I have a Panasonic BL-C131a and Linksys EA6500. The camera works fine when wired, but it can't be accessed wirelessly. I suspect an encryption issue. The camera is set to "wpa2-psk" and the router to "WPA2/WPA Mixed Personal"< Could that be the problem?
The way to test it is to turn off the encryption temporarily and see if the camera will connect. In theory, the WPA2-PSK should work with the router's WPA2/WPA Mixed Personal setting, but some times different WiFi chipsets implement encryption just slightly different, which can cause problems. Some times temporarily turning off the encryption will allow you to establish a connection…and then maintain that connect when you turn the encryption back on. And sometimes it will only work with the encryptions left off.