Abstract: The present invention provides a method for synchronizing the transmission of real time synchronous data packets over asynchronous optical networks between at least two user terminal nodes. This methodology proposes to use a receiver and transmitter module implemented within intermediating communication devices that are connected between the TDM equipment and the asynchronous optical network. According to this method, sequence numbers are encapsulated within the data packets payload at the transmitter terminal node, and a Stratum 3 classified clock pulse is provided to the transmitter terminal node. At the receiver module the incoming data packets sequence number order is identified. In the case of detecting offsets of non-sequenced data packets, the clock rate of the receiving note is compensated. Finally the frequency rate of the incoming data signal is divided and the data transmission signal amplitude is attenuated for reducing jitter and wander in compliance with stratum 3 accuracy standards.

Abstract: A new method for synchronizing transmissions of real time synchronous data packets over an asynchronous network between two terminal nodes is disclosed. The synchronization procedure is implemented within intermediating communication devices, which connect between the terminal nodes TDM equipment and the asynchronous network. Each communication device comprises local clocks, which are activated by a Stratum 2/3/3e/4/4e pulse generator. The local clocks synchronization is based on the transmission of a reference timestamp packet through an asynchronous network. Based on this timestamp references, an internal digital PLL is used for attenuating the jitter/wander in data transmission signal in accordance to Stratum 2/3/3e/4/4e accuracy standards. The DPLL data result is then processed to be used by the local clock of the receiving terminal.

Abstract: The present invention provides a method for synchronizing the transmission of real time synchronous data packets over asynchronous optical networks between at least two user terminal nodes. This methodology proposes to use a receiver and transmitter module implemented within intermediating communication devices that are connected between the TDM equipment and the asynchronous optical network. According to this method, sequence numbers are encapsulated within the data packets payload at the transmitter terminal node, and a Stratum 3 classified clock pulse is provided to the transmitter terminal node. At the receiver module the incoming data packets sequence number order is identified. In the case of detecting offsets of non-sequenced data packets, the clock rate of the receiving note is compensated.

Abstract: The present invention will allow the use of the asynchronous Ethernet MAN as if it was a regular fiber optic line, while eliminating the uncertainties of it's cloud environment. The invention provides a new method for synchronizing transmissions of real time synchronous data packets over an asynchronous network between two terminal nodes. The synchronization procedure is implemented within intermediating communication devices, which connect between the terminal nodes TDM equipment and the asynchronous network. Each communication device comprises local clocks, which are activated by a Stratum 2/3/3e/4/4e pulse generator. The local clocks synchronization is based on the transmission of a reference timestamp packet through an asynchronous network. Based on this timestamp references, an internal digital PLL is used for attenuating the jitter/wander in data transmission signal in accordance to Stratum 2/3/3e/4/4e accuracy standards.