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F.721 : Videotelephony teleservice for ISDN  

Recommendation F.721

In force components
Number
Title Status
F.721 (08/92)
 
Videotelephony teleservice for ISDN   In force
 
 
Superseded and Withdrawn components
Number
Title Status
F.721 (11/88)
 
Basic narrow band videophone service in the ISDN   Superseded

 

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Updated : 2007/10/03