Sanyo 8100 cellphone - can't activate acm for usb modem

Perhaps the Sanyo 8100 cellphone data cable is emulating a serial port
via USB?

In other words USB-to-RS232 conversion happens in the data cable.

Which means the PHONE is actually RS232 but the CABLE is USB...

Sooooooooooooooooooooo,

If the USB-to-RS232 happens in the cable, one could cut up the data
cable on the RS232 side. Then solder in a DB9 female - voila - any
RS232 device now talks to the cellmodem directly.

Googled far & wide for an RS232 cable for the Sanyo 8100 - no luck so
far which is not a good sign that this baby is actually RS232
friendly.

Also, the converting cables normally have a bulge on them where the
conversion IC is embedded in the cable.

Anyone with 8100 data cable spot a bulge? Huh? Huh?


>[email protected] (Frank Harrell) wrote in message news:<[email protected]>...
> [email protected] (Beyer) wrote in message news:<[email protected]>...
> > [email protected] (Frank Harrell) wrote in message news:<[email protected]>...
> > > I have been unable to get Redhat 9 to start up acm.o at boot time,
> > > after trying various permutations in /etc/modules.conf. Here is my
> > > latest try:
> > >
> > > alias usb-controller usb-uhci
> > > alias char-major-166 acm
> > > post-install char-major-166 /sbin/modprobe acm
> > >
> > > I'm running the 2.4.20-19.9 kernel. Because (I think) acm is not
> > > running, when I plug in the usb cable for the Sanyo 8100 cellphone I
> > > gIet "USB device not accepting new address" even when I manually
> > > modprobe acm. USB is working great with a webcam.
> > >
> > > I ran mknod /dev/usb/ttyACM0 c 166 0 to make a device for this purpose.
> > >
> > > Thank you very much for any assistance.
> > >
> > > Frank
> >
> > Hello Frank, I had a similar problem with my pctel modem. I am using
> > slackware 9 and to fix it, i just put the command insmod -f pctel and
> > insmod -f ptserial into /etc/rc.d/rc.modules/ (i dunno it may be
> > differant) but maybe try insmod -f acm....worth a try? hope i helped.
> >
> >


> > -Cody
>
> Thanks for your suggestion Cody. I rebooted my system and now the
> setup I gave above works. I had gotten an error message related to
> USB that I thought was fatal but it must have been just a warning.
> Now all is well - can connect to the internet in 5 seconds.
>
> Frank

---

› See More: Sanyo 8100 cellphone - can't activate acm for usb modem

picnic <[email protected]> wrote:
> Anyone with 8100 data cable spot a bulge? Huh? Huh?

No bulges; it's just 'wires' on the 8100 data cable.

Even inside of the 8100, I'd be surprised if there's a separate USB->RS-232
chip. Although a PC sees the phone as a USB serial device, I'm willing to
bet a nickel that those serial packets going over USB just end up in a
directly accessed FIFO somewhere and never turn into anything remembering a
real serial bitstream.

---Joel Kolstad

[email protected] (picnic) wrote in message news:<[email protected]>...
> Perhaps the Sanyo 8100 cellphone data cable is emulating a serial port
> via USB?
>
> In other words USB-to-RS232 conversion happens in the data cable.
>
> Which means the PHONE is actually RS232 but the CABLE is USB...
>
> Sooooooooooooooooooooo,
>
> If the USB-to-RS232 happens in the cable, one could cut up the data
> cable on the RS232 side. Then solder in a DB9 female - voila - any
> RS232 device now talks to the cellmodem directly.
>
> Googled far & wide for an RS232 cable for the Sanyo 8100 - no luck so
> far which is not a good sign that this baby is actually RS232
> friendly.
>
> Also, the converting cables normally have a bulge on them where the
> conversion IC is embedded in the cable.
>
> Anyone with 8100 data cable spot a bulge? Huh? Huh?

Thanks for the note but the cable is not the problem. I can get the
USB connection to work fine, but not every time, and I still have
trouble getting acm to activate at boot time.

Frank

>
>
> >[email protected] (Frank Harrell) wrote in message news:<[email protected]>...
> > [email protected] (Beyer) wrote in message news:<[email protected]>...
> > > [email protected] (Frank Harrell) wrote in message news:<[email protected]>...
> > > > I have been unable to get Redhat 9 to start up acm.o at boot time,
> > > > after trying various permutations in /etc/modules.conf. Here is my
> > > > latest try:
> > > >
> > > > alias usb-controller usb-uhci
> > > > alias char-major-166 acm
> > > > post-install char-major-166 /sbin/modprobe acm
> > > >
> > > > I'm running the 2.4.20-19.9 kernel. Because (I think) acm is not
> > > > running, when I plug in the usb cable for the Sanyo 8100 cellphone I
> > > > gIet "USB device not accepting new address" even when I manually
> > > > modprobe acm. USB is working great with a webcam.
> > > >
> > > > I ran mknod /dev/usb/ttyACM0 c 166 0 to make a device for this purpose.
> > > >
> > > > Thank you very much for any assistance.
> > > >
> > > > Frank
> > >
> > > Hello Frank, I had a similar problem with my pctel modem. I am using
> > > slackware 9 and to fix it, i just put the command insmod -f pctel and
> > > insmod -f ptserial into /etc/rc.d/rc.modules/ (i dunno it may be
> > > differant) but maybe try insmod -f acm....worth a try? hope i helped.
> > >
> > >
>
>
> > > -Cody
> >
> > Thanks for your suggestion Cody. I rebooted my system and now the
> > setup I gave above works. I had gotten an error message related to
> > USB that I thought was fatal but it must have been just a warning.
> > Now all is well - can connect to the internet in 5 seconds.
> >
> > Frank

Joel - you are right -

This site http://wgamer.com/devicedir/device-137 says the chipset in
the SCP 8100 is a Qualcomm MSM6050 chipset.

There is a diagram of the MSM6050 at
http://www.cdmatech.com/images/produ...am_msm6050.pdf which
shows (on the top right hand side under PC connectivity)something
called "UART3/USB".

The 6050 is said to contain both a QDSP4000 core as well as an
ARM7TDMI core.

Looks like a serial port FIFO emulated in USB. Or maybe dual
function.

By the way, the "R-UIM" is for removable user identity module, which
is the smart card module, says this link
http://www.cdmatech.com/solutions/pdf/r-uim.pdf

Based on the above, I would guess that the SC8100 emulates a USB
modem.


Anyway, to get this thing going on a PDA without a USB host interface
would take some doing - unless the "normal" UART can also be used to
send modem command and transfer async serial data like a good old
RS232 modem.


"Joel Kolstad" <[email protected]> wrote in message news:<[email protected]>...
> picnic <[email protected]> wrote:
> > Anyone with 8100 data cable spot a bulge? Huh? Huh?
>
> No bulges; it's just 'wires' on the 8100 data cable.
>
> Even inside of the 8100, I'd be surprised if there's a separate USB->RS-232
> chip. Although a PC sees the phone as a USB serial device, I'm willing to
> bet a nickel that those serial packets going over USB just end up in a
> directly accessed FIFO somewhere and never turn into anything remembering a
> real serial bitstream.
>
> ---Joel Kolstad