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E.140 : Operator-assisted telephone service

Recommendation E.140

In force components
Title Status
E.140 (08/92)
Operator-assisted telephone service   In force
Superseded and Withdrawn components
Title Status
E.140 (11/88)
Principles for the operation of international telephone services  
Amended by Addendum to circular CCITT No. 23 dated 25 April 1990, amendments to be applied as of 1st July 1990


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Updated : 2010/03/28