asterisk users - Jun 2010 - load balance meetme

Hello wise Group,

if i plan to load balance incoming SIP Calls for MeetMe Conference to 2 or more
Server, i think it is a Problem, because each Server opened his own MeetMe
Room/Channel. Is it possible to made some interconnect the dahdi or MeetMe
Channels over many Servers? (Like PHP, it can store the SessionID in a
distributed filesystem or mysql database)
Or what is the best way, to load balance Meetme conferences?
I read abut openSIPS, thats sounds nice, but additionally  i would like a kind
of asterisk channel interconnect for better load balance.

Thanx for your help.
Daniel