The OAK PRO analog Raspberry Pi module is a revolution version of OAK and OAKR2, it adds a DSP chip to implement the echo cancelation algorithm, significantly improved the voice quality on traditional PSTN network to VoIP phones. It also supports one(1) built-in low power FXS module and one (1) FXO module.
The OAK PRO module is compatibles with all versions of Asterisk using the DAHDI driver framework. Asterisk and DAHDI are available for free from the Asterisk.org website.
The OAK RPO module supports Raspberry Pi 4B, 3B+, Pi 3.
Specifications:
- One DSP chip for 128ms ITU-G168 standard echo cancelation
- One (1) FXO plus one (1) low power SwitchPi Stone FXS and FXO analog port
- Raspberry Pi I2S, SPI bus architectures
- Combine line (FXO) and station (FXS) modules
- Loop Start or Kewl Start Signaling
- Temperature: 0° to 50° C
Firmware:
- Asterisk 13.20.0
- Dahdi 2.11.1
- The OAKPRO module fully supports the SwitchPi own GUI.
- The OAKPRO is fully open hardware and software designed, get started in https://github.com/lixinswitchpi/oakpro
Pictures:
