1. Workshop on scalable QoS, Annapolis
TF-NGN, Southampton
April 18th, 2002
Victor Reijs
Scalable QoS report at TF-NGN 1

2. Why no real QoS services
Operational management is difficult
Complexity
Signaling not present for inter-domain
No real market pull
Keep it simple principle is missing
Scalable QoS report at TF-NGN 2

3. Scalable QoS report at TF-NGN
QoS provisioning
Somewhere between % load
Incidents in overprovisioned network
routing, outage, DOS attacks
At the comparable low speed access side
Trough end systems (like TCP)
network signals when almost in trouble (ECN)
Scalable QoS report at TF-NGN 3

4. Scalable QoS report at TF-NGN
Metric of QoS
OWD, ipdv, PLR, Consecutive loss, AB, etc
Availability/reliability at short time frame
minutes rather than months
Reachability
Scalable QoS report at TF-NGN 4

5. Scalable QoS report at TF-NGN
Open issues
Measure before implementing QoS
Make application work on Internet
Genuity provides multiple reporting
New VoIP-codec less depending on PLR
like MDC: Multiple Description Coding
PRT
Performance Response Team
Scalable QoS report at TF-NGN 5