摘要：
In this paper we reconsidered several pricing policies in the network industry and compared the advantages of
some (five) policies on other policies from point of views of the monopoly who considers profit maximization The
uniqueness of the network industry is that the demands for services include at least two parties, the sender of a message
and the receiver of the message. These demands that are not necessarily symmetric can be estimated very accurately using
nowadays technologies like RFID etc. by seller of the network services. Knowing the accurate demands the optimal
pricing can be determined.
