; B. Providing the transmitter terminal node with Stratum 3, Stratum 3 E SMC or SEC classified clock pulse; C. Preparing encapsulated data packets for transmission by the transmitter device according to the stratum 3 clock pulse; D. transiting prepared data packets through an asynchronous network; E. Receiving incoming data packets from an asynchronous network at the receiver terminal node; F. Detecting the sequence number order of the received data packets at the receiver terminal node; G. Compensating the packet rate of received data packets in the case of detecting offsets of non sequenced data packets enabling the receiver to receive the clock frequency rate that is equivalent to the transmitting frequency of the incoming packets; H. Dividing the frequency rate of the incoming data signal; and I. Attenuating the data transmission signal amplitude for reducing jitter and wander in compliance with stratum 3 accuracy standards.