CN107534565A - 通过使用高度分布的代理来处理会议 - Google Patents
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Abstract
公开了用于将会议引导到本地部署的媒体代理和基于云的媒体代理的系统、方法和非暂态计算机可读存储介质。集中控制器和多个基于云的媒体代理被布置在云或其他远程或虚拟网络内，并且多个本地部署的媒体代理在本地被提供。集中控制器管理对会议的引导和转发，并与基于云的媒体代理和本地部署的媒体代理进行通信。
Description
技术领域
本技术涉及通过媒体代理来处理会议。
背景技术
诸如具有多个请求加入电话会议的呼叫者的电话会议之类的会议需要多个媒体代理(例如，MCU)来执行与多方的会议。现有的电话会议系统是本地部署(on-premise)的或云端的。很难预测会议所需的资源数量，因此公司往往被迫购买峰值容量所需的本地部署量或云容量。
附图说明
为了描述可以获得本公开的以上和其他优点和特征的方式，将通过参考其在附图中示出的具体实施例来呈现对以上所简要描述的原理的更具体的描述。应理解的是，这些附图仅描绘本公开的示例性实施例，并且因此不被认为是对其范围的限制，通过使用附图来用附加的特征和细节描述和解释本文的原理，其中：
图1示出了根据主题技术的一些方面的示例框图；
图2示出了示例方法实施例；
图3示出了示例方法实施例；
图4示出了根据主题技术的一些方面的包括在每组媒体代理的前面的负载均衡器的示例框图；
图5示出示例方法实施例；以及
图6A和6B示出了根据主题技术的一些方面的示例系统实施例。
具体实施方式
下面将详细讨论本公开的各种实施例。尽管讨论了具体的实现方式，但应理解的是，这仅是出于说明的目的。相关领域的技术人员将认识到，可以在不背离本公开的精神和范围的情况下使用其他组件和配置。
概览
用于处理会议的弹性模型包括被一起用来执行会议的多个本地部署的媒体代理和多个基于云的媒体代理。“云”或其他远程网络包括多个基于云的媒体代理和集中控制器。集中控制器接收加入会议的请求。控制器可以是基于云的，或者可以设在任何位置作为通过网络可安全到达的独立实体。集中控制器向请求者提供尝试第一连接的指令。这可能是连接到本地部署的媒体代理或基于云的媒体代理的尝试。如果未建立第一连接，则可以尝试第二连接。第一连接可能由于诸如媒体代理达到或超过容量之类的若干因素而不能建立。然后可以对本地部署的媒体代理或基于云的媒体代理进行第二连接尝试。控制器可以管理媒体代理的容量，或者stun负载均衡器可以在每组媒体代理的前端来监视媒体代理的容量。
示例实施例
计算机网络是通过用于在端点(例如，个人计算机和工作站)之间传送数据的通信链路和段互连的节点的地理分布集合。许多类型的网络是可用的，其类型范围从局域网(LAN)和广域网(WAN)到覆盖网络和软件定义的网络(例如，虚拟可扩展局域网(VXLAN))。
LAN通常通过专用私有通信链路来连接位于同一通用物理位置(例如，建筑物或校园)的节点。另一方面，WAN通常通过长距离通信链路(例如，公共承运电话线路、光学光路、同步光纤网络(SONET)、或同步数字层级(SDH)链路)来连接地理上分散的节点。LAN和WAN可以包括层2(L2)和/或层3(L3)网络和设备。
互联网是连接世界各地的不同网络的WAN的示例，其在各种网络上的节点之间提供全球通信。节点通常通过根据诸如传输控制协议/互联网协议(TCP/IP)之类的预定义协议交换离散帧或数据分组来通过网络进行通信。在这种情境下，协议可以参考定义节点如何相互交互的一组规则。计算机网络可以通过中间网络节点(例如，路由器)进一步互连，以扩展每个网络的有效“大小”。
