Case Studies

Improving VoIP Conference Quality

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www.radisys.com C U S T O M E R S T O R Y I N D U S T RY/M A R K E T: Audio Conferencing Services T H E C H A L L E N G E: Improve the audio quality for business conferencing calls with as many as 1000 participants. T H E B U S I N E S S E N V I RO N M E N T: As service providers transition to Voice over IP (VoIP), it's necessary to ensure quality is on par with the Public Switched Telephone Network (PSTN). T H E S O L U T I O N: The service provider deployed the Radisys voice quality enhancement (VQE) software, which improved audio quality and generated objective measurements for administering service level agreements (SLAs). T H E B E N E FI T S: The VQE software ran on a Radisys Convedia CMS–9000 media server, thereby minimizing end-to-end call path delay and saving the cost associated with a separate network element. C U S T O M E R P RO FI L E: The service provider delivers IP-based communications services, including conferencing and local/long distancing calling, to businesses and consumers. No longer a niche technology, Voice over Internet Protocol (VoIP) is gaining traction among major carriers and service providers offering audio conferencing services. The industry is in the process of transitioning from circuit-switched to packet-switched networks in order to lower cost and ease the development of new features. The cost per line in a VoIP network is about one-fifth the cost of circuit-switched, and VoIP technology simplifies the integration of new features, like adding a supervisor recording function to the conference. While VoIP networks provide significant economic benefits and enable powerful conferencing capabilities, they also present new technical challenges in maintaining acceptable voice quality. Delivering good voice quality is an important requirement in any VoIP conferencing system, as poor voice quality can lead to customer churn and negatively impact growth prospects. Consequently, it's essential to address the three most common sources of audio quality problems in a network: audio noise, packet loss and echo. Improving VoIP Conference Quality

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