800 numbers

Any suggestions apart from Real PBX, ringba, freedomvoice, evoice, Vonage. Some of the features i am looking for are *Live Call Queue *Call forwarding *unlimited minutes *Tollfree/DID numbers availability *Servers uptime

I recently got into the phone sex industry and been looking to make my own company. In my country (which is in Latin America) nobody has exploited this idea and well we know there are horny dudes everywhere. Can anyone en light me on how their system works? I mean, how do you bill clients and...