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If you are using a VoIP phone system, there is a good chance you have experienced poor call quality. This article discusses the causes of VoIP call quality problems and what you can do to correct them.


The causes of poor quality VoIP calls are easy to diagnose and correct. Your VoIP Service Provider should be able to identify and work with you to correct these problems. More importantly, these problems should not be ongoing. If your VoIP Service Provider is unable to correct your call quality problems, you need to find a different provider.


5 Most Likely Causes of Poor VoIP Calls and How You Can Fix Them:


1. The Problem: Jitter


Jitter is a common problem of the connectionless networks or packet switched networks. Because the information (voice packets) is divided into packets Sebastian Rode Jersey , each packet can travel by a different path from the sender to the receiver. When packets arrive at their intended destination in a different order then they were originally sent, the result is a call with poor or scrambled audio.


Jitter is technically the measure of the variability over time of the latency across a network. Jitter is one of the most common VoIP call quality problems.


The Solution: Use Jitter Buffers


A jitter buffer temporarily stores arriving packets in order to minimize delay variations. If packets arrive too late then they are discarded.


2. The Problem: Latency


VoIP delay or latency is characterized as the amount of time it takes for speech to exit the speaker鈥檚 mouth and reach the listener鈥檚 ear. Latency sounds like an echo.


There are 3 types of delay commonly found in today鈥檚 VoIP networks;


1. Propagation Delay: Light travels through a vacuum at a speed of 186,000 miles per second, and electrons travel through copper or fiber at approximately 125 Roman Weidenfeller Jersey , 000 miles per second. A fiber network stretching halfway around the world (13, 000 miles) induces a one-way delay of about 70 milliseconds (70 ms). Although this delay is almost imperceptible to the human ear, propagation delays in conjunction with handling delays can cause noticeable speech degradation.


2. Handling Delay: Devices that forward the frame through the network cause handling delay. Handling delays can impact traditional phone networks, but these delays are a larger issue in packetized environments.


3. Queuing Delay: When packets are held in a queue because of congestion on an outbound interface Roman Burki Jersey , the result is queuing delay. Queuing delay occurs when more packets are sent out than the interface can handle at a given interval.


The Solution: Prioritize


Prioritizing VoIP traffic over the network yields latency and jitter improvements. Policy based network management, bandwidth reservation, Type of Service, Class of Service Raphael Guerreiro Jersey , and Multi-Protocol Label Switching (MPLS) are all widely used techniques for prioritizing VoIP traffic. A quality VoIP router can solve many of these issues and will result in business quality Hosted VoIP PBX phone service.


3. The Problem: Poor Internet Connection


Most ISP鈥檚 are designed for web surfing and not VoIP advantages. Transporting voice packets is different and requires an additional set of internet protocols that your ISP may not be providing.


The Solution: Business Class High Speed


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