A passive optical network system for realization of TDM service based on Ethernet

Abstract

This invention provides one light network system without source based on Ethernet of TDM business, which comprises fiber branch connection light path terminal and light internet unit, wherein, the terminal and unit are set with TDM business adapter; the said terminal TDM business adapter adopts light network send clock to seal the TDM business data or analysis; the said light network unit TDM business adapter by use of light network receive clock for analysis or sealing.

Description

technical field [0001] The invention belongs to the Ethernet-based passive optical network technology, and in particular relates to an Ethernet-based passive optical network system for realizing TDM services. technical background [0002] The Ethernet-based passive optical network EPON system realizes low-cost, long-distance high-speed access, and is considered to be a new trend of broadband access. Since the EPON system is based on Ethernet technology and does not provide an end-to-end transparent clock, when providing TDM with strict timing requirements, the timing clock signal must be recovered by using system timing or simulation. The current common practice in the industry is to use circuit emulation, which encapsulates TDM service data and clock information into IP data packets, and recovers service data and clock signals from the IP data packets when receiving them. The implementation of this method is difficult, the cost is high, and the accuracy of the recovered cl...

AI Technical Summary

Problems solved by technology

The implementation of this method is difficult, the cost is high, and the accuracy of the recovered clock is not satisfactory. In actual use, the provider of the IP service needs to guarantee the QoS of the TDM service data packet, which is inconvenient and consumes resources.

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