IP Networking and MediaCom 2004

1

Study Group 12 andITU QoS Coordination Dr.
Charles (Chuck) DvorakSG12 Vice-Chairman
IP Networking and MediaCom 2004
2

Where are the worlds QOS experts? A primary
core competence of the ITU-T is the substantial
expertise that it has across several Study Groups
in the areas of QOS and Performance. The experts
who work in the ITU-T do related work in regional
SDOs (for example, ETSI, T1, TTC), but
nowhere else does this same level of expertise
reside.
IP Networking and MediaCom 2004
3

SG12 Area of Responsibility End-to-end
transmission performance ofnetworks, terminals
and their interactions,in relation to the
perceived quality and acceptance by users of
text, speech, and image applications including
the relatedtransmission implications of all
networks (PDH, SDH, ATM and IP) and terminals.
IP Networking and MediaCom 2004
4

IP and Multimedia in SG12 Q.2- Transm.
Requirements for IP gateways and terminals Q.8-
E-Model (planning tool for speech quality incl.
VoIP) Q.11- Transmission of multiple
interconnected networks Q.12- Voiceband services
transmission via IP networks Q.13- Multimedia QOS
and performance requirements Q.14- Effects of
interworking multiple IP domains on VoIP Q.15-
QOS coordination in the ITU (Lead Study Group
work) Q.16- In-service non-intrusive assessment
of VoIP
IP Networking and MediaCom 2004
5

Examples of new SG12 work
G.17x Transmission of Voiceband Services Over IP
Flows G.IPP Transmission Performance Parameters
Of IP Networks Affecting Speech Quality And
Other Voiceband Services G.QoSRQT Multimedia QoS
Requirements G.VoIP-Islands Trans. Plan. for
interconnected IP-based networks supporting VoIP
services G.VBS-Islands Trans. Plan. for
interconnected IP-based networks supporting
PSTN-type speech and voiceband data
services P.VOIP Speech requirements and
measurements for IP terminals P.GTWY Speech
requirements and measurements for Gateways
IP Networking and MediaCom 2004
6

Scope of Question 2/12
IP Networking and MediaCom 2004
7

Scope of Question 14/12
IP Networking and MediaCom 2004
8

SG12 as the QOS Lead SG Internal to the ITU-T,
provide a roadmap for QOS activities that can be
used to identify,communicate and resolve
QoS-related issues. External to the ITU-T,
improve the visibilityand utilisation of ITU-T
expertise in QoS, andbetter leverage this
expertise in specificationsbeing developed
elsewhere in the industry.
IP Networking and MediaCom 2004
9

One example of an industry-wide issue End-end
performance and allocation of objectives can be
done for an end-to-end architecture like that of
the PSTN. But the Internet is not an end-to-end
network, but a set of protocols that work across
domains. How to do effective performance planning?
IP Networking and MediaCom 2004