Narrowband applications using ATM switching and transport
    2.
    发明授权
    Narrowband applications using ATM switching and transport 有权
    使用ATM交换和传输的窄带应用

    公开(公告)号:US06775266B1

    公开(公告)日:2004-08-10

    申请号:US09353135

    申请日:1999-07-14

    IPC分类号: H04L1228

    摘要: ATM is used as a transport and switching mechanism in a hybrid STM/ATM network (20), while the signaling remains normal narrowband signaling. The narrowband signaling is transported on permanent paths over ATM connections, and the narrowband speech channels are transported on ATM and switched on a “per call basis” (on-demand) through an ATM switch. The hybrid STM/ATM network has an access node (22) which services narrowband terminals and which generates a signaling message in connection with call setup. A translator (50) formats the first signaling message into ATM cells so that the first signaling message can be routed through an ATM switch (40) to a circuit switched (STM) node (30). The circuit switched node (PSTN/ISDN) sets up a physical connection for the call and generates a further signaling message for the call, the further signaling message pertaining to the physical connection. The ATM switch routes an ATM cell-formatted version of the further signaling message to another ATM switch over an ATM physical interface (41). Thus, the ATM switch switches both narrow band traffic and signaling for the call over the ATM physical interface.

    摘要翻译: ATM用作混合STM / ATM网络(20)中的传输和交换机制,而信令保持正常的窄带信令。 窄带信令通过ATM连接在永久路径上传输,窄带语音信道在ATM上传输,并通过ATM交换机以“每呼叫”(按需)开启。 混合STM / ATM网络具有服务于窄带终端的接入节点(22),并且生成与呼叫建立相关的信令消息。 翻译器(50)将第一信令消息格式化成ATM信元,使得第一信令消息可以通过ATM交换机(40)路由到电路交换(STM)节点(30)。 电路交换节点(PSTN / ISDN)为呼叫建立物理连接,并为呼叫生成另一个信令消息,即与物理连接相关的进一步信令消息。 ATM交换机通过ATM物理接口将另一信令消息的ATM信元格式版本路由到另一个ATM交换机(41)。 因此,ATM交换机通过ATM物理接口切换窄带业务和用于呼叫的信令。