GAS 9 handbook.
Contributors: GAS 9 (Group); International Telecommunication Union.
Publisher: International Telecommunication Union; International Telgraph and Telephone Consultative Committee
Published: 1988
Place of publication: Geneva
Language: eng
Subjects: Digital communications -- Planning; Telecommunication systems
Notes: Vol. A's purpose "is to offer examples to illustrate the GAS 9 Handbook entitled "Economic and technical aspects of the transition from analogue to digital telecommunication networks" -- Introd.

Includes bibliographical refrences.
Table of contents: value: A. Case study on the economic and technical aspects of the transition of a complete analogue national network moving to a digital network; value: B. Case study on the economic and technical aspects of the transition of a mixed (analogue/digital) national network moving to a digital national network.