asterisk-chan-capi | Common ISDN API 2.0 implementation for Asterisk | Mehr ...
A channel driver for the Asterisk software telephony using the Common ISDN API 2.0. Provides core ISDN functionality which is not provided by the native Asterisk isdn4linux channel. . List of implemented features: . * ISDN connection handling (CID,DNID) * multiple Controller support * digital audio support * DTMF detection/generation * incoming/outgoing calls * CLIP/CLIR * early B3 connects * native ISDN indications * CD, HOLD, RETRIEVE, ECT * overlap sending (dialtone) * DID on P2P * call progress (INFO_IND) * RX/TX gains * call deflection on circuit busy . Website: http://www.chan-capi.org/