It depends on how you look at it... most will say there is no difference... but last I checked you usually don't run heavy apps on a softswitch.

FreeSWITCH can be everything from softphone to softswitch and everything in between including PBX. The default config comes configured as a PBX.

/b

On Feb 28, 2009, at 9:47 AM, Fred wrote:

Hello

Even though I successfully set up an Asterisk voice server, I'm no 
telecom expert, and would like some clarification about the following things:
- What is an SIP server as opposed to a IP PBX?
- What is the different between a PBX like Asterisk and a softswitch?

Thank you.