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Speech Quality Monitoring in Czech National Research Network

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Author(s): Miroslav Voznak | Filip Rezac | Jan Rozhon

Journal: Advances in Electrical and Electronic Engineering
ISSN 1804-3119

Volume: 8;
Issue: 5;
Start page: 114;
Date: 2010;
Original page

Keywords: QoS | R-factor | E-model | Speech quality | Monitoring.

ABSTRACT
This paper deals with techniques of measuring and assessment of the voice transmitted in IP networks and describes design of quality measurement, which can be used for Cisco Gateways. Cisco gateways send Calculated Planning Impairment Factor in every CDR (Call Detail Record). Our design is based on collection of CDR's, their storing into SQL database and their visualization through web page. This design was implemented and successfully tested in CESNET network.
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