Appendix B a N and C N Matrices without Packet Discarding

rst two terms in the above expression correspond to the case in which no losses take place and n ? 1 cells are accepted from the N ? 1 sources in addition to one cell from the tagged source. In the next two terms, losses may take place with at least n cells arriving from the N ? 1 sources. The tagged source does not enter the blocked state in this case, but it may have encountered loss. Notice that the tagged customer cell may be accepted in the buuer in this case, and note that preference is given to cells which contain the EOP indicators. The fth and sixth terms refer to the case in which losses take place, but not from the tagged source which does not transmit a cell containing an EOP indictor. In this case, cells containing EOP indicators are accepted rst, and then cells are chosen randomly from the rest of the arriving cells to ll the remaining room. Finally, the last two terms denote the case in which the tagged source encounters loss and enters the active but blocked state. The tagged source does not generate a cell containing an EOP indicator in this case. In case the EOP indicator is not used for partial packet discarding, the A n and C n matrices must be modiied. A n modiies to A 0 n as given below: