Can I Use My Own Router With CenturyLink? So, there are more questions, some of which we answer here. Also, modems and routers have to be CenturyLink-compatible with the network to work. Still, people have many queries regarding the functioning of this type of connection and its equipment. The connection is now widely available and market trends are shifting towards it. People Also AskĬenturyLink Internet is DSL-based, so it is not like most other internet providers. They even get connection services from tier 1 service providers. Rather, they rely on tier 2 service providers to provide them transit services. Tier 3 service providers are the trickiest of all tiers, as they have no transit or peering relationships. It doesn't have the data based solely on tier 1 but gets some of it from tier 3 service providers. It has transit purchases, so it provides a higher range of internet data. The tier 2 CenturyLink internet is more widely used. There is no purchase of transit services in tier 1, so it has to compete with other tier 1 networks only. The internet on this tier is smooth and has high speeds, along with greater area coverage. They help establish connections between countries and even continents. Tier 1 network providers have an extensive global reach. Here are those three with all the information you need. There are basically three ISP-approved internet tiers that CenturyLink sticks to. Each has its own specifications and functions to meet the requirements of different users. As with other products, CenturyLink internet tiers are the levels of service they offer.