RT-AC88U How to hookup

[Specialist]

Hi Guys, I purchased a RT-AC88U for my daughters house in mexico. The houses are all concrete so wifi range is terrible. My problem is I don't know what configuration I should run the AC 3100 in. TelMex has supplied the house with a all-in-one modem router combination, see below it has lan ports on the back.

 

[pete y testing]

if its just to improve wifi range set the 88u to ap mode ( from its gui ) and connect from a lan port on the telmex to the wan port on the asus , you can then turn off the wifi on the telmex ( in its gui )

see
https://www.asus.com/support/faq/1005259

 

[Specialist]

if its just to improve wifi range set the 88u to ap mode ( from its gui ) and connect from a lan port on the telmex to the wan port on the asus , you can then turn off the wifi on the telmex ( in its gui )

see
https://www.asus.com/support/faq/1005259

Thank you for that..