AR1688 Solution   AR1688 is a low cost and high integration replacement for PA1688. It has a 8-bit Z80 core to handle VoIP related protocols and a 24-bit DSP to process voice. We also provide AR168M VoIP module and AR168R RoIP module to help various devices enjoying voice over IP communication quickly. What is new: 0.62 software updated on May 29, 2013.   Software support, hardware design, reference settings, ring tones and hold music download, FAQ, miscellaneous.