Trunk Group Registration binds an endpoint to a specific trunk and configures the authentication settings. This can be found in any Trunk Group trunk group by selecting the Registration option on the drop-down list that shows the IP Address options by default, as shown in the image below.
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A user can register an IP address to bind to the Registration registration or use network masks to whitelist a range of IPs by entering a mask alongside the IP, such as 192.168.1.0/23. The valid masks would therefore be from 22 to 31. During the registration process, if an IP was configured, the platform will verify the registration request is coming from the appropriate IP.
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