I have a Huawei E3276 LTE USB-modem and I need to force this modem to only mount as a modem when connected to the computer. Per default, the modem also mounts as a CD-drive and a USB mass storage device, which is fine when used with a computer, but a problem when connecting it to a router or similar.
What I've read so far is that you can use PuTTY or similar to connect to the modem over the COM-port, and then send AT-commands to it to configure the modem to only mount as a modem. The AT-command mentioned for most Huawei modems is
AT^U2DIAG=0 but when sending it to my modem I receive
ERROR in response, which doesn't give me much to work with.
I've also tried
AT^U2DIAG? which is said to work for some Huawei modems to display the possible values for this property, but that returns
ERROR as well.
I've tried other AT commands, like
ATI to get information about model, IMEI etc. which work just fine.
Is there some other command I can use to do this, or is there something else I need to do in order for this to work?