TP-Link Archer D7 - is this the wrong modem/router for FTTC? - no WAN connection

[#1]

Hope someone can give me some advice.  I've just bought a new router/modem as I was getting constant drop-outs with my Plusnet-supplied Technicolor TG582n FTTC plus BT Openreach modem.  I wanted to get 5gHz wireless, and after talking to Plusnet was told that they didn't do dual-band at the moment.  So after browsing lots of internet sites I chose the TP-Link AC 1750 ADSL2+ modem router (Archer D7)  - http://www.tp-link.com/en/products/details/cat-15_Archer-D7.html -
Supports 802.11ac standard - the next generation of Wi-Fi
Simultaneous 2.4GHz 450Mbps and 5GHz 1300Mbps connections provide a premium wireless experience
Share a printer locally and files & media with networked devices or remotely via FTP server
Ethernet WAN (EWAN) port accepts connections from cable and fiber modems via Ethernet cable
TP-LINK Tether provides the easiest way to access and manage the router on your iOS and Android devices
It is meant to be a simple plug-and-play replacement, but when I connected it all the ADSL light flashed then went out, and it said "no WAN connection".  I tried various fiddling but nothing worked.    I'm not particularly techie, so put everything back with my old set-up and thought I'd google and post on forums to see whether anybody else could advise.    Any advice would be really appreciated.  Thanks

[#2]

That one can be used with a BT modem on FTTC, LAN4 can be configured as Ethenet WAN to connect to the BT modem.  Are you trying to connect it direct to your incoming DSL?

[#3]

Thanks for the reply!  Yes I am, I thought it was a modem/router so didn't need the BT Openreach box? 

[#4]

Using it connected to the BT Modem, you may need to manually switch it to 'Wireless router mode' , see page 100 of the manual

[#5]

Thank you so much for the advice!  Going offline now to set it all up again but I'll report back, in case anybody else has this issue  

[#6]

Quote from: Caagh

I thought it was a modem/router so didn't need the BT Openreach box?

Yes, it is a modem/router but the modem is only ADSL2+, for direct DSL connection on FTTC you need a VDSL2 modem (as in the Archer V200, V900 and some others), equally, if you don't mind using the BT modem then you could use the non-modem version of the C7: http://uk.tp-link.com/products/details/cat-9_Archer-C7.html
MisterW has provided some useful information there, hope it all helps.

[#7]

So glad I posted here, thanks for the help - I'm sending the D7 back and will get the V200 instead - just shows how ignorant I am, I didn't know I needed VDSL.  Thanks again!