Polycom MGC Administrator Administrator's Manual page 393

MGC Administrator's Guide
To stop Repeated indications:
Event indications which are not repeated, are played once. Repeated
indications will be played until stopped by the operator or when the event is
no longer occurring. You can stop all the repeated indications for all
connected MCU's or you can stop the indications per MCU. When a new
event occurs the indication is played again.
To stop all repeated Event Indications for all MCU's:
On the Options menu, click Stop Current Indication Repeating.
All repeated indications are halted.
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