hang-up signal
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- An on-hook signal sent from an end office toward the disconnect-control office indicating either calling or called user hang-up and requesting the connection be disconnected. The interface remains dedicated to the call until the disconnect-control office responds to the hang-up signal. [T1.104-1988]
ATIS - Cite This Source - This Definition - abandonment, Answer/Disconnect Supervision, answer signal, call-processing state, disconnect-control office, disconnect timing, on-hook signal, supervisory signaling