WO2008003188A1 - Network connection method and network system for video conference service - Google Patents

Network connection method and network system for video conference service Download PDF

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Publication number
WO2008003188A1
WO2008003188A1 PCT/CN2006/003174 CN2006003174W WO2008003188A1 WO 2008003188 A1 WO2008003188 A1 WO 2008003188A1 CN 2006003174 W CN2006003174 W CN 2006003174W WO 2008003188 A1 WO2008003188 A1 WO 2008003188A1
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WO
WIPO (PCT)
Prior art keywords
conference
video conference
video
mcu
terminal
Prior art date
Application number
PCT/CN2006/003174
Other languages
French (fr)
Chinese (zh)
Inventor
Yonggang Fu
Jian Weng
Jun Li
Original Assignee
Zte Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2008003188A1 publication Critical patent/WO2008003188A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems

Definitions

  • the present invention relates to the field of communications, and in particular, to a network connection method and a network system for a frequency conference service.
  • BACKGROUND OF THE INVENTION Providing multimedia services integrating voice, data and video to users on an IP network is a development goal of the communication network. With the rapid improvement of IP network bandwidth, the continuous improvement of QoS and security technologies, and the rapid growth of users' demand for multimedia communication based on IP networks, how to construct a practical multimedia communication network and how to provide rich multimedia communication services to users It has become a common concern of telecom operators and communication equipment vendors. Today's operators have two video conferencing systems, H.320 system and H.323 system.
  • the eDonkey conference networks based on the H.323 system are for group users such as government agencies and large enterprises and institutions. They are basically proprietary networks, and rarely communicate with public networks such as fixed telephone networks, and the business functions are relatively simple.
  • the emerging softswitch technology provides a new multimedia service implementation.
  • the softswitch technology of the next generation network adopts a layered network architecture and is fully open. There are obvious advantages in comprehensive access capabilities, service provisioning, network management, user authentication, authentication and billing. While constructing a new generation network, it fully considers the smooth transition of existing networks, and integrates voice, data, multimedia and other services into one, truly realizing the customization of the business.
  • the continuous development of IP-based data networks provides a realistic basis for the development of multimedia services based on softswitch technology. Therefore, it is an inevitable choice for operators to develop video conferencing services in next-generation networks.
  • the conference TV operation in the next generation network can only be realized by the H.323 video conferencing system and the softswitch interworking method, that is, all terminals access through the softswitch and utilize the network in the H.323 conference television system.
  • the shou and softswitches communicate with each other in the way of neighboring gatekeepers, as shown in Figure 1. This way is actually two separate networks, just using softswitch Access function.
  • the present invention provides a new network connection method and network system for a video conference service to implement complete integration of a video conference network and a softswitch in a next generation network.
  • a network connection method for a video conference service includes the following steps: S302: A conference organizer reserves a multipoint control unit for video conference service on a video conference service system (Multipoint Control) S304, the video conference service system applies to the resource server for the video conference service MCU in response to the reservation; S306, after the video conference service system obtains the MCU, the video conference service is scheduled to the MCU, and the Parlay is notified.
  • Multipoint Control Multipoint Control
  • the gateway notifies the MCU to initiate a video conference service, and establishes a network connection for the video conference service through the MCU.
  • a network connection method for a video conference includes the following steps: S502: A conference initiator sends a conference parameter to a softswitch device through a conference terminal, and triggers a video conference service by using a softswitch device.
  • the conference service system schedules the video conference service to the MCU, and notifies the MCU to initiate a video conference service through the Parlay gateway, and establishes a network connection for the video conference service through the MCU.
  • a network system for a video conference service including: at least one multimedia terminal having voice, video codec and data functions, connected to a softswitch device; and a Parlay gateway It is a system that provides Parlay API for developing video conferencing service applications, communicates with the video conferencing service system through the Parlay API, and communicates with the MCU device or the softswitch device through the Session Initiation Protocol (Session Initiation Protocol, The device is called SIP) protocol for communication; the softswitch device is used to provide centralized call control, access routing, and value-added service interfaces, and adaptation of various protocols, and communication with the Parlay gateway through the SIP protocol; MCU device, Providing mixing and image encoding and decoding capabilities, and for initiating conferences, implementing various control of conferences, communicating with resource policy servers through resource policy protocols, or proprietary protocols, and communicating with Parlay gateways via SIP protocol;
  • the video conference service system is used to provide user account opening, multimedia service registration and
  • the resource policy protocol or the private protocol communicates with the Parlay gateway through the Parlay Application Programming Interface (Parlay Application Programming Interface, Parlay API); the resource policy server manages the MCU device and plays the video.
  • the meeting entered 4 schedules, Video conference between business systems, or MCU to communicate through resource policy agreements or proprietary protocols.
  • FIG. 1 is a schematic diagram of components of a conventional video conference operation system and softswitch fusion
  • FIG. 2 is a composition diagram of a network system for video conference according to the present invention
  • FIG. 3B is a specific flowchart showing step S304 in the method shown in FIG. 3A;
  • FIG. 3A is a schematic diagram of components of a conventional video conference operation system and softswitch fusion
  • FIG. 4 is a diagram showing a user in a video according to an embodiment of the present invention
  • 5A is a flowchart showing another network connection method for video conference according to the present invention
  • FIG. 5B is a specific flowchart showing step S502 in the method shown in FIG. 5A
  • FIG. 5C is a diagram showing A specific flow chart of step S506 in the method shown in FIG. 5A
  • FIG. 5D is a specific flow chart showing step S508 in the method shown in FIG. 5A
  • FIG. 6 is a view showing the terminal flow in the terminal according to the embodiment of the present invention
  • FIG. 5A is a flowchart showing another network connection method for video conference according to the present invention
  • FIG. 5B is a specific flowchart showing step S502 in the method shown in FIG. 5A
  • FIG. 5C is a diagram showing A specific flow chart of step S506 in the method shown in FIG. 5
  • FIG. 7 is a flowchart showing video conferencing control performed by a user on a user interface of a video conferencing service system according to an embodiment of the present invention
  • FIG. 8 is a diagram showing a user according to an embodiment of the present invention.
  • the network system for video conferencing services of the present invention includes: at least one multimedia terminal 202 having voice, video codec and data functions, connected to a softswitch device;
  • Parlay gateway 204 which is A system for providing a Parlay API for developing a video conferencing service application, communicating with a video conferencing service system through a Parlay API, and communicating with an MCU device or a softswitch device via a SIP protocol; and a softswitch device 206 for providing centralized Call control, access routing, and value-added service interfaces, and adaptation of various protocols, communicate with the Parlay gateway through the SIP protocol;
  • the MCU device 208 is used to provide mixing and image encoding and decoding capabilities, and is used to initiate a conference and implement The various control of the conference, the resource policy server communicates with the resource policy protocol, or the private protocol, and communicates with the Parlay gateway through the SIP protocol;
  • the video conference service system 210 is used to provide user account opening and multimedia services for the network.
  • the source policy protocol, or the private protocol communicates, and communicates with the Parlay gateway through the Parlay API;
  • the resource policy server 212 is configured to manage the MCU device, and schedule the video conference, and the video conference service system, or the MCU. Communicate through resource policy protocols or proprietary protocols.
  • the system can also include a server 214 for playing sound during a video conference.
  • the at least one multimedia terminal includes at least one of the following terminals: a .323 terminal, a .320 terminal, or a SIP terminal.
  • the H.323 gateway/H.320 gateway can be attached to the softswitch device as a functional entity of the softswitch device, or can be independent from the softswitch device.
  • each protocol adaptation (H.323/SIP/H.248/MGCP) module in the softswitch device can also be isolated as a corresponding gateway device.
  • the resource strategy system and the video conference service system can be provided together as a whole or separated as two independent parts.
  • the PARLAY gateway can be attached to the softswitch device as a functional entity of the softswitch, or it can be independent from the softswitch device.
  • FIG. 3A is a flow chart showing a network connection method for a video conference according to the present invention.
  • FIG. 3B is a specific flowchart showing step S304 in the method shown in FIG. 3A.
