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F.921 : Audio-based indoor and outdoor network navigation system for persons with vision impairment  

Recommendation F.921

In force components
Number
 Title Status
F.921 (08/18)
  		Audio-based indoor and outdoor network navigation system for persons with vision impairment   In force
 
 
Superseded and Withdrawn components
Number
 Title Status
F.921 (03/17)
  		Audio-based network navigation system for persons with vision impairment   Superseded

 

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Updated : 2019-10-31