TCP-tolerance is an ability of real-time multimedia flow 
to optimal share network resources with the TCP. "Optimal" 
means, that both the multimedia transmission is carried out 
preserving real-time conditions (quality of service is assured) 
and TCP flows are able to use remaining bandwidth. In the 
TCP-tolerant circumstances, the utilization of bottleneck link 
is close to 100%. Typically, real-time multimedia flows are not 
TCP-tolerant, due to large bursts, which causes short-time 
increments of buffer occupancy, which are misinterpreted as 
local congestions. Because the TCP characterizes by large 
congestions-sensitivity, these bursts cause decrement of 
TCP throughput, larger than it results from the difference 
between throughput of the bottleneck link and the target 
bit rate of real-time multimedia traffic. In this article 
an analysis of TCP-tolerant real-time multimedia distribution 
in heterogeneous networks is presented. The TCP-tolerance 
was achieved using the burst control mechanism. Simulation 
analysis was carried out using the Berkeley's ns-2 simulator.