I received this e-mail today and wanted to answer in my blog to help others with the same question:

Hello Mr. Tehrani,

I was wondering if there were a compilation of the providers of Enhanced 911 solutions for CLECS or ILECS even. If there is I would appreciate getting pointed in the right direction. Many thanks

I suggest the following companies

Intrado
Telecommunications Systems
Level 3
I am fairly certain Global Crossing has service provider E911 solutions as well but they don’t really promote it too well if they have it.