This is the kernel module source for the Rhino R1T1, RCBFX, and RXT1 telephony cards and has been modified for compatibility with the latest version of DAHDI (3.1.0 as of 5/17/21).
You can find a more conclusive write-up here: https://vofr.net/proj/r1t1/
This has been tested with the following:
- Both the PCI and PCIe version of the R1T1
- Debian 10 with kernel 4.19.0-16-amd64
- DAHDI 3.0.0 and 3.1.0
- Certified Asterisk 16.8-cert8