WPCL 2BJ|x H    6p&6p& I  H   c4 P  Fascicle VII.2 - Rec. U.7 PAGE1 I  HH   c4 P PAGE2 Fascicle VII.2 - Rec. U.7  HH Hp P X`h!(# X   c4 P Recommendation U.7 89 c4 P NUMBERING SCHEMES FOR AUTOMATIC SWITCHING NETWORKS 8; c4 P (former CCIT Recommendation E.7, Geneva, 1956)  The CCITT, considering  H  that with fully automatic working between subscribers in the international telex service it is desirable to envisage the possibility:  H  a)pof routing traffic over the appropriate international trunk route where more than one such route exists between two countries;  H  b)pof enabling the appropriate tariff to be determined automatically (in the originating country), even if the destination country is divided into several tariff zones, unanimously declares the view  H  (1)pthat subscribers' national numbering plans should be systematically arranged;  H  (2)pthat, where more than one international trunk route exist between two countries, the corresponding geographical division and hence the  H appropriate point of entry should be identifiable by examination of the initial digits of the called subscriber's national number;  H  (3)pthat, where a multiple tariff scale exists, the different tariff zones should be identifiable in the originating country by the initial digits of the called subscriber's national number;  H  (4)pthat the number of initial digits to be examined should be limited, preferably to one, but in any case should not exceed two. When a single digit provides the discrimination it will usually be the first digit, but, where the subscribers' national numbers have a uniform initial digit (usually 0) to permit discrimination on internal calls, the following (second) digit should be used.  H  Note - The attention of Administrations (and recognized private operating agencies) is drawn to the considerable technical advantage that would result from the adoption of a single tariff between two countries.