Primus IT is committed to the research and development of PON technology and provides the best solution for the realization of FTTH. Primus IT can cooperate in the development according to the special requirements of customers, and provide customers with a complete set of FTTH solutions based on a complete product line.
FTTH (Fiber to the home) is a transmission method of fiber communication. Specifically, FTTH refers to the installation of optical network units (ONU) at home users or corporate users and is the type of optical access network application that is closest to users in the optical access series except for FTTD. The notable technical feature of FTTH is that it not only provides greater bandwidth, but also enhances the transparency of the network to data formats, rates, wavelengths, and protocols, relaxes the requirements for environmental conditions and power supply, and simplifies maintenance and installation.
1. Very large transmission medium and speed and high bandwidth.
2. Its bandwidth is relatively wide, and the long distance is exactly in line with the large-scale use of operators.
3. Easy and fast installation.
4. Low-cost maintenance.
5. Low losses in network.
6. Enhance the transparency of the network to the data format, rate, wavelength and protocol.
7. Relaxed requirements on environmental conditions and power supply.
8. Increased reliability of broadband transmissions in comparison to other networks, either today or in the future.
FTTH is a comprehensive access solution for all services. Although the main driving force of FTTH is broadband video services in the future, FTTH must be able to support a variety of existing narrowband and broadband services, as well as possible new services in the future. FTTH system must be able to provide integrated access, so that users can enjoy multiple services at the same time.
PON technology, especially EPON, is widely used in the access network. It promotes the simplification of the network level, makes the network structure clear, management and maintenance more convenient, and greatly reduces the cost of computer room, electricity, and maintenance. The current access network construction is widely implemented by EPON, and common networking methods include FTTB+LAN, FTTB+EOC, and even FTTH.
In the past, EPON devices were mostly independent box-type devices with low port density, low capacity, and simple business functions. Now, operators mostly adopt integrated equipment that combines EPON and Layer 3 switches, especially the integration of large-capacity, multi-function switches. EPON is inserted into the chassis of the switch as a plug-in card (multiple EPON modules can be inserted), so that the OLT part of EPON and the aggregation layer switch are integrated, which further simplifies the network structure.
Another advantage of this is to make business processing more flexible and convenient, such as flexible QinQ technology, VLAN three-layer termination, and even MPLS VPN services. At present, the integrated equipment with the highest business performance can provide 160 PON ports, which fully meets the operators’ high-bandwidth and large-capacity access requirements.
In the optical access family, there are FTTB (Fibre To The Building) fiber to the building, FTTC (Fibre To The Curb) fiber to the roadside, FTTSA (Fibre To The Service Area) fiber to the service area, and so on.
When the optical fiber is directly connected to the user's home, there are no restrictions on its bandwidth, wavelength and transmission technology. it is suitable for the introduction of various new services. it is the most ideal service transparent network and the ultimate way for the development of access network. Although the development speed of mobile communication is amazing, because of its limited bandwidth, the terminal volume can not be too large, the display screen is limited and other factors, people still pursue the fixed terminal with relatively superior performance, that is, they want to achieve fiber to the home.
The charm of fiber to the home lies in its great bandwidth, which is the best way to solve the "last kilometer" bottleneck from the Internet backbone to the user's desktop. With the upgrading of technology, the cost of fiber to the home is greatly reduced, which will soon be comparable to DSL and HFC, which makes it possible to make FTTH practical. In addition, FTTH technology is also used to solve the "last kilometer" problem in the information superhighway. FTTH+ Ethernet is much faster than ADSL and ISDN.
Speaking of FTTH, we must first talk about fiber access. FTTH belongs to the access network part. The access network is the part from the local office or remote module to the user, which mainly completes the multiplexing and transmission functions, and generally does not include the switching function. Historically, this part was also called the local loop or subscriber loop. According to the definition of ITU-T, FTTH is the entrance of the fiber to the household. There is no copper wire between the end office and the household. The FCC in the United States defines a new meaning for the "H" in FTTH. Family, including small business establishments.
EPON and GPON have their own advantages and disadvantages. GPON is superior to EPON in terms of performance indicators. However, EPON has advantages in time and cost. GPON is catching up. Looking forward to the future broadband access market, it may not be a substitute for others, but coexistence and complementarity. For customers with high bandwidth, multi-service, QoS and security requirements and ATM technology as the backbone network, GPON will be more suitable. For cost-sensitive, QoS, and low-security customer groups, EPON has become the dominant one.
1. It is a passive network, from the central office to the user, it can basically be passive in the middle;
2. Its bandwidth is relatively wide, and the long-distance is just in line with the large-scale use of operators;
3. Because it is a service carried on optical fiber, there is no problem;
4. Because of its relatively wide bandwidth, the supported protocols are relatively flexible;
5. With the development of technology, more complete functions have been developed including point-to-point, 1.25G and FTTH methods.
In the optical access family, there are FTTB (Fiber To The Building) fiber to the building, FTTC (Fiber To The Curb) fiber to the roadside, FTTSA (Fiber To The Service Area) fiber to the service area and so on.
FTTH is the Triple Play broadband solution that the final telecom network intends to provide. Each household provides one-core or two-core optical fiber, and uses passive optical network PON to provide low-cost, high-stability, and home users who meet the needs of voice, data and image services. The technologies and networks currently in use include E-PON, A/B-PON, G-PON, and WDM-PON.
Ensuring the high stability of network operations tests the pre-test work of PON service providers, the ability of network monitoring in the service, and the ability to quickly check and repair when obstacles occur, including: PON fiber quality measurement, OLT and ONU network traffic Test, All in One's PON fiber and network test, etc.