To ensure a smooth transition to VoIP technology, Winet offers a VoIP Readiness Assessment. Your network is analyzed, taking into account all relevant aspects, so that the subsequent VoIP implementation goes smoothly.
Simulated traffic and performance measurements show the data traffic increase through VoIP. Winet then gives recommendations on how your IT environment can be optimized before voxGate is used. This may be, for example, firewall adjustments, increasing the xDSL capacity, or replacing older active network components.
Call quality is dependent on the available bandwidth, the quality of the internal network and the quality of the internet connection. Your system administrator can significantly affect the quality through exclusively reserving bandwidth on your network router for telephone calls (Quality of Service, QoS). In smaller networks, such a configuration is usually not necessary.
Ultimately, the goal is that you can make calls without interruption with good voice quality and the parallel network traffic is not hindered - all data must be at the right time at the right place.
The VoIP Readiness Assessment gives you an important basis and planning security for the conversion to VoIP.
In the Winet VoIP Readiness Assessment, the quality of your network is analyzed. The testing process allows us to predict the speech quality that users experience to experience. The result documents the speech quality in MOS (Mean Opinion Score, ITU G.107), a defined standard for assessing the qualitative application sensation when calling.
Upon completion of the testing and analysis you will receive a report with your status quo and changes to make in your network architecture. With our seal your network is "VoIP ready" for the use of a VoIP solution.
Demands on the telecommunications
Winet takes your responsibility to customers very seriously and evaluates the quality of all calls in progress. By monitoring, all network parameters available are evaluated and graphically presented. These can be evaluated according to the protocols SIP RTP RTCP and SKINNY (SCCP).
The monitoring is designed depict the E-model of ITU (International Telecommunication Union) in a value, the so-called MOS - value.
The E-model is one of the International Telecommunications Union (ITU) G.107 standardized under analytical model for assessing voice quality in transmission systems. With this model, which is used in the planning and simulation of networks, the objective R-factor is a statement about the voice quality and is determined as a function of different transmission factors. The approach here used not considered a single, individual transmission parameter, but all the parameters that affect the transmission quality along with their interdependence. The noise signal-to-noise ratio, delay, jitter, latency, echo and packet loss are all variables influencing the voice quality and the two values.
The E-model is characterized in that it uses the parameters of the simulation directly as an input parameter for the prediction of the speech quality.
The Mean Opinion Score (MOS) is an objective evaluation standard for the transmission of speech. It provides the possibility to compare the quality of transmission of different language encodings to one another. The MOS-value is a dimensionless value between one and five, which is the voice quality; wherein the value "one" represents a poor voice quality in which no communication is possible, the value "five" on the other hand is an excellent transmission quality that is indistinguishable from the original.
The MOS value is in contrast to the objectively determined R-factor determined subjectively. In determining the MOS value, speech samples are play before volunteers, who determine the security rating. The ratings are weighted and from these the statistical results are determined. In ITU Recommendations P.830 and P.834 evaluation techniques have been refined. The most important quality criteria for the delivery of voice information are the delay times, bit error rates, echo and jitter. Because the ear is sensitive to sound fluctuations and language interruptions, the delay times should be approximately constant. The voice quality is not affected by the delay during transmission; it only deteriorates the call quality. Bit errors, however, have an effect of clicking noises.
Echoes can arise in analog systems at the transition from four-wire to two-wire technology and irritate the speaker by voice reflection, by which intelligibility suffers.