I'm working on a software to access and configure an ISDN phone
connected via USB. Currently the software accesses the device from
user-space with the composite USB driver that's provided by OS X by
default (see USB-Probe and IOReg output below), with its own (and
somewhat incomplete) AT-Command-Set.
The phone supports the complete AT-Commands-Set (and additional
vendor specific commands). So far everything works fine but now I
stuck...
I want to make the phone available as modem, as this would make
communication with the phone much easier - and it could be used as
modem too. I've tried to modify the USBCDC drivers (10.3.9) to match
the device but failed (this is my first USB/driver project!).
1. Is there a way to force OS X to match the device with the systems
default CDC-Driver instead of the composite one?
2. Or do I need to write my own kernel extension? If so, is there a
10.4.x version of the AppleUSBCDC driver source?
3. The device has 4 interfaces (at least #0 and #1 can be used for AT-
Commands), can I attach more than one interface, e.g. one as CDC and
the other as composite?
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