Method and system for transmitting voice service data of passive optical network and optical line terminal

Abstract

The invention provides a method and a system for transmitting voice service data of a passive optical network and an optical line terminal. The method comprises the steps that the optical line terminal receives uplink service data sent by an optical network unit and analyses the service type of the uplink service data; and when the uplink service data are voice service data, the optical line terminal sends the voice service data to local transmission equipment of a telecommunication transmission network through an uplink service port, and the voice service data are transferred to a soft exchange carrying network by soft exchange transmission equipment of the telecommunication transmission network. The invention further provides the corresponding system and the optical line terminal. By adopting the technical scheme provided by the embodiment of the invention, the transmission quality of the voice service data of the passive optical network can be improved, and the reliability of the system and the network can be strengthened.

Description

technical field [0001] The invention relates to passive optical network technology, in particular to a passive optical network voice service data transmission method, system and optical line terminal, belonging to the field of communication technology. Background technique [0002] A passive optical network (Passive Optical Network, hereinafter referred to as: PON) has now become a major public user access method of operators. like figure 1 As shown, since PON originally appeared as a broadband access network, each operator directly connects the OLT to the IP metropolitan area network, and the OLT receives the access initiated by the Optical Network Unit (Optical Network Unit, hereinafter referred to as: ONU) Business, uplink through IP MAN. [0003] With the development of PON technology, the current PON bears more and more types of services. In addition to the initial broadband services, it also includes voice services that require higher transmission quality. The OLT co...

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Problems solved by technology

[0003] With the development of PON technology, the current PON bears more and more types of services. In addition to the initial broadband services, it also includes voice services that require higher transmission quality. The OLT comprehensively transmits the access services of various types of services. For the IP MAN, the IP MAN splits broadband services and voice services, uplinks voice services to the softswitch bearer network, and uplinks broadband services to the IP backbone network. (Virtual Local Area Network, hereinafter referred to as: VLAN), setting priority, configuring virtual private network (Virtual Private Network, hereinafter referred to as: VPN) and other QoS mechanisms to enhance security and reliability, improve transmission quality, but it is difficult to truly achieve voice services The required end-to-end telecom-level performance

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