At present, with the rapid development of the entire telecommunication services, from fixed-line to wireless, from narrowband to broadband, from voice services to multimedia services, various technologies applied to telecommunication networks emerge in endlessly. Optical communication technology has always been one of the focuses of the entire communication field.
At the access network level, using the traditional copper wire access technology, there are many problems in the copper cable transmission link, such as high copper cable price, high construction investment cost; high risk of copper cable being stolen or damaged; Maintenance costs such as cable repair and update increase; in addition, copper cable bandwidth resources are limited, which cannot meet users' needs for high bandwidth.
With the rapid growth of broadband users, optical access technology has many advantages such as wide coverage, long transmission distance, high bandwidth, high security and confidentiality, and low construction and maintenance costs, making it a new highlight in access network construction.
Currently, the main technologies for broadband access adopt ADSL, ADSL2+, VDSL, VDSL2, and LAN, etc., and the construction mode is mainly based on the centralized mode of the central office. It is precisely because ADSL is based on telephone copper cables, and its rate has a very close relationship with the user's copper cable length, line quality, and outgoing rate. The actual network access rate is much lower than the theoretical value. With the development of broadband networks, the line rate has become the bottleneck for developing new users and adding new services. In order to provide high-bandwidth value-added services such as triple play, broadband speed-up is a must for operators. For DSL lines, one of the most important characteristics is that the closer the distance, the higher the bandwidth that can be provided. Therefore, in order to meet the needs of high-bandwidth services such as triple play, the broadband access equipment (DSLAM) must be gradually moved down from the central office to a place closer to the user, which has become the only option for the continued existence of DSL access. Making optical fiber access gradually close to users, "optical access and copper exit" is an inevitable trend and choice of broadband development. Therefore, operators and equipment manufacturers have successively launched various optical access solutions to replace traditional copper access, thus It can meet the needs of various services such as voice, data and video, and "light advances copper and retreats" has become a broad consensus among all walks of life. However, for fixed-line operators who use copper wires as their massive stock assets, how to combine the existing copper cable resources on the Internet to find a smooth evolution path of "light into copper and back out" can take into account the balance between CAPEX and OPEX. Get the best input-output ratio.
Shenou Communication Equipment Co., Ltd. provides a variety of comprehensive service access solutions for "fiber into copper out", to ensure the feasibility, necessity, advancement and scalability of various solutions, according to the distance from the fiber to the user, each According to different considerations of individual users' bandwidth requirements, existing pipeline resources, and operation and maintenance costs, we can deploy corresponding access networks and solutions to ensure that users can effectively experience diversified communication services while effectively reducing operators' investment in network construction. and operation and maintenance costs.