Line cord error on BT6500

Question

During the massive storm last night we were hit and since then my BT6500 single has shown the 'line cord error' message. No incoming or outgoing calls available.
I've done the online line check and BT say that there's no fault, so is it definitely the phone that's dead?
Really can't afford the £129 call out fee if it is likely to be the phone. 
(Also, if I do have to replace it, can I just get another base unit or do I have to get a whole new set up?)
Thanks

Answer 1

Try a different phone to see if it works, you can get a cheap corded phone for under £10.
Have you tried all of the tests on this page?
http://bt.custhelp.com/app/answers/detail/a_id/9812/c/345,353
If you have a single phone and base, then you will have to buy the same, but you can register the original phone to the new base, and that will give you two phones.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.