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.

The service arranges specific traffic by slowing down lesser important data packets so that the important ones reach the destination quicker. Routers are using the FIFO method to send data though this may be changed through QoS tagging. This will give priority by changing it over to specific traffic and they will be moved up the queue.

Queues are holding containers of packets of data for network devices if they cannot be sent immediately and with low priority. These tags are being prioritized using different methods with different levels dependent upon the router. Some examples of the levels are low, medium or high. Tagging could be done by the use of Ethernet ports of routers.

That router used for implementing QoS must be placed inside the LAN as the gateway device after the cable and DSL modem. The experience in having choppy voices while on a conversation, which happens when other applications grab the needed bandwidth, could be reduced by this. These applications are other high bandwidth ones like email and gaming.

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.

Do these first before putting the QoS settings on a router when you are still experiencing choppy voices. First step is try talking on the IP phone and without competing computer and phones then check if the same problem is there still. Check all the computers connected to the LAN if they do not have any spyware program by checking with some protection software.

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 network equipment could also affect voice quality and they are critical in having good phone conversations. Companies with fewer employees are not that worried with these because they have fewer users and simultaneous use of the network is lesser. While bigger companies have more users with more simultaneous use of the network.




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