I am not 100% sure but I see some key in the log. And if it is then you can encrypt the xml file. If not what you can do is to delete the keys. But you can get the Vonage configuration with LMMC tool so you can get the VOnage setting and put back with plane text xml.
If you have the tool, log in to your router with password router/router and export the configuration. Use LMMC tool to unzip it and you have plane text xml of router and voice settings.
