IP Authentication is a method by which your SIP Endpoints can authenticate with VoicePulse without using a username/password. This is often necessary when you operate a SIP gateway (such as Asterisk, Avaya or Cisco).
Configuring a SIP Endpoint to use IP Authentication is straightforward - just enter the public IP address in the SIP Endpoint Create or Edit page, and make sure the "Use IP Authentication" checkbox is selected. You cannot use a private IP address for IP Authentication.
When you configure a SIP Endpoint to use IP Authentication, note that anyone who can originate traffic from the IP address you configure can initiate outbound calls on your account. You should not use IP Authentication in an environment where you are sharing a public IP address with other users.