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| M.821�:�Optional expansion of the digital selective-calling system for use in the maritime mobile service
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Recommendation M.821
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Approved in 1997-02
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Managed by R00-SG05
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Number
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Title |
Status |
Questions |
M.821-1 (02/97)
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Optional expansion of the digital selective-calling system for use in the maritime mobile service
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In force (Main)
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N/A
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| Previous versions |
Number
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Title |
Status |
Questions |
M.821-0 (03/92)
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Optional expansion of the digital selective calling system for use in the maritime mobile service
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Superseded
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N/A
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