Data Sheet Parvus DuraMAR 31-5915 Data Sheet Download Resource Login to download this resource Username Enter your Curtiss-Wright Defense Solutions username. Password Enter the password that accompanies your username. Forgot password? Don’t have an account? Register here. The Parvus DuraMAR 31-5915 is a rugged Cisco IOS-managed mobile router designed to extend enterprise networking infrastructure beyond the reach of traditional fixed networks into mobile and embedded networking applications.