网络虚拟化允许硬件和软件资源在虚拟网络中被组合。例如，网络虚拟化可以允许多个虚拟机通过相应的虚拟LAN(VLAN)附接到物理网络。VM可以根据它们各自的VLAN被分组，并可以与其他VM以及在网络内部或外部的其他设备进行通信。
还可以在一个或多个网络中提供云计算，以通过使用共享资源来提供计算服务。云计算通常可以包括基于互联网的计算，在基于互联网的计算中，计算资源被动态地配设并按需被从经由网络(例如，“云”)可用的资源的集合分配到客户端或用户计算机或其他设备。例如，云计算资源可以包括任何类型的资源，例如，计算、存储和网络设备、虚拟机(VM)等。例如，资源可以包括服务设备(防火墙、深度分组检测器、流量监视器、负载均衡器等)、计算/处理设备(服务器、CPU、存储器、暴力处理能力)、存储设备(例如，网络附接存储器、存储区域网络设备)等。此外，可以使用这样的资源来支持虚拟网络、虚拟机(VM)、数据库、应用(Apps)等。
云计算资源可以包括“私有云”、“公共云”、和/或“混合云”。“混合云”可以是包括通过技术互操作或联合的两个或更多个云的云基础设施。实质上，混合云是私有云与公有云之间的交互，其中私有云加入公共云并以安全和可扩展的方式利用公共云资源。云计算资源也可以通过覆盖网络中的虚拟网络(例如，VXLAN)被配设。
所公开的技术解决了本领域对于处理会议的弹性模型的需要，通过使用基于云的控制器提供针对平均和峰值带宽的足够的资源，并且在本地部署的媒体代理和/或云端的媒体代理达到最大容量时为寻求加入会议的客户端提供会议能力。公开了用于要由本地部署的媒体代理和基于云的媒体代理处理的会议的客户端的系统、方法和计算机可读存储介质。基于云的控制器接收传入的加入会议的请求，并根据多个因素(诸如资源带宽、呼叫类型、呼叫者信息和其他与呼叫相关的数据等)来选择用于处理该请求的本地部署的媒体代理或基于云的媒体代理。例如，所有要求加入会议的请求都可以去往本地部署的媒体代理，直到其达到或超出容量，然后这些会议可以由基于云的媒体代理处理，因此即使在本地部署的媒体代理已达到容量时，客户端仍可以加入会议。另一示例是第一媒体类型的会议(例如，音频会议)要由基于云的媒体代理处理，以及引导第二媒体类型的会议(例如，视频会议)由本地部署的媒体代理处理。在又一示例中，控制器具有进行下述操作的逻辑：确定哪些媒体代理更安全，并相应地将安全会议引导到安全的媒体代理。
如图1所示，本文公开了对示例性系统和网络的简要介绍性描述。随后将详细描述各种系统流程、相关概念、以及示例性变形。本文将在阐述各种实施例时描述这些变形。现本公开转向图1。
图1示出了根据本技术的一些方面的示例框图。本地部署企业110具有多个本地部署的媒体代理111、112和113。媒体代理执行媒体(例如，音频、视频和共享)分组处理操作以支持客户端参与的会议会话，例如但不限于媒体分组混合、切换、编码、解码和转码。虽然出于说明和描述的目的仅示出和描述了三个媒体代理，但应理解的是，可以使用任何数目的媒体代理来实现针对特定前提的期望的会议能力。而且，尽管仅示出了具有包括代理111、112、113的一个集群的单个企业110，但是这些技术同样适用于任何数目的企业，其中每个企业具有任何数目的媒体代理或媒体代理集群。根据本文的技术，具有多个位置(各自具有多个媒体代理并在地理上分散)的企业可以使用本文的会议系统来通过使用基于云的控制器来针对所有位置控制整体的企业会议能力。通过使用基于云的控制器来处理音频、视频和共享能力。
根据主题技术的某些方面，企业(例如，公司)可以购买针对本地部署的平均需求而非峰值需求的足够容量并购买针对峰值容量的云端容量来按需使用。以这种方式，得到许可的计算的固定容量被部署在企业本地，并且剩余容量可以由云资源提供。
