ISPs can supply internet access to customers via a cable, dial-up connection, or a digital subscriber line, which refers to modem and telephone lines. It is through these methods that they ensure that your internet access remains stable and uninterrupted.
Access to the internet depends on a network of connected cables around the globe, including anything from TV cables, copper telephone wires, and the newer fiber optic cables. ISPs help maintain this infrastructure, as they take the data you request from the internet and then send it to the server with the information for you through these interconnected cables.
Traffic will start at your home modem, and then go through several ISP networks and cables, before reaching its final intended destination. The underlying technology behind all of these cables includes, as we mentioned above, telephone lines, TV cables, and fiber optic cables, but now there are also DSL, satellite, and Wi-Fi, along with a host of other connectivity mediums.
ISPs are also responsible for ensuring that all of the data being transferred when users are accessing the internet through them is safe and secure. They protect users from cyber threats and warn them if they are at any risk. Often they will share information with other ISPs for threats, dangers, or emergencies that could harm their users, for example, through an email firewall
To access this data, a user or company must enroll in the provider’s service.
Typically, this is in the form of a monthly subscription. The ISP will then provide users with any equipment they may need, such as a modem and a set bandwidth and speed to access the internet based on how much they pay.
Large companies, government buildings, educational institutions, or hotels, for example, will typically pay more than an individual home as they have to cover a lot of users and require greater bandwidth and speed.
With this subscription, they can also offer services such as phone and cable TV, as they rely on the same infrastructure.