Many enterprise networks have grown far beyond a single

large site to span tens to hundreds of branch offices across the globe, each

connected over VPNs or leased lines. With the emergence of the globallyconnected

enterprise and the trend towards enterprise all-IP convergence,

including transitioning the enterprise PBX to VoIP servers, IP-based audio/

video conferencing for telepresence has challenged the notion that

bandwidth is abundant in the enterprise. We take a first look at media

conferencing traffic in the global enterprise and, by instrumenting measurement

of call quality and network statistics, we quantify the impact

on call quality for a range of factors in the enterprise, such as wired vs.

wireless access, inter- vs. intra- branch office communication, QoS mechanisms

like VLAN tagging and DiffServ DSCP marking, and VPN vs.

public Internet access.

PDF file

In: Passive and Active Measurement Conference (PAM'2009)

Publisher: Springer Verlag
All copyrights reserved by Springer 2007.

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