http://www.iptel.org/ SIP 프록시
http://sourceforge.net/projects/kphone/

http://tykim.wordpress.com/2010/02/05/iphone%EC%97%90%EC%84%9C-%EC%82%BC%EC%84%B1070-sip-%EC%86%8C%ED%94%84%ED%8A%B8%ED%8F%B0-%EC%82%AC%EC%9A%A9%ED%95%98%EA%B8%B0/
iPhone에서 삼성070 SIP 소프트폰 사용하기 « Peter .WEB2‎ -

http://www.korone.net/bbs/board.php?bo_table=qt_qna&wr_id=14229&sfl=&stx=&sst=wr_hit&sod=asc&sop=and&page=46