[Asterisk-Users] sizing - conference room

[hkirrc.patrick]

dear all gurus,

i am looking into setting a fair size conference room system and would 
be most
grateful for any advise, experience, recommendation on the following:

1) what is a reasonable real world max. channels conference room that 1 
* server
can handle?  with what kinda h/w in server?
2) is it possible to have 1 conference room straddle over 2 * servers 
linked by
IAX?  if not directly, any workarounds? what kinda performance penalty 
if any?
3) is it possible to have 2 conference room on 2 * servers linked by IAX 
with
inbound participants from either * going into either conference room?  
what i
mean is which parts drain more processing resource; inbound channels? the
conference room? or pretty much 50/50?
4) is there a significant difference in terms of max. conference channels on
whether the inbound participants join from a T1 channel as suppose to a 
SIP channel?
5) if some inbound SIP participants use G.729 codecs whilst others use
G.711 either DS0 or SIP, how many G.729 license i should get for the * 
server?  how
will this affect the max. channels?
6) if network speed is the only limitation (SIP participants), how many SIP
inbound conference channels can a 10 Mbps symmetrical network handle?
7) is an * server suitable for this kinda application?

thank you in advance for your input.
gracefully yours,
patrick