I am using voipbuster and I have the config.txt file setup like so
>>>>
# This is a comment in the config file.
# Set the URL of local ID (used in From header) (e.g.: sip:
[email protected])
--id sip:sip.voipbuster.com
# Set the URL of registrar server (e.g.: sip:example.com)
--registrar...