In order to deploy an I2 solution, a VSP will need to implement a method for gathering and validating subscriber addresses as close to real-time as possible, establish connectivity from their call server or their SIP Server to a VoIP Positioning Center, and obtain access to nationwide selective routers. Potential implementation partners should provide VSPs with real-time address validation and geocoding, as well as selective router access; these capabilities ensure VoIP E9-1-1 calls are routed directly to PSAP dispatchers (vs. PSAP administrative lines).

By selecting an implementation partner who is an active participant in the development of E9-1-1 standards, VSPs can also enjoy the benefits of future-proof solutions that conform to industry (and possibly regulatory) standards. And since VSPs need PSAPs to be willing partners in the implementation process, potential implementation partners should demonstrate that they have earned the respect and trust of the PSAPs community. Finally, VSPs should select a provider with proven experience in implementing end-to-end solutions that support mobile subscribers.