ISPs can supply internet access
to customers via a cable, dial-up connection or a digital subscriber line, which refers to a modem and telephone lines. It is through these methods that they ensure that your internet access remains stable and uninterrupted.
Access to the internet is dependent on a network of connected cables around the globe, including anything from TV cables, copper telephone wire, and the newer fiber optic cables. ISPs help maintain this infrastructure, as they take the data you are requesting from the internet and then send it to server that has 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 is also DSL, stellite and Wi-Fi along with a host of other connectivity mediums.
ISPs are also responsible for ensuring that all of the data that is 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.
In order to have access to this data, a user or company has to 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.
They can also offer services such as phone and cable TV with this subscription, as they rely on the same infrastructure.