could corosync can support unicast heartbeat mode?

from another thread in serverfault, some guy raised below corosync conf:

totem {
        version: 2
        secauth: off
        interface {
                member {
                        memberaddr: 10.xxx.xxx.xxx
                }
                member {
                        memberaddr: 10.xxx.xxx.xxx
                }
                ringnumber: 0
                bindnetaddr: 10.xxx.xxx.xxx
                mcastport: 694
        }
        transport: udpu
}

is this conf type means unicast mode?

thanks,
Emre