asterisk users - Jul 2003 - calls per second with asterisk

Hi.
Are there any values available about the capabilities
of an asterisk system?
I'm interested (if anyone has ever measured it) in how
many calls a single asterisk server can handle
from PSTN <-> PSTN, PSTN <-> SIP, SIP <-> SIP.

Of course this is also hardware-dependant, but
let's assume an average 2GHz single-processor 
machine with 512MB RAM, 100MBit NIC and a TE410P.

What performance can I expect from such a setup?


TIA
 Rainer

-- 
http://graphics.cs.uni-sb.de/VoIP/