Internet-based platforms are the foundation for communications services of the future. As a leading provider of
DSP and embedded software solutions for IP-based communications equipment, Texas Instruments is in a unique position to provide key technology to enable service providers and equipment manufacturers the information and the mechanisms to effectively manage these IP services. This technology is provided by functional elements embedded in TI silicon and software solutions and is the foundation for TIís PIQUA initiative.
TIís PIQUA technology is a revolutionary new system of IP quality management that enables service providers and enterprise IT managers to deliver an unmatched level of quality to their consumer and business subscribers moving to Internet-based services, such as Voice over IP, Video over IP, IPTV and Internet-based music services.
- The improving VoIP and PSTN Qos
Voice traffic has unique requirements that affect QOS. The two main ones are very low delay and very low jitter.
Interactive voice conversations must have low delay - if the delay is too great they just stop being interactive. And that maximum delay seems to be about 150ms from ear to ear. Unfortunately, there are limits on what can be done in the network to reduce delay, and most network devices today are already capable of very low delay in forwarding.
Thatís what a lot of the underlying work on the infrastructure is there for,Ē says Nortelís Scheible. ďVariable delay, or jitter, in phone calls is bad. Thatís partly because it confuses echo-cancellation equipment. But jitter is removed from the call by a buffer whose size has to be set to the worst-case jitter, and that buffer adds to the end-to-end delay. If you increase the jitter buffer to 50ms, you have cut into the overall delay budget for the conversion.
- VoIP Development Symposium
Cable operators are increasingly looking to offer voice service (VoIP) in addition to video and data services as a strategy for wining subscribers from ILECs and keeping subscribers from defecting to satellite plus DSL offerings. However cable operators who make the decision to employ VoIP are often faced with a daunting learning curve. This is because VoIP introduces fundamentally new requirements.
VoIP introduces new traffic loads and traffic that is synchronous in nature, versus asynchronous like typical residential high speed data. VoIP also requires support for low delay and low packet loss. This is because VoIP is a streaming service where retransmission is not feasible. In addition VoIP requires high service availability. The level of availability depends on whether the VoIP service is intended to be a primary line service, available after a power outage or a secondary line service where service availability is not as critical.
- The Quality of Services Over IP
Getting Quality of Service working was not as complex as getting VoIP working but it took longer and was more difficult. There was more complex research work needed in this area than the other aspects of this project, in particular authorisation to use QoS. The bottom line is that AARNet implemented Quality of Service.
For the purposes of this project Quality of Service was about ensuring low delay and low jitter across IP, even under heavy utilisation.
The project also developed a new application which it called VoIP Monitor which monitors QoS. In the event of detecting a failure or degradation it triggers the VoIP network not to send any more VoIP calls to the destination having the problems.
Quality of Services News
VOIP QOS stands for Qualify of Service over IP and being able to achieve this is much easier than it once was. Although advancements have been made with VOIP QOS, in depth research is still needed, specifically in regards to authorization.
VOIP QOS focuses on the quality in which data and voice are sent over the Internet. Additionally VOIP QOS is about the assurance that low delay and Jitter over IP when it is being used heavily. This means that VOIP is given priority over other types of traffic and that when QOS is not at its peak performance, or not working altogether, the VOIP is stopped so that it does not travel over a faulty link.
- VoIP Module
Flow Control Platform
Voice over IP (VoIP) is becoming a significant part of the communications landscape, and companies need a better way to manage this performance-sensitive network application. With the Internap FCP VoIP Control ModuleTM (FCP-VCM) solution, VoIP QoS is within reach. By enhancing its award-winning Flow Control Platform (FCP) solution, Internap enables you to better measure and manage VoIP applications, because you gain the visibility into your network and can route appropriately; thus maintaining the Quality of Service (VoIP QoS) you are accustomed to with traditional phone service.
VoIP Enterprise Quality
In VoIP deployment, you can't hide design, performance, and quality issues. End users and management immediately know whether the VoIP system is working or not, so capacity and quality are necessities, not luxuries.
In the end, voice quality IS the ultimate benchmark. Solid design and performance engineering ensures the success of each phase in VoIP deployment:
* Design, Planning, and Sensitivity Analysis * Hardware Evaluation and Purchase
* Deployment and Verification * Monitoring and Management * Fault Isolation and Diagnosis
* Service Level Management * Capacity Planning