In this paper we introduced the three node communication model with feedback for the first and second nodes assuming where every arrival makes homogeneous Poisson process one of the possible decisions by forwarding to the next node or to return back to nodes without taking service. Assuming such a decision to be entirely governed by the queue at the instant of the arrival, the transient solution is obtained using difference–differential equations; probability generating function of the number of packets in the buffer connected to the transmitter the System is analyzed. The dynamic bandwidth allocation policy for transmission is considered. The performance measures of the network like, mean content of the buffers, mean delays, throughput, transmitter utilization etc. are derived explicitly under transient conditions.