专利汇可以提供Packet relay exchange system专利检索,专利查询,专利分析的服务。并且PURPOSE:To attain cost down of a packet relay exchange and the economization of a packet exchange network, by eliminating the need for the control means of a high level transmission control proceduce of the packet relay exchange. CONSTITUTION:In an exchange PSA, when a packet from an accommodating terminal to the other exchange PSD is received, an output path is selected in routing operation. When a selected output path is a path to a relay exchange PTS, the virtual data link used with an incoming number PSD of a packet included in a packet header PHDR is determined (e.g., TLab), the reception packet is connected to the line corresponding cue and a cue corresponding to the virtual data link. A high level transmission control procedure controlling section of the exchange PSA sets the outgoing station number of the frame and the incoming station number (PSB) of the frame to a prescribed position in the frame so that the incoming station of the frame can discriminate the virtual data link, provides and manages the status variable for the high level transmission control such as sequence number corresponding to the virtual data and link, and transmits it to lines.,下面是Packet relay exchange system专利的具体信息内容。
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