Todo-list:

AT-Command for binding off ttys to a channel.
AT-Command for setting Service-Indicator and AddInfo on dialout.
Windowsize-Setup for Teles
Wait, if dialing and a callback is expected
SyncPPP
atdl

Audio-devices (will come soon, when Diehl-Lowlevel-Driver is ready).
Support of more packet-encapsulation-types (CISCO ...)