会议会话(也通常被称为“会议”)可以涉及任何数目的客户端之间的对音频、视频和资源共享(例如，屏幕或应用共享)中的一个或多个的交换，以及一个参与者与一个或多个其他客户端的对内容的共享。这样的共享内容可以包括文档、演示文稿、音频内容、视频内容等。根据本文的教导，可以由基于云的控制器处理包括屏幕和/或应用共享的会议会话。因此，云控制器可以处理具有音频、视频和共享能力的会议。在至少一些实施例中，共享能力可以被编码和被处理为视频。
控制器130驻留在“云”125中，其可以是适当的数据中心。为了控制系统，控制器130通过使用由例如但不限于会话发起协议(SIP)、H323访问、名单、以及会议控制选项(包括，例如，静音、踢除等)提供的这种特征和功能来执行控制平面信号操作/功能。控制器还通过控制本地部署的媒体代理和基于云的媒体代理之间的连接来执行对会议的编排，以确保特定会议被完全连接并提供必要的音频和视频处理功能。控制器可以具有允许其根据主题技术的某些方面选择本地部署的媒体代理或基于云的媒体代理的逻辑。
云125还包括多个媒体代理121、122和123，它们是基于云的并且驻留在云125内而非本地部署。尽管出于说明和描述的目的而仅示出和描述三个媒体代理，但应理解的是，可以使用任何数目的媒体代理(除了通过使用本地部署的媒体代理之外，还通过使用基于云的媒体代理)来实现针对特定前提的期望的会议能力。以这种方式，企业可以使用本地部署的媒体代理和基于云的媒体代理来满足其会议需求，而不需要企业在本地维护足够的媒体代理以满足峰值会议需求，因为可以根据需要或根据企业用于确定控制处理这些会议的媒体代理的特定因素来使用基于云的媒体代理。
图1的系统1提供了一种动态的弹性技术，以允许最大程度地利用本地部署和云之间的资源协作。如下面将详细描述的，本文所呈现的技术动态地配置会议系统中的高度分布的资源，包括基于云的控制器、本地部署的媒体代理和基于云的媒体代理，以支持客户端发起的会议会话并将会议引导到适当的本地部署的或基于云的媒体代理。这些资源被称为“高度分布”，以描述地理上分布的资源。
为了支持这些技术，控制器130、本地部署的媒体代理111、112、113和基于云的媒体代理121、122、123通过使用各种通信协议来进行实现并与彼此交互以建立会议会话并在会议会话中交换包括数据分组的媒体流。这样的通信协议包括但不限于：交互式连接建立(ICE)协议；根据本文提供的技术被修改或扩展为使用STUN URL的用于网络地址转换/转化(NAT)的会话穿透工具(STUN)协议；用户数据报协议(UDP)；以及实时传输协议(RTP)。本文所描述的技术仅通过示例的方式使用上述协议；如相关领域的技术人员对本文给出的描述的理解，还可以使用其他类似的协议来代替所提及的协议或与所提及的协议组合使用。
本地部署的媒体代理111、112、113和基于云的媒体代理121、122、123可以是多达几万个的任何数目的媒体代理，并且可以是地理上分布在全球各地。同样，寻求加入会议的客户端可能位于世界任何地方。因此，会议系统被称为“高度分布”。对这种分布式布置的挑战是构建一个“最佳”媒体拓扑，用于通过使用本地部署的媒体代理或基于云的媒体代理将客户端分配给会议。
本文提出的技术解决了基于若干因素将客户端分配给会议的挑战。例如，企业可能希望基于在会议中交换的数据的类型来控制对媒体代理的使用。企业可能希望由基于云的媒体代理处理所有视频会议而由本地部署的媒体代理处理所有音频会议或反之，使得适当的媒体代理可以处理各种会议。作为另一示例，企业可能希望基于媒体代理的容量来简单地设置其会议能力，使得本地部署的媒体代理被首先使用，直到在本地部署不再有任何媒体代理可用，然后在本地部署的媒体代理达到容量时，可以使用基于云的媒体代理。另一示例是针对本地客户端使用本地部署的媒体代理，并针对不在本地的客户端使用基于云的媒体代理，使得本地客户端使用本地部署的媒体代理并且远程客户端使用基于云的媒体代理。