Please can someone tell me in plain English whether or not there is a tp-link mesh router I can use with landline phones?

I am currently using an Archer C80 AC1900 as an extender for my BT Buissness Hub which is in bridge mode but I can't find any way to get the landline to work with it. 
 

To try to solve it I purchased an Archer VX1800v as it specifically states that it works with phone line connection but I have just discovered that it can't be used as an extender for the BT hub and therefore is useless to me. 
 

Are there any routers out there that I can use as range extenders and still have my landline telephones in use? 
 

Many thanks!