Samsung OfficeServ DS-5021D User Manual page 62

Exclusive Hold
To place an outside call on hold exclusively so that other users cannot get it.
NOTE
Intercom calls will always be placed on exclusive hold.
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1 Press the [Hold] button twice.
2 The call will flash green on your phone and this line
will show a steady red light on other stations.
3 To retrieve the call on hold, press the flashing green
line button or press the [Hold] button.
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