Hi @rajithanga   The setup you are trying to do will not work. You can only use one main modem/router to connect to the DSL/Phone port.   If you want to use another device to extend or boost your WiFi network, then you need to configure the old modem/router as an access point, but it needs to be connected via Ethernet cable to the main modem/router.  With this, you may need a long Ethernet cable. You may also consider getting a Mesh network or an Extender.   Check these threads for the idea. how to use an extra modem or router? Archer vr1600v as access point Let us know how it goes.   BasilDV ... View more