https://error.wtf/up/LINO_PC_T_0.wav
https://error.wtf/up/LINO_PC_T_1.wav
https://error.wtf/up/LINO_PC_T_2.wav
https://error.wtf/up/LINO_PC_T_3.wav
https://error.wtf/up/LINO_PC_T_4.wav
https://error.wtf/up/LINO_PC_T_5.wav
https://error.wtf/up/LINO_PC_T_6.wav
https://error.wtf/up/LINO_PC_T_7.wav
https://error.wtf/up/LINO_PC_T_8.wav
https://error.wtf/up/LINO_PC_T_9.wav
https://error.wtf/up/LINO_PC_T_hash.wav
https://error.wtf/up/LINO_PC_T_star.wav
mehr dazu auf wikipedia: https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling