This tutorial will outline how to connect your Linux machine (probably not distro-specific, but this was tested and created using Ubuntu 7.04) to dial-up networking via a Treo 700p Smart Phone. This method uses USB connection and requires a data plan with your service provider. I use Sprint as they have the cheapest unlimited data plan.
In speed tests over the last few days here I have achieved ~350+kbps up and down speeds. This actually beats some residential DSL speeds that I’ve seen. Not bad. Now for the good stuff…
There are two sections of this tutorial. The first is preparing the phone to share connection to the computer. The second is telling the computer how to connect to the phone. Neither are terribly complicated, just make sure you follow the steps carefully.
Step 1 : Configuring the Treo 700p
From what I understand Sprint changed something since the Treo 650 and now require you to pay extra to share a data connection to your computer. We, of course, don’t want to do that so we’ll use a small piece of third party software to help us share this connection. This application, which you’ll need to install to your Treo 700p is called USB Modem.
I should note that this is not free software and is for-pay software, neither are points that I’m thrilled about but when there aren’t any other tools for the job… (anyone want to reverse engineer some Palm code?)
There is a free trial of that application that will run for 14 days or 30 connections. I’d suggest using the trial to initially set this up and if you find that its something you use go ahead and pay the $24.95 for the full version.
In any event, you’ll want to download the USB Modem application and install the .prc file to your Treo 700p. This tutorial will not outline installing or syncing your PDA. This assumes you already have a method of doing that. Remember to install the application to your phone itself and not a memory card.
After installing the USB Modem application navigate to it on your phone, but do not yet ‘Enable Modem Mode’. We’ll do that in a minute.
Step 2 : Configuring the Linux machine
I should note before I dive into this section that the USB Modem archive also includes instructions for setting up Linux, OS X and Windows. If you have trouble you might want to double check those instructions for more details.
On Ubuntu 7.04 (yet untested on other distributions) you need to manually add a kernel module for the Smart Phone syncing to be properly recognized. You can do this manually (not persistent) by using the command:
sudo modprobe visor
If you would like to make this persistent, which is something I have done, you will want to append a line “visor” to the end of your /etc/modules file. This way the kernel will be watching for a Smart Phone / PDA connection. If you don’t make it persistent you’ll, of course, need to do it manually each time you plan on connecting.
In my situation, using Sprint and an EVDO network, my connection does not require any kind of username and password to connect to the data network. This simplifies the steps a bit, but if your provider needs such information it isn’t too much different. Please refer to the USB Modem instructions for where to add your username and password.
The first step (and simplest way I found to connect) is to copy the connection script from the USB Modem archive to your /etc/ppp/peers/ directory. I used this command (assuming you’ve unzipped the archive to your Desktop):
sudo cp ~/Desktop/drivers/linux/ppp-script-evdo-template /etc/ppp/peers/ppp-script-treo
After you have copied the EVDO template file to the location above you should be ready to make your connection. note: I had to close existing connections (eth0, wlan0, etc) for this to work. Can anyone else verify this?
At this point you’ll want to reach over to your Treo 700p and “Enable Modem Mode”. If you’d like to see that the machine is recognizing your phone you could take a look at /var/log/messages.
Now that the phone is set to “Modem Mode” run the following command on the Linux machine:
sudo pppd /dev/ttyACM0 call ppp-script-treo
This will post some output to the screen and tell you whether or not you’re connecting. If you are assigned a remote and local IP plus primary and secondary DNS you’re most likely connected. You should get your prompt back at this point. Try pinging a location to verify your connection.
ping -c3 google.com
If your ping works you’re set. Enjoy your ppp connection over your phone. Internet wherever you have phone service. w00t! If it didn’t work please leave a comment and we’ll see what we can do for you. (chances are differences in providers, EVDO vs EDGE, etc).
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