ATM-based distributed virtual tandem switching system
    1.
    发明授权
    ATM-based distributed virtual tandem switching system 失效
    基于ATM的分布式虚拟串联交换系统

    公开(公告)号:US06169735A

    公开(公告)日:2001-01-02

    申请号:US09287092

    申请日:1999-04-07

    IPC分类号: H04M700

    摘要: An Asynchronous Transfer Mode (ATM)-based distributed virtual tandem switching system is provided in which a network of ATM-based devices is combined to create a distributed virtual tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual connections. The system also includes a trunk interworking function (T-IWF) device and a centralized control and signaling interworking function (CS-IWF) device. The trunk interworking function device converts end office voice trunks from TDM channels to ATM cells by employing a structured circuit emulation service. The centralized control and signaling interworking function device performs call control functions and interfaces narrowband signaling and broadband signaling for call processing and control within the ATM switching network. Consequently, the ATM based distributed virtual tandem switching system replaces a standard tandem switch in the PSTN.

    摘要翻译: 提供了一种基于异步传输模式(ATM)的分布式虚拟串联交换系统,其中组合了基于ATM的设备的网络以创建分布式虚拟串联交换机。 该系统包括动态建立单独的交换虚拟连接的ATM交换网络。 该系统还包括中继互通功能(T-IWF)设备和集中式控制和信令交互功能(CS-IWF)设备。 中继互通功能设备通过采用结构化电路仿真服务,将终端办公语音中继从TDM信道转换为ATM信元。 集中控制和信令互通功能设备对ATM交换网内的呼叫处理和控制进行呼叫控制功能和接口窄带信令和宽带信令。 因此,基于ATM的分布式虚拟串联交换系统取代了PSTN中的标准串联交换机。

    Virtual tandem switch
    3.
    发明授权
    Virtual tandem switch 失效
    虚拟串联开关

    公开(公告)号:US07099311B2

    公开(公告)日:2006-08-29

    申请号:US10024182

    申请日:2001-12-21

    IPC分类号: H04L12/66 H04J3/22 H04J3/16

    摘要: An Asynchronous Transfer Mode (ATM)-based distributed virtual tandem switching system is provided in which a network of ATM-based devices is combined to create a distributed virtual tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual connections. The system also includes a trunk interworking function (T-IWF) device and a centralized control and signaling interworking function (CS-IWF) device. The trunk interworking function device converts end office voice trunks from TDM channels to ATM cells by employing a structured circuit emulation service. The centralized control and signaling interworking function device performs call control functions and interfaces narrowband signaling and broadband signaling for call processing and control within the ATM switching network. Consequently, the ATM based distributed virtual tandem switching system replaces a standard tandem switch in the PSTN.

    摘要翻译: 提供了一种基于异步传输模式(ATM)的分布式虚拟串联交换系统,其中组合了基于ATM的设备的网络以创建分布式虚拟串联交换机。 该系统包括动态建立单独的交换虚拟连接的ATM交换网络。 该系统还包括中继互通功能(T-IWF)设备和集中式控制和信令交互功能(CS-IWF)设备。 中继互通功能设备通过采用结构化电路仿真服务,将终端办公语音中继从TDM信道转换为ATM信元。 集中控制和信令互通功能设备对ATM交换网内的呼叫处理和控制进行呼叫控制功能和接口窄带信令和宽带信令。 因此,基于ATM的分布式虚拟串联交换系统取代了PSTN中的标准串联交换机。

    ATM-based distributed virtual tandem switching system
    4.
    发明授权
    ATM-based distributed virtual tandem switching system 有权
    基于ATM的分布式虚拟串联交换系统

    公开(公告)号:US06219348B1

    公开(公告)日:2001-04-17

    申请号:US09562725

    申请日:2000-05-01

    IPC分类号: H04L1266

    摘要: An Asynchronous Transfer Mode (ATM)-based distributed virtual tandem switching system is provided in which a network of ATM-based devices is combined to create a distributed virtual tandem switch. The system includes an ATM switching network that dynamically sets up individual switched virtual connections. The system also includes a trunk interworking function (T-IWF) device and a centralized control and signaling interworking finction (CS-IWF) device. The trunk interworking function device converts end office voice trunks from TDM channels to ATM cells by employing a structured circuit emulation service. The centralized control and signaling interworking function device performs call control functions and interfaces narrowband signaling and broadband signaling for call processing and control within the ATM switching network. Consequently, the ATM based distributed virtual tandem switching system replaces a standard tandem switch in the PSTN.

    摘要翻译: 提供了一种基于异步传输模式(ATM)的分布式虚拟串联交换系统,其中组合了基于ATM的设备的网络以创建分布式虚拟串联交换机。 该系统包括动态建立单独的交换虚拟连接的ATM交换网络。 该系统还包括中继互通功能(T-IWF)设备和集中式控制和信令交互功能(CS-IWF)设备。 中继互通功能设备通过采用结构化电路仿真服务,将终端办公语音中继从TDM信道转换为ATM信元。 集中控制和信令互通功能设备对ATM交换网内的呼叫处理和控制进行呼叫控制功能和接口窄带信令和宽带信令。 因此,基于ATM的分布式虚拟串联交换系统取代了PSTN中的标准串联交换机。