At first glance, the difference between 99.9% (often referred to as ‘3 9s‘) and 99.999% (‘5 9s‘) may appear minor, but in reality, it holds far-reaching consequences that could profoundly impact your business.

When it comes to your business operations and your cloud provider, you want to make sure you are picking a VoIP phone service that provides you with a five 9’s guarantee. Leaving nothing to chance when it comes to unwanted downtime.  

But what does the difference between five 9s and three 9s really mean? And how is it measured? To understand this we must first look at the definition of high availability.

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What is High Availability?

High availability for businesses refers to how often a system or service remains operational and accessible. This is often measured as a percentage of time it is up and running throughout the year. 

The relationship between availability percentage and downtime is like a translation – it shows how much time the system might be unavailable based on the given availability percentage.

Although three 9’s might seem like a solid guarantee, the absence of all five nines could potentially expose your business to the peril of numerous hours of unforeseen downtime over the course of the year. 

Keep reading to delve into the numerical intricacies and examine the profound impact that these supplementary nines can bring about when it comes to VoIP phone service operation. 

99.9% (Three 9s)

Yearly Downtime: 8.77 hours
Monthly Downtime: 43.83 minutes
Weekly Downtime: 10.08 minutes
Daily Downtime: 2.19 minutes
Hourly Downtime: 1.44 minutes

99.999% (Five 9s)

Yearly Downtime: 5.26 minutes
Monthly Downtime: 26.30 seconds
Weekly Downtime: 6.05 seconds
Daily Downtime: 1.31 minutes
Hourly Downtime: 864.00 milliseconds

The Difference of 2 More 9s

As you can see, the difference between three 9s and five 9s is significant. While most VoIP phone services in Florida offer a three 9s guarantee, we take it a step further with a 99.999% uptime guarantee that almost completely eliminates downtime so you can stay connected with your clients and save money-making hours that would otherwise be lost during downtime. 

At CPT of South Florida, we are proud to offer VoIP phone services in Weston, Delray Beach, Miami, Miramar, Coral Gables, Fort Lauderdale, and the surroundings. As the preferred cloud provider in the area, our five 9s solutions help you maintain optimal business operations so you do not end up wasting time and money on downtime. Contact us today by calling 954-963-2775 to learn more about our VoIP phone service for Weston, Delray Beach, Miami, Miramar, Coral Gables, Fort Lauderdale, and the surroundings! 

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Customer Reviews

CPT of South Florida

Customer Reviews

John C

CPT installed a new Avaya IP phone system for my office. The transfer to the new system was seamless. The installers were very professional. We are very happy with our new system and CPT.

Scott Meyer

CPT of South Florida just upgraded all of our offices Avaya systems to the newest software versions. The tech was knowledgeable and very thorough when reviewing all of our system features and programming. This is a great group to work with.

Mario Bacelar

Positive: Professionalism, Quality, Responsiveness, Value

Attention to their customers and they go beyond the line of duty with high hopes and capability for solutions.

Definitely Recommend.


Our business switched from one large VOIP provider to GoToConnect recommended by CPT of South Florida. Although we had a significant pricing decrease, the biggest benefits were in a much more user friendly and powerful phone system.

1st Performance Marina

Positive: Professionalism, Quality, Responsiveness, Value

Great, Professional Service!!

Amaro Hesen

Positive: Professionalism, Quality, Responsiveness, Value

Fantastic company - Highly Recommended!
CPT of South Florida are professional and knowledgeable in all aspects of the tech needs for businesses.

Lee Dubey

Positive: Professionalism, Quality, Responsiveness, Value

CPT has been a great partner for many years. We can always depend on their expertise and recommendations. They have solved complicated network issues with top notch techs. They also recommended and guided us through the installation of the logmein/Jive phone system that turned out to be a great decision and CPT was a big part of the projects success..

Ilene Fostoff

2 years ago I replaced my phone system. It was a very difficult situation due to the nature of my business. CPT did a good job. There were some hiccups as there are in anything you do of this magnitude and CPT rectified them. There support in the last 2 years has been very good.

Scott Bonora 24/1/19

Barrett and his team did a great job throughout the whole process of installing a new phone system. We went with the Avaya phone system and we are very happy with it.

Rene Villa 24/1/19

They provide high quality post implementation services. CPT support team remains engaged until my requests are fulfilled. Thank you!