Thanks for your comment and for highlighting this.
As a summary for others: Telnic (and Telnames) allowed people to store contact data in the DNS of their .tel domain name.
> Sounds similar to Telnic
Telnic used NAPTR records and was only available on .tel domains, NUM uses TXT and can be used on any domain name, by publishing a "_num" zone.
Telnic was also "just" for contact data. What we're trying to do with NUM is make it possible to publish any kind of data. Contact data as just one "module".