Solved! Go to Solution.
Welcome to this user forum for BT Retail, which has nothing to do with Openreach, who work for most providers,
This is a BT Retail forum only, please can you post on the TalkTalk user forum.
This is a forum for BT RETAIL customer and has no connection to openreach. You need to go back to TT and get them to sort it out
sounds like extension wiring not connected to connections 2&5 in your new master