http://www.infinititelecommunications.com.au/phone-systems/phone-system-handsets/alcatel-phone-handsets/alcatel-4019-handset.html

Conference calls on the Alcatel 4019 phone handset - The Alcatel 4019 digital handset is compact, reliable, inexpensive and looks great. The next model up in the Alcatel handset range is the executive 4029 handset.

http://www.infinititelecommunications.com.au/phone-systems/phone-system-handsets/alcatel-phone-handsets/alcatel-4019-handset.html