NOTE: to get the Telecom firmware, you'll probably have to select model as GT-i9100T
Apparently, according to the stuff I've found on google/XDA, the T version has some special filter in it to make it more suited to the 850 band used by Telecom... whether or not this is actually true I don't know... all I know is that my T model phone works better with a T model modem in it...
Not sure if the T modems work that well on non-T phones...
Also, if you're just after a modem... try here: http://veyka.co.uk/sgs2/radios/
A whole bunch for you to choose from... and if that is not enough.. try the links in the first 5 posts from this thread at XDA
Have fun!
ps. Fairly sure the DOLP7 firmware (June 2012) uses the DOLP4 modem... as this is what I have... but again, not sure it T modems will work that well on non-T phones...



