The Cisco WRP400 Wireless-G Broadband Router with 2 Phone Ports is now obsolete (past End-of-Life and End-of-Support status).
End-of-Sale Date: 2017-03-18
End-of-Support Date: 2018-03-31
Cisco's End-of-Life Policy
You can view a listing of available Cisco Small Business Voice Gateways and ATAs offerings that best meet your specific needs
If you want support information for the Cisco WRP400 Wireless-G Broadband Router with 2 Phone Ports documentation, it may be available through Cisco.com Search or in the Cisco Community