Which of the five common optical fiber broadband access methods is the best?

There are two common optical fiber access modes: ADSL access mode and HOMEPNA access mode.

I. Optical fiber+Category 5 cable access mode (FTTx+LAN)

Based on "Gigabit to the community, 100 Mbps to the building, 10 Mbps to the user", the fiber +5 cable access mode is particularly suitable for China's national conditions. It is mainly suitable for residential quarters, enterprises and institutions, colleges and universities with relatively concentrated users. FTTX is optical fiber transmission to (roadside, community, building-), and LAN is local area network. Mainly for users who need broadband Internet access in residential quarters, high-grade office buildings, dormitories for teachers and students in colleges and universities, individual users or enterprises can realize high-speed Internet access and high-speed interconnection through five types of network cables connected to Ethernet cards in users' computers.

1, preferably

From the telecom operator's local optical fiber switch directly to the user's home, and then directly through the optical network card, it is basically an all-optical network, with a bandwidth of up to 1000M or even 10000M, which is exclusive and generally does not appear.

2. Medium level

It is switched locally from the telecom operator to the user's home, and then connected to the user's computer through the optical fiber transceiver (photoelectric conversion). Most optical networks have a bandwidth of up to 100M or even 1000M, but generally the upper limit is 100M, and the bandwidth of individual users is low.

3. Common types

Starting from the local telephone exchange of telecom operators, optical fiber is directly connected to the user's building, and then converted into twisted pair through the building exchange to access the user's computer. For some optical networks, the bandwidth can be as high as 100M, but it is generally capped at 100 m (2M, 4M, 8M, etc.). ), and use PPPOE dial-up Internet to share bandwidth (the sharing situation depends on the number of users in the building). Also known as LAN access mode, it is a mode often used before optical network upgrade, and the other is ADSL.

4. Upgrade the optical network mode 1.

From the OTL switch at the local end of the telecom operator to the user's home through optical fiber and passive optical splitter, and then through ONU (also known as optical cat), it is converted into twisted pair and connected to the user's computer. The bandwidth of most optical networks can reach 100M, but at present, the bandwidth is generally limited to 20M, and PPPOE dial-up internet access is used to share the bandwidth (the sharing situation depends on the bandwidth of OTL downlink fiber and the splitting ratio of passive optical splitter), which is the so-called pure optical network at present.

5. Upgrade optical network mode 2

From the OTL switch at the local end of the telecom operator to the user building through optical fiber and passive optical splitter, and then through the ONU switch in the building, it is converted into twisted pair to access the user computer. In some optical networks, the bandwidth can reach 100M, but at present, it is generally limited to 20M, and PPPOE dial-up internet access is used to share the bandwidth (the sharing situation depends on the bandwidth of OTL downlink optical fiber, the spectral ratio of passive optical splitter and the number of users in the building).

Second, the optical fiber direct access mode

It is provided for large enterprises, institutions or group users who have exclusive demand for high-speed optical fiber Internet access, and the transmission bandwidth range is 2M- 155M.

Business features: High-speed Internet access or high-speed interconnection between enterprise LANs can be realized according to the needs of user groups for different rates. At the same time, due to the high upload and download bandwidth, optical fiber access mode is especially suitable for online applications such as distance education, telemedicine, video conferencing and so on, which release a large amount of external information.

Suitable user groups: concentrated users living in houses, communities and office buildings that have been or are convenient for comprehensive wiring; Large enterprises, institutions or group users with exclusive demand for optical fiber.

You can sit in the right place and see your access and bandwidth.