The
ufoma
driver provides support for USB mobile phone terminals in the subset of
the Mobile Computing Promotion Consortium USB Implementation Guideline,
which is adopted by FOMA, the NTT DoCoMo 3G system, terminal.
These are partly like CDC ACM model based modems, which are supported
by
umodem(4),
but the
ufoma
driver recognizes a specific USB descriptor that describes its role and
interface structure, and it will negotiate its role when the device is open.
They support a regular AT command set and
the commands can either be multiplexed with the data stream
or handled through separate pipes.
In the latter case the AT
commands have to be given on a device separate from the data device.
The device is accessed through the
ucom(4)
driver which makes it behave like a
tty(4).
