This module may be used for special applications that require
cross connecting of bchannels, conferencing, dtmf decoding,
- echo cancelation, tone generation, and Blowfish encryption and
+ echo cancellation, tone generation, and Blowfish encryption and
decryption. It may use hardware features if available.
E.g. it is required for PBX4Linux. Go to http://isdn.eversberg.eu