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VoIP Service Providers Resource

VoIP Service Providers Resource brings you the latest and greatest information about this new emerging technology.

VoIP QoS

With all the good news surrounding VoIP, it's important to understand an important difference in VoIP QoS (Quality of Service) offered by providers. There may be many VoIP providers, but not all of them will be able to provide a level of service that will match your current phone service. Part of the problem is there are essentially a couple different approaches to VoIP QoS.

One approach is similar to a car navigating through rush hour traffic. There are lots of stops and starts and the vehicle never seems to arrive at its destination on time. In the world of VoIP, this traffic jam is caused by the voice packets associated with VoIP being routed around a variety of web traffic causing gaps between the time a message is spoken and when it is actually heard which can cause a great deal of frustration for those involved in the conversation.

Consumers usually talk over a public network where VoIP QoS is not guaranteed since there are too many variables over the many different networks that are outside the control of most service providers. Many businesses, however, have turned to private networks where there are more controls over VoIP QoS and thus higher quality voice transmission and reception can be attained.

The main components that need to be addressed by the business VoIP service provider for satisfactory VoIP QoS include throughput, availability, delay, delay variation and loss. Issues such as the bandwidth between two network points and the delays or loss of packets sent have to be accounted for and resolved in an optimal fashion in order for clear audio communications to occur.

Some of delay components of VoIP QoS include packetization delay, coder delay, serialization delay, WAN delay, dejitter delay and output queuing. Each of these delays must be address by the network engineering team in order to achieve satisfactory VoIP QoS from the customer perspective.

Another approach to Quality of Service (QoS) issues is to provide either resource reservation or a private network. The first issue is cost effective in infrequent usage. Resource Reservation Protocol (RSVP) allows ends systems to request VoIP QoS guarantees from a network. The second is the better long-term solution for businesses because it provides a system dedicated to handling voice traffic only. In either scenario, the result is a service that is very similar to existing phone systems with quality audio and response time.

VoIP has had a growing number of subscribers and the reasons are many. In fact, many phone service providers are looking at a move from landlines to VoIP as a means of retaining customers and eliminating aging infrastructure. As for VoIP QoS, issues, computer networks are not an exact science. Technicians need to continue to tweak the minor delays and explore new VoIP QoS methodology and systems in order to achieve the highest voice quality.

When visiting with a business VoIP provider, be sure to ask if the service is provided through DSL or a private network. The answer to this question will be crucial in determining if the end-result of your phone search will be a positive experience. The correct response will be private network since DSL latency is still too unpredictable for business VoIP. Also find out if the provider is peered with the largest IP networks such as Level 3, Savvis or UUNet. This will let you know if they are serious about VoIP QoS or a provider that thinks of quality as just an afterthought.




 

 

 
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