I have two ssid for my wireless network running off a Cisco 2504. I have a business SSID and a guest SSID. How can i prevent smartphones from connecting to my guest SSID. I have the guest SSID secured with WEP and my business is WPA2. I dont want employees and guest using the guest SSID on their smartphones, but guest can use their tablets and laptops. I dont want VOIP on my wireless network?