TIA invited media to attend “Network Transition: Going from the PSTN to an All Internet Protocol Network.” The panel discussion – which will take place on Friday, June 21, from 10 a.m.-noon at TIA’s headquarters in Arlington, Va. – will gather executives from leading companies to explore the effects of the switch from the public switched telephone network (PSTN) to an Internet Protocol network (IP), as well as the policy and regulatory hurdles facing the transition.