On the Envoy-S, verify that no Ethernet cable is plugged into the RJ45 port.

Step 1: If the router supports WPS, press and hold the WPS button on the wireless router for a few seconds. On most routers, a WPS indicator begins flashing.

Step 2: Initiate a WPS connection by pressing and holding the Envoy-S AP Mode button for 5 seconds. The Network Communications LED begins flashing green. 

How do I know it worked?

Within three minutes the Network Communications LED lights solid green, indicating a successful connection to Enlighten.