How to install usb-modeswitch in Beaglebone?

Hi,

I need to install usb-modeswitch on my beagleBone to make the Huawei modem E173 work.
Please can you help me where to find this tool and how to install it?

I found the Linux version for this tool here http://www.draisberghof.de/usb_modeswitch/ but not the opkg version!

Thanks