asterisk users - Nov 2004 - three way mixing / conferencing

There are lots of sip phones which do not support conference calling and 
I would like to know if asterisk can support that (i.e. perform the 
mixing) on behalf of the phone?  For example if
      RTP
A <------  * ----------> B
and then C tries to call B where the B phone can support one call at a 
time, would * support:


C \
   \
    \   RTP
     \
      * ----------> B
     /
    /
   / RTP
  /
A    
   

thanks
moe smadi

m. smadi wrote:
> There are lots of sip phones which do not support conference calling and 
> I would like to know if asterisk can support that (i.e. perform the 
> mixing) on behalf of the phone?  For example if
>      RTP
> A <------  * ----------> B
> and then C tries to call B where the B phone can support one call at a 
> time, would * support:
Check the wiki for MeetMe and/or app_conference. Asterisk can conference 
as many streams as you wish, but making it work seamlessly with your SIP 
phones may be a bit tricky.