The SwitchPi DAWN is designed for to supports high-density Asterisk channels (2 TDM buses, up 64 Asterisk channels), that run on a single server with PCIe bus.
The SwitchPi DAWN has 2 TDM buses, 2 powerful DMA engines, and 2 separated SPIs to connect Codecs. It also can extend to support a 16bits width local bus (INTEL).
The SwitchPi DAWN also provides an experience version FPGA core and board, which supports one TDM bus, 2 FXO Asterisk channels, the design aim is to make a Tiger320 similar FPGA implements. Also, the most advanced is this version fully open source, that is included DAWN FPGA IP core, hardware design and Dahdi driver, you can build your own DAWN board by easily. Check it out on our Github website at here