  • the network connection method for a video conference service according to the present invention includes the following steps: S302: A conference initiator reserves an MCU for performing a video conference service on a video conference service system; S304, the video conference service system responds to An MCU that requests a video conference service from the resource server; S306, after the video conference service system obtains the MCU, schedules the conference service to the MCU, and notifies the Parlay gateway to notify the MCU to initiate a video conference service, and establishes a video conference through the MCU.
  • the network connection method for the frequency conference service further includes the following steps: S308: The video conference service system calls at least one conference terminal different from the conference terminal of the conference initiator, and adds at least one conference terminal to the conference for the video conference.
  • the video conference initiator controls the video conference through the video conference service system.
  • the conference participants of at least one conference terminal control the video conference through at least one conference terminal.
  • the video conference service system applies to the resource server for the video conference service MCU through the resource policy service protocol or the private protocol. As shown in FIG.
  • the step S308 includes the following steps: S3082: The video conference service system sends the call message to the MCU through the Parla gateway, and the MCU responds to the call message and reports the response result to the frequency conference service system through the Parlay gateway. S3084, the video conference service system notifies the call message to the Parlay gateway, and the Parlay gateway sends the call message to the at least one conference terminal through the softswitch device, and the at least one conference terminal responds to the call message and passes the response result through the Parlay gateway and the softswitch.
  • the device notifies the video conference service system; and the S3086, the video conference service system notifies the MCU of the response result of the conference terminal through the Parlay gateway, so that the conference terminal communicates with the MCU, thereby adding the conference terminal to the network connection for the video conference.
  • the conference initiator notifies the conference control command to the Parlay gateway through the video conference service system, notifies the MUC through the Parlay gateway, and controls the video conference through the MUC.
  • the conference participant of the at least one conference terminal sends the conference control command to the softswitch device through the at least one conference terminal, and forwards the conference control command to the Parlay gateway through the softswitch device, and the Parlay gateway forwards the conference control command to the MCU, and controls the video through the MCU. meeting.
  • Step 1 A user subscribes to a video conference through a video conference service system: a user is in a video conference service system.
  • the video conference service system subscribes to the resource server through the resource policy service protocol or the private protocol; the resource server schedules the conference to the corresponding MCU according to the resource condition, captures the resource reservation, and notifies the video conference service system of the result.
  • Step 2 The video conference service system convene a video conference: The video conference service system notifies the Parlay gateway to convene a conference; the Parlay gateway notifies the corresponding MCU to convene a conference; the MCU notifies the Parlay gateway of the result; the Parlay gateway then notifies the video conference service system of the result; Third, the video conferencing service system calls the terminal, and each terminal is called through the following steps: The video conference service operation system notifies the Parlay gateway to call the MCU; the Parlay gateway sends the call message to the MCU; the MCU responds and the node Notice Parlay gateway; Parlay gateway MCU response notifies video conference service system; video conferencing system notification service Parlay gateway calls the terminal; the Parlay gateway sends the call message to the softswitch; the softswitch sends the call message to the terminal (if the H.323 terminal requires the softswitch to convert the SIP message into an H.323 message); the terminal responds and the result Sending to the softswitch; the softswitch sends the
  • FIG. 5A is a flowchart showing another network connection method for video conference according to the present invention
  • FIG. 5B is a specific flowchart showing step S502 in the method shown in FIG. 5A
  • FIG. 5C is a diagram showing A specific flowchart of step S506 in the method shown in FIG. 5A
  • FIG. 5D is a specific flowchart showing step S508 in the method shown in FIG. 5A.
  • the network connection method for video conference includes the following steps: S502: A conference initiator sends a conference parameter to a softswitch device through a conference terminal, and triggers a video conference service through a softswitch device, and the video The triggering of the conference service is notified to the video conference service system by the Parlay gateway; S504, the video conference service system applies to the resource server for the MCU for the video conference service in response to the trigger of the video conference service; and S506, after the video conference service system obtains the MCU, The video conference service is dispatched to the MCU, and the MCU is notified by the Parlay gateway to initiate a video conference service, and the network connection for the video conference service is established through the MCU.
  • the method may further include the following steps: S508: The conference initiator adds another at least one conference terminal to the network connection for the video conference service by using the frequency conference conference service system.
  • the conference participants at the video conference service system control the video conference service through the video conference service system.
  • the conference initiator or the conference participant at the at least one conference terminal controls the video conference service through the conference terminal.
  • the conference service system applies to the resource server for the video conference service MCU through the resource policy service protocol or the private protocol.
  • step S502 further includes the following steps: S5022: The conference terminal sends the conference parameter to the softswitch device; S5024, the softswitch device triggers the video conference service in response to the conference parameter, and triggers the trigger of the video conference.
  • step S506 further includes the following steps: S5062: After the video conference service system acquires the MCU, the video conference service is scheduled to be sent to the MCU. S5064, the frequency conference service system notifies the MCU to initiate the video conference service through the Parlay gateway. S5066, the MCU returns SDP information to the Parlay gateway in response to the notification of initiating the video conference service; S5068, the Parlay gateway receives the SDP information and sends it to the conference terminal where the conference initiator is located, thereby establishing a network connection for the video conference service. . As shown in FIG.
  • step S508 further includes the following steps: S5082, the conference initiator notifies the Parlay gateway to call the MCU through the softswitch device; S5084, the video conference service system in which the MCU responds to the call and notifies the response result thereof; S5086, video conference service system calls of other at least one terminal through the Parlay gateway, Parlay gateway; S5088, the terminal in response to the call, and by Parlay gateway, Parlay gateway ⁇ 1 response result port video conference service system thereof, such that the other of the at least A terminal is connected to the MCU to add other at least one conference terminal to the network connection for the video conference service.
  • the conference participant at the video conference service system notifies the conference control command to the Parlay gateway through the video conference service system, notifies the MUC through the Parlay gateway, and controls the video conference through the MUC.
  • the conference initiator or the conference participant of the at least one conference terminal sends the conference control command to the softswitch device through the at least one terminal, and forwards the conference control command to the Parlay gateway through the softswitch device, and the Parlay gateway forwards the conference control command to the MCU. , control video conferencing through the MCU. Specifically, referring to FIG.
  • Step 1 A user holds a video conference through the conference terminal: the user sends the conference parameters to the softswitch through the conference terminal; The softswitch triggers the video conference service to notify the Parlay gateway; the Parlay gateway notifies the video conference service system; the video conference service system applies for resources to the resource server through the resource policy monthly service protocol or the private protocol; the resource server schedules the conference to the corresponding according to the resource situation. On the MCU, the resource is reserved; and the result is notified to the video conference service system; Step 2: The video conference service system holds a video conference: Video conference service system command
  • the Parlay gateway convene a conference; the Parlay gateway notifies the corresponding MCU to convene a conference; the MCU notifies the video conference service system of the result; Step 3: The video conference service system calls the MCU: the video conference service system calls the MCU through the Parlay gateway; the MCU passes the call result through the Parlay gateway.
  • the Parlay gateway notifies the softswitch of the SDP information returned by the MCU; the softswitch notifies the terminal of the SDP information of the MCU, so that the terminal successfully convene a conference;
  • Step 4 the video conference service system calls the conference Other terminals:
  • the ⁇ frequency conference service system calls the MCU through the Parlay gateway;
  • the MCU notifies the video conference service system through the Parlay gateway;
  • the video conference service system calls the terminal through the Parlay gateway to the softswitch;
  • the softswitch and the terminal call result pass the Parlay
  • the gateway notifies the video conferencing service system that the terminal and the MCU are successful.
  • the conference initiator or conference participant may control the video conference on the interface of the video conference service system or on the terminal interface.
  • FIG. 7 a process of performing frequency conference control on a user interface of a video conference service system according to an embodiment of the present invention is provided: a user performs conference control in a conference control interface provided by a video conference service system; and a video conference service system
  • the conference control command notifies the Parlay gateway; the Parlay gateway notifies the MCU of the conference control command; the MCU executes the conference control command and reports the result to the video conference service system through the Parlay gateway.
  • a process for performing conference control on a terminal interface by a user in the embodiment of the present invention is illustrated: a user performs a conference control operation in an H.323 terminal control interface; a terminal sends a conference control command to a softswitch device; and the softswitch device Forward the conference control command to the Parlay gateway.
