Over the past couple of months we have seen a very small number of TalkTalk lines not log back in to us after maintenance or outages within the TalkTalk network. In these cases we need to involve TalkTalk staff to manually clear the stuck session.The cause of this problem has been down to some of TalkTalk's routers being unable to cope with the high number of reconnects after an outage has been fixed or planned work has been completed.
To solve this problem, TalkTalk are upgrading the software in these routers. They expect to have updated all their routers within a couple of weeks.
TalkTalk have very nearly finished the upgrades that prevent these stale sessions from happening, we don't expect this to be a problem anymore.