Re: How to configure Remote Survivability on a 6355
Thanks for posting. You will likely want to work with your provider to make any changes to call routing in the unit. However, your unit will support survivability, and below is a link to a guide you may find helpful. This shows the configuration of an FXO port to be used full time for 911 calls, and a backup PSTN path when the SIP server is not reachable.