There have been alot of discussions going around about support of java ME to rtp and rtsp to stream media from a remote server. Can RTP also be used in VoIP application e.g Writing a client in javaME that converge with MSN messenger to make a voice chat ? I also know that writing a real time application such as VoIP client is better off written in a native language such as symbian c++. Could someone please sum up all that javaME lacks to develop a VoIP application?