http://www.u-blox.com/en/wireless-modules.html (http://www.u-blox.com/en/wireless-modules.html)
LEON-G100
Quad-band GSM/GPRS module
http://www.u-blox.com/en/wireless-modules/gsm-gprs-modules/leon-gsm-module-family.html (http://www.u-blox.com/en/wireless-modules/gsm-gprs-modules/leon-gsm-module-family.html)
LISA-U2 3.75G UMTS/HSPA(+) module series
http://www.u-blox.com/en/wireless-modules/umtshsdpa-modules/lisa-u2-series.html (http://www.u-blox.com/en/wireless-modules/umtshsdpa-modules/lisa-u2-series.html)