The master knows something about optical fiber. Let's have a look.

1. The dial-up line uses ADSL, and the maximum bandwidth can only reach 10M, and the uplink and downlink rates are inconsistent. Generally, the downlink rate is half or even less than the uplink rate.

2.*** Special optical fiber refers to an optical fiber. If the bandwidth is 100M, it will be allocated to some users * * * to enjoy this 100M, but ensure that each user reaches at least 8M or 10M. This kind of optical fiber can reach 100M when only one person uses it.

3. This is fiber-to-the-home, with a constant rate of 8M or 10M. Different from ADSL, the uplink and downlink rates of fiber are generally the same, that is, the upload and download rates are the same, which is beneficial to P2P service support.

4. The purpose of high-quality optical fiber is that operators will reach a very high standard for your optical fiber services, such as speed, reliability, stability, confidentiality and other value-added services, so it will be more expensive.

Generally speaking, how to choose depends on your own needs. For example, ordinary offices can choose ADSL. If the budget is small, you can choose 2. If the budget has enough bandwidth requirements, you can always choose 3. You can choose 4 if you have money.