Difference Between SIP Trunking vs VoIP?

Written on Oct 18, 2021.

It’s a question often asked, “What’s the difference between VoIP and SIP?

Here, we’ll explain what SIP Trunking vs VoIP are, how they work, and help you decide whether SIP or VoIP is right for you.

What’s VoIP?

VoIP stands for ‘Voice over Internet Protocol’ and describes calls made using the internet. VoIP converts your voice calls into data packets that can be transmitted over the internet. The important thing to note here is that VoIP is a voice service, which is key to the difference between it and SIP.

What’s SIP?

SIP stands for Session Initiation Protocol and is different to VoIP. It manages not only your voice calls, but also multimedia communication, including video calls, instant messaging, media distribution and a whole lot more.

SIP is a specific type of protocol that facilitates VoIP. That’s because several devices or endpoints can communicate simultaneously, it’s scalable, calls are clearer, QoS is higher and line rental and phone calls are a lot more affordable. 

It’s no surprise that we’re going to tell you that, in the battle between VoIP and SIP, SIP is the winner. If you’re running a PBX or other unified communication system in your office, there really isn’t any competition here.

VoIP with SIP Pros

-Is capable of providing fail-over to mobile devices primary internet connection is lost.


• -Can offer extreme flexibility by providing businesses with the capability to add-on options and lines as required.



• -SIP VoIP systems tend to include easy to use administrative tools for adding lines, numbers and changing the configuration.



• -SIP VoIP system can also be developed to have integrations with typical business applications and software systems for increased productivity.



• -They can also be integrated with existing PRI lines to make a hybrid communication system.

VoIP with SIP Cons

• -SIP VoIP system need high bandwidth to support a good quality of service.



• -The quality of service offered by SIP suppliers will vary.



• -Sending SIP VoIP traffic over a public web service, as opposed to a dedicated fibre-optic connection may present quality and security risks. 

The Benefits Of SIP vs VoIP

We’ve already mentioned that SIP is capable of carrying all of your multimedia communications, which is a major draw card for businesses using an office phone system. But there are a lot more benefits of going with a SIP provider:

1. Affordability

The cost of line rental is significantly lower than traditional PSTN lines and local, mobile, national and international calls are also a lot more affordable than they used to be.

2. Scalability

Your SIP provider, like Bulk Solutions,  can scale the size of your office phone network up or down without having to come into the office to install new equipment and without major cost.

3. Reliability

When you go with a provider that’s out to give you the best service available, they’ll talk to you about your data service and help you decide how to run your SIP service with the highest Quality of Service possible.

4. Redundancy and Disaster Recovery

SIP offers more re-routing options for redundancy than PSTN or ISDN service.

5. Independent Network Access

Unlike PTSN and ISDN services, SIP can be carried over any data network type, including fiber, copper and wireless networks. 

VoIP vs SIP, Making The Right Choice For Your Business

Technically, there isn’t a competition between SIP Trunking vs VoIP, because SIP is really just a protocol used to achieve VoIP… which still has it’s place.

Knowing about VoIP and SIP can be the difference between an efficient phone experience and an unreliable one.
If you’re interested in switching to SIP, we are ready to answer any question you may have at info@bulkvs.com

Please remember to keep Bulk Solutions in mind for your telecommunication needs where we value Quality and Reliability above all else.