Why did you rename all the ast_ prefixes in the source code and AGI to OGI in the dialplan?
We wanted to make sure that we stay clear of anything that could be construed as improper use of trademarks. For the same reason we chose to rename AGI (an acronym for Asterisk Gateway Interface) to OGI, the idea is “better safe than sorry”. However, IAX is known to be safe to use as the USPTO lists it as an abandoned trademark.