Description: Call and Voice Measurement System
Part Number | Nomad HD |
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Category | Industrial Equipment |
Manufacturer | Spirent |
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The Nomad HD by Spirent is an advanced call and voice measurement system specifically designed to facilitate the evolution of the VoLTE (Voice over LTE) standard. This comprehensive solution enables the assessment of HD voice quality and call performance, ensuring that HD Voice and VoLTE services meet the required user experience standards. As network technologies continue to mature and evolve, it becomes necessary to adopt new methodologies for measuring and assuring quality, and the Nomad HD serves as a valuable tool in this regard. One of the key advantages of this system is its ability to consistently and objectively measure VoLTE voice services under real-world conditions. It simultaneously evaluates VoLTE voice quality and call performance, providing reliable insights.
The Nomad HD is compatible with all mobile devices and does not necessitate custom software installation on the device. Whether in a lab or field environment, this system is readily deployable and offers a user-friendly interface. It proves to be a cost-effective solution for assessing the user experience delivered by voice services. The Nomad HD incorporates POLQA (Perceptual Objective Listening Quality Analysis) mobile voice quality testing, which enhances the accuracy of quality predictions, enabling robust cross-technology quality benchmarking. It utilizes recordings made at an ear simulator and accounts for non-optimal presentation levels, contributing to more reliable results. Moreover, the system incorporates noise reduction, voice quality enhancement, filtering, and spectral shaping features, along with time-scaling, unified communication, and VoIP capabilities.
In terms of compatibility, the Nomad HD supports an expanded range of codecs, including G.729, G.711, Skype/SLIK, EVRC-WB, EVRC, and AMR-WB. It is optimized for architectures for an end-to-end network testing that is complex and employs advanced quality management techniques like time stretching and smart loss concealment. To cater to varying communication requirements, the system has super wide-band and narrowband communication scenarios. The Nomad HD also boasts significant advancements over its predecessor, PESQ (Perceptual Evaluation of Speech Quality). With a three-fold increase in the evaluation set, this system achieves residual prediction errors that are considerably smaller. Furthermore, it ensures seamless upgradability and maintains backward compatibility with PESQ, preserving the investment made in previous systems.
Certification | ITU-T P.863 Certified |
Bandwidth | 20 KHz |
Support | Bluetooth Hands-Free Profile v1.6 Support |
Bluetooth Codecs Compatibility | CVSD and mSBC |
Selectable Sample Rates | 8, 16, 32, and 48 KHz |
Sample Width | 24-bit |