中文
FTTR系统是一种光纤到户的系统，是实现高速广带和网络的有效方式，由于使用光纤作为基础设施，因此FTTR系统的设备和部件要求非常苛刻。本文从光纤线、光纤网络接入设备、光猫和内部连接系统等方面，详细分析FTTR系统的设备和部件要求。



首先，FTTR的光纤线要求满足电信规范，要使用重新加工的系统光纤，其最窄小径横截面尺寸为9/125微米。此外，它还必须具有良好的拉伸、弯曲和耐久性能，以确保将来从FTTR系统中受益。其次，FTTR的光纤网络接入设备，首先应是TU的Id Light的正确分配，Id Light把光纤连接到上行/下行OLT，以及把光纤连接到FTTR省网和客户端。除了上述TU外，还应配备有足够的紧凑模块，其中SFP模块要求采用行业标准，满足电信规范。

此外，FTTR还需要配备有光纤收发器，可以在多种接口中选择，其中高端模块可提供更高速度，其最新技术为Gigabit Ethernet 10 / 100/1000Base-T，支持超高速2.5Gbps以及更高，同时还能轻松实现端到端的千兆位网络。另外FTTR还需要使用国际ISO的品牌光猫，支持电信网卡的端口，如RJ45口，要求必须具有DNS/DHCP服务，EDID支持，此外还要能够支持802.11n无线标准，以满足客户端连接无线网络的需要。最后是FTTR系统的内部连接系统，它要求采用行业标准，首先要求有L2/L2 /L3交换机，其次要有电子线材，例如UTP网线和光纤网线，还要有相应的支架和适配器，以便把电子线材以安全和稳定的方式连接到交换机或光纤网络的接口上。

总之，FTTR系统的设备和部件要求比较苛刻，应遵守电信和ISO的有关规定，包括光纤线、光纤网络接入设备、光猫和内部连接系统等不同类别。此外，设备和部件也必须具有良好的抗拉强度、耐弯湾锋度等特性，以确保FTTR系统拥有更好的可靠性和可扩展性。



English
FTTR system is a fiber-to-the-home system, which is an effective way to achieve high-speed broadband and networking. As the infrastructure of FTTR system utilizes the fiber optic, the requirement of the devices and components is rather strict. This paper will analyze the requirement of the devices and components from the aspects of fiber optic line, fiber-optic network access devices, optical cat and inner connection system, etc.

To begin with, FTTR's fiber optic line must be in conformity with the telecom regulation, and using evacuated and repackaged system fibers whose smallest transverse sections are 9/125 μm. In addition, it must have the capability of good tractive strength and bending characteristics to ensure the benefits from the FTTR system. Secondly, the fiber-optic network access devices of FTTR firstly must be correctly allocated with TU's Id Light, which connect the fiber to the up/down OLT, as well as connecting the fiber to the FTTR provincial network and clients. Besides the above-mentioned TU, it also must be equipped with enough compact modules, among which the SFP modules must be in accordance with the industry standard to meet the telecom regulations.

In addition, the FTTR also requires the presence of an optical transceiver, with the availability of many interface selections, among which the high-end modules can offer higher speeds, the newest technology for which is Gigabit Ethernet 10/100/1000Base-T, supporting ultra-high speeds up to 2.5Gbps and higher, as well as being easy for end-to-end gigabit networking. Furthermore, theFTTR is required to use the international ISO brand optical cat, supporting the port of the telecom cards such as RJ45, and requiring the services of DNS/DHCP and EDID, while being able to support 802.11n wireless standard to meet clients’ demand of connecting to wireless networks. Lastly, the inner connection system of FTTR requires the application of industry standard, starting with requiring L2/L3 switches; foblowingly there must be electronic wires such as UTP network cable and optic network cable. Besides, there must be corresponding rackets and adapters for connecting the electronic wires in a secure and stable way to the switches or the interfaces of the fiber-optic network.

In a word, the requirement of the devices and components of FTTR system is rather rigorous, according to the relevant regulations of telecom and ISO, which include the different categories of fiber optic line, optical-fiber network access devices, optical cat and inner connection system. Furthermore, the devices and components must also