OBS_VALUE: On 30 November 2011, the former vertically integrated incumbent fixed-line provider structurally separated into a network business (Chorus) and a retail business (Spark) on a voluntary basis. The separation was undertaken in relation to the incumbent’s participation in the government’s UFB initiative. Under the Telecommunications Act 2001, Chorus must not participate in the supply of a telecommunications services at the retail level, unless the person being supplied the services uses them for own consumption up to 25% (section 69O).