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The main point of ENUM was compatibility with open SIP, unfortunately that never really happened and most SIP operators do not accept incoming calls from public internet (and do not route outgoing calls based on ENUM).
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Sadly ENUM is dead or buried or both for many countries.
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I saw this lets you do Fax over IP. Any other advantages or usecases?
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I don't know if this gets much personal use, seems real cumbersome.

But this is of huge interest to carriers, since it allows them to skip the PSTN/peering cost when the callee endpoint is an IP phone.

There is private ENUM for carrier use I recall, not sure what the current status is, with LTE/VoLTE, RCS etc.pp.

http://dam3d3.free.fr/PFE/Pathfinder/GSMA_PathFinder_WebSite...

Here the list of countries that have ENUM delegated for their country code.

https://www.itu.int/en/ITU-T/inr/enum/Pages/delegations.aspx

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Time travel.
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