source: [lemma=up] □ □ □
destination: [lemma=up] [□] □ □
spec: Multiple communications through one-and-same path : When multiple traffics are carried through one-and-same path in the network as in case of stream delivery , it may occur that bursty traffics in each of communications are summed up readily going beyond the available bandwidth . The series of education programs for the local Native American community will include master classes for grades seven to 12 , a classroom concert for elementary students and a free community concert .