D-Link DSL-2740R User Manual page 8

Section 1 - Product Overview
Internet A solid green light indicates the WAN IP address from IPCP or DHCP and DSL is up or a static IP address is configured and PPP
negotiation has been successfully completed. If the indicator blinks green, this means the Router is active. If the Router power is
off, this remains dark. A solid red light indicates there is no DHCP response, no PPPoE response, PPPoE authentication has failed,
and/or there is no IP.
D-Link DSL-2740R User Manual 5