Hi.
PhonerLite 2.12beta under Win7 x64 understand only speaker and microphone from Yealink USB-P1K phone (which is listed as supported), but not its keyboard. I inspect loaded DLLs and see that USBPhone.dll is loaded but not P1K.dll (which USBPhone.dll must load for this phone) for reason unknown.
Of course this phone keyboard works with Yealink's own *Mate programs.
Yes, I select USB Audio Device in both speaker and microphone and even make reboot after first device plugging in.
Device ID USB\VID_6993&PID_B001&REV_0000&MI_00