What is an SIP address and who needs it?
10:21 08 June 2017
In essence, an SIP address simply means the devices’ IP address on a Local Area Network (LAN). It works by using a simple address format similar to email and HTTP, which is used to identify the recipient of the call. The simplified format works over the Internet although a more user-friendly alternative is to the use of domain name rather than the public IP address and allowing DNS to resolve the name for you.
However, these days when the majority of devices use IPv4, it is recommended to use a service provider that will provide you a routing service and act as a proxy client. After you sign up with the service provider and create username and password, you will obtain an SIP address that look like firstname.lastname@example.org. With this address, others will be able to reach you on the Internet.
If you have an existing domain name as well as a matching email address that has a corresponding MX record that matches your networks’ public IP address, you have the option to match it with your SIP address. DNS will then resolve the domain name as long as it has a unique SIP address within your LAN.
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