Hi Heath,
I entirely agree it would be great if this could be done within the box. My documentation says:
"@ENUM>: Meaning making a VoIP SIP direct call via E.164 number (“ENUM”) to an ENUM callee. Electronic Number (ENUM) uses the DNS (Domain Network System) based technology to map between a traditional phone number (PSTN) to an Internet addresses/ SIP URL. The ENUM number must be registered via a public ENUM site or your VoIP Service Provider."
However, this functionality does not exist in the version of firmware I have. I'm going to raise this with Billion UK, I'll let you know if anything useful comes back.
Billion also provided me a set up guide for VoIP when I bought the box. There is nothing specifically this documentation about ENUM but there is a reference:
VoIP Dial Plan and CLI Guides:
Billion Product Support Forums -> VoIP
I cannot access this link as I'm based in Europe ( site seems to be for Billion Australia users only ) but it might be worth a look to see if there is anything on this forum link which may help.
I'll let you know if Billion UK come up trumps.
Best regards
Grahame