I-TNT: Phone number expansion and translation system for managing interconnectivity addressing in sip peering

Voice over ip (voip) subscribers is growing vastly in the recent years due to the ever increase in smartphones,3g,wifi,etc. this growth leads the voip service providers to peer with each other through session initiation protocol (sip) peering for low/free cost of voice communication. naturally,this growth is not without challenges,especially in phone addressing. this paper proposes an i-tnt (infrastructure-phone number translation) numbering system to expand the range of the existing e.164 numbers and mapping between private and public number at the edge of the signalling path. as a result,i-tnt numbering system is successfully implemented and able to allocate the expanded phone numbers to end-users in one service provider. © school of engineering,taylor’s university.