pacity, peaks of traffic of the order of the maximum available physical bandwidth with a very low packet rejection probability. Telecommunication Networks Thus, it can be said that thanks to the low services activity and statistical multiplexing inside the ONU and the OLT, the user has the same system experience in terms of service quality and speed that he would have with deterministic TDM multiplexing and service activity equal to one with a reserved bandwidth of about 300 Mbit/s completely dedicated to point-to-point services. As a matter of fact, we have to remember that every broadcast service can be distributed in a separated broadcast channel exploiting the topology of the ODN. In our case, besides the perceived bandwidth of 300 Mbit/s, a 500Mbit/s bandwidth is also used by streaming broadcast services. The result of these calculations could change if the downstream signal is mainly consti- tuted by unicast video streaming (e.g., Video on Demand [VoD]). Increasing the VoD, it could be possible that the OLT grooming is not yet enough to maintain such a highly perceived bandwidth. However, it is to take into account that DBA can be applied not only to the upstream, but also to the downstream, and it is effectively done in several GPON designs. In the presence of several VoD channels, DBA is particularly useful, since it permits the allocation of a reserved bandwidth to the VoD service exclusively where and when it is present. We can try to quantify the effectiveness of the DBA, in the downstream, in two ways: either by maintaining the low activity bundle we have supposed at the beginning and by trying to evaluate as the user perceived bandwidth increases, or by adding to the low activity scenario, a relevant number of VoD channels and by trying to calculate the maxi- mum number of VoDs compatible with the overall performances required by the network. The first evaluation can be done with the tools of the queue theory, and it results that assuming Poison processes for the start of a call on the different serv