Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
QoS by VoIP Under Use Different Audio Codecs
VoIP is currently the most widely used technology in telephony. Many providers now implement it in their IP-based networks. However, as flexible and powerful as the IP transport platform might be, it is nonetheless prone to packet loss. Network delay, out-of-order packet delivery and jitter are additional impairment parameters. As a result, Quality of Service (QoS) cannot be guaranteed in VoIP. What effects do network impairment parameters have on QoS in VoIP? What influence does the choice of audio codecs have? How can QoS in VoIP actually be measured in practice? What must a test environment look like if it is to produce reproducible measurement results of QoS in VoIP? What about security in VoIP? The work described in this paper aimed to find answers to these questions. The series of analyses was devised to show up the strengths and weaknesses of the audio codecs currently used in the VoIP service. The paper concludes with a summary and an outlook on further work.
QoS by VoIP Under Use Different Audio Codecs
VoIP is currently the most widely used technology in telephony. Many providers now implement it in their IP-based networks. However, as flexible and powerful as the IP transport platform might be, it is nonetheless prone to packet loss. Network delay, out-of-order packet delivery and jitter are additional impairment parameters. As a result, Quality of Service (QoS) cannot be guaranteed in VoIP. What effects do network impairment parameters have on QoS in VoIP? What influence does the choice of audio codecs have? How can QoS in VoIP actually be measured in practice? What must a test environment look like if it is to produce reproducible measurement results of QoS in VoIP? What about security in VoIP? The work described in this paper aimed to find answers to these questions. The series of analyses was devised to show up the strengths and weaknesses of the audio codecs currently used in the VoIP service. The paper concludes with a summary and an outlook on further work.
QoS by VoIP Under Use Different Audio Codecs
Uhl, Tadeus (Autor:in)
01.09.2018
812150 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Subjective Assessments of Low Bit Rate Audio Codecs
| British Library Conference Proceedings | 1995
| British Library Conference Proceedings | 2009
British Library Online Contents | 2010
| British Library Conference Proceedings | 2008
Quality-based Comparison of State-of-the-art Video Codecs
| British Library Conference Proceedings | 2003