[NTLUG:Discuss] pppd troubleshooting

[. Daniel]

Here's the scenario:

I've got this EVDO card from work.  Initially I set it up under Windows.  
It works, so it should be fine here [under Linux] too.  It's not, so I'll 
do my best to detail what I have found.

Upon hot-plugging the PCMCIA device into the machine, the hardware was 
correctly identified and appropriate modules were loaded.  In this case, 
"usbserial" and "airprime."  Two serial devices are created as 
"/dev/ttyUSB0" and "/dev/ttyUSB1" where ttyUSB0 is the modem device.  As 
root, I can talk to the device, but as a user, I cannot.  It would be good 
to be able to talk to it as non-root, but that's fine for now, but it did 
slow my progress for an hour or longer as I had to figure out that it was 
"root access only" before I could gain access to the modem device on 
ttyUSB0.

Once I learned I needed to run all access to /dev/ttyUSB0 as root, I was 
able to run wvdialconf and all that as documented here:

http://www.cs.drexel.edu/~kfu22/evdo/

Pretty much everything works as evidenced by the logs I have attached.  
(Hope I can attach text files with this email, else, I will follow up with 
a second email with cut-n-paste.)  The problem now is that while I can ping 
the gateway, I cannot route beyond that.  My guess is that there might be 
some sort of authentication that isn't being addressed.  But perhaps some 
fresh eyes on the problem could reveal something I haven't yet noticed?

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