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The Rolm phone SPKR button enables a station user to put a call on to the base unit Speaker.  This speaker is located directly below the handset cradle.  The base unit microphone is located below the Transfer button.
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To place a call on to the base unit Speaker...
Press ... SPKR
Then hang-up the handset ... hang-up
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Speaker volume can be adjusted by ...
Pressing volume up ... volume up
or by...
Pressing volume down ... volume down
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To take a call off the Speaker simply ...
Pickup the handset ... Pickup the handset
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Phone User Guide   |   Siemens Rolm Phone User Guide