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9Jan/08Off

UIQ3 cell phone as modem via usb

I got my new Sony Ericsson P1i a few weeks ago. Because I hate it to use Windows I wanted to get it working as an usb modem under linux. In my case again under gentoo šŸ˜‰ My cell phone provider in Germany is Eplus. So if you use this with an other provider you will have to change some values of course. The cell phone itself has SymbianOS on it. The version its called UIQ3. The instructions should work for all QUI3 phones, as far as I know. I used very much sites to get this together, so I beg your pardon that I forgot which that all was.

So first check if you have the need kernel options enabled:

Device Drivers --->
USB support --->
USB Modem (CDC ACM) support

Device Drivers --->
Network device support --->
PPP (point-to-point protocol) support
PPP support for async serial ports

If you compiled the things as modules make sure to load them. (and perhaps to autload them via /etc/modules.autoload.d/kernel-2.6)

modprobe modprobe cdc-acm ppp_async

Of course we need also a ppp dialing program. I choose the normal commandline pppd, but I think this also can be done via some grapical ppp guis. But I did not tested it.

emerge ppp

There are now only 3 files need to be created. If you use a gui this will perhaps be done via that...

/etc/ppp/peers/3g

lcp-echo-failure 0
lcp-echo-interval 0
nodetach
connect "/usr/sbin/chat -f /etc/ppp/peers/3g-chat-connect"
disconnect "/usr/sbin/chat -f /etc/ppp/peers/3g-chat-disconnect"
/dev/ttyACM1
115200
crtscts
local
noipdefault
ipcp-accept-local
defaultroute
usepeerdns
novj
nobsdcomp
novjccomp
nopcomp
noaccomp
noauth
user "eplus"
password empty
mtu 1500
mru 1500

/etc/ppp/peers/3g-chat-connect

TIMEOUT 5
ECHO ON
ABORT '\nBUSY\r'
ABORT '\nERROR\r'
ABORT '\nNO ANSWER\r'
ABORT '\nNO CARRIER\r'
ABORT '\nNO DIALTONE\r'
ABORT '\nRINGING\r\n\r\nRINGING\r'
'' \rAT
TIMEOUT 12
SAY "Press CTRL-C to close the connection at any stage!"
SAY "\ndefining PDP context...\n"
OK ATH
OK ATE1
OK 'AT+CGDCONT=1,"IP","internet.eplus.de"'
OK ATD*99#
TIMEOUT 22
SAY "\nwaiting for connect...\n"
CONNECT ""
SAY "\nConnected."
SAY "\nIf the following ppp negotiations fail,\n"
SAY "try restarting the phone.\n"

/etc/ppp/peers/3g-chat-disconnect

ABORT "BUSY"
ABORT "ERROR"
ABORT "NO DIALTONE"
SAY "\nSending break to the modem\n"
"" "\K"
"" "+++ATH"
SAY "\nPDP context detached\n"

That was it! now you can easyly connect

pppd call 3g

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