The modem is a d-link hsupa 3.75g dwm-156 . Documentation is here: Documentation
When I try:
root@kali:~# kal -s GSM900 -v No supported devices found.
In this page there some AT commands may be useful AT Commands
In the documentation says it supports GSM850-900 bands and greater.
My system: Linux kali 3.18.0-kali3-amd64 #1 SMP Debian 3.18.6-1~kali2 (2015-03-02) x86_64 GNU/Linux
