Very simple SIP softphone for radio station use

Very simple SIP softphone for radio station use

Cancelled

Job Description

Creation of a simple Windows desktop softphone application to connect to and control inbound calls in an Asterisk setup, for use in a radio station. The application will be maximised on a computer screen and must show 4 SIP telephone lines (independently registered on different accounts).

In essence I need a piece of software which will show 4 lines and can be labelled which flash when ringing, can be answered by the click of a button and disconnected in the same way. There must be an option to choose which soundcard the software will use for inbound/outbound audio (though this is not line dependent and the same one can be used for all 4 lines).