另一示例是根据会议的安全性来处理会议，使得安全会议由本地部署的媒体代理处理，而非安全会议由基于云的媒体代理处理，或反之，非安全会议由本地部署的媒体代理处理，安全会议由基于云的媒体代理处理。在控制器逻辑中存在用于控制会议到本地部署的媒体代理和基于云的媒体代理的路由的若干决定。控制器逻辑可以确定哪些媒体代理是更安全的并相应地引导会议。例如，如果本地部署的媒体代理更安全，则将安全会议引导到本地部署的媒体代理，并且如果基于云的媒体代理更安全，则安全会议将引导到基于云的媒体代理。用于确定会议如何被引导到基于云的媒体代理或本地部署的媒体代理的因素可以由企业选择或由制造商预先选择，或者是根据企业的会议中的需要和期望的功能的所需更改可用的。
包括本地部署的媒体代理和基于云的媒体代理的会议系统的优点包括无限的会议能力，这意味着对参与者的数目没有限制，并且会议系统能够分别满足传统的本地部署的会议和基于云的会议的单独的以及组合(通过将两个会议机制组合到单个会议系统中)的需求。
图2示出了示例方法实施例。图2的过程开始于210，其中将多个本地部署的媒体代理注册到基于云的控制器。多个本地部署的媒体代理可以例如是图1中示出的媒体代理111、112、113，并且可以包括单个本地部署的媒体代理到驻留在企业内部的任何数目的媒体代理。在214处，多个基于云的媒体代理被注册到基于云的控制器。在216处，通常被称为“呼叫”的请求加入电话会议的传入的请求可以是请求加入会议(例如，音频或视频电话会议)的任何请求，并且由至少一个本地部署的媒体代理或至少一个基于云的媒体代理基于多个因素对其进行处理。用于控制对传入的加入会议的请求的处理的因素可以包括在本地部署的媒体代理处用于更多客户端的容量、会议的安全性、会议的媒体类型、以及本文描述的以及在相关领域中已知的涉及会议会话和会议系统的其他因素。会议可以是一般的电话会议(例如，音频或视频会议)，并且包括多媒体会议。
由基于云的媒体代理和本地部署的媒体代理对会议进行的处理可以与客户端无缝连接。存在两种引导会议的方式，第一种是控制器管理切换。第二种是由客户端和负载均衡器处理切换。
图3示出了根据主题技术的一些方面处理会议的示例方法实施例，其中控制器管理会议的切换。在本实施例中，会议由位于本地的媒体代理来处理，直到其达到最大容量，然后基于云的控制器处理这些会议或将一些数据重新分配给基于云的媒体代理。容量阈值可以指示媒体代理不能处理另外的音频或视频流。如果达到容量阈值，则集中控制器可以查找基于云的媒体代理的位置以处理来自请求加入会议的新客户端的媒体请求。
如本文所述，阈值容量可以是被用于确定处理所请求的会议的媒体代理的唯一因素。处理也可以基于会议的安全类型进行，使得安全会议由被认为是最安全的媒体代理来处理。例如，控制器逻辑可以确定最安全的媒体代理，并将安全呼叫引导到最安全的媒体代理。在图3的示例实施例中，阈值容量被用作用于确定对会议的处理的一个示例因素。
在310处，当客户端设备希望加入会议时，客户端设备向集中控制器发送请求加入电话会议(包括音频会议或视频会议)的消息。在示例实施例中，集中控制器是基于云的并且驻留在云中。在312处，集中控制器返回用于标识针对客户端设备的适当的媒体代理的媒体URL以连接到会议。在媒体URL中标识的媒体代理可以是基于云的媒体代理或本地部署的媒体代理，这取决于用于由适当的媒体代理处理会议的基于云的控制器的逻辑。在314处，控制器可以可选地进一步命令适当的媒体代理彼此进行通信以辅助会议。在316处，媒体代理在其达到阈值容量时向控制器发送通知。在318处，由基于云的控制器确定是否所有本地部署的媒体代理已达到其容量阈值。当在318处所有本地部署的媒体代理尚未都达到阈值容量时，集中控制器返回到312并继续向客户端提供媒体URL来由本地部署的媒体代理处理。当在318处所有本地部署的媒体代理都达到其阈值容量时，在320处集中控制器将重新分配某些数据通信，或将未来的会议请求引导到基于云的媒体代理。
