GTP-U waa, ficil ahaan nidaam tunnel oo ku saleysan IP fudud kaas oo u oggolaanaya tuneelo badan inta u dhexeysa goobaha dhamaadka. Marka loo adeegsado UMTS, macaamil kasta wuxuu yeelan doonaa hal ama in ka badan oo tunnel ah, mid kasta oo loogu talagalay xaalad kasta oo PDP ah oo ay firfircoon yihiin, iyo sidoo kale suurtagalnimada in la helo tuneelo gooni ah oo loogu talagalay xiriirro gaar ah oo leh shuruudo tayo adeeg oo kala duwan. Su'aal: Muxuu macaamilku u isticmaali doonaa UMTS?
hal ama dhowr tunel