I'm still a fair amount of a noob when it comes to asterisk, so I've been looking around for some cheaper alternatives for Caller ID spoofing before my asterisk skills improve, and/or the Truth in Caller ID Act ends up passing and ending all our (harmless) fun.
I was poking around some VoIP blogs and discovered zenofon.com, they bill themselves as a dial in long distance service with ringback from a toll free number and a few other bells and whistles, however the thing they don't seem to be advertising is the fact that you can set your outgoing caller ID on their web interface! Their rates are fairly good, 1 cent per minute to most US desinations. They also have international calling fairly cheap.
There is one *HUGE* thing to look out for, which is that their rates to call a few exchanges (mostly google voice) are listed at $100 per minute. I'm not sure if this is a mistake or if they are trying to pull a fast one there.
Anyway, they are open by referel only and you get $1 trial credit for signing up. Here is a link to sign up: http://www.zenofon.com/?CWSVP
I've tried it out a bit just using the $1 credit, and despite being a bit put off by their rates to call google voice, it seems fairly good. It's sure as hell the cheapest spoofing service out there.
Edited by Skunkworks, 02 October 2009 - 01:07 AM.