Only one call can be active at any given time; all other remaining connected calls must be placed on hold. You cannot continue, end, transfer, or otherwise handle a call while it is on hold.
Engaging the Hold feature typically generates music or a beeping tone. For this reason, avoid putting a conference call on hold.
In situations where there are multiple calls on a single line, the active call always appears at the top of your screen; the held call appears below.
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