  • the Parlay gateway sends the conference control command to the MCU; the MCU executes the conference control command and the result Notifying the Parlay gateway; the Parlay gateway notifies the video conference service system of the conference control result; the Parlay gateway notifies the softswitch of the conference control result; the softswitch notifies the terminal of the conference control result (the SIP message needs to be converted into an H.323 message).
  • the beneficial effects of the invention are: 1. It can realize the complete integration of video conferencing system and softswitch, and it is easier to realize business innovation, and provide users with diversified, personalized and multimedia communication services.

Abstract

A network connection method and a network system for video conference service are disclosed. Therein, the network connection method includes the following steps: S302, sponsor of a conference preengages the MCU for video conference service in the video service conference system; S304, the video conference service system applies the MCU for video conference service from the resource server responding to the preengagement; S306, the video conference service system schedules the video conference service onto the MCU after receiving the MCU, and informs the Parlay gateway to inform the MCU to start the video conference service, and establishes the network connection for video conference service.

Description

用于视频 ^义业务的  Used for video
网络连接方法及网络系统 技术领域 本发明涉及通信领域， 更具体地涉及一种用于枧频会议业务的网络 连接方法及网絡系统。 背景技术 在 IP网络上向用户提供集语音、 数据、 视频为一体的多媒体业务是 通信网络发展的目标。 随着 IP网络带宽的快速提升、 QoS及安全技术的 不断完善， 以及用户对于基于 IP网络的多媒体通信需求的迅猛增长， 如 何构建可实际运营的多媒体通信网络、如何向用户提供丰富的多媒体通信 业务， 已经成为电信运营商及通讯设备商共同关心的问题。 现在的运营商已有 H.320系统和 H.323 系统两种电视会议系统。 目 前基于 H.323系统的电枧会议网络大多面向政府机关、大型的企事业单位 等集团用户，基本上是一些专有网络，与固定电话网等公众网络鲜有沟通， 且业务功能比较单一，而新兴的软交换技术则提供了一种全新的多媒体业 务实现方案。 下一代网络的软交换技术采用分层的网络架构，具备全面的开放性。 在综合接入能力、 业务提供、 网络管理、 用户认证、 鉴权和计费等方面有 明显的优势。 在构建新一代网络的同时， 它充分考虑到现有各种网络的平 滑过渡， 集语音、 数据、 多媒体等业务为一体， 真正实现了业务的客户定 制化。 另一方面， 以 IP为基础的数据网的不断发展， 为基于软交换技术 的多媒体业务的开展提供了现实的基础。因此在下一代网络中开展视频会 议业务运营是各运营商的必然选择。 目前要在下一代网络中进行会议电视运营， 只能采取 H.323 电视会 议系统和软交换互通的办法来实现， 即所有的终端通过软交换接入， 利用 H.323 会议电视系统中的网守和软交换以互为邻域网守的方式来进行互 通， 如图 1所示。 这种方式其实还是两张独立的网， 只是利用了软交换的 接入功能。 特别是在业务上是独立的， 需要两套独立的运营系统， 从而使 电视会议业务不能和软交换提供的各种业务进行有效的融合。不利于运营 商的维护和业务开发。 因此， 需要一种新的用于视频会议业务的网络连接方法及网络系统。 发明内容 鉴于上述问题， 本发明提供了一种新的用于视频会议业务的网络连 接方法及网络系统，以在下一代网络中实现视频会议网络和软交换的完全 融合。 根据本发明的一个方面， 提供了一种用于视频会议业务的网络连接 方法， 其包括以下步骤： S302, 会议发起者在视频会议业务系统上预约进 行视频会议业务的多点控制单元 （ Multipoint Control Unit, 筒称 MCU ); S304, 视频会议业务系统响应于预约， 向资源服务器申请进行视频会议业 务的 MCU; S306, 视频会议业务系统获得 MCU后， 将视频会议业务调 度到 MCU上， 并通知 Parlay (其是由 BT、 Ulticom, Microsoft, Nortel, Siemens五家公司联合发起的组织 ) 网关通知 MCU发起视频会议业务， 通过 MCU建立用于视频会议业务的网络连接。 根据本发明的另一方面，提供了一种用于视频会议的网络连接方法， 其包括以下步骤： S502, 会议发起者通过会议终端向软交换设备发送会议 参数， 通过软交换设备触发视频会议业务， 并将视频会议业务的触发通过 Parlay网关通知给视频会议业务系统； S504, 视频会议业务系统响应于视 频会议业务的触发， 向资源月艮务器申请进行视频会议业务的 MCU; 以及 S506,视频会议业务系统获取 MCU后，将视频会议业务调度到 MCU上， 并通过 Parlay网关通知 MCU发起视频会议业务， 通过 MCU建立用于视 频会议业务的网络连接。 根据本发明的再一方面，提供了一种用于视频会议业务的网络系统， 包括： 至少一个多媒体终端， 具有语音、 视频编解码能力及数据功能， 连 接在软交换设备上； Parlay网关，其是为开发视频会议业务应用提供 Parlay API 的系统， 与视频会议业务系统之间通过 Parlay API 进行通讯， 并与 MCU设备、 或软交换设备通过会话初始协议 ( Session Initiation Protocol, 筒称 SIP )协议进行通讯； 软交换设备， 用于提供集中的呼叫控制、 接入 路由、 及增值业务接口， 以及各种协议的适配， 与 Parlay网关通过 SIP协 议进行通讯； MCU设备， 用于提供混音、 图像编解码能力， 并用于发起 会议、实现对会议的各种控制，与资源策略服务器之间通过资源策略协议、 或私有协议进行通讯， 并与 Parlay网关通过 SIP协议进行通讯； 视频会议 业务系统， 用于为网络提供用户开户、 多媒体业务登记与预约、 计费信息 与结算功能以及完成视频会议业务管理、 视频会议控制功能， 提供 WEB 用户服务功能， 与资源策略服务器之间通过资源策略协议、或私有协议进 行通讯，并与 Parlay网关之间通过 Parlay 应用程序接口（ Parlay Application Programming Interface, 简称 Parlay API )进行通讯； 资源策略月良务器， 用 于管理 MCU设备， 并对视频会议进 4亍调度， 与视频会议业务系统、 或 MCU之间通过资源策略协议或私有协议进行通讯。 通过本发明 , 可以实现视频会议系统和软交换的完全融合， 更容易 实现业务的创新， 从而可以为用户提供多样化、 个性化、 多媒体化的通信 服务。 附图说明 此处所说明的附图用来提供对本发明的进一步理解， 构成本申请的 一部分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本 发明的不当限定。 在附图中： 图 1 是现有的视频会议运营系统和软交换融合的各组成部分示意 图； 图 2是示出根据本发明的用于视频会议的网络系统的组成图； 图 3A是示出根据本发明的用于视频会议的网络连接方法的流程图； 图 3B是示出图 3A所示的方法中的步骤 S304的具体流程图； 图 4是示出根据本发明实施例的用户在视频会议业务系统提供的用 户界面上召开视频会议的流程图； 图 5A 是示出根据本发明的另一中用于视频会议的网络连接方法的 流程图； 图 5B是示出图 5A所示的方法中的步驟 S502的具体流程图； 图 5C是示出图 5A所示的方法中的步骤 S506的具体流程图； 图 5D是示出图 5A所示的方法中的步骤 S508的具体流称图； 图 6是示出根据本发明实施例的用于在终端上召开视频会议的流程 图； 图 7是示出根据本发明实施例的用户在视频会议业务系统的用户界 面上进行视频会议控制的流程图； 以及 图 8是示出根据本发明实施例的用户在终端界面上进行会议控制的 流程图。 具体实施方式 下面参考附图， 详细说明本发明的具体实施方式。 图 2是示出根据本发明的用于视频会议的网络系统的組成图。 如图 2所示， 居本发明的用于视频会议业务的网络系统包括： 至少一个多媒 体终端 202, 具有语音、 视频编解码能力及数据功能， 连接在软交换设备 上； Parlay网关 204, 其是为开发视频会议业务应用提供 Parlay API的系 统， 与视频会议业务系统之间通过 Parlay API进行通讯， 并与 MCU设备、 或软交换设备通过 SIP协议进行通讯； 软交换设备 206, 用于提供集中的 呼叫控制、 接入路由、 及增值业务接口， 以及各种协议的适配， 与 Parlay 网关通过 SIP协议进行通讯； MCU设备 208, 用于提供混音、 图像编解 码能力， 并用于发起会议、 实现对会议的各种控制， 与资源策略服务器之 间通过资源策略协议、 或私有协议进行通讯， 并与 Parlay网关通过 SIP协 议进行通讯； 视频会议业务系统 210, 用于为网络提供用户开户、 多媒体 业务登记与预约、 计费信息与结算功能以及完成视频会议业务管理、枧频 会议控制功能， 提供 WEB用户服务功能， 与资源策略服务器之间通过资 源策略协议、 或私有协议进行通讯， 并与 Parlay网关之间通过 Parlay API 进行通讯； 资源策略服务器 212, 用于管理 MCU设备， 并对视频会议进 行调度， 与视频会议业务系统、 或 MCU之间通过资源策略协议或私有协 议进行通讯。 另外， 该系统还可以包^ ί某体服务器 214, 用于在视频会议 过程中进行放音等。 其中，至少一个多媒体终端包括下列终端中的至少一种： Η.323终端、 Η.320终端、 或 SIP终端。 这些多媒体终端分别通过 H.323 网关、 H.320 网关、 或 SIP网关连接在软交换设备。 其中， H.323网关 /H.320网关可以 作为软交换设备的一个功能实体附属在软交换设备中 ,也可以从软交换设 备 中 独 立 出 来 。 另 外 ， 软交换设备 中 的 各个协议适配 ( H.323/SIP/H.248/MGCP )模块也可以作为相应的网关设备独立出来。 其中， 资源策略月艮务系统和视频会议业务系统可以合在一起作为一 个整体提供也可以分离出来作为两个独立的部分。 PARLAY网关可以作为 软交换的一个功能实体附属在软交换设备中，也可以从软交换设备中独立 出来。 图 3A是示出根据本发明的用于视频会议的网络连接方法的流程图。 图 3B是示出图 3A所示的方法中的步 S304的具体流程图。 如图 3A所 示，根据本发明的用于视频会议业务的网络连接方法包括以下步驟： S302, 会议发起者在视频会议业务系统上预约进行视频会议业务的 MCU; S304, 视频会议业务系统响应于预约， 向资源服务器申请进行视频会议业务的 MCU; S306, 视频会议业务系统获得 MCU 后， 将枧频会议业务调度到 MCU上， 并通知 Parlay 网关通知 MCU发起视频会议业务, 通过 MCU 建立用于视频会议业务的网络连接。该用于枧频会议业务的网络连接方法 还进一步包括以下步骤： S308, 视频会议业务系统呼叫不同于会议发起者 的会议终端的至少一个会议终端，将至少一个会议终端添加到用于视频会 议的网络连接中。 其中，视频会议发起者通过视频会议业务系统对视频会议进行控制。 至少一个会议终端的会议参与者通过至少一个会议终端对视频会议进行 控制。 其中， 在步骤 S304中， 视频会议业务系统通过资源策略服务协议或 私有协议向资源服务器申请进行视频会议业务的 MCU。 其中， 如图 3B所示， 步¾ S308 包括以下步骤： S3082, 视频会议 业务系统将呼叫消息通过 Parla 网关发送给 MCU, MCU响应呼叫消息 并将其的响应结果通过 Parlay网关通知枧频会议业务系统； S3084, 视频 会议业务系统将呼叫消息通知给 Parlay网关， Parlay网关通过软交换设备 将呼叫消息发送给至少一个会议终端，至少一个会议终端响应呼叫消息并 将其的响应结果通过 Parlay网关和软交换设备通知视频会议业务系统；以 及 S3086,视频会议业务系统通过 Parlay网关将会议终端的响应结果通知 MCU, 使得会议终端与 MCU互通， 从而将会议终端添加到用于视频会议 的网络连接中。 其中， 会议发起者通过视频会议业务系统将会议控制命令通知给 Parlay网关， 通过 Parlay 网关通知 MUC, 通过 MUC控制视频会议。 至 少一个会议终端的会议参与者通过至少一个会议终端将会议控制命令发 送至软交换设备， 通过软交换设备将会议控制命令转发给 Parlay 网关， Parlay网关将会议控制命令转发给 MCU, 通过 MCU控制视频会议。 具体地， 参考图 4 , 说明根据本发明实施例的用户在视频会议业务 系统提供的用户界面上召开视频会议的流程： 步骤一， 用户通过视频会议业务系统预约视频会议： 用户在视频会 议业务系统上预约一个视讯会议；视频会议业务系统通过资源策略服务协 议或私有协议向资源服务器申请资源；资源服务器根据资源情况将会议调 度到相应的 MCU上， 夺资源保留， 并将结果通知视频会议业务系统； 步骤二， 视频会议业务系统召开视频会议： 视频会议业务系统通知 Parlay网关召开会议； Parlay网关通知相应的 MCU召开会议； MCU将结 果通知 Parlay网关； Parlay网关再将结果通知视频会议业务系统； 步骤三， 视频会议业务系统呼叫终端， 呼叫每一个终端都要经过下 列步骤： 视频会议业务运营系统通知 Parlay网关呼叫 MCU; Parlay网关 将呼叫消息发送给 MCU; MCU进行应答并将结果通知 Parlay网关； Parlay 网关将 MCU的应答结果通知视频会议业务系统； 视频会议业务系统通知 Parlay网关呼叫终端； Parlay网关将呼叫消息发送给软交换； 软交换将呼 叫消息发送给终端（如果是 H.323终端需要软交换将 SIP消息转换成 H.323 消息）； 终端进行应答并将结果发送给软交换； 软交换将终端的呼叫结果 发送给 Parlay 网关 （如果是 H.323终端需要软交换将 H.323 消息转换成 SIP消息）； Parlay网关将终端的呼叫应答结果通知视频会议业务系统； 视 频会议业务系统将终端的呼叫应答结果经过 Parlay网关通知 MCU; 这样 终端就加入会议中， 能够和 MCU互通了。 图 5 A 是示出根据本发明的另一中用于视频会议的网络连接方法的 流程图； 图 5B是示出图 5A所示的方法中的步骤 S502的具体流程图； 图 5C是示出图 5A所示的方法中的步骤 S506的具体流程图； 以及图 5D是 示出图 5A所示的方法中的步骤 S508的具体流程图。 如图 5A所示，根据本发明的用于视频会议的网络连接方法包括以下 步驟： S502, 会议发起者通过会议终端向软交换设备发送会议参数， 通过 软交换设备触发视频会议业务，并将视频会议业务的触发通过 Parlay网关 通知给视频会议业务系统； S504, 视频会议业务系统响应于视频会议业务 的触发， 向资源服务器申请进行视频会议业务的 MCU; 以及 S506， 视频 会议业务系统获取 MCU 后， 将视频会议业务调度到 MCU 上， 并通过 Parlay网关通知 MCU发起视频会议业务， 通过 MCU建立用于视频会议 业务的网络连接。 该方法可以进一步包括以下步骤： S508, 会议发起者通 过枧频会议业务系统向用于视频会议业务的网络连接中添加其他的至少 一个会议终端。 其中， 视频会议业务系统处的会议参与者通过视频会议业务系统对 视频会议业务进行控制。会议发起者或至少一个会议终端处的会议参与者 通过会议终端对视频会议业务进行控制。 其中， 在步骤 S504中， 会议业务系统通过资源策略服务协议或私有 协议向资源服务器申请进行视频会议业务的 MCU。 