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  Home : ITU-T : Publications : Recommendations : E Series : E.550 : E.550 (03/93)
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E.550 : Grade-of-service and new performance criteria under failure conditions in international telephone exchanges

Recommendation E.550 (03/93)

Approved in 1993-03-01

Status : In force

 

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English

PDF Document PDF (acrobat)

99414 bytes 1994-09-19 E 5074 
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PDF Document PDF (acrobat)

108284 bytes 1994-09-19 S 5075 
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PDF Document PDF (acrobat)

118864 bytes 1994-09-19 F 5073 

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Word Document Word

85795 bytes 1994-09-19 E 5074  Download
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Word Document Word

102077 bytes 1994-09-19 S 5075  Download
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Word Document Word

101142 bytes 1994-09-19 F 5073  Download

 

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Updated : 2003/07/21