QoS IP Phone Systems Essential Details

By David Patterson


IP phones use voice over IP technologies to place and transmit phone calls on an internet protocol network instead on the PTSN or public switch telephone networks. Common functionality and features include call hold, conference and transfer as well as caller ID. Though there are issues with this technology including the need of internet access and depending on mains electricity.

Another issue is that because they access the internet, the quality of the voice call suffers when other applications are accessing and using the network. This is the reason why QOS IP phone systems are important in managing the data traffic. QOS or quality of service is the collection of concepts and techniques to provide optimal call quality.

This is a service that arranges particular traffic by slowing data packets down with lesser importance for the important one to arrive at their destination faster. Routers usually use a First In, First Out or FIFO method when sending data but it can be changed with QOS tagging. Changing it would give priority to certain traffic and move them up the queue.

The queues hold containers of packets for network devices whenever they have low priority and cannot be immediately sent. There are different methods and levels in prioritizing these tags and are dependent on the router. Some samples of these levels include high, medium and low. Tagging is possible by using Ethernet ports of the router.

The router used for QoS implementation must be placed within the LAN as a gateway device after DSL or cable modems. This could reduce your experience of choppy voices from happening during conversations because of other apps grabbing the needed bandwidth. These apps include gaming, email and other applications that uses high bandwidth.

This will not affect the performance of your ISP because they are already limiting your speed in downloading and uploading related on the degree of service you acquired. You should know these limitations and do a speed test measurement then compare it what the ISP has told you. If you do not receive at least eighty percent of the limit cap then troubleshoot this issue with their tech support.

Before putting QoS settings on your router, these steps must be done first if you are experiencing choppy voices. Try to talk using the IP phone without the other competing phones or computers and check if there is still a problem. Check the computers on LAN if they are clean of spyware programs by using a protection software to check them.

You should put the settings one by one and check if they work and achieve the wanted results each time. The simple ones must be added first and add the others after checking them one by one dependent on how advanced they are. Experiment with which settings to use until you can achieve the desired results.

Your networking equipment can also affect the voice quality and is critical in have a good phone conversation. This is not a big problem in companies that have fewer employees because the active users are fewer and lesser simultaneous use of network. While in bigger companies with more employees will have many active users specially if on a computer that are transmitting all kinds of data simultaneously.




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