其中， 如图 5B所示， 步骤 S502进一步包括以下步骤： S5022, 会 议终端将会议参数发送给软交换设备； S5024, 软交换设备响应于会议参 数， 触发视频会议业务， 并将视频会议的触发通知给 Parlay网关； S5026, Parlay网关将视频会议的触发通知给视频会议业务系统。 其中， 如图 5C所示， 步驟 S506进一步包括以下步骤： S5062, 视 频会议业务系统获取 MCU后， 将视频会议业务调度到 MCU上； S5064, 枧频会议业务系统通过 Parlay网关通知 MCU发起视频会议业务； S5066, MCU响应于发起视频会议业务的通知， 向 Parlay 网关返回 SDP信息； S5068, Parlay网关接收 SDP信息并将其发送给会议发起者所在的会议终 端， 从而建立用于视频会议业务的网络连接。 其中， 如图 5D所示， 步骤 S508进一步包括以下步碌： S5082, 会 议发起者通过软交换设备通知 Parlay网关呼叫 MCU; S5084, MCU响应 于呼叫并将其的响应结果通知的视频会议业务系统； S5086 , 视频会议业 务系统通过 Parlay网关、 Parlay网关呼叫其他的至少一个终端； S5088, 终端响应于呼叫， 并通过 Parlay网关、 Parlay网关^ 1其的响应结果通 口视 频会议业务系统， 使得其他的至少一个终端与 MCU连接， 从而向用于视 频会议业务的网络连接中添加其他的至少一个会议终端。 其中， 视频会议业务系统处的会议参与者通过视频会议业务系统将 会议控制命令通知给 Parlay网关，通过 Parlay网关通知 MUC,通过 MUC 控制视频会议。 其中， 会议发起者或至少一个会议终端的会议参与者通过至少一个 终端将会议控制命令发送给软交换设备，通过软交换设备将会议控制命令 转发给 Parlay网关， Parlay网关将会议控制命令转发给 MCU, 通过 MCU 控制视频会议。 具体地， 参考图 6, 说明根据本发明实施例的用于在终端上召开视 频会议的流程图： 步骤一， 用户通过会议终端召开枧频会议： 用户通过会议终端将会 议参数发给软交换； 软交换触发视频会议业务， 通知 Parlay网关； Parlay 网关通知视频会议业务系统；视频会议业务系统通过资源策略月艮务协议或 私有协议向资源服务器申请资源；资源服务器根据资源情况将会议调度到 相应的 MCU上， 将资源保留； 并将结果通知视频会议业务系统； 步骤二， 视频会议业务系统召开视频会议： 视频会议业务系统命令TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a network connection method and a network system for a frequency conference service. BACKGROUND OF THE INVENTION Providing multimedia services integrating voice, data and video to users on an IP network is a development goal of the communication network. With the rapid improvement of IP network bandwidth, the continuous improvement of QoS and security technologies, and the rapid growth of users' demand for multimedia communication based on IP networks, how to construct a practical multimedia communication network and how to provide rich multimedia communication services to users It has become a common concern of telecom operators and communication equipment vendors. Today's operators have two video conferencing systems, H.320 system and H.323 system. At present, most of the eDonkey conference networks based on the H.323 system are for group users such as government agencies and large enterprises and institutions. They are basically proprietary networks, and rarely communicate with public networks such as fixed telephone networks, and the business functions are relatively simple. The emerging softswitch technology provides a new multimedia service implementation. The softswitch technology of the next generation network adopts a layered network architecture and is fully open. There are obvious advantages in comprehensive access capabilities, service provisioning, network management, user authentication, authentication and billing. While constructing a new generation network, it fully considers the smooth transition of existing networks, and integrates voice, data, multimedia and other services into one, truly realizing the customization of the business. On the other hand, the continuous development of IP-based data networks provides a realistic basis for the development of multimedia services based on softswitch technology. Therefore, it is an inevitable choice for operators to develop video conferencing services in next-generation networks. At present, the conference TV operation in the next generation network can only be realized by the H.323 video conferencing system and the softswitch interworking method, that is, all terminals access through the softswitch and utilize the network in the H.323 conference television system. The shou and softswitches communicate with each other in the way of neighboring gatekeepers, as shown in Figure 1. This way is actually two separate networks, just using softswitch Access function. In particular, it is independent in business and requires two independent operating systems, so that the video conferencing service cannot be effectively integrated with the various services provided by the softswitch. Not conducive to operator maintenance and business development. Therefore, there is a need for a new network connection method and network system for video conferencing services. SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a new network connection method and network system for a video conference service to implement complete integration of a video conference network and a softswitch in a next generation network. According to an aspect of the present invention, a network connection method for a video conference service is provided, which includes the following steps: S302: A conference organizer reserves a multipoint control unit for video conference service on a video conference service system (Multipoint Control) S304, the video conference service system applies to the resource server for the video conference service MCU in response to the reservation; S306, after the video conference service system obtains the MCU, the video conference service is scheduled to the MCU, and the Parlay is notified. (It is an organization jointly sponsored by BT, Ulticom, Microsoft, Nortel, Siemens.) The gateway notifies the MCU to initiate a video conference service, and establishes a network connection for the video conference service through the MCU. According to another aspect of the present invention, a network connection method for a video conference is provided, which includes the following steps: S502: A conference initiator sends a conference parameter to a softswitch device through a conference terminal, and triggers a video conference service by using a softswitch device. And transmitting, by the Parlay gateway, the triggering of the video conference service to the video conference service system; S504, the video conference service system, in response to the trigger of the video conference service, applying to the resource server for the video conference service MCU; and the S506, the video After obtaining the MCU, the conference service system schedules the video conference service to the MCU, and notifies the MCU to initiate a video conference service through the Parlay gateway, and establishes a network connection for the video conference service through the MCU. According to still another aspect of the present invention, a network system for a video conference service is provided, including: at least one multimedia terminal having voice, video codec and data functions, connected to a softswitch device; and a Parlay gateway It is a system that provides Parlay API for developing video conferencing service applications, communicates with the video conferencing service system through the Parlay API, and communicates with the MCU device or the softswitch device through the Session Initiation Protocol (Session Initiation Protocol, The device is called SIP) protocol for communication; the softswitch device is used to provide centralized call control, access routing, and value-added service interfaces, and adaptation of various protocols, and communication with the Parlay gateway through the SIP protocol; MCU device, Providing mixing and image encoding and decoding capabilities, and for initiating conferences, implementing various control of conferences, communicating with resource policy servers through resource policy protocols, or proprietary protocols, and communicating with Parlay gateways via SIP protocol; The video conference service system is used to provide user account opening, multimedia service registration and reservation, billing information and settlement function, complete video conference service management, video conference control function, provide WEB user service function, and pass through the resource policy server. The resource policy protocol or the private protocol communicates with the Parlay gateway through the Parlay Application Programming Interface (Parlay Application Programming Interface, Parlay API); the resource policy server manages the MCU device and plays the video. The meeting entered 4 schedules, Video conference between business systems, or MCU to communicate through resource policy agreements or proprietary protocols. Through the invention, the complete integration of the video conference system and the softswitch can be realized, and the innovation of the service is more easily realized, so that the user can be provided with diversified, personalized and multimedia communication services. