I-SPL, enikezelwa yi-SMTB kunye ne-SPEEDLINK, ayisiyiyo kuphela uhlobo olomileyo lomenzi we-transformer kunye nomthengisi, kodwa kunye noprofesa kurhwebo lwehlabathi, ukuxhasa ukuhanjiswa kwe-im-export eyahlukeneyo, indlela yokuhlawula kunye ne-inshurensi. Singakunika izisombululo zoguqulo olugqibeleleyo ukuba unesidingo.