Bugs:
=====
* Kernel cpu consumption in conversation mode. This is a kernel-internal
  problem. While reading blocks (255 bytes max) from ttyI, select(s) seems
  to consume lot's of cpu time in kernel space while NOT BLOCKING!
  -> not a big problem for now, just less idle tasks ;)

Feature requests:
=================
* client/server architecture (ttyI network forward)

Feature ideas: (tell me to move some of them to "feature requests")
==============
* Caller Id monitor
* sound for ring (incoming / outgoing)
* make install
* recording / playback to files
* (saved?) config file / use environment variables
* graphical sound visualization
* database connection (caller id, times of incoming / outgoing, ...)
* mixer or at least some sound calibration support
* compensate sample drift (difference between isdn and oss)
* man page
* debian package
* automake/autoconf integration
* command line interface
* BSD (and possibly other) UNIX support
* H.323 client functionality