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of components of a conventional video conference operation system and softswitch fusion; FIG. 2 is a composition diagram of a network system for video conference according to the present invention; FIG. A flowchart of a network connection method for a video conference according to the present invention; FIG. 3B is a specific flowchart showing step S304 in the method shown in FIG. 3A; FIG. 4 is a diagram showing a user in a video according to an embodiment of the present invention; A flowchart of a video conference held on a user interface provided by the conference service system; 5A is a flowchart showing another network connection method for video conference according to the present invention; FIG. 5B is a specific flowchart showing step S502 in the method shown in FIG. 5A; FIG. 5C is a diagram showing A specific flow chart of step S506 in the method shown in FIG. 5A; FIG. 5D is a specific flow chart showing step S508 in the method shown in FIG. 5A; FIG. 6 is a view showing the terminal flow in the terminal according to the embodiment of the present invention; FIG. 7 is a flowchart showing video conferencing control performed by a user on a user interface of a video conferencing service system according to an embodiment of the present invention; and FIG. 8 is a diagram showing a user according to an embodiment of the present invention. A flowchart for performing conference control on the terminal interface. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. 2 is a composition diagram showing a network system for a video conference according to the present invention. As shown in FIG. 2, the network system for video conferencing services of the present invention includes: at least one multimedia terminal 202 having voice, video codec and data functions, connected to a softswitch device; Parlay gateway 204, which is A system for providing a Parlay API for developing a video conferencing service application, communicating with a video conferencing service system through a Parlay API, and communicating with an MCU device or a softswitch device via a SIP protocol; and a softswitch device 206 for providing centralized Call control, access routing, and value-added service interfaces, and adaptation of various protocols, communicate with the Parlay gateway through the SIP protocol; the MCU device 208 is used to provide mixing and image encoding and decoding capabilities, and is used to initiate a conference and implement The various control of the conference, the resource policy server communicates with the resource policy protocol, or the private protocol, and communicates with the Parlay gateway through the SIP protocol; the video conference service system 210 is used to provide user account opening and multimedia services for the network. Registration and booking, billing information and billing functions, and completion of video sessions Discuss business management, frequency conference control functions, provide WEB user service functions, and pass resources with the resource policy server The source policy protocol, or the private protocol communicates, and communicates with the Parlay gateway through the Parlay API; the resource policy server 212 is configured to manage the MCU device, and schedule the video conference, and the video conference service system, or the MCU. Communicate through resource policy protocols or proprietary protocols. In addition, the system can also include a server 214 for playing sound during a video conference. The at least one multimedia terminal includes at least one of the following terminals: a .323 terminal, a .320 terminal, or a SIP terminal. These multimedia terminals are connected to the softswitch device through an H.323 gateway, an H.320 gateway, or a SIP gateway, respectively. The H.323 gateway/H.320 gateway can be attached to the softswitch device as a functional entity of the softswitch device, or can be independent from the softswitch device. In addition, each protocol adaptation (H.323/SIP/H.248/MGCP) module in the softswitch device can also be isolated as a corresponding gateway device. Among them, the resource strategy system and the video conference service system can be provided together as a whole or separated as two independent parts. The PARLAY gateway can be attached to the softswitch device as a functional entity of the softswitch, or it can be independent from the softswitch device. FIG. 3A is a flow chart showing a network connection method for a video conference according to the present invention. FIG. 3B is a specific flowchart showing step S304 in the method shown in FIG. 3A. As shown in FIG. 3A, the network connection method for a video conference service according to the present invention includes the following steps: S302: A conference initiator reserves an MCU for performing a video conference service on a video conference service system; S304, the video conference service system responds to An MCU that requests a video conference service from the resource server; S306, after the video conference service system obtains the MCU, schedules the conference service to the MCU, and notifies the Parlay gateway to notify the MCU to initiate a video conference service, and establishes a video conference through the MCU. Network connection for conference business. The network connection method for the frequency conference service further includes the following steps: S308: The video conference service system calls at least one conference terminal different from the conference terminal of the conference initiator, and adds at least one conference terminal to the conference for the video conference. In the network connection. The video conference initiator controls the video conference through the video conference service system. The conference participants of at least one conference terminal control the video conference through at least one conference terminal. In step S304, the video conference service system applies to the resource server for the video conference service MCU through the resource policy service protocol or the private protocol. As shown in FIG. 3B, the step S308 includes the following steps: S3082: The video conference service system sends the call message to the MCU through the Parla gateway, and the MCU responds to the call message and reports the response result to the frequency conference service system through the Parlay gateway. S3084, the video conference service system notifies the call message to the Parlay gateway, and the Parlay gateway sends the call message to the at least one conference terminal through the softswitch device, and the at least one conference terminal responds to the call message and passes the response result through the Parlay gateway and the softswitch. The device notifies the video conference service system; and the S3086, the video conference service system notifies the MCU of the response result of the conference terminal through the Parlay gateway, so that the conference terminal communicates with the MCU, thereby adding the conference terminal to the network connection for the video conference. The conference initiator notifies the