Analysis of the Impact of IPSec on performance characteristics of VoIP networks and voice quality

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F15%3A00531273" target="_blank" >RIV/60162694:G43__/15:00531273 - isvavai.cz</a>

Výsledek na webu

<a href="http://vavtest.unob.cz/registr" target="_blank" >http://vavtest.unob.cz/registr</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of the Impact of IPSec on performance characteristics of VoIP networks and voice quality

Popis výsledku v původním jazyce

Providing secure communication has become an essential requirement for VoIP networks. To meet this requirement in a VoIP environment is more complex than in conventional data networks due to the implementation of real-time applications. Network traffic can be encrypted by many solutions. One of them is a widely used and standardized IPSec. During the experiments we have consequently tested the impact of the IPSec encryption on the router CPU utilization, bandwidth required and voice quality. All of these parameters are functions of the number of performed calls. Setting the appropriate Voice Payload Period (VPP) can change the number of simultaneously transmitted and processed packets. The tests were carried out on Integrated Services Cisco 2811 routers that are suitable for small companies. Measurements were carried out for two types of codecs. The outcomes proved a significant effect of VPP on the CPU utilization and also on bandwidth. If the VPP is chosen properly, up to 40 to 60 % of bandwidth can be saved. The call quality, expressed by MOS scales, remains almost constant up to the moment when the utilization is close to 80 %.

Název v anglickém jazyce

Analysis of the Impact of IPSec on performance characteristics of VoIP networks and voice quality

Popis výsledku anglicky

Providing secure communication has become an essential requirement for VoIP networks. To meet this requirement in a VoIP environment is more complex than in conventional data networks due to the implementation of real-time applications. Network traffic can be encrypted by many solutions. One of them is a widely used and standardized IPSec. During the experiments we have consequently tested the impact of the IPSec encryption on the router CPU utilization, bandwidth required and voice quality. All of these parameters are functions of the number of performed calls. Setting the appropriate Voice Payload Period (VPP) can change the number of simultaneously transmitted and processed packets. The tests were carried out on Integrated Services Cisco 2811 routers that are suitable for small companies. Measurements were carried out for two types of codecs. The outcomes proved a significant effect of VPP on the CPU utilization and also on bandwidth. If the VPP is chosen properly, up to 40 to 60 % of bandwidth can be saved. The call quality, expressed by MOS scales, remains almost constant up to the moment when the utilization is close to 80 %.

Druh

D - Stať ve sborníku

CEP obor

KA - Vojenství

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

International Conference on Military Technologies 2015

ISBN

978-80-7231-976-3

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

375-379

Název nakladatele

University of Defence

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

—

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—