1887

Instructions for the International Telephone Service

image of Instructions for the International Telephone Service

These instructions include Recommendation ITU-T E.141 which was withdrawn on 20 March 2003 by Circular 156.

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Preliminary note

When there is a long period of congestion at the outgoing international exchange, it is best to use outgoing preparation operation instead of demand working, until normal traffic conditions are re-established.

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