conference control command to the Parlay gateway through the video conference service system, notifies the MUC through the Parlay gateway, and controls the video conference through the MUC. The conference participant of the at least one conference terminal sends the conference control command to the softswitch device through the at least one conference terminal, and forwards the conference control command to the Parlay gateway through the softswitch device, and the Parlay gateway forwards the conference control command to the MCU, and controls the video through the MCU. meeting. Specifically, referring to FIG. 4, a flow of a video conference held by a user on a user interface provided by a video conference service system according to an embodiment of the present invention is described. Step 1: A user subscribes to a video conference through a video conference service system: a user is in a video conference service system. The video conference service system subscribes to the resource server through the resource policy service protocol or the private protocol; the resource server schedules the conference to the corresponding MCU according to the resource condition, captures the resource reservation, and notifies the video conference service system of the result. Step 2: The video conference service system convene a video conference: The video conference service system notifies the Parlay gateway to convene a conference; the Parlay gateway notifies the corresponding MCU to convene a conference; the MCU notifies the Parlay gateway of the result; the Parlay gateway then notifies the video conference service system of the result; Third, the video conferencing service system calls the terminal, and each terminal is called through the following steps: The video conference service operation system notifies the Parlay gateway to call the MCU; the Parlay gateway sends the call message to the MCU; the MCU responds and the node Notice Parlay gateway; Parlay gateway MCU response notifies video conference service system; video conferencing system notification service Parlay gateway calls the terminal; the Parlay gateway sends the call message to the softswitch; the softswitch sends the call message to the terminal (if the H.323 terminal requires the softswitch to convert the SIP message into an H.323 message); the terminal responds and the result Sending to the softswitch; the softswitch sends the call result of the terminal to the Parlay gateway (if the H.323 terminal needs a softswitch to convert the H.323 message into a SIP message); the Parlay gateway notifies the video conference service system of the call answer result of the terminal The video conference service system notifies the MCU of the terminal's call response result through the Parlay gateway; thus, the terminal joins the conference and can communicate with the MCU. 5A is a flowchart showing another network connection method for video conference according to the present invention; FIG. 5B is a specific flowchart showing step S502 in the method shown in FIG. 5A; FIG. 5C is a diagram showing A specific flowchart of step S506 in the method shown in FIG. 5A; and FIG. 5D is a specific flowchart showing step S508 in the method shown in FIG. 5A. As shown in FIG. 5A, the network connection method for video conference according to the present invention includes the following steps: S502: A conference initiator sends a conference parameter to a softswitch device through a conference terminal, and triggers a video conference service through a softswitch device, and the video The triggering of the conference service is notified to the video conference service system by the Parlay gateway; S504, the video conference service system applies to the resource server for the MCU for the video conference service in response to the trigger of the video conference service; and S506, after the video conference service system obtains the MCU, The video conference service is dispatched to the MCU, and the MCU is notified by the Parlay gateway to initiate a video conference service, and the network connection for the video conference service is established through the MCU. The method may further include the following steps: S508: The conference initiator adds another at least one conference terminal to the network connection for the video conference service by using the frequency conference conference service system. The conference participants at the video conference service system control the video conference service through the video conference service system. The conference initiator or the conference participant at the at least one conference terminal controls the video conference service through the conference terminal. In step S504, the conference service system applies to the resource server for the video conference service MCU through the resource policy service protocol or the private protocol. As shown in FIG. 5B, step S502 further includes the following steps: S5022: The conference terminal sends the conference parameter to the softswitch device; S5024, the softswitch device triggers the video conference service in response to the conference parameter, and triggers the trigger of the video conference. To the Parlay gateway; S5026, the Parlay gateway notifies the video conference service system of the trigger of the video conference. As shown in FIG. 5C, step S506 further includes the following steps: S5062: After the video conference service system acquires the MCU, the video conference service is scheduled to be sent to the MCU. S5064, the frequency conference service system notifies the MCU to initiate the video conference service through the Parlay gateway. S5066, the MCU returns SDP information to the Parlay gateway in response to the notification of initiating the video conference service; S5068, the Parlay gateway receives the SDP information and sends it to the conference terminal where the conference initiator is located, thereby establishing a network connection for the video conference service. . As shown in FIG. 5D, step S508 further includes the following steps: S5082, the conference initiator notifies the Parlay gateway to call the MCU through the softswitch device; S5084, the video conference service system in which the MCU responds to the call and notifies the response result thereof; S5086, video conference service system calls of other at least one terminal through the Parlay gateway, Parlay gateway; S5088, the terminal in response to the call, and by Parlay gateway, Parlay gateway ^ 1 response result port video conference service system thereof, such that the other of the at least A terminal is connected to the MCU to add other at least one conference terminal to the network connection for the video conference service. The conference participant at the video conference service system notifies the conference control command to the Parlay gateway through the video conference service system, notifies the MUC through the Parlay gateway, and controls the video conference through the MUC. The conference initiator or the conference participant of the at least one conference terminal sends the conference control command to the softswitch device through the at least one terminal, and forwards the conference control command to the Parlay gateway through the softswitch device, and the Parlay gateway forwards the conference control command to the MCU. , control video conferencing through the MCU. Specifically, referring to FIG. 6, a flowchart for holding a video conference on a terminal according to an embodiment of the present invention is provided: Step 1: A user holds a video conference through the conference terminal: the user sends the conference parameters to the softswitch through the conference terminal; The softswitch triggers the video conference service to notify the Parlay gateway; the Parlay gateway notifies the video conference service system; the video conference service system applies for resources to the resource server through the resource policy monthly service protocol or the private protocol; the resource server schedules the conference to the corresponding according to the resource situation. On the MCU, the resource is reserved; and the result is notified to the video conference service system; Step 2: The video conference service system holds a video conference: Video conference service system command
