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    • 1. 发明申请
    • PACKET FORWARDING APPARATUS SUITABLE FOR REAL TIME PACKETS
    • 适用于实时分组的分组装置
    • US20080175251A1
    • 2008-07-24
    • US11954132
    • 2007-12-11
    • Ken OouchiHiroaki MiyataYasuo Kogure
    • Ken OouchiHiroaki MiyataYasuo Kogure
    • H04L12/56
    • H04L12/66H04L45/04
    • In a packet forwarding apparatus including first line interfaces accommodating user terminals, a second line interface connected to a communication node on a session management apparatus side, and a protocol processing unit for updating a connection management table and a header information table when a specific session control packet is received from one of the first line interfaces. Upon receiving a real-time packet from one of the first line interfaces, if a table entry corresponding to the header information of the received packet has been registered in the connection management table, the control unit routes the received packet to one of the first line interfaces after rewriting its header information based on the header information table, and if the table entry has not been registered, the control unit routes the received packet as it is to the second line interface.
    • 在包含适应用户终端的第一线路接口的分组转发装置中,连接到会话管理装置侧的通信节点的第二线路接口,以及用于在特定的会话控制时更新连接管理表和报头信息表的协议处理单元 从第一行接口之一接收分组。 在从第一线接口之一接收到实时分组时,如果与接收分组的报头信息对应的表条目已经登记在连接管理表中,则控制单元将接收到的分组路由到第一行 接口在根据头信息表重写其头信息之后,如果表条目尚未被注册,则控制单元按原样将接收到的分组路由到第二线路接口。
    • 5. 发明授权
    • Packet transfer device and communication system
    • 分组传输设备和通信系统
    • US07936750B2
    • 2011-05-03
    • US11734354
    • 2007-04-12
    • Akihito TsuzukiHiroaki MiyataYasuo Kogure
    • Akihito TsuzukiHiroaki MiyataYasuo Kogure
    • H04L12/28
    • H04L45/00H04L45/3065H04L65/1006H04L65/80H04L67/14H04L67/146H04L67/147H04L69/164
    • In a network having an L2SW in which uplink VLAN is set, a transfer delay of a voice call packet is prevented. In a process of establishing a session between terminals (5), a packet transfer device (1) stores information capable of specifying a sending terminal (5-1) and a receiving terminal (5-2) and a correspondence relation (user connection information) to a connection port into a table. A SIP message of a session control packet communicated between the terminals (5) is snooped, and a destination IP address, a transmission source IP address, a destination port number, a transmission source port number, a connection port etc. are stored into the table. In a case where an RTP packet as voice data is received after the session is established, the packet transfer device (1) performs a loopback transfer or transfers it to an uplink port in accordance with the table.
    • 在具有上行链路VLAN的L2SW的网络中,防止语音呼叫分组的传送延迟。 在终端(5)之间建立会话的过程中,分组传送装置(1)存储能够指定发送终端(5-1)和接收终端(5-2)的信息和对应关系(用户连接信息 )将连接端口连接到表中。 窥探在终端(5)之间通信的会话控制分组的SIP消息,将目的地IP地址,发送源IP地址,目的端口号,发送源端口号,连接端口等存储到 表。 在会话建立之后接收到作为语音数据的RTP分组的情况下,分组传送装置(1)根据该表进行环回传送或将其传送到上行端口。
    • 8. 发明申请
    • PACKET TRANSFER DEVICE AND COMMUNICATION SYSTEM
    • 分组传输设备和通信系统
    • US20080013534A1
    • 2008-01-17
    • US11734354
    • 2007-04-12
    • Akihito TsuzukiHiroaki MiyataYasuo Kogure
    • Akihito TsuzukiHiroaki MiyataYasuo Kogure
    • H04L12/56
    • H04L45/00H04L45/3065H04L65/1006H04L65/80H04L67/14H04L67/146H04L67/147H04L69/164
    • In a network having an L2SW in which uplink VLAN is set, a transfer delay of a voice call packet is prevented. In a process of establishing a session between terminals (5), a packet transfer device (1) stores information capable of specifying a sending terminal (5-1) and a receiving terminal (5-2) and a correspondence relation (user connection information) to a connection port into a table. A SIP message of a session control packet communicated between the terminals (5) is snooped, and a destination IP address, a transmission source IP address, a destination port number, a transmission source port number, a connection port etc. are stored into the table. In a case where an RTP packet as voice data is received after the session is established, the packet transfer device (1) performs a loopback transfer or transfers it to an uplink port in accordance with the table.
    • 在具有上行链路VLAN的L2SW的网络中,防止语音呼叫分组的传送延迟。 在终端(5)之间建立会话的过程中,分组传送装置(1)存储能够指定发送终端(5-1)和接收终端(5-2)的信息和对应关系(用户连接信息 )将连接端口连接到表中。 窥探在终端(5)之间通信的会话控制分组的SIP消息,将目的地IP地址,发送源IP地址,目的端口号,发送源端口号,连接端口等存储到 表。 在会话建立之后接收到作为语音数据的RTP分组的情况下,分组传送装置(1)根据该表进行环回传送或将其传送到上行端口。