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公开(公告)号:US06463477B1
公开(公告)日:2002-10-08
申请号:US08722512
申请日:1996-09-27
IPC分类号: G06F1516
CPC分类号: H04Q11/0478 , H04L2012/5658 , H04L2012/567
摘要: A method, system and computer program product is provided which automatically detects multiprotocol encapsulation in a protocol data unit (PDU) to determine whether a Frame Relay/ATM service interworking function should operate in translation or transparent mode. A multiprotocol encapsulation detection module first reads a control field value in a received PDU. The control field value is then compared to a predetermined value representative of the presence of multiprotocol encapsulation in the PDU. An indication of the detected presence of multiprotocol encapsulation in the PDU is then provided when the control field value equals the predetermined value. An FR/ATM service interworking function module is then operated in translation mode when multiprotocol encapsulation has been detected and indicated. Otherwise, the FR/ATM service interworking function module is operated in transparent mode when multiprotocol encapsulation has not been detected.
摘要翻译: 提供了一种方法,系统和计算机程序产品,其自动检测协议数据单元(PDU)中的多协议封装,以确定帧中继/ ATM服务互通功能是否应以翻译或透明模式运行。 多协议封装检测模块首先读取接收到的PDU中的控制字段值。 然后将控制字段值与表示PDU中存在多协议封装的预定值进行比较。 然后当控制字段值等于预定值时,提供检测到PDU中多协议封装的存在的指示。 当检测并指示多协议封装时,FR / ATM服务互通功能模块随后以翻译模式运行。 否则,当未检测到多协议封装时,FR / ATM业务互通功能模块以透明模式运行。