Complete Guide to VoIP

VoIP (Voice Over IP) is also called Voice over Internet Protocol (IP). It simply means sending voice calls over the Internet as opposed to traditional telephone lines. For the user, it feels exactly the same as making a conventional call. VoIP functions much like any other data you send over the internet (such as instant messages or e-mail). It converts voice communication into data packets and sends it over an IP network. VoIP makes it unnecessary to have a traditional phone line installed in your business or residence, since you can make calls using your internet connection.

That’s the short answer, but obviously there’s a lot more that goes into a VoIP system that makes it an ideal solution for personal and business use.

One of the main benefits to using a VoIP system for your communications is that it cuts down on the number of providers and solutions you need. Rather than having a separate phone company and internet company, VoIP makes it possible to combine your voice and internet communications into the same service. It’s also much easier than traditional voice communications to scale for growth or add new features that essential to your business needs. Since VoIP runs over an IP network, all of your data is stored in the cloud and settings are accessible through a universal online dashboard or application. This dashboard allows users to access their data (contacts, phone numbers, client information), setup new call settings, and add new phone numbers, whether you’re traveling or in the office.

How Does VoIP Work for Business?

In the diagram below, you’ll notice there’s no mention of Hosted PBX or any other kind of PBX (Private Branch Exchange) based system. That’s because in this scenario, VoIP runs across your business LAN (Local Area Network) and is sent to the servers owned by SPOC Managed Services.

VoIP Phone System Diagram

The process starts with your devices, as illustrated in the diagram. These SIP-enabled devices are used to make calls over the VoIP network. From there, your VoIP system can connect to either SIP or PSTN (Public Switched Telephone Network) enabled devices. But first, it needs to travel through the router connected to your business LAN network. The router plays a huge part in how you receive and make calls. With an analogue phone system, your phone is plugged into a hardwired copper line and likely funnelled through a server located in your office. VoIP is different than landlines because it doesn’t use phone lines at all. Instead, it uses an internet connection which connects via a router–allonsite. Pretty much everything from there happens in the cloud. This negates the need for building an on-site server closet or other expensive infrastructure.

The router connects to whatever internet solution you have in place and accesses the IP network provided by SPOC Managed Services. From there, your VoIP solution can begin accessing any number of devices and utilizing them for communications. The amazing thing about how VoIP works are the flexibility you have to use nearly any device you want. Whether you’re using a softphone (software that allows you to turn tablets, computers, and mobile devices into a phone) on your computer or forwarding your calls to your cell phone via the online dashboard or app. You can access your phone line from any device anywhere in the world.

VoIP’s ability to give users remote access to their office line is one of the many reasons its popularity is soaring. With so many companies converting to non-traditional work schedules and the popularity of remote travel, this is the first time users are able to stay connected with ease to in-office communication.


If your organization chooses to maintain an on-premise PBX, SIP (Session Initiated Protocol) Trunks acts as the direct line to your VoIP service provider instead of running on the same internet connection as the rest of your business data.

SIP Trunking and VoIP

In most cases, SIP trunking allows all voice communication to travel over a dedicated line. A dedicated line means that only your voice data would run across it, saving your main LAN network for other workflow uses like email, instant messaging, file uploading and downloading. You’ll see in the diagram that, similar to the VoIP scenario, SIP trunks gather information from the PSTN at the service provider location. It is funnelled in much the same way until it reaches the business location and is hardwired into a server (likely where PBX is set-up). Like old school analogue circuit-switches, the “trunk” in SIP Trunking acts as a switch that helps to control and funnel data. SIP Trunking allows you to combine old analog phone systems and new VoIP solutions to eliminate redundancy.

What can you expect once your VoIP system is up and running?

First off, you can expect to save money.

Once you have a VoIP system up and running, the benefits to your business are undeniable. The savings alone are reason enough to make the switch. Businesses have already saved themselves up to 60% a month by switching over to VoIP.


Phone Features
In addition to some serious cost savings, numerous phone features are another huge reason so many companies are switching to VoIP. Spoc Managed Services offer a host of popular features on our VoIP telephony system that can help with productivity and business growth. A few of the features include:

Call Forwarding

Call forwarding allows users to forward phone numbers to any device.

Call Parking

It gives the user the ability to place a call on hold, move to another location, and pick the call back up on another phone or device.

Voicemail to Email Messaging

This is a transcription service that listens to your voicemail, transcribes it and then sends it directly to your email.

Auto Attendant

It’s an automated message that greets callers and offers them an options menu. If you run a company with various departments, it makes it easier for your customers to access the right person.

A VoIP Provider

Partnering with the right provider will ensure not only a flawless setup but, with a provider like SPOC Managed Services, you are guaranteed a customer service team that is passionate about delivering solutions that best fit your business. The reason so many businesses choose SPOC Managed Services is because of our easily scalable solutions, low-cost business phone service, and impressive cloud-based Unified Communications platform.

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Telephone: +27 12 643 9940
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Centurion, Gauteng

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