Can someone help me to complete missing information in my sip-communicator.properties

can someone explain what values should I fill in following variables inside sip-communicator.properties

org.jitsi.videobridge.SINGLE_PORT_HARVESTER_PORT=?
org.jitsi.videobridge.DISABLE_TCP_HARVESTER=?
org.jitsi.videobridge.TCP_HARVESTER_PORT=?
org.jitsi.videobridge.xmpp.user.shard.HOSTNAME=?
org.jitsi.videobridge.xmpp.user.shard.DOMAIN=?
org.jitsi.videobridge.xmpp.user.shard.USERNAME=?
org.jitsi.videobridge.xmpp.user.shard.MUC_JIDS=@. ???