U.21�:�Operator recall on a telex call set up on a radiotelegraph circuit

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U.21�:�Operator recall on a telex call set up on a radiotelegraph circuit �

Recommendation U.21

In force components
Number	Title	Status
U.21 (11/88) �	Operator recall on a telex call set up on a radiotelegraph circuit �	In force

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