Transmission method, system and apparatus for internet protocol to bear voice data packages

The invention relates to a method for transmitting a voice data packet carried by the Internet protocol and a system as well as a device, wherein, the transmission method divides a VoIP group into a plurality of VoIP subgroups and reduces the expense of a control signaling in the transmitting procedure of VoIP packets. The technical proposal adopted by the invention is that: a sending device comprises a dividing module, a generating module, a multicasting module, multicasting modules for the subgroups and a transport module; the receiving device comprises a reading module, a positioning module and a parsing module; by arranging the receiving module in a terminal, a terminal which can receive the VoIP packets under a VoIP subgroup mode is provided; and a transmission system is formed by combining the sending device and the receiving device, thereby realizing the transmission of the VoIP packets at very low expense of the control signaling; by the technical proposal, the expense of the control signaling in the VoIP data is reduced greatly.