Question 21/II - CCITT Handbook(s) on application and implementation
of Recommendations on Quality of Service (new Question)

Considering

(a) that administrations need rules and tools to evaluate the
performance of services, networks, components, etc. (for example,
such evaluation is helpful in discussions with manufacturers);

(b) that the majority of existing performance Recommendations and
textbooks do not cover the practical need of operating, maintenance
and planning staff;

(c) the information assembled during the studies for drafting the new
Recommendation E.880 (field data collection and evaluation on the
performance of equipment, networks and services) (reference COM II-
R 29 and Temporary Document 603 from 15-23 February 1988 meeting of
Study Group II) is of a generally useful nature;

(d) some other proposed new and revised Recommendations
developed by Study Group II and related Study Groups can form the
basis for handbook material such as E.600, E.550, E.420, E.424, E.428
and
X.137;

(e) the existence of the CCITT Handbook on Quality of Service,
Network Management and Network Maintenance;

(f) Recommendation E.800 (Quality of Service vocabulary) (previously
G.106) has become a general reference;

(g) the need for harmonization of Quality of Service work within the
CCITT coordinated by Study Group II and the stated aims of the
VIIIth Plenary Assembly and Study Group II to rationalize availability
and reliability studies,

a CCITT Handbook(s) should be created:

Aim: Aid in the understanding and application of related
Recommendations.

Target Group: Operating, maintenance and planning staff and those
involved in establishing and meeting performance criteria.

-All Recommendations and proposed Recommendations developed by
Study Group II and related Study Groups on Quality of Service,
including dependability such as concepts, models, field data collection
and evaluation, operation, maintenance and planning should be
reviewed and the Handbook prepared based on this material.

-The Handbook should contain descriptive explanations, practical
instructions, examples and references inside and outside the CCITT.