Leif Madsen explains things in a manner that makes concepts easy to understand — which is probably one of the reasons we like Leif. If you’ve read Asterisk: The Future of Telephony, then you most likely already appreciate his talent; he is of course one of the authors.

Anyway, Leif posted a great article on his “Asterisk, and other worldly endeavours” blog today regarding ENUMplus and ISNs. Check the article on his blog: Musings about ENUMplus and ISNs.