make asterisk call implementation new interface.conf (add remove ports by admin) call to multiple endpoints (extensions) trace with layers and filters - layer 1 and 2 state changes and messages - layer 3 isdn trace, process ids - messages between port, endpoint and call - port hunt and channel selection - dialing / routing - application process (action) - bchannel control (tones, dsp, filter, activation/deactivation) avoid disconnect-collision (release if disconnect from both sides) display message during nothing/play Port -> Channel Call -> Link connect_acknowledge maybe: delay - per param setzen, lokal als mISDNsignal und remote mittels setup old stuff.... NOTE: check CENTREX durchstellen mit disconnect durchstellen mit keypad ruf bei CFP gibt besetzt, wenn teilnehmer intern besetzt ist. short ring sleep relaxed auto pick alarm clock (timer) sonderwahlton facility: diversion, 3pty, ...