公开(公告)号：US20140016634A1

公开(公告)日：2014-01-16

申请号：US14021828

申请日：2013-09-09

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Richard L. Khan ,  Chaoxin Qiu ,  Robert F. Dailey

IPC: H04L29/08

CPC classification number: H04L67/18 ,  H04L12/66 ,  H04L29/08657 ,  H04L61/1529 ,  H04L65/1096 ,  H04W4/02 ,  H04W4/90 ,  H04W48/04 ,  H04W64/00

Abstract: An example method stores a nomadic service designator and an operating mode designator in association with a public user identifier. The nomadic service designator indicates whether an IP device is allowed to access VoIP services from different network locations. The public user identifier facilitates establishing a call with the IP device. The operating mode designator indicates when the IP device is in a suspended operating mode and an unrestricted mode. The suspended operating mode restricts the IP device to a subset of communication services associated with a service subscription of the IP device, and to a 911 service. The unrestricted operating mode is based on a registered geographic location associated with the IP device being a current geographic location of the IP device, and is based on a service provider being able to provide an E911 service including a location-identification service at the current geographic location of the IP device.

Abstract translation: 示例性方法存储与公共用户标识符相关联的游牧服务指示符和操作模式指示符。 游牧服务指示器指示是否允许IP设备从不同的网络位置接入VoIP服务。 公共用户标识符有助于与IP设备建立呼叫。 操作模式指示符指示IP设备何时处于暂停操作模式和无限制模式。 挂起的操作模式将IP设备限制为与IP设备的服务订阅相关联的通信服务的子集以及911服务。 不受限制的操作模式基于与作为IP设备的当前地理位置的IP设备相关联的注册地理位置，并且基于能够提供包括当前地理位置的位置标识服务的E911服务的服务提供商 IP设备的位置。

公开(公告)号：US20130258836A1

公开(公告)日：2013-10-03

申请号：US13908611

申请日：2013-06-03

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Chaoxin Qiu ,  Robert Dailey ,  Arshad Khan ,  Jeffrey Scruggs

IPC: H04L29/06

CPC classification number: H04L65/1046 ,  H04L1/22

Abstract: According to one method for preserving stable calls during failover, during a dialog between two user endpoints, a determination is made whether a standby call processor has become operational, such as when a corresponding primary call processor is in fault. Responsive to determining that the standby call processor has become operational, a signaling protocol message is received from a requester. A determination is made whether the message includes an in-dialog signaling protocol request. Responsive to determining that the message includes the in-dialog request, a determination is made whether a call state associated with the dialog is found in memory. Responsive to determining that the call state associated with the dialog is not found in memory, a non-call terminating error response is made responding to the in-dialog request. The non-call terminating error response may cause the requester to terminate the in-dialog request but not terminate the dialog.

Abstract translation: 根据用于在故障切换期间保持稳定呼叫的一种方法，在两个用户端点之间的对话期间，确定备用呼叫处理器是否变得可操作，例如当相应的主呼叫处理器处于故障状态时。 响应于确定备用呼叫处理器已经可操作，从请求者接收到信令协议消息。 确定消息是否包括对话信令协议请求。 响应于确定消息包括对话请求，确定是否在存储器中找到与对话相关联的呼叫状态。 响应于确定与存储器中没有找到与对话相关联的呼叫状态，响应对话请求而产生非呼叫终止错误响应。 非呼叫终止错误响应可能导致请求者终止对话请求，但不终止该对话。

公开(公告)号：US20130077487A1

公开(公告)日：2013-03-28

申请号：US13682131

申请日：2012-11-20

Applicant: AT&T Intellectual Property I, L.P.

Inventor： James E. Jackson ,  Chaoxin Qiu ,  Mehrad Yasrebi

IPC: H04L12/56

CPC classification number: H04L65/1073 ,  H04L12/66 ,  H04L41/50 ,  H04L47/286 ,  H04L47/765 ,  H04L61/1511 ,  H04L61/2007 ,  H04L65/1006 ,  H04L65/1016 ,  H04L67/1036 ,  H04M7/006

Abstract: A mechanism controls global synchronization, or registration floods, that may result when a large number of endpoints in a Voice over Internet Protocol (VoIP) network such as an Internet Protocol Multimedia Subsystem (IMS) come online simultaneously after a catastrophic failure. The mechanism allows the Domain Name System (DNS) infrastructure to efficiently control the overload condition by registering user end points with backup border elements, and by staggering and by randomizing the time-to-live (TTL) parameter in registrations with backup border elements.

Abstract translation: 一种机制控制全球同步或注册洪水，当互联网协议多媒体子系统（IMS）上的互联网协议语音（VoIP）网络中的大量端点在灾难性故障之后同时上线时可能导致。 该机制允许域名系统（DNS）基础设施通过注册具有备份边界元素的用户终点以及通过在备份边界元素的注册中随机分配生存时间（TTL）参数来有效地控制过载状况。