图4示出了根据本发明的主题技术的一些方面的示例框图，其包括在每组媒体代理前面的STUN[NAT(网络地址转换器)的UDP(通用数据报协议)简单穿越]负载均衡器(也被称为“负载均衡服务器”)。虽然被描述为STUN负载均衡器，但应理解的是，可以根据主题技术的教导来实现任何负载均衡器。此外，还可以想到，在替代实施例中，负载均衡器功能可以被吸收到媒体代理中。因此，当负载均衡器接收到加入请求时，它询问负载均衡器之间的共享数据库，并确定哪个媒体代理已在为该会议服务(如果有的话)。如果已分配了一个，则负载均衡器将客户端重新引导到该媒体代理。如果没有，则负载均衡器将客户端重新引导到具有可用容量的媒体代理。
本文呈现的技术动态地配置高度分布的资源，以根据需要支持由呼叫者发起的会议会话。为了支持这些技术，控制器、媒体代理、呼叫者和负载均衡器通过使用各种通信协议来进行实现并与彼此进行交互，以建立会议会话并且在会议会话中交换包括数据分组的媒体流。这样的通信协议包括但不限于：交互式连接建立(ICE)协议；根据本文呈现的技术被修改/被扩展为使用STUN URL的STUN协议；用户数据报协议(UDP)和实时传输协议(RTP)。本文所描述的技术仅通过示例的方式使用上述协议，如相关领域的技术人员可以对本文中给出的描述的理解，还可以使用其他类似的协议来代替所提及的协议或与所提及的协议组合使用。
图5示出了通过使用例如包括如图4所示的STUN负载均衡器的会议系统来引导会议的示例方法实施例。在510处，当客户端连接到控制器时，客户端被给予单个STUN URL510。当客户端从企业边界内解析出该DNS时，则在512处产生两个不同的记录。第一个记录是指向基于云的代理的集群的VIP(虚拟IP地址)。另一记录以更高的优先级指向本地部署的媒体代理的集群。如图所示，在这些集群中的每一者前面的是STUN负载均衡器，但应理解的是，任何负载均衡器可以被实现和/或负载平衡功能可以被吸收到媒体代理本身中。
在514处，客户端使用STUN来以较高优先级连接到本地部署的媒体代理。在516处，STUN负载均衡器监视基于云的媒体代理的负载。在518处，STUN负载均衡器确定本地部署的媒体代理是否有足够的容量。当有足够的容量时，则在520处由本地部署的媒体代理处理该请求，然后在522处用户连接到本地部署的媒体代理。当在518处没有足够的容量时，则在524处STUN负载均衡器可以用指示临时容量故障的错误响应来拒绝STUN请求。在526处，客户端将该错误响应用作替代地尝试第二IP地址的信号。在528处，客户端设备执行到第二IP地址(其是基于云的媒体代理)的STUN。由于云端有足够的容量，负载均衡器可以将请求引导到可用的媒体代理，并且STUN事务成功完成。在530处，客户端连接到基于云的媒体代理。
图5示出的该示例实施例的益处是它不要求控制器知道媒体代理的可用容量，从而扩展到全球范围内的更多集群。这种技术在水平分割DNS方面也尤其出色，其中STUN URL针对在企业边界内执行的解决方案将返回两个VIP，但在客户端在企业边界外部时仅返回一个VIP(云VIP)。该模型主要涉及实现基于云的资源来解决本地部署的媒体代理超出容量的问题。组织也可能使用从基于云的会议中可获得的本地部署的资源。
在另一示例实施例中，基于云的媒体代理和本地部署的媒体代理对会议的处理可以基于媒体形式而非媒体代理是否超出容量。例如，本地部署会议可以在维持本地部署的其他资源的同时选择将特定媒体类型的会议或模式组合的会议引导到云。可以向云控制器提供逻辑以基于与特定会议相关联的信息来确定引导会议的最佳模式。例如，如果请求的是音频会议，则该音频会议由第一组媒体代理处理，如果请求的是视频会议，则该视频会议由第二组媒体代理处理，并且如果请求的是共享会议，则该共享会议由第三组媒体代理处理。
