O2User: BT Openreach UK Replacing Faulty FTTC Superfast Broadband Modems BT Openreach UK Replacing Faulty FTTC Superfast Broadband Modems ================================================================================ O2URSS on 27 January, 2012 12:44:36 UK telecoms operator BT has been forced to send out replacements for its superfast broadband FTTC (VDSL2) modems (Huawei EchoLife HG612) after an overheating fault was discovered that could result in a "total loss of service".