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接入网作为公众通信网的重要组成部分,在完成核心网向用户端的延伸,实现用户接入,最终满足通信需求的过程中起着重要的作用。随着通信行业的转型和产业价值链的改变,接入网在整个通信网中的地位也越来越突出。光接入是接入网的重要发展方向,其主要应用模式包括光纤到交接箱(FTTCab)、光纤到楼宇/分线盒(FTTB/C)、光纤到公司/办公室(FTTO)以及光纤到家庭用户(FTTH)。现阶段FTTx网络整体的发展不局限于FTTH,应该根据业务及网络的实际情况和需求灵活选择各种应用模式。
As an important part of public communication network, access network plays an important role in completing the extension of the core network to the client, realizing user access and finally meeting the communication requirements. With the transformation of the communications industry and the change of the industrial value chain, the access network has become more and more prominent in the entire communications network. Optical access is an important development direction for access networks. Its main application modes include FTTCab, FTTB / C, FTTH and FTTH, as well as fiber to the home User (FTTH). The overall development of the FTTx network at this stage is not limited to FTTH, and various application modes should be flexibly selected according to the actual situation and demand of the service and the network.