Question 6/XII - Harmonization of G.100-Series of Recommendations
(continuation of Question 37/XII studied in 1985-88)

Considering that

(a) when planning the (national and international) circuits, connections
and networks for the transmission and switching of telephone and other
voice-band signals, some problems may arise from the present lack of
harmonization of the Recommendations concerning the apportionment of
impairments to the national systems and international circuits as well
as to the two-wire and four-wire sections; further, as a consequence of
the fact that Recommendations were drafted at different periods in time
and with emphasis on the corresponding technologies (earlier, purely
analogue and later on, mixed analogue/digital transmission and
switching), the Recommendations - though being themselves correctly and
well formulated - may convey sometimes slightly different meanings,
view-points and general guidances; these facts are in the future no
longer admissible as more and more correlations are being established
between the transmission quality parameters in the national and
international circuits in the evolving networks;

(b) revisions to existing Recommendations will be made in the future,
and new Recommendations will be proposed;

(c) changes to the tables published in Volume III of the Blue Book will
be required,

The CCITT decides to study the following Questions:

1. What modifications and/or rearrangements are necessary to the present
texts of the G.100-Series Recommendations to adequately harmonize them?

2. What modifications and/or rearrangements are necessary to the present
text of the tables summarizing the Recommendations concerning line
transmission, in order that they are harmonized with the G-Series
Recommendations?