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    • 4. 发明授权
    • Method and apparatus for providing internet call waiting with voice over internet protocol
    • 通过互联网协议提供互联网呼叫等待的方法和装置
    • US07342919B2
    • 2008-03-11
    • US10703531
    • 2003-11-10
    • Li ZhangJeffrey P. CassanovaAlan R. BlackburnRobert B. Collicott
    • Li ZhangJeffrey P. CassanovaAlan R. BlackburnRobert B. Collicott
    • H04L12/66
    • H04L65/103H04L29/06027H04L65/1009H04L65/1026H04L65/1036H04L65/104H04L65/1043H04L65/1069H04M3/4288H04M2207/12H04M2207/203H04Q3/0025
    • An Internet Call Waiting—Voice over Internet Protocol (ICW-VOIP) service that uses a service control point and service node of a Public Switched Telephone Network (PSTN), acting as a gatekeeper and bridge respectively, to enable ICW subscribers to answer telephone calls during an internet session without having to disconnect internet access. The primary network components of the ICW-VOIP service comprise a proxy firewall, a service node, and a gateway. When a PSTN call is placed to a subscriber whose line is being used for internet access, the service control point accesses the subscriber's internet address from a database and transmits a message over the internet to the subscriber giving the subscriber the option to accept the call as a VOIP call. Once accepted, the subscriber places an H.323 call through the gateway to the service node. The service control point also forwards the PSTN call to the service node. Using bridging information, the service node matches the subscriber H.323 call and PSTN call and bridges them together to provide a VOIP connection.
    • 互联网呼叫等待 - 互联网语音(ICW-VOIP)服务,其分别用作网守和桥接器的公共交换电话网(PSTN)的服务控制点和服务节点,以使得ICW用户能够应答电话 在互联网会话期间,不必断开互联网访问。 ICW-VOIP服务的主要网络组件包括代理防火墙,服务节点和网关。 当PSTN呼叫被放置在线路用于因特网接入的用户时,服务控制点从数据库访问用户的因特网地址,并通过互联网将消息发送给订户,给订户接受该呼叫的选择 一个VOIP电话。 一旦接受,用户通过网关将H.323呼叫放置到服务节点。 服务控制点还将PSTN呼叫转发到服务节点。 使用桥接信息,服务节点匹配用户H.323呼叫和PSTN呼叫,并将它们桥接在一起以提供VOIP连接。