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  Home : ITU-T : Publications : Recommendations : X Series : X.81 : X.81 (11/88)
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X.81 : Interworking between an ISDN circuit-switched and a circuit-switched public data network (CSPDN)  

Recommendation X.81 (11/88)

Approved in 1988-11-25

Status : In force

 

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English

PDF Document PDF (acrobat)

253233 bytes 1989-11-10 E 15406 
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PDF Document PDF (acrobat)

292560 bytes 1989-11-10 S 15406 
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PDF Document PDF (acrobat)

297053 bytes 1989-11-10 F 15406 

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Word Document Word

4735640 bytes 1989-11-10 E 15406  Download
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Word Document Word

5100681 bytes 1989-11-10 S 15406  Download
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Word Document Word

4495848 bytes 1989-11-10 F 15406  Download

 

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Updated : 2003/10/01