SIP is a protocol that gives you a unique identifier (a SIP number or address) on the Internet that you can use as a phone number or email address to make and receive free calls. Use it to reach any SIP, fixed line or mobile user worldwide. Here's how to register for a SIP account.

The first thing you need to do is choose a SIP service. There are plenty of them. You can choose a free SIP account as a beginner, or if you need extra features and services, you can opt for a premium SIP account. Here is a list of free SIP providers.

Once you have found a service, use your browser to go to the website and look for the link that will take you to the registration page. This is usually located near the login option. Once on the page, you will be presented with a registration form that you will need to fill out.

As with an email address, your username should be tailored to the public image you wish to maintain through your SIP activities. The username must be unique, and your preferred name may already be in use. The username you choose will then become part of a SIP address, which resembles an email address with the @ symbol; for example, [email protected].