Re: setting up ZTE CDMA Technologies MSM idProduct 0x2000

[Rick Jones <rick activeservice co uk>]

You need to mode-switch it before it will do anything. Initially it emulates a CD-ROM only (an idea called ZeroCD), which in Windows makes it autorun the software installer. The installed s/w then switches the modem to a different idProduct, and all its real interfaces become visible. This is not much use in Linux!

Does your device appear as a CD-ROM in Linux? If so then "ejecting" it should switch the modes. Otherwise look for usb_modeswitch on the net, download and follow the instructions - it will be able to send the magic string to the modem to switch it.

Useful hint: The mode switch needs to be done everytime you plug it in, but you can permanently switch off ZeroCD once you've got it going. You need to send it the command AT+ZCDRUN=8 on the modem port - it's usually easiest to do this using minicom or similar. This makes life simpler, and the device is also quicker to start up.

--On Tuesday, September 01, 2009 07:35:44 -0400 "Peter F. Patel-Schneider" <pfps alcatel-lucent com> wrote:

> Hi:
> 
> I have a "ZTE CDMA Technologies MSM" USB device that I'm currently
> trying to set up.  It is on the Rogers network in Canada (which is one
> of the known CDMA providers).  However the device doesn't work for me.
> 
> I did a lsusb and noticed that there appears to be only one interface,
> to the built-in ROM that holds the drivers for Windows, and no interface
> for anything else.  So I thought that something was very broken.
> 
> However, I then noticed /lib/udev/rules.d/77-nm-zte-port-types.rules,
> which appears to fix this problem for many versions of the device.
> Unfortunately my device has idProduct ox2000, which is not on the list.
> The device is labelled "Rogers Mobile Internet" and is too high to
> nicely attach to vertical USB connections on the side of a laptop.
> 
> Does anyone know what to add to the above file for this particular
> device?  Or is there something else that needs to be done?
> 
> Peter F. Patel-Schneider
> Bell Labs Research
> 
>