Quality of Service in Heterogeneous Networks. 6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2009 and 3rd International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications, AAA-IDEA 2009, Las Palmas, Gran Canaria, November 23-25, 2009 Proceedings

Research Article

QoS Measurement-Based CAC for an IP Telephony System

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  • @INPROCEEDINGS{10.1007/978-3-642-10625-5_1,
        author={Jos\^{e} Salda\`{o}a and Jos\^{e} Aznar and Eduardo Viruete and Juli\^{a}n Fern\^{a}ndez-Navajas and Jos\^{e} Ruiz},
        title={QoS Measurement-Based CAC for an IP Telephony System},
        proceedings={Quality of Service in Heterogeneous Networks. 6th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2009 and 3rd International Workshop on Advanced Architectures and Algorithms for Internet Delivery and Applications, AAA-IDEA 2009, Las Palmas, Gran Canaria, November 23-25, 2009 Proceedings},
        proceedings_a={QSHINE},
        year={2012},
        month={10},
        keywords={IP Telephony VoIP CAC MBAC SIP virtualization QoS},
        doi={10.1007/978-3-642-10625-5_1}
    }
    
  • José Saldaña
    José Aznar
    Eduardo Viruete
    Julián Fernández-Navajas
    José Ruiz
    Year: 2012
    QoS Measurement-Based CAC for an IP Telephony System
    QSHINE
    Springer
    DOI: 10.1007/978-3-642-10625-5_1
José Saldaña1,*, José Aznar1,*, Eduardo Viruete1,*, Julián Fernández-Navajas1,*, José Ruiz1,*
  • 1: CPS Univ. Zaragoza
*Contact email: jsaldana@unizar.es, jiaznar@unizar.es, eviruete@unizar.es, navajas@unizar.es, jruiz@unizar.es

Abstract

This work presents a Call Admission Control (CAC) system for a SIP-based IP Telephony platform. Configured for a multi-branch enterprise environment, the system enables international calls to be established in two steps: one step using Voice over IP (VoIP) through the Internet between the local office and a VoIP-PSTN gateway placed at destination country, and a second step by means of PSTN, from the gateway to the end-user, accounted with local tariffs. CAC decisions are based on Quality of Service (QoS) measurements, call tariffs and also on the number of available lines in the gateway. The CAC has been implemented within a test platform based on virtualization. Measurements to evaluate and validate CAC’s impairment on call establishment delays have been obtained.