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Packet retransmissions, asymmetric routing, route modifications and other typical IP network experiences that are transparent to data applications can wreak havoc on real-time VoIP performance in some cases rendering the service unusable. Unlike static, circuit-based networks, the performance of dynamic, converged VoIP networks is highly unpredictable, varying widely from location to location and moment to moment. With VoIP, milliseconds matter, initial packet delivery is essential, and providers need to know whether they are meeting performance expectations before their customers tell them.

The only way to ensure the success of VoIP initiatives is through proactive service assurance and performance management. Proactive VoIP assurance enables service providers to understand, predict, and guarantee the performance of their services, while also providing tangible benefits, such as cutting operational and customer care costs, attracting and retaining satisfied customers, and decreasing the time to profitability for VoIP services. Most importantly, proactive VoIP assurance enables providers to compete on quality, not just on price.

Creanord Verified Delivers Complete VoIP Performance Analysis

We provide complete service testing across the three most vital areas that impact a user's experience of VoIP quality:

Signaling Quality

Signaling quality is a vital and important predictor of overall subscriber satisfaction, partially because it impacts on the user's first experience of the service - a delayed or absent dial tone and fast busy signals do not result in a good first impression. When customers pick up the phone to make a call, they expect that call to be established on the first attempt, quickly and reliably.

Otherwise, they hang up and providers won't even get the opportunity to demonstrate the superior voice quality of their service. Creanord Verified's signaling quality tests measure the performance of the entire signaling infrastructure by initiating and monitoring calls over selected protocols (e.g., H.323, SIP, etc.), and provide detailed measurements for each call setup step. To segment and troubleshoot a portion of the signaling infrastructure, the tests can also be configured to measure the performance of individual components, such as call management servers, gateways, or proxy servers.

Delivery Quality

When poor quality has been identified, the questions which arise are "What is the problem?" and "How do we fix it?" Troubleshooters need a comprehensive set of diagnostics and tools to precisely define both the location and cause of performance problems, regardless of where the problem occurred. Creanord Verified's delivery quality tests measure media network performance to provide just these types of diagnostics, including one-way latency, jitter, loss, and more. In addition, Creanord Verified delivery quality tests provide media route analysis technology to help operators identify the precise network paths traveled by their VoIP calls. The service allows operators to correlate route length with call performance, compare optimal to actual route, or identify the slowest hops in a call route.

Call Quality

Once a call is established, voice and conversational quality are essential. Both customers and network operators alike want to know "How good is this call?" Creanord Verified tests deliver a simple answer to this simple question in the form of a Mean Opinion Score (MOS), a single metric that enables the rapid assessment of overall call quality.

As a measure of call quality, MOS has been around for a long time. Historically, panels of human testers subjectively measured quality by listening to and ranking calls on a scale of one (bad) to five (excellent). The average panel score represented the "mean opinion." Today, SLAvision uses objective models like the E-Model, PESQ, and other emerging industry standards to measure call quality. Only by monitoring and measuring each of the three most important quality components- signaling, delivery, and call quality-can providers understand, predict, and guarantee the quality of their VoIP services. And only Creanord Verified offers that capability