Ok this has been resolved. -
Was indeed the default gateway of the device I was trying to connect to was not set to the routers IP
(partly because the device had obscure name of 'router 1' instead of 'default gateway' )
still all's well that ends well.
Device network settings need to be set to:
IP Address: 192.168.1.? (same network as the router - or change the router IP to your device, either way they have to be on the same IP range)
Subnet: 255.255.255.0 (Both router and device must be same subnet)
Default Gateway: 192.168.1.1 (the IP address of the router **important**)
Well thanks for everybody who responded help