Temat: transmission quality - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Performance Analysis of VoIP Data over IP Networks
Autorzy:: Strzęciwilk, Dariusz
Powiązania:: https://bibliotekanauki.pl/articles/2055215.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: MOS
VoIP
RTCP
QoS
audio codecs
transmission quality
Opis:: The paper presents the results of research and analysis of voice data transmission quality in IP packet networks. It analyses mechanisms allowing for the assessment of packet telephony data transmission quality. Possible transmission quality levels and adequate quality metrics, applicable in the recommendations of standardisation organisations, as well as suggested limit values conditioning acceptable voice data transmission quality were indicated and discussed. A packet network model was designed and tested, taking into account VoIP architecture supporting various audio codecs used for voice compression. Transmission mechanisms based on audio codecs G.711, G.723, G.726, G.728 and G.729 were investigated. It was shown that for delay-sensitive traffic which fluctuates beyond its nominal rate, selected codecs have an advantage over others and allow for better transmission quality of VoIP traffic with guaranteed bandwidth and delay.
Źródło:: International Journal of Electronics and Telecommunications; 2021, 67, 4; 743--750
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Examination of Transmission Quality in the IP Multi-Protocol Label Switching Corporate Networks
Autorzy:: Strzęciwilk, D.
Powiązania:: https://bibliotekanauki.pl/articles/227144.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: P/MPLS network
DiffServ architecture
VoIP
transmission quality
quality of service
Opis:: The paper presents the examination of quality of transmission designed and built based on IP/MPLS technology as well as BGP and OSPF routing protocols of corporate network. It indicates the factors forming and affecting the service quality in IP network, including QoS support network architecture, particularly the architecture of DiffServ differentiated services. Main problems occurring in these architectures have been discussed. The analysis of data and voice transmission via IP network of Best Effort architecture and in Differentiated Service architecture of differentiated transmission quality have been conducted. It has been presented that the MPLS technology may be effectively applied in building corporate networks requiring network services of highest quality parameters with lossless packet transmission and maximum delay guarantee.
Źródło:: International Journal of Electronics and Telecommunications; 2012, 58, 3; 267-272
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

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