图6A、图6B示出了根据本技术的一些方面的示例系统实施例。当实践本技术时，更合适的实施例对于本领域技术人员将是显而易见的。本领域技术人员还将容易理解的是，其他系统实施例是可能的。
图6B示出了常规系统总线计算系统架构600，其中系统的组件通过使用总线605与彼此进行电通信。示例性系统600包括处理单元(CPU或处理器)610和系统总线605，其中系统总线605将包括系统存储器615(例如，只读存储器(ROM)620和随机存取存储器(RAM)625)的各种系统组件耦接到处理器610。系统600可以包括直接连接到处理器610、邻近于处理器610、或被集成为处理器610的一部分的高速存储器的高速缓存。系统600可以将来自存储器615和/或存储设备630的数据复制到高速缓存612以用于处理器610的快速访问。以这种方式，高速缓存可以提供避免了在等待数据时处理器610的延迟的性能提升。这些和其他模块可以控制或被配置为控制处理器610执行各种动作。也可以使用其他系统存储器615。存储器615可以包括具有不同性能特性的多种不同类型的存储器。处理器610可以包括任何通用处理器和硬件模块或软件模块(例如，存储在存储设备630中被配置为控制处理器610以及专用处理器的模块1 632、模块2 634、以及模块3 636，其中在专用处理器中，软件指令被并入实际的处理器设计中)。处理器610本质上可以是包括多个核或处理器、总线、存储器控制器、高速缓存等的完全独立的计算系统。多核处理器可以是对称的或非对称的。
为了实现用户与计算设备600的交互，输入设备645可以表示任何数目的输入机制，例如，用于语音的麦克风、用于手势或图形输入的触敏屏、键盘、鼠标、运动输入、语音等等。输出设备635也可以是本领域技术人员已知的多个输出机制中的一个或多个。在一些实例中，多模式系统可以使用户能够提供多种类型的输入以与计算设备600进行通信。通信接口640通常可以支配和管理用户输入和系统输出。对在任何特定硬件布置上操作没有限制，因此这里的基本特征可以容易地在开发改进的硬件或固件布置时被替代。
存储设备630是非易失性存储器，并且可以是硬盘或可以存储可由计算机访问的数据的其他类型的计算机可读介质，例如，磁带盒、闪存卡、固态存储器设备、数字通用磁盘、盘盒、随机存取存储器(RAM)625、只读存储器(ROM)620、以及其混合。
存储设备630可以包括用于控制处理器610的软件模块632、634、636。设想其他硬件或软件模块。存储设备630可以连接到系统总线605。在一个方面，执行特定功能的硬件模块可以包括存储在计算机可读介质中与必要的硬件组件(例如，处理器610、总线605、显示器635等)相连接的用于执行该功能的软件组件。
图6A示出了具有可用于执行所描述的方法并且生成和显示图形用户界面(GUI)的芯片组架构的计算机系统650。计算机系统650是可以用于实现所公开的技术的计算机硬件、软件和固件的示例。系统650可以包括处理器655，其表示能够执行被配置为执行所标识的计算的软件、固件和硬件的任何数目的物理上和/或逻辑上不同的资源。处理器655可以与芯片组660进行通信，其中芯片组660可以控制去往处理器655的输入和来自处理器655的输出。在该示例中，芯片组660将信息输出到诸如显示器之类的输出665，并且可以读取信息并将信息写入到存储设备670，其中存储设备670可以包括例如磁性介质和固态介质。芯片组660还可以从RAM 675读取数据并将数据写入到RAM 675中。可以提供用于与各种用户接口部件685接口的桥接器680，以用于与芯片组660进行接口连接。这样的用户接口部件685可以包括键盘、麦克风、触摸检测和处理电路，诸如鼠标之类的点选设备等。通常，系统650的输入可以来自各种机器生成的源和/或人生成的源中的任一者。
