Cloud PBX Office Telephone – Understanding Internet Requirements

In general a cloud PBX office telephone system is a great business communication solution. It is able to deliver unimaginable levels of flexibility, tons of amazing features and above reduce overhead cost by as much as 50%. However businesses need to be aware that since it is a VoIP solution the main requirement is the internet, which today is a no brainer because almost everyone can secure a reliable connection. But still it pays if you are able to understand the exact requirements of VoIP solutions to maximize the technology.

Most articles on the web will say that a good internet connection is a must have for a cloud PBX officetelephone system to work properly. Well, that is true. However, it raises a question. What is considered good and what’s not? Below are some points to watch out for before deploying a cloud PBX officetelephone system or any other VoIP solutions.

Speed – Obviously a sufficient bandwidth is needed to run VoIP solutions, both download and upload speeds are equally important as phones work both ways. Depending on the audio codec built onto it, an IP phone may require 7kbps to 50 kbps. Not much, but remember it is a continuous stream, whilst on a call, so the internet speed you have should be able to accommodate all the requirements of your phone and your computer, if you will be sharing a network. Also some ISPs have bandwidth thresholds, which mean that you can only use a certain amount of data in a month. Be sure to also take this into account.

 Jitter – Is an undesired deviation during a data transmission, the higher the jitter the more likely voices will be delayed during a conversation. In a VoIP call, voices are converted to digital signals that are packetized. Think of as message envelopes, when you say the word Hello, The letter H and put to an envelope and sent, then the letter E and so on. The other party’s phone then transcribes these data into a form that we understand. Jitter causes these data to be delivered in an incorrect manner. For an instance in the word Hello the letter E comes first before the letter H. This is easily solved by IP phones with the use of jitter buffers because all data are sent with a sequence number. However, the more jitter your internet have, the more incorrect data are transmitted leading to delays.

Packet loss – Is the amount of data that are lost during the transmission. The average acceptable packet loss is below 2% because the network, server and other components of VoIP can still fill in the lost data, go higher then you will then start to notice that voices are breaking up.

Consistency of connection – Apart from speed, jitter and packet loss stability is also important. You don’t want an internet connection that goes from 1 megabit to 10 megabit and back to 1 megabit because it can affect the quality of calls.

If you are experiencing the above problems make sure to talk to your ISP because these are often cause by bad fiber connection. Have them check your lines and exchanges. Additionally it is advisable to secure a business grade plan because of the top level support priority and avoid contention because of overly subscribed home grade plans.