Digital phone and answering system is expandable up to 12 handsets. The base station with corded handset gives your business the assurance it will work even during a power outage. Innovative Cell LiNKâ„¢ allows you to use the system as an extension to make or receive calls from up to four connected BluetoothÂ®-enabled cell phones. Transfers up to 1,500 contacts from each cell phone. Features 200-entry phonebook, calling blocking up to 20 numbers, 50-Caller ID memory and 5-number redial.