In order to set up WPA Wireless Security on your Cisco Small Business VoIP router, complete these steps:
Access the router's web-based setup page. For instructions, click here.
When the router's web-based setup page appears, click Wireless > Wireless Security.
Look for Security Mode, and select WPA-Preshared Key.
Look for WPA Algorithms, and select TKIP.
Look for the WPA Shared Key field, and enter "MySecretKey" or your desired WPA key. This will serve as your network key whenever you connect to your wireless network.
Note: Do not give this key to anyone. This key will secure your wireless network. Leave Group Key Renewal set to 3600 seconds.
Reconnect to your wireless network. For instructions, click here.