Swiss regulators the Federal Communications Commission (ComCom) and the Federal Office of Communications (Ofcom, also known as Bakom) have announced plans for the exchange of mobile frequencies in the 900MHz and 1800MHz band that were reallocated through the February 2012 spectrum auction. Under the plan the nation’s trio of wireless network operators, Swisscom, Orange Switzerland and Sunrise, will carry out the exchange of frequencies between 21 July and 16 August with assistance from Ofcom. The work will be carried out at night to minimise disruption to users, although brief, localised interruptions to service are still expected. According to TeleGeography’s GlobalComms Database, in February 2012 ComCom unified its spectrum licensing, auctioning all unused spectrum as well as those frequency allocations that were due to expire in 2013 and 2016. As a result of the sale, all of Switzerland’s telecoms spectrum rights for the 800MHz, 900MHz, 1800MHz, 2100MHz and 2600MHz bands will be up for renewal in 2028. With the cellcos’ existing 900MHz and 1800MHz concessions having expired at end-2013, ComCom and Ofcom have arranged for the trio to exchange their old frequencies for those won in 2012 to ensure as smooth a transition as possible.