The Hold button is used to place a call on hold with an on-hold music, if provided. Providing on-hold music is a function of Communication Manager and not of Device Adapter. For more information, see the Communication Manager documentation.

The call can be placed on hold for several reasons, such as to answer another call and to switch from headset to handset or speakerphone to handset.

Retrieving a call is done by pressing the line appearance that is on hold or by pressing the speaker or headset button, if available. If you press the line appearance that is on hold and if the handset is off-hook, the handset becomes active. Otherwise, the speaker phone or headset, if available, becomes active.