Comprehensive comparison and analysis of Fttb+lan and Epon

With the rapid development of network and the demand of telecom operators to enlarge capacity, provide profitable service, simplify deployment and reduce operation cost, optical network and optical fiber communication have gradually become the main characters of network infrastructure construction because of their large capacity and high speed. Both Fttb+lan and epon are optical access devices based on Ethernet technology. Due to the maturity and simplicity of Ethernet technology, and the use of cheap and stable high-speed optical fiber as transmission media, these two methods have gradually emerged, becoming the first choice of many access means. Fttb+lan Technical Analysis Fttb+lan Broadband access is based on Ethernet technology, the use of high-speed optical fiber network to achieve gigabit to the community, combined with the general twisted-pair to achieve hundred trillion to the building, 10 trillion to the user. Fttb+lan access mode directly provides users with the transmission channel based on IP service, the essence of which is a two-layer medium access control technology.

The Fttb+lan broadband access network based on Ethernet technology is composed of the local side equipment and the user side equipment. The local equipment is generally located in the operator's planned access node room, the user side equipment is generally located in the community room or residential buildings, or the local equipment is located in the commercial building, while the user side equipment located in the floor. The local side equipment provides the interface with the IP backbone network, the user side device provides the 10/100base-t interface with the user terminal computer. A one-to-one connection is used between the local device and the user side device. The local side equipment has the function of gathering user side equipment management information.

FTTB as a high-speed Internet access, easy to use, Low-cost, users do not need to add a dedicated modem, but the disadvantages we should also see, in particular, it brings the problem of building integrated wiring and using twisted pair of transmission distance caused by the restrictions.

Analysis of Epon Technology

In many ways of broadband access, PON is an Up-and-comer. PON is an optical distribution network pointing to multiple points, between optical line terminals (olt,optical lines Terminal) and multiple Optical Network units (onu,optical Network unit) through a passive fiber distribution device (Pos,passive optical Splitter) connection. In the PON system, downlink data is broadcast from Olt to all ONU, while the uplink data converge from each ONU to the Central Bureau side Olt.

The basic idea of epon is to introduce a mature Ethernet protocol into the PON system to improve efficiency and reduce equipment costs. With the development of Ethernet technology, EPON will be able to easily provide 2.5G to future 10G bandwidth. Because the ip/ethernet structure dominates the entire data network, and Ethernet support for IP is very mature, for epon system, can directly use IP protocol for management, including client devices and business management, can be very simple to achieve, therefore, The advantages of epon are also evident in supporting the flexibility and convenience of integrated business and multiple service quality.

For the end user, also do not need to increase peripherals, according to the network card can be connected to the Internet, simple and easy to use; In the future, the end user will be able to easily upgrade to a single bandwidth to the users. Comparison of Fttb+lan and Epon

Common Fttb+lan and Epon are based on Ethernet technology broadband access means, from the Bureau end to the client is the main part of the use of optical fiber, the end of the twisted pair, you need to consider the building wiring and twisted-pair transmission distance restrictions.

From the user control point of view, PPPoE or web+portal and other commonly used authentication methods are tested for these two access means.

Relative to DSL and other access means, users through Fttb+lan or epon access, no need to add other peripherals, to facilitate the economy, truly to provide users with exclusive bandwidth.

Difference

Epon and Fttb+lan Compare, the biggest difference in from the bureau end to the client side, the backbone of epon based on point-to-point topology, and Fttb+lan is based on point-to-point topology, where the consumption of the number of trunk optical fiber and the number of optical ports of the side device will expand with the size of the network, Enlarged in several times.

Epon itself is one of the standards of the whole business Access network organization definition, it can provide the corresponding interface to access other than the IP business, including voice and video, real full service access, and Fttb+lan is only applicable to IP network solutions, through which access to voice or video services, It is necessary to pass the protocol conversion and packet encapsulation, can not guarantee the voice and video applications to delay and jitter and other service quality requirements.

With the rapid development of network and the demand of telecom operators to enlarge capacity, provide profitable service, simplify deployment and reduce operation cost, optical network and optical fiber communication have gradually become the main characters of network infrastructure construction because of their large capacity and high speed. Both Fttb+lan and epon are optical access devices based on Ethernet technology. Due to the maturity and simplicity of Ethernet technology, and the use of cheap and stable high-speed optical fiber as transmission media, these two methods have gradually emerged, becoming the first choice of many access means.