BUZZ-TalkTalk: rebounds as regulator piles pressure on rival BT
** TalkTalk rises 3.3 pct, rebounding off 4-year lows, after Britain's telecoms regulator says it will go to the European Commission to force rival BT to separate its Openreach broadband network
** Openreach is the division of BT Group (Other OTC: BTGOF - news) that develops and maintains the UK's main telecoms network used by providers such as Sky (Frankfurt: 893517 - news) , TalkTalk, Vodafone and BT's retail business
** TalkTalk shares have been under pressure in difficult environment for UK telcos
** Stock among top risers and most traded by average volumes onStoxx 600