Std

ITU-T E.157 [ Active ]

International calling party number delivery

standard by International Telecommunication Union-T , 06/01/2021

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Product Details

Edition:
21
Published:
06/01/2021
Number of Pages:
12
File Size:
1 file
 

Document History

  1. ITU-T E.157

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    International calling party number delivery

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  2. ITU-T E.157


    International calling party number delivery

    • Historical Version