Driver for Apple USB modem 05ac:1401

[annonygmouse <annonygmouse@yahoo.co.uk>]

Hi, I'm using a MacBookPro laptop with debian sid on it.

Unfortunatelly it has no MODEM (PSTN) and during hollidays I needed one.
The bad luck is that I read on an Ubuntu forum about the modem and that
it worked, but I missread, they refered to an internal modem, not the 
USB one.

So I have now this useless (in linux, on MacOSX it works) usb modem.

lsusb shows:
Bus 001 Device 005: ID 05ac:1401 Apple, Inc.

so it detects it as an Apple thing, but shows nothing more...

And here's the relevant part of "cat /proc/bus/usb/devices"

T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  5 Spd=12  MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=05ac ProdID=1401 Rev= 2.02
S:  Manufacturer=Motorola, Inc.
S:  Product=Apple USB Modem
S:  SerialNumber=000000
C:* #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr= 50mA
I:* If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=03 Prot=00 Driver=(none)
E:  Ad=81(I) Atr=03(Int.) MxPS=  11 Ivl=1ms
I:* If#= 1 Alt= 0 #EPs= 0 Cls=ff(vend.) Sub=02 Prot=ff Driver=(none)
I:* If#= 2 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=(none)
I:* If#= 3 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=(none)
I:  If#= 3 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=(none)
E:  Ad=82(I) Atr=25(Isoc) MxPS=  24 Ivl=1ms
I:* If#= 4 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=(none)
I:  If#= 4 Alt= 1 #EPs= 1 Cls=01(audio) Sub=02 Prot=00 Driver=(none)
E:  Ad=03(O) Atr=05(Isoc) MxPS=  24 Ivl=1ms
I:* If#= 5 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)


I've googled and found nothing about this modem working in linux.
I contacted Greg KH and he told me it should work with the kernel module 
cdc-acm.

I've tried to modprobe cdc-acm but I can't see any /dev/ttyACM or 
anything similar. So I presume the module does not work for this modem.

Furthermore, when I plug the modem dmesg shows this:
usb 1-1: new full speed USB device using uhci_hcd and address 5
usb 1-1: configuration #1 chosen from 1 choice
usbcore: registered new interface driver snd-usb-audio

but does not load the cdc-acm module.
I try to modprobe it and dmesg shows:
usbcore: registered new interface driver cdc_acm
drivers/usb/class/cdc-acm.c: v0.25:USB Abstract Control Model driver for 
USB modems and ISDN adapters

but I find nothing under /dev that may be of use (no /dev/ttyACM0 or 
/dev/cuaXX...

Any help will be appreciated.

Sebastià