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� Home : ITU-T : Publications : Recommendations : E�Series : E.420 : E.420 (11/88)
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E.420�:�Checking the quality of the international telephone service - General considerations �

Recommendation E.420 (11/88)

Approved in 1988-11-25

Status : In force

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PDF Document PDF (acrobat)

117249 bytes 1989-01-31 E�14858�
Espa�ol

PDF Document PDF (acrobat)

128882 bytes 1989-01-31 S�14858�
Fran�ais

PDF Document PDF (acrobat)

139464 bytes 1989-01-31 F�14858�

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Format Size Posted Article Number TIES users
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Word Document Word

1655896 bytes 1989-01-31 E�14858� Download
Espa�ol

Word Document Word

1668294 bytes 1989-01-31 S�14858� Download
Fran�ais

Word Document Word

1721156 bytes 1989-01-31 F�14858� Download

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