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VoIP Call Quality

VoIP Call Quality

Why does my internet connection work well, but my VoIP call quality is so poor?

How many times have you been on a VoIP call when all kinds of issues arise like jitter, echoes, choppiness?

You know, when things sound like this: “Hi, G-orge, I -telunch with–frey –day. -e were si- feet -part so -t was -k.

Why does this happen, you ask? Your internet connection is pretty good, and the bandwidth has always been adequate? You have no issues send and receiving emails and opening web pages?

What is the problem?

The key element to quality VoIP calls is often not bandwidth, which is generally in abundance these days, but latency which is a delay or lag. Latency occurs on data networks and during voice communications. It is the time between when a voice packet is transmitted, and the moment it reaches its destination. High latency causes jitter, choppiness and echoes, which is why latency is a big concern and it affects the VoIP call quality. Latency is measured in milliseconds (ms), which is thousandths of seconds. A latency of 20 ms is normal for VoIP calls; a latency of even 150 ms is barely noticeable and, therefore, acceptable. Any higher than that, however, and quality starts to diminish. At 300 ms or higher, latency becomes completely unacceptable, and above that, calls start dropping.

What are the causes of poor VoIP call quality, and how do we fix the problem?

1) The internet connection doesn’t have sufficient bandwidth
When an internet connection is slow and lacks adequate bandwidth, data packets take more time to reach their destination and often, the packets arrive in the wrong order, which makes reassembly impossible unless the order is restored. This causes quality to suffer.
2) The firewall is blocking traffic
Firewall checkpoints are always a bottleneck, so allow clearance for your VoIP application within the firewall settings.
3) The wrong codecs are being used
Codecs are programs used to encode voice signals into digital data for transmission over the network. Your provider may not be using the right one, and you can’t do anything about that, but if you use a VoIP application that allows you to change the codecs, this will help.
4) Old hardware is used
Old hardware with new software or new networks might not work well, and delay and latency are often a result. Use a different telephone device. Your data switch also might be the problem, and headsets may also cause latency.
5) The signal doesn’t convert correctly
If you are using analog to IP adapters, which may be the root of the issue.
6) Buffering is causing audio latency
Buffering occurs when audio data is being transferred and when there’s a difference between the time of transmission and reception and may be the culprit.

If you are experience problems with your VoIP calls, our team of experts can help you, call for a free assessment at 1-866-780-2022. You can also learn about the benefits of moving to VoIP on this blog

To find more ideas and tips on how to improve your communication system, connect with us on LinkedIn.

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