The Hold button allows the current call to be held, so that another call can be answered, or modified, for example, transferred or conferenced.

When a call is held, for all endpoints with a visible indicator for the line in use the lamp or icon flashes for the line appearance (which may be a call appearance button or a bridge appearance). Other lamps or icons match the states of whatever operation is carried on for that button.

To retrieve the call, press the line appearance button with the flashing icon that was the line appearance of the held call.

The Hold button cannot be removed or assigned any different function.