This invention discloses a method and system for realizing IP phonetic service including NAT technological group network personal network by adding address agent servers, setting up TCP/UDP data connection between personal PC customer end registration stage and the address agent server and presetting up general channel including calling signaling channel and logic channel needed for making phone calls between PC customer end and Volp server at the registration stage, using source address and source terminal number (public address) of each channel after NAT conversion to replace corresponding PCC personal address, actually to preserved calling signaling channel and logic channel (phonetic channel, realizing Volp service used in NAT. |