芯片组660还可以与一个或多个通信接口690接口连接，其中通信接口690可以具有不同的物理接口。这样的通信接口可以包括用于有线和无线局域网、用于宽带无线网络、以及个人区域网络的接口。本文公开的用于生成、显示和使用GUI的方法的一些应用可以包括通过物理接口接收有序数据集，或者由机器本身生成(通过处理器655分析存储在存储设备670或675中的数据)。此外，机器可以经由用户接口组件685从用户接收输入，并通过使用处理器655来解释这些输入从而执行适当的功能(例如，浏览功能)。
可以理解的是，示例性系统600和650可以具有不止一个处理器610，或者是联网在一起的计算设备的群组或集群的一部分以提供更强的处理能力。
本领域技术人员将容易认识到的是，以上提供的示例和技术仅出于清楚和解释的目的，并且可以包括许多附加的概念和变化。
为了清楚的解释，在一些实例中，本技术可以被呈现为包括包括功能块的单个功能块，其中功能块包括在软件中或硬件和软件的组合中实现的方法中的设备、设备组件、步骤、或例程。
在一些实施例中，计算机可读存储设备、介质和存储器可以包括包含比特流等的电缆或无线信号。然而，当被提及时，非暂态计算机可读存储介质明确排除诸如能量、载波信号、电磁波和信号本身之类的介质。
根据上述示例的方法可以使用被存储在计算机可读介质中的或以其他方式从计算机可读介质可获得的计算机可执行指令来实现。这样的指令可以包括例如使得通用计算机、专用计算机、或专用处理设备或以其他方式将其配置为执行某个功能或某组功能的指令和数据。所使用的计算机资源的一部分可以通过网络访问。计算机可执行指令可以是例如二进制文件、中间格式指令(例如，汇编语言、固件、或源代码)。在根据所描述的示例的方法期间可被用于存储指令、所使用的信息、和/或所创建的信息的计算机可读介质的示例包括磁盘或光盘、闪存、提供有非易失性存储器的USB设备、联网的存储设备、等等。
根据这些公开实现方法的设备可以包括硬件、固件和/或软件，并且可以采用各种形式因素中的任何一种。这种形式因素的典型示例包括笔记本电脑、智能电话、小型个人计算机、个人数字助理、机架安装设备、独立设备等。本文所描述的功能也可以在外围设备或附加卡中实现。通过进一步的示例的方式，这样的功能还可以在单个设备中执行的不同的进程之间或不同芯片之间的的电路板上实现。
指令、用于传送这样的指令的介质、用于执行它们的计算资源、以及用于支持这种计算资源的其他结构是用于提供这些公开中描述的功能的手段。
虽然各种示例和其他信息被用于解释所附权利要求的范围内的各方面，但不应基于在这样的示例中的特定特征或布置来暗示权利要求的限制，因为本领域技术人员将能够使用这些示例来导出各种各样的实现方式。此外，虽然某些主题可能已经用特定于结构特征和/或方法步骤的示例的语言来描述，但应理解的是，所附权利要求中限定的主题不一定限于这些所描述的特征或动作。例如，这样的功能可以被不同地分布或者在除了本文所标识的这些组件之外的组件中被执行。然而，所描述的特征和步骤被公开为在所附权利要求的范围内的系统的组件和方法的示例。此外，记载“集合中的至少一个”的权利要求语言指示集合中的一个成员或集合中的多个成员满足权利要求。
Claims (15)
1.一种方法，包括：
向基于云的控制器注册多个本地部署的媒体代理，所述多个本地部署的媒体代理被设置在企业的物理位置处，并且基于云的控制器被设置在远离所述企业的物理位置的云位置处；
向所述基于云的控制器注册多个基于云的媒体代理，所述多个基于云的媒体代理被设置在远离所述企业的物理位置的所述云位置处；
在所述基于云的控制器处接收来自客户端设备的加入会议的请求；以及
