I have a FIOS Quantum Gateway G1100 router connected via coax to Verizon's equipment. I picked up a WCB3000N on ebay. I plugged the coax that is usually connected to a STB to the WCB3000N. Once powered up, after a minute or two, all the lights are on. But rather than extending the existing wireless network running off the G1100, the WCB3000N seems to be creating its own wireless network (named "FIOS", while the G1100's network is "FIOS-WXYZ".
How can I get the WCB3000N to extend the existing wireless network?