Description Of Keyboard Controls - Siemens Hicom 300 Operator's Manual

Description of Keyboard controls

Tape Recorder - used to record conversations if tape recorder is
connected to the system.
Trunk No. ID - used to identify faulty trunk line number.
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Serial Call - call can be placed in series by depressing series key.
Calls placed in series will recall to the Console for re-extending to the
next extension.
Call Park - for parking a call in one of the 10 park locations per
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console. The location number is displayed on the screen for the
operator.
Cut Off - will disconnect a call set up by the operator.
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