I thought this would be a common thread, so I searched thoroughly before posting, but no luck. I've found a few comments here-and-there (eg- how many concurrent calls can an Atom CPU handle) but nothing definitive. Is there a link/article that discusses the scalability of 3CX on different hardware platforms? For example, using g711u (least overhead CPU-wise), all trunks internet terminated (no voice-card hardware), the total concurrent calls that can be handled under a recommended config (and what that is, for example, 3ghz dual-core, w/2gb)? Or has anyone done any side-by-side's with 3CD v Asterisk v FreeSwitch, etc? If I'm missed a previous thread/article, I apologize, but after searching quite thoroughly, I came up empty handed! Thank you in advance!