Abrar Jussab • 28 April 2022

Voice over Internet Protocol (VoIP), a well-established technology, rapidly replaces analogue phone technology and is now a standard worldwide. Research often leads to one question. What is the difference between fixed VoIP phone numbers and non-fixed VoIP phones?


This blog will help you understand the impact of this new technology on where calls are made. Learn how to find the best VoIP numbers to enhance your VoIP phone system.

fixed and non fixed voip numbers

What is a VOIP number?

A VOIP number is just an ordinary telephone number. All telephone numbers are routed through PSTN (Public Switched Telephone Network), which decides how to route the number to its final destination. That final destination could be a traditional analogue line, an ISDN line or a VOIP line. It is therefore possible to convert any number to any of these options – it is not the number that matters, it is where it is routed to those matters.

How Does VoIP Phone Work?

VoIP, which stands for Voice over Internet Protocol, allows you to place calls over the internet. VoIP calls are converted to data packets and sent via an IP network. You don't need a physical phone line - you only need an internet connection.


A VOIP line can be used anywhere, not tied to any particular location. A VOIP line can be used with a softphone, which is software that runs on a computer or mobile phone and registers a line to the provider via the internet. It doesn't matter where the device is located.

voip phone system working

What is a Fixed VoIP Phone Number?

A fixed VoIP number is registered to a physical address. It is still an internet-based telephone line, but it is not misunderstood. It only has an account owner and a registered address with the Emergency Service Database. So, this allows Emergency Services to identify the call's origin if the caller cannot provide an address.


This address could be either a residential or company office. Porting is a process that allows VoIP numbers to be transferred easily. A previously terminated number on an analogue line can now be converted to a VOIP number.


Fixed VoIP Phone numbers can be used to make and take calls. However, softphones are not required to register a physical address with the ESDB. The only way to trace the call is via an IP address. This information is only available through an Internet Service Provider (ISP).

what fixed voip number

What is a Non Fixed VoIP Phone Number?

what non fixed voip number

Non-fixed VoIP numbers are not associated with physical addresses or have not been registered in the Emergency Services Database. It is also known as a virtual number. It can be used in the same way as fixed VoIP numbers but is rarely an alternative to the entire phone system.


Non-fixed VoIP numbers don't need a fixed address. They can be associated with any geographic location. So, this makes them a great choice for customers who don't live in the same area.


Non-fixed VoIP means you don't need an address to have a number that corresponds with yours. So, this is great for global teams and remote communications, such as a call Centre or a team that works across multiple sites.


It's easier to obtain non-fixed VoIP numbers. They are often provided by low-cost and free services such as Skype and Google Voice. They are a popular option for scams and fraudulent activity.


It is important to remember that a non-fixed number should always be your last resort in an emergency. It is difficult to trace phone calls to 999 made from a non-fixed telephone number. 

Comparison between Fixed VoIP and Non-Fixed VoIP Numbers

Let's first look at the commonalities between fixed and unfixed VoIP numbers:

  • Both numbers are depending on Internet line.
  • Both numbers are had same VoIP benefits as before, such as lower costs and easier use.
  • Easily set up to send and receive text messages.

Fixed VoIP Number Specifications:

Fixed VoIP means a physical address is registered with Emergency Services Database. It is not possible for the caller to know what type of line they are calling. The number being dialed looks just like any other number. The only difference is to the owner of the number and whether it has been registered with the ESBD.


A company that wants to move to VoIP, but wants to retain all the features of a traditional phone system can be assured that they can move their numbers to a Fixed VoIP system, and that the location of the office can be registered with the ESDB to ensure that Emergency Services will know the location of the number (where it is registered to). 

Non-fixed VoIP Number Specifications:

If you don't have a local presence but need a local number, non-fixed VoIP can be a great solution. You might be in the U.S. but have Canadian customers or other international customers.


By using DID numbers, you can ensure that employees' phone numbers are in the same format as the company number. This way, employees have an appropriate number for their location and it's easier to dial them up!


Depending on which provider you choose, unlimited calling is possible. You can get voicemail, queuing and conferencing calling. Non-fixed VoIP numbers are often the best option for fraud. However, systems that combat it are constantly improving. So, this has given non-fixed VoIP a better name and makes it more accessible to businesses.


Register your non-fixed VoIP number through directories such as Yelp, Google My Business and Bing Places. So, this will display most of your company information to people searching for your phone number.


Some apps match your phone number with your online business information, increasing how people answer the phones.

Which VoIP Number is best: Fixed or Non-Fixed VoIP Number?

The Non fixed VoIP numbers are best chosen. While there are some nuances to non-fixed virtual numbers, most of these limitations have been addressed. Based on the information in this guide, your needs as a VoIP user can help you make the best decision.

 

Secure internet services, free-market data warehouses and regular updates of the CNAM have put an end to concerns about non-fixed VoIP numbers.

 

However, VoIP numbers can impact your ability to reach public safety agencies in a timely fashion. Make sure you train your staff to use their mobile phones instead.

 

The key is choosing the right VoIP provider. Choose the provider that offers excellent customer service and has a track record. Ask questions to get your phone system set up quickly!

Types of VoIP Phone Services

Are you looking for a VoIP solution to your problem? These are the three most common options.


SIP trunking – You can move your PBX equipment to a cloud system without interruption. Your central telephone system provides advanced multi-line features and can connect you with people across town, around the world or next door -- all without additional equipment or service interruptions.


Business telephone service - You'll be able to take full advantage of all the features an international call provider can offer with this one package. It's also portable and scalable, and offers great calling rates no matter where you're located.


Call centre software - Having a cloud can increase its productivity. You can handle more calls, automate multichannel customer service, and offer self-service options. It's easy to set up SaaS solutions in the cloud. There's no need for desk phones - calls can be made using a VoIP app on your computer.

Common Questions About Fixed & Non Fixed VoIP Numbers:

Can you Call & Text Back the Nonfixed VoIP Number?

Yes, of course, you can text and call back the nonfixed VoIP numbers as much as they stay on the internet. 

How to Block Non fixed VoIP Number?

You Can block nonfixed VoIP calls & text messages as a regular blocking method, depending on phone service providers. The VoIP Shop provides multiple ways of blocking methods like marking as spam, blocking calls & text, and blocking all communications.

Can you Trace a Nonfixed VoIP Number and a Text Message?

It’s possible that we can trace nonfixed VoIP numbers, but it a very difficult, and the result is not much accurate. High authority people only can-do tracing nonfixed VoIP numbers if they feel criminal activities. 

Uses a non-fixed VoIP number?

Nonfixed VoIP numbers are mostly used for those who need international business calls, have more than two branches in different countries or areas, and have remote workers. Individuals using for cheap international calls purposes.

Which is a Better Choice for VoIP Users? Fixed & Non-Fixed VoIP Numbers?

Fixed VoIP numbers are suitable for those who need a more secure connection and fewer international calls. Non-fixed VoIP numbers are most suitable for businesses for cheap international calls. And utilizing advanced features like remote workers, auto attended, calls forwarding, IVR, etc.

Benefits of nonfixed VoIP numbers

  • Easy to get a virtual phone number by signing up with a mail id.
  • Don't need any physical address.
  • The cheap rate for international calls.
  • Comes with many features like Voicemail, auto attend, remote worker, etc.

Upgrade Your Business Communication with the UK's SIP Providers for Business! Unlock our Telecom experts' insider insights and find the perfect provider for your needs. 

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