With SIP remote worker, there a re a few things that need to be done, prior to anything working. If using TLS, you need a certificate (Here we created a 3rd party certificate for IP Office).
Once the certificate is set, you need some settings in the IP Office. Once those are set, your 46xxsettings.txt file should auto-generate.
Here are the settings for the IP Office:
Equinox Client Setup. Now you can configure the equinox client. if you need to configure Spaces, see this thread (Automate Spaces Install).