Parlay网关召开会议； Parlay网关通知相应的 MCU召开会议； MCU将结 果通知视频会议业务系统； 步驟三，视频会议业务系统呼叫 MCU:视频会议业务系统通过 Parlay 网关呼叫 MCU; MCU将呼叫结果通过 Parlay 网关通知视频会议业务系 统.； Parlay网关将 MCU返回的 SDP信息通知软交换； 软交换将 MCU的 SDP信息通知终端， 这样终端就成功地召开一个会议了； 步骤四， 视频会议业务系统呼叫会议中的其它终端： 枧频会议业务 系统通过 Parlay 网关呼叫 MCU; MCU将呼叫结果通过 Parlay网关通知 视频会议业务系统； 视频会议业务系统通过 Parlay 网关向软交换呼叫终 端； 软交换将和终端的呼叫结果通过 Parlay网关通知视频会议业务系统， 这样终端和 MCU就呼叫成功了。 其中， 在上述的用于视频会议的网络连接方法及系统的具体实施方 式和实施例中，会议发起者或会议参与者可以在视频会议业务系统的界面 上或终端界面上对视频会议进行控制。 参考图 7 , 说明根据本发明实施例的用户在视频会议业务系统的用 户界面上进行枧频会议控制的流程：用户在视频会议业务系统提供的会议 控制界面中进行会议控制； 视频会议业务系统将会议控制命令通知 Parlay 网关； Parlay网关将会议控制命令通知 MCU; MCU执行会议控制命令并 将结果通过 Parlay网关告诉视频会议业务系统。 参考图 8, 说明 居本发明实施例的用户在终端界面上进行会议控 制的流程： 用户在 H.323终端控制界面中进行会议控制操作； 终端将会议 控制命令发送给软交换设备； 软交换设备将会议控制命令转发给 Parlay 网关， （必要时需要将 H.323协议的会议控制命令转换成相应的 SIP会议 控制命令 ); Parlay 网关将会议控制命令发送给 MCU; MCU执行会议控 制命令并将结果通知 Parlay网关； Parlay网关将会议控制结果通知视频会 议业务系统； Parlay网关将会议控制结果通知软交换； 软交换将会议控制 结果通知终端 （需要将 SIP消息转换成 H.323消息）。 本发明的有益效果在于: 1、 可以实现视频会议系统和软交换的完全融合， 更容易实现业务的 创新， 为用户提供多样化、 个性化、 多媒体化的通信月良务。 The Parlay gateway convene a conference; the Parlay gateway notifies the corresponding MCU to convene a conference; the MCU notifies the video conference service system of the result; Step 3: The video conference service system calls the MCU: the video conference service system calls the MCU through the Parlay gateway; the MCU passes the call result through the Parlay gateway. Notifying the video conference service system; the Parlay gateway notifies the softswitch of the SDP information returned by the MCU; the softswitch notifies the terminal of the SDP information of the MCU, so that the terminal successfully convene a conference; Step 4, the video conference service system calls the conference Other terminals: The 会议frequency conference service system calls the MCU through the Parlay gateway; the MCU notifies the video conference service system through the Parlay gateway; the video conference service system calls the terminal through the Parlay gateway to the softswitch; the softswitch and the terminal call result pass the Parlay The gateway notifies the video conferencing service system that the terminal and the MCU are successful. In the foregoing specific implementation manners and embodiments of the network connection method and system for video conference, the conference initiator or conference participant may control the video conference on the interface of the video conference service system or on the terminal interface. Referring to FIG. 7, a process of performing frequency conference control on a user interface of a video conference service system according to an embodiment of the present invention is provided: a user performs conference control in a conference control interface provided by a video conference service system; and a video conference service system The conference control command notifies the Parlay gateway; the Parlay gateway notifies the MCU of the conference control command; the MCU executes the conference control command and reports the result to the video conference service system through the Parlay gateway. Referring to FIG. 8, a process for performing conference control on a terminal interface by a user in the embodiment of the present invention is illustrated: a user performs a conference control operation in an H.323 terminal control interface; a terminal sends a conference control command to a softswitch device; and the softswitch device Forward the conference control command to the Parlay gateway. (If necessary, convert the conference control command of the H.323 protocol into the corresponding SIP conference control command); the Parlay gateway sends the conference control command to the MCU; the MCU executes the conference control command and the result Notifying the Parlay gateway; the Parlay gateway notifies the video conference service system of the conference control result; the Parlay gateway notifies the softswitch of the conference control result; the softswitch notifies the terminal of the conference control result (the SIP message needs to be converted into an H.323 message). The beneficial effects of the invention are: 1. It can realize the complete integration of video conferencing system and softswitch, and it is easier to realize business innovation, and provide users with diversified, personalized and multimedia communication services.
2、 充分利用 Parlay API接口的开放性， 能够快速方便地实现新的业 务， 同时也有利于视频会议业务和其他多媒体以及增值业务融合。 2. Make full use of the openness of the Parlay API interface to quickly and easily implement new services, and also facilitate the convergence of video conferencing services and other multimedia and value-added services.
3、 简化了 MCU的协议处理， 即 MCU只需要实现 SIP协议即可， 而不需要同时实现 H.323协议等其他协议，充分利用软交换丰富的协议适 配能力。 3. Simplified protocol processing of the MCU, that is, the MCU only needs to implement the SIP protocol, and does not need to implement other protocols such as the H.323 protocol at the same time, and fully utilizes the softswitch rich protocol adaptability.
4、 整个体系结构筒单、 层次清晰， 有利于视频会议和软交换领域的 人员进行开发， 同时通过引入不同的网关来接入不同类型的终端， 具有很 好的扩展性。 从而能够方便的接入不同网络的终端。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对 于本领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发 明的保护范围之内。 4. The entire architecture is simple and clear, which is conducive to the development of personnel in the video conferencing and softswitch fields. At the same time, it introduces different gateways to access different types of terminals, which has good scalability. Thereby, it is convenient to access terminals of different networks. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权利要求书 Claim
1. 一种用于视频会议业务的网络连接方法， 其特征在于， 包括以下步 骤： A network connection method for a video conference service, comprising the following steps:
S302 , 会议发起者在视频会议业务系统上预约进行视频会议 业务的 MCU;  S302. The conference initiator reserves an MCU for performing a video conference service on the video conference service system.
S304 , 所述视频会议业务系统响应于所述预约， 向资源 艮务 器申请进行所述视频会议业务的 MCU;  S304. The video conference service system, in response to the reservation, apply to the resource server for an MCU that performs the video conference service.
S306, 所述视频会议业务系统获得所述 MCU后， 将所述视频 会议业务调度到所述 MCU上， 并通知 Parlay 网关通知所述 MCU 发起所述视频会议业务， 通过所述 MCU建立用于视频会议业务的 网络连接。  S306, after the video conference service system obtains the MCU, scheduling the video conference service to the MCU, and notifying the Parlay gateway to notify the MCU to initiate the video conference service, where the video is established by the MCU. Network connection for conference business.
2. 根据权利要求 1所述的用于视频会议业务的网络连接方法， 其特征 在于， 进一步包括以下步骤： The network connection method for a video conference service according to claim 1, further comprising the following steps:
S308 , 所述视频会议业务系统呼叫不同于所述会议发起者的 会议终端的至少一个会议终端， 将所述至少一个会议终端添力。到所 述用于视频会议的网络连接中。  S308. The video conference service system calls at least one conference terminal different from the conference terminal of the conference initiator, and adds the at least one conference terminal. Go to the network connection described for video conferencing.
