Can Asterisk be used to build a carrier grade IM/VoIP platform based on the capabilities of SIP/RTP? When I say carrier grade, I mean, in the same league as Skype, GoogleTalk etc. Has anyone attempted this?
As far as I can tell, Asterisk is quite a scalable system, but is really meant to replace corporate PBX systems and requires an IT admin team to maintain.
This question comes up here rather regularly. The short answer is yes. The long answer is no, becasue of all the of code re-write to make it possible to support carrier level service.
Click these links for some of the recent discussion.