Trying to get the Verizon USB760 to work reliably with the ts-7400.
Here's what I've found:
o It's a "zerocd" device. To prevent Windows from prematurely
discovering the serial port and doing something stupid like assigning it
to a mouse driver, the serial port is initially invisible upon
insertion. Only their flash drive is visible, and it's an autorun
program which installs VZAccess.
o To cause it to appear, you either need to eject the flash drive
(which I've had no luck doing -- I can't even get it to mount in the
first place), or you need to run usb_modeswitch (not packaged in Debian
Sarge, so compile it from source) like this:
usb_modeswitch -v 0x1410 -p 0x5030 -V 0x1410 -P 0x6000 -M
"5553424312345678000000000000061b000000020000000000000000000000"
o That causes four new ports to become visible (use "lsusb -v" to see
them). They can be turned into serial ports using usbserial as so:
modprobe usbserial vendor=0x1410 product=0x6000
o Because Debian Sarge is using devfs, not udev, they appear
at /dev/usb/tts/[0-3]. The first one is the modem serial port.
o I need to "modprobe ppp_async" otherwise PPP doesn't know how to
talk to a serial port.
o I can connect to the modem using minicom, and dial, and then I can
start ppp using: pppd /dev/usb/tts/0 115200 noauth
o I can also connect using:
pppd /dev/usb/tts/0 115200 noauth connect "chat -v -T '#777'
-f /etc/chatscripts/pap"
Unfortunately (you KNEW there was an "unfortunately"), I am having two
killer problems:
o I can't ping the remote PPP peer -- it crashes the ts-7400.
o The USB760 is only visible if I physically plug it in -- never on a
boot or reboot.
Any advice / hints?
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