Closely Knit: What Is the Relationship Between SIP and VoIP?

21st March 2020

While you may have heard that the landline phone is a dying technology, you likely haven’t heard the numbers to back up this claim. According to recent surveys, 95% of people in the UK state that they wouldn’t miss their landline phone systems if they were removed from their lives altogether.

At home, people are switching over to mobile systems to contact family and friends. But what about in the workplace? SIP trunking and VoIP calling systems have become an increasingly popular calling alternative in professional settings lately, and with good reason.

Read on to learn about SIP vs VoIP, what they do, and why they’re superior to other office telecommunications systems!

What Is SIP?

Sessions Initiation Protocol (SIP) is a communications system that hooks your phones up to your WiFi. SIP trunks are an initiations technology that begin and maintain calls over the internet.

This is an effective way to communicate with both clients and other branches of your business because you won’t need a special system that hooks up a landline phone system. Instead, SIP trunks can be put onto your computer (as well as telephones) and accessed over the internet.

How Does VoIP Work?

If you’re like most people, you’ve likely made a call over Skype or Facebook Messenger before. These function over a Voice over Internet Protocol (VoIP) network. These online communications technologies send data between yourself and another party anywhere in the world, meaning that long-distance calls are no-frills and inexpensive.

A VoIP system improves productivity by being more cost-efficient than other phone systems, creating fewer garbled or dropped calls, and having direct add-ons such as voice-to-email messaging and caller ID.


Upon understanding both SIP and VoIP, you may wonder what the difference between them is. After all, they both are internet-based communications systems!

In the simplest terms, SIP trunks make VoIP software run. They’re the technology that works in the background to get the VoIP software that you use to start up and be ready to make calls.

SIP trunks are more data than anything else–you can’t make actual calls on them. They’re just an initiations software to make online calls possible.

Besides being internet-based, SIP and VoIP have a couple of other similarities, however. Both are cost-efficient–paying the bills of both SIP and VoIP software can amount to less than paying one landline bill. They also both have been rising in popularity recently, so it’s necessary to get these packages if you want to remain competitive in your industry.

Get a Great Calling Package

Getting the right telecommunications system for your business is essential to ensure day-to-day productivity.

Now that you know all about SIP vs VoIP and why you need both of these technologies for your business, it’s time to get started. Visit our contact page to ask any other inquiries you may have before getting your new phone systems. Once that’s sorted, we can help you find the best possible deals on SIP and VoIP packages in Great Britain.

Good luck!