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What are the Differences Between SIP and VoIP?


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The question regarding the difference between VoIP and SIP is often asked because both are amazing technologies that have transformed the way we communicate in our everyday lives. Knowing the difference between these two is very important because it helps differentiate a reliable phone experience from an unreliable one. The choice becomes crucial when it comes to a phone solution for office use.

Following is the introduction of VoIP and SIP as well as their difference:


Short for ‘Voice over Internet Protocol’, VoIP is primarily used for making calls via the internet. When you are calling/communicating via this protocol, your voice call is converted into data packets which is then transmitted over the internet. And this is the primary difference between VoIP and SIP; VoIP is a voice service while SIP is something more.

As you may already know, protocol refers to setting some digital rules which are used to manage communication between two or more digital devices. Both ends must follow the same digital rules for the communication to be successful. It’s like sending something via snail mail. You will need a stamp on the envelope in order to send the mail properly. And you will need the correct address in order for it to be received on the other end. Otherwise, the communication will fail. VoIP works on a similar concept.


Short for ‘Session Initiation Protocol’, SIP is relatively different from VoIP. Apart from managing voice calls, SIP also handles multimedia communication such as instant messaging, media distribution, video calls, and much more.

SIP facilitates VoIP, which is often referred to as the ‘VoIP Superhighway’. That’s because numerous endpoints or devices can communicate simultaneously, calls are clearer, the service is scalable, phone calls and line rental are a lot more affordable, and QoS is higher. It’s no surprise that this specific type of protocol is becoming the most favored communication solution for businesses around the world.

It’s also not a surprise that when you compare SIP and VoIP, SIP is the obvious winner. There really isn’t any competition if you are running a unified communication system (such as PBX). Another thing to note here is that SIP can be carried over many data network types such as wireless network, copper network, as well as fiber. So you can easily switch to NBN without worrying about it affecting your SIP service.

How to Choose the Best Communication Protocol for Your Business?

SIP is simply a protocol that is used to achieve VoIP, so technically there isn’t a competition between the two. However, it is recommended that you talk to your chosen provider if you want to reduce your monthly phone and improve your communication. Tell them what you hope to achieve with SIP or VoIP service as well as how your staff uses the phones. They will guide and recommend you the most suitable service according to your requirements. Make sure you choose a provider that is helpful, genuine, and delivers savings. Good luck!

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