I need to send a technician to a decomissioned remote site with no wan connectivity to clear the configs on a Cisco 871 router and 2950 switch. Is there a button sequence to press to permanently clear the config without requiring console access? There's a reset button on the 871 but it's not clear if using it will permanently clear the config. I'm also aware of the mode button on the 2950 but, as far as I know, it still requires console access to clear the config. Thank you.