OBEX protocol library - development files The Object Exchange protocol can best be described as binary HTTP. OBEX is optimised for ad-hoc wireless links and can be used to exchange all kind of objects like files, pictures, calendar entries (vCal) and business cards (vCard). OBEX is builtin in devices like PDA's like the Palm Pilot, and mobile phones like the Ericsson R320, Siemens S25, Siemens S45, Siemens ME45, Nokia NM207 and Nokia 9110 Communicator. This package contains the development files.