A link to documentation, on reset section:
http://www.cisco.com/c/dam/en/us/td/docs/routers/csbr/rvs4000/administration/guide/RVS4000_AG_OL-22605.pdf
If you experience extreme problems with the router and have
tried all other troubleshooting measures, press and hold the
Reset button for 10 seconds. This action restores the factory
defaults and clear all of the router settings, such as port
forwarding or a new password.
