We were using the GTM382W UMTS Mini-PCI Express modem from Option. As that product has been discontinued, we have switched to the GTM661W modem, which is a half size Mini PCI Express modem, in combination with an extender plate to make it fit in existing slots.
Today we are going to a) figure out which 2 of the 7 serial ports on the USB device I need for PPP resp. control connections and b) check whether the modem still accepts all the commands we are using to interrogate the modem on the control connection hop over to this site.
One wonders why these companies go through the trouble of redesigning everything for every new modem they sell. New IDs, new port allocations, new packaging.