|The Care and Feeding of ISDN4BSD|
|12.6 DTMF Decoding||12 Setting up the||13 Setting up i4b|
12.7 300 Baud Soft-Modem
Poul-Henning Kamp contributed code to convert the i4b telephone facility into a 300 Baud V.21 Software modem. It is available in the V.21 subdirectory of the i4b distribution. Please note, that the kernel patch has already applied, so the README is not quite correct here.