Unicom's base station construction has covered the country. These base stations are all connected to the switch through the optical fiber and China Unicom.

At present, China Unicom is actively developing new services based on its existing network resources. For example, with the base station as the center, some business halls are established around the base stations, and each business hall opens several telephone services. The local area network of the business hall is connected to the billing center, office system, and Internet access system of the Unicom operators. Generally, the billing information and office system can use an Ethernet interface. The Internet service interface needs to use another Ethernet interface. That is, the internal network and the external network can use different Ethernet channels. It is unnecessary to use a security system such as a firewall.

There are also some industrial and mining enterprises, government agencies, and residential communities that need to build their own broadband service networks and private line telephone systems. This can also use Unicom's base station resources to expand Unicom's business scope and create new profit growth points. This type of Ethernet is usually connected to the Internet and has a high bandwidth.

Because the laying of optical fiber is currently much cheaper than laying cables. Therefore, China Unicom's access to users often uses fiber access.