Client computers can connect to any available server computer and start or join {HEAD ~ a conference} hosted on {TAIL ~ either the server computer} to which the client computer is connected or any other server in the system 
Client computers can connect to any available server computer and start or join { HEAD ~ a conference } hosted on { TAIL ~ either the server computer } to which the client computer is connected or any other server in the system
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH