A customer has a Communication Server 1000 RIs. 7 x system at their site. You have been asked to add the Call Pickup feature to the ten IP telephones in the sales department. The customer wants to be

A customer has a Communication Server 1000 RIs. 7 x system at their site. You have been asked to add the Call Pickup feature to the ten IP telephones in the sales department. The customer wants to be sure active calls are not lost when the change are made. Which Phones Configuration feature can be enabled allowed you to ensure changes to the telephones are not transmitted to the call server until the telephone is not busy?