A customer has deployed a Communication Server 1000 Rls 7.0 system at their site. The technician asked to add the call picking feature to the 10 IP telephones. The customer wants to be sure active…

A customer has deployed a Communication Server 1000 Rls 7.0 system at their site. The technician asked to add the call picking feature to the 10 IP telephones. The customer wants to be sure active calls are not lost when the changes are made. Which phones configuration feature can be enabled that will ensure changes to the telephones are not transmitted to the call server until the telephone is not busy?