define and change dsp conference ids

make asterisk call implementation

new interface.conf (add remove ports by admin)

reduce mixer

call recording

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





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, ...