Using the Hold feature differs by user and by phone type, and the same is true of the Hold feature in Standard Local Survivability (SLS) mode. Some users return to a call on Hold by pressing the Call Appearance button, however, CM has an administrable parameter that allows users to release a call on hold by pressing the Hold button a second time (if only one call is held). The Hold feature also works differently in DCP and IP phones and analog phones in the survivable mode.
