How to detect Network Overload

Recently we spoke about increasing voice traffic due to Corona and mentioned the network overload indicator. This has led to inquiries, which we are happy to answer this time.

It is important to measure jitter of voice traffic – excessive jitter cannot be compensated for by the receiver and causes gaps in the audio. But what is the reason for a specific jitter event and how do you prevent jitter from happening?

One common source of jitter in the network is buffering. Overloaded network elements like routers and SBCs may be too busy to forward packets in time and start queueing up packets. This creates a very unique pattern in the packet delays of affected RTP streams.

The pattern is automatically detected by Qrystal and flagged by the Network Overload indicator.

The recent increase in call volume due to the Corona crisis underlines the importance of this indicator. Most subscribers won’t notice yet, but the rising traffic is pushing some networks to their limit and eventually the user experience will suffer. Qrystal’s Network Overload indicator will give you the extra time needed to identify bottlenecks and increase network capacity.

More? Just drop me an email.

Stay sane, Carsten