根据与所述客户端设备请求加入的所述会议相关联的至少一个因素来选择至少一个本地部署的媒体代理或至少一个基于云的媒体代理来处理所述请求。
2.根据权利要求1所述的方法，其中，引导所述请求包括确定本地部署的媒体代理的容量超过限制。
3.根据权利要求1所述的方法，其中，引导所述请求包括确定不能进行与第一媒体代理的第一连接尝试以及连接到第二媒体代理。
4.根据权利要求1所述的方法，其中，与所述会议相关联的所述因素包括所述媒体代理的容量。
5.根据权利要求1所述的方法，其中，与所述会议相关联的所述因素包括所述会议的安全类型，使得当本地部署的媒体代理被认为比所述基于云的媒体代理更安全时，安全会议被引导到所述本地部署的媒体代理。
6.根据权利要求1所述的方法，其中，与所述会议相关联的所述因素包括所述会议的安全类型，使得当基于云的媒体代理被认为比所述本地部署的媒体代理更安全时，安全会议被引导到所述基于云的媒体代理。
7.根据权利要求1所述的方法，其中，与所述会议相关联的所述因素包括所述会议的媒体类型，使得第一媒体类型的会议被引导到本地部署的媒体代理，并且第二媒体类型的会议被引导到基于云的媒体代理。
8.一种系统，包括：
被设置在企业的物理位置处的多个本地部署的媒体代理；
被设置在远离企业的所述物理位置的云位置处的多个基于云的媒体代理；以及
被设置在所述云位置处的控制器，所述控制器根据与会议相关联的一些因素选择至少一个本地部署的媒体代理或至少一个基于云的媒体代理来处理加入所述会议的请求。
9.根据权利要求8所述的系统，其中，基于本地部署的媒体代理的容量是否超出限制来引导所述会议。
10.根据权利要求8所述的系统，还包括本地部署的STUN负载均衡器以及基于云的STUN负载均衡器，其中所述本地部署的STUN负载均衡器监视所述多个本地部署的媒体代理中的每一者的容量，所述基于云的STUN负载均衡器监视所述多个基于云的媒体代理中的每一者的容量。
11.根据权利要求8所述的系统，其中，基于所述会议的媒体类型或安全类型来引导所述会议。
12.根据权利要求8所述的系统，其中，安全会议被引导到所述多个本地部署的媒体代理中的至少一个，并且非安全会议被引导到所述多个基于云的媒体代理中的至少一个。
13.一种方法，包括：
由集中控制器接收来自请求者的请求加入会议的消息；
尝试与第一媒体代理的第一连接，所述第一媒体代理包括在企业处的多个本地部署的媒体代理中的至少一个；以及
当尝试与所述第一媒体代理的所述第一连接的结果不成功时，尝试与第二媒体代理的第二连接，所述第二媒体代理包括在远离所述企业的云位置处的多个基于云的媒体代理中的至少一个。
14.根据权利要求13所述的方法，其中，当所述第一媒体代理已达到或超过容量限制时，尝试与所述第一媒体代理的所述第一连接的所述结果不成功。
15.根据权利要求13所述的方法，其中，所述基于云的媒体代理和所述本地部署的媒体代理的容量由以下各项中的一项或多项来监视：所述控制器、基于云的STUN负载均衡器、以及本地部署的STUN负载均衡器。
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| US9948786B2 (en) | 2018-04-17 |
| WO2016168473A1 (en) | 2016-10-20 |
| EP3284211B1 (en) | 2020-01-01 |
| US20180302514A1 (en) | 2018-10-18 |
| US10623576B2 (en) | 2020-04-14 |
| US20160309037A1 (en) | 2016-10-20 |
| EP3651411B1 (en) | 2022-11-23 |
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