Issues associated with jitter will continue

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Jitter
Jitter is the variation in packet delay and often occurs when a network is congested or if there is not enough bandwidth to support the transit. Jitter can cause severe voice quality issues and sometimes even dropped calls. Common experiences include sounds cutting in and out as well as voice distortions.

to worsen as the israel telegram network becomes more congested. This means that, with enough congestion, voice packets can be completely missed or tossed out during transit. Losing part of a voice packet causes the audio to be distorted and sometimes even whole pieces of sound are completely lost.

Fragmentation
Fragmentation is one potential solution to this problem. If audio packets are attempting to be transferred in whole pieces, rather than several smaller bits, this will put unnecessary strain on the network and can potentially cause and exacerbate packet loss. When a caller’s voice sounds altered, that is because parts of the packet have been lost in transit. Implementing fragmentation allows these packets to be divided up into smaller pieces which puts less strain on the bandwidth, and helps data arrive at its intended destination. The audio packet is then reassembled before arriving at the endpoint. This entire process occurs within milliseconds and is one effective way of retaining audio quality.

What Can QoS Do For a Network?
Another point to consider is Quality of Service (QoS). QoS determines how data traffic is prioritized on a network. Since it is a realtime service, VoIP data needs to be prioritized above all other network traffic. For the best sound quality, you typically want audio packets to be able to move faster than anything else on a network.

For services such as email, downloading software, or web browsing, even differences of a few seconds will probably go unnoticed, but delays in real time services like VoIP calls are much more perceptible and can lead to all of those other problems with quality and connection. Prioritizing VoIP over other traffic, therefore, is a trade that sees benefits on the side of call quality, with tradeoffs on other network tasks that are likely to go unnoticed.

Issues with Network Capacity
If there isn’t enough bandwidth to handle the amount of packets that are being transferred, some of those packets may be dropped altogether. The general tolerance level of packet loss is 0.3 percent. If that threshold is exceeded consistently, even after implementing fragmentation and QoS, then there is simply not enough bandwidth to support VoIP calls along with all other network usage. If that is the case, it is recommended to increase the overall network capacity.