In 2005, Ofcom, then telecommunications regulator in the United Kingdom, implemented functional separation of British Telecom plc (BT), separating its wholesale and retail services. BT established a division within the company, Openreach, to provide equal access to its local access network and...

Regulators in many countries have asserted that setting asymmetric mobile termination rates (MTRs) between the incumbent mobile telephony operator and its smaller rivals is an efficacious means by which to help entrants attain efficient scale. We investigate empirically the efficacy of this...