No business can thrive without effective communication, and as digital transformation continues to accelerate, we’re all looking for ways to become more efficient and agile. 

So, if you want to enhance collaboration, keep your customers happy and make the lives of you and your employees a little easier (wouldn’t that be nice?), you’ll need to streamline your business capabilities.  

Let’s discuss your options… 

PBX versus VoIP

In the past, you simply picked a traditional landline phone. Now, with all the savvy alternatives, the situation is a bit more complicated. The decision usually boils down to choosing between a private branch exchange (PBX) or a voice over internet protocol (VoIP) network.  

Although the speed and quality of both networks are pretty similar, there are some differences between them. We see you on the edge of your seat, so let’s fill you in…  


Traditional PBX systems have been around for decades. In fact, at one point, they were the most sophisticated option on the market, with features like dial tone, extension dialling, call forwarding, and hold music turning the heads of many companies. 

The system is connected to a local public switched telephone network (PTSN) through a landline and typically requires a full-time IT technician to maintain the physical hardware.  

Since the hardware has to be located on-site, it doesn’t allow for much flexibility and the setup can get costly. As well as paying upfront for a system power supply, routers, compatible phone sets and headsets, you’ll also have to factor installation costs into your budget.  

Plus, if your business grows, scalability can be tricky. You’ll need to add hardware and equipment, and based on your area, lines may be too limited for expansion. 

PBX systems are good for reliability, though, as they’re not likely to go down (which could end up costing you a lot of money). Its reliability makes the system popular for emergency services or any organisation that needs to be accessible 24/7 — even in rural areas.  


VoIP was invented as an improvement to previous systems, so it’s no surprise there are fewer problem areas. 

With VoIP, all you need is a high-speed internet connection and you’re pretty much good to go. The internet-hosted nature of VoIP does mean there’s a risk of system hacking, but you can take precautions to secure your systems. 

Your provider can conduct any maintenance and upgrades to the system remotely, and you can use the network to connect multiple locations, so employees can work collaboratively no matter where they are. 

As your business expands, you can also add more users to or upgrade your plan easily, utilising various features like instant messaging, video conferencing and call transfers to create simple communication amongst your team. Or voicemail and call waiting features are handy if lots of customers are trying to reach you during business hours. 

It’s fair to say that if you want to cut costs, improve employee productivity, enhance the customer experience, build resilience or create capacity for continuous transformation, you need to streamline your business capabilities with a VoIP network.  

 Keep things simple with Invosys Number Manager

Want to update your current phone system without the expense or hassle of fitting any new hardware?  

We’ve fused cutting-edge telephony technology with Invosys Number Manager, allowing you to upgrade to advanced VoIP features without replacing your existing PBX system or handsets.  

Number Manager is the ultimate call management platform, accessible via a user-friendly portal. It provides access to a full suite of sophisticated telephony solutions with dozens of different functionalities — from multi-device operation, voicemail and secure call recording to ‘out-of-hours’ settings, instant disaster recovery and various automation options. 

Plus, Number Manager can work seamlessly with various other Invosys solutions — further expanding the capabilities offered by on-premises PBX solutions. 

Our Direct Routing with MS Teams service uses Number Manager as its telephony base (hello, seamless Teams calls…) and Invosys Flow, our unified communications as a service (UCaaS) solution, integrates your calendar with Google and Microsoft platforms to ensure your presence and availability is always up to date. 

Totally scalable, Number Manager allows your communications systems to grow with your business. And when you upgrade to our session initiation protocol (SIP) telephony solution, you can maintain your local presence without needing to be physically located in a particular area. Cool, right? 

Thanks to Invosys Enterprise, building call plans is also even easier, giving you more flexibility to route your calls with all the effective features of Number Manager thrown in.  

Number Manager provides a streamlined call experience from start to finish. And if you ever need it, you can always count on our 24/7 technical support team to help. 

Interested in joining the thousands of Number Manager users upgrading their business telephone systems? We thought so. Request a free demo or get in touch with us at today.