You can register multiple extensions to a Yealink DECT Base as accounts. You can then set up handsets to receive incoming calls for all accounts, or only select accounts. You can also choose a default Outbound SIP Account per handset. These settings allow you to configure handsets to act as their own extensions or all ring in a group (without sending multiple SIP INVITES to the base station).Incoming Line AssignmentThe following override will allow you to configure incoming lines on a per handset basis.handset.X.incoming_lines="1,2,3,4,5,6"Replace the 'X' with the handset Number. The value should be the Line numbers that should be associated with the handset.Outgoing Dial Out LinesThe following override defines which lines the Handset will be able to use to dial out.handset.X.dial_out_lines="1,2,3"Replace the 'X' with the handset Number. The value should be the Line account numbers that should be associated with the handset.Outgoing Default LineThe following override defines which line the Handset will use by default when dialing out.handset.X.dial_out_default_line="1"Replace the 'X' with the handset Number. The value should be the Line account numbers that should be associated with the handset.Changing the Handset NamesThe following override allows you to change the names of the handsets for easy identification.handset.X.name="Name"Replace the 'X' with the handset Number. The value should be the alphanumeric name you would like to apply to the phone.handset.X.name[lineshandset.X.incoming_liness