Chapter 7. Routing Speed

  1. William C. Hardy

Published Online: 18 APR 2002

DOI: 10.1002/0470845910.ch7

QoS: Measurement and Evaluation of Telecommunications Quality of Service

QoS: Measurement and Evaluation of Telecommunications Quality of Service

How to Cite

Hardy, W. C. (2001) Routing Speed, in QoS: Measurement and Evaluation of Telecommunications Quality of Service, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/0470845910.ch7

Author Information

  1. WorldCom, USA

Publication History

  1. Published Online: 18 APR 2002
  2. Published Print: 1 JUN 2001

ISBN Information

Print ISBN: 9780471499572

Online ISBN: 9780470845912

SEARCH

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.