Chapter 7. Routing Speed
Published Online: 18 APR 2002
DOI: 10.1002/0470845910.ch7
Copyright © 2001 John Wiley & Sons, Ltd
Book Title
QoS: Measurement and Evaluation of Telecommunications Quality of Service
Additional Information
How to Cite
Hardy, W. C. (2002) Routing Speed, in QoS: Measurement and Evaluation of Telecommunications Quality of Service, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/0470845910.ch7
Publication History
- Published Online: 18 APR 2002
- Published Print: 1 JUN 2001
ISBN Information
Print ISBN: 9780471499572
Online ISBN: 9780470845912
- Summary
- Chapter
Keywords:
- call set-up time;
- cut-through;
- direct access line;
- direct end office termination;
- handling time;
- in-band;
- jitter;
- jitter buffer;
- numbering plan;
- packet latency;
- PBX;
- PDD;
- post-dial delay;
- out-of-band;
- overlap outpulsing;
- ring-back;
- routing speed;
- signaling;
- senderized;
- tandem switch;
- test progress tone;
- transmission time
Summary
Describes user concerns with how fast connections through a telecommunications service are set up. Distinguishes circuit-switched and packet-switched services. Defines the generic measure for circuit-switched services to be Post-Dial Delay (PDD), but recommends that quantification and evaluation be based on distributions of repeated measurements of PDD, rather than averages. Describes in detail how PDD is generated, showing every relevant element of delay introduced by the signaling system, together with the associated quantifiers of intrinsic QoS. Notes additional factors that must be considered for packet-switched services. Provides guidelines for interpreting distributions of delays to evaluate QoS with respect to routing speed.