This invention relates to phonetic communication system and method based on mobile telephone phonetic coding/decoding system. Said system includes mobile telephone set, gateway based on signaling communication process, comparing and consulting common phonetic coding/decoding mode, and establishing phonetic service connection, wherein the mobile telephone set including mobile communication network RF module, CPU, men-machine interface module, memory module, phonetic signal processor, power supply module, phonetic coder/decoder, microphone, earphone, WLAN chipset and protocol processor, the universal type gateway including shared memory, network processor, external interface and digital signal processor. Said invention can be used in mobile communication network and wireless local network,said gateway supporting all phonetic coding/decoding mode capable of realizing plurality of terminals unified accessing in VoIP with simplified design. |