3. 根据权利要求 2所述用于视频会议的网络连接方法， 其特征在于， 所述视频会议发起者通过所述视频会议业务系统对所述视频会议 进行控制。 The network connection method for video conference according to claim 2, wherein the video conference initiator controls the video conference through the video conference service system.
4. 根据权利要求 2所述的用于视频会议的网络连接方法，其特征在于， 所述至少一个会议终端的会议参与者通过所述至少一个会议终端 对所述视频会议进行控制。 The network connection method for video conference according to claim 2, wherein the conference participant of the at least one conference terminal controls the video conference by using the at least one conference terminal.
5. 根据权利要求 2 至 4 中任一项所述的用于视频会议的网络连接方 法， 其特征在于， 在所述步踝 S304 中， 所述视频会议业务系统通 过资源策略服务协议或私有协议向所述资源服务器申请进行所述 视频会议业务的 MCU。 根据权利要求 5所述的用于视频会议的网络连接方法，其特征在于， 所述步驟 S308包括以下步骤： The network connection method for video conference according to any one of claims 2 to 4, wherein in the step S304, the video conference service system passes a resource policy service protocol or a private protocol. Applying to the resource server for an MCU that performs the video conference service. The network connection method for a video conference according to claim 5, wherein the step S308 comprises the following steps:
S3082, 所述视频会议业务系统将呼叫消息通过所述 Parlay网 关发送给所述 MCU,所述 MCU响应所述呼叫消息并将其的响应结 果通过所述 Parlay网关通知所述视频会议业务系统；  S3082, the video conference service system sends a call message to the MCU through the Parlay gateway, and the MCU responds to the call message and sends a response result to the video conference service system by using the Parlay gateway.
S3084 , 所述视频会议业务系统将所述呼叫消息通知给所述 Parlay网关， 所述 Parlay网关通过软交换设备将所述呼叫消息发送 给所述至少一个会议终端， 所述至少一个会议终端响应所述呼叫消 息并将其的响应结果通过所述 Parlay网关和所述软交换设备通知所 述视频会议业务系统; 以及  S3084, the video conference service system notifies the call message to the Parlay gateway, and the Parlay gateway sends the call message to the at least one conference terminal by using a softswitch device, where the at least one conference terminal responds to the Decoding the call message and notifying the video conference service system through the Parlay gateway and the softswitch device;
S3086, 所述视频会议业务系统通过所述 Parlay网关将所述会 议终端的响应结果通知所述 MCU,使得所述会议终端与所述 MCU 互通， 从而将所述会议终端添加到所述用于视频会议的网络连接 中。 根据权利要求 6所述的用于视频会议的网络连接方法，其特征在于 , 所述会议发起者通过所述视频会议业务系统将会议控制命令通知 给所述 Parlay网关， 通过所述 Parlay网关通知所述 MUC, 通过所 述 MUC控制所述视频会议。 根据权利要求 6所述的用于视频会议的网络连接方法，其特征在于， 所述至少一个会议终端的会议参与者通过所述至少一个会议终端 将会议控制命令发送至软交换设备， 通过所述软交换设备将所述会 议控制命令转发给所述 Parlay网关，所述 Parlay网关将所述会议控 制命令转发给所述 MCU, 通过所述 MCU控制所迷视频会议。 一种用于视频会议的网络连接方法 , 其特征在于， 包括以下步骤： S3086, the video conference service system notifies the MCU of the response result of the conference terminal by using the Parlay gateway, so that the conference terminal communicates with the MCU, thereby adding the conference terminal to the video for The network connection of the conference. The network connection method for a video conference according to claim 6, wherein the conference initiator notifies the Parlay gateway of the conference control command through the video conference service system, and notifies the conference through the Parlay gateway. Said MUC, controlling the video conference through the MUC. The network connection method for a video conference according to claim 6, wherein the conference participant of the at least one conference terminal sends a conference control command to the softswitch device by using the at least one conference terminal, The softswitch device forwards the conference control command to the Parlay gateway, and the Parlay gateway forwards the conference control command to the MCU, and controls the video conference by using the MCU. A network connection method for video conference, characterized in that it comprises the following steps:
S502 , 会议发起者通过会议终端向软交换设备发送会议参数， 通过所述软交换设备触发视频会议业务， 并将所述视频会议业务的 触发通过所述 Parlay网关通知给视频会议业务系统; S502, the conference initiator sends a conference parameter to the softswitch device by using the conference terminal, and the video conference service is triggered by the softswitch device, and the trigger of the video conference service is notified to the video conference service system by using the Parlay gateway.
S504 , 所述视频会议业务系统响应于所述视频会议业务的触 发， 向资源服务器申请进行视频会议业务的 MCU; 以及 S506， 所述视频会议业务系统获取所述 MCU后， 将所述视频 会议业务调度到所述 MCU上， 并通过 Parlay 网关通知所述 MCU 发起所述视频会议业务， 通过所述 MCU建立用于视频会议业务的 网络连接。 S504, the video conference service system, in response to the triggering of the video conference service, applying to the resource server for an MCU that performs a video conference service; S506. After the video conference service system acquires the MCU, the video conference service is scheduled to be sent to the MCU, and the MCU is notified by the Parlay gateway to initiate the video conference service, and the video is established by the MCU. Network connection for conference business.
10. 根据权利要求 9所述的用于视频会议的网络连接方法，其特征在于， 进一步包括以下步 -踝： 10. The network connection method for video conference according to claim 9, further comprising the following steps - 踝:
S508 , 所述会议发起者通过所述视频会议业务系统向所述用 于视频会议业务的网络连接中添加其他的至少一个会议终端。  S508. The conference initiator adds another at least one conference terminal to the network connection for the video conference service by using the video conference service system.
11. 根据权利要求 10 所述的用于视频会议的网络连接方法， 其特征在 于， 所述视频会议业务系统处的会议参与者通过所述视频会议业务 系统对所述视频会议业务进行控制。 The network connection method for a video conference according to claim 10, wherein the conference participant at the video conference service system controls the video conference service through the video conference service system.
12. 根据权利要求 10 所述的用于视频会议的网络连接方法， 其特征在 于， 所述会议发起者或所述至少一个会议终端的会议参与者通过所 述会议终端对所述视频会议业务进行控制。 The network connection method for a video conference according to claim 10, wherein the conference initiator or the conference participant of the at least one conference terminal performs the video conference service through the conference terminal. control.
13. 根据权利要求 10 所述的用于视频会议的网络连接方法， 其特征在 于， 在所述步骤 S504 中， 所述会议业务系统通过资源策略月良务十办 议或私有协议在所述步向资源^^务器申请进行视频会议业务的 MCU。 The network connection method for video conference according to claim 10, wherein in the step S504, the conference service system passes the resource policy, the monthly service, or the private protocol, in the step Apply to the resource server for the video conference service MCU.
14. 根据权利要求 10 所述的用于视频会议的网络连接方法， 其特征在 于， 所述步驟 S502进一步包括以下步驟： The network connection method for a video conference according to claim 10, wherein the step S502 further comprises the following steps:
S5022 , 所述会议终端将所述会议参数发送给软交换设备； S5022: The conference terminal sends the conference parameter to a softswitch device.
S5024, 所迷软交换设备响应于所述会议参数， 触发视频会议 业务， 并将所述视频会议的触发通知给 Parlay网关； S5024. The softswitch device triggers a video conference service in response to the conference parameter, and notifies the trigger of the video conference to the Parlay gateway.
S5026, 所述 Parlay网关将所述视频会议的触发通知给所述视 频会议业务系统。 S5026: The Parlay gateway notifies the video conference service system of the trigger of the video conference.
15. 根据权利要求 10 所述的用于视频会议的网络连接方法， 其特征在 于， 所述步骤 S506进一步包括以下步骤： The network connection method for video conference according to claim 10, wherein the step S506 further comprises the following steps:
S5062, 所述视频会议业务系统获取所述 MCU后， 将所述视 频会议业务调度到所述 MCU上；  S5062, after the video conference service system acquires the MCU, scheduling the video conference service to the MCU;
S5064 , 所述视频会议业务系统通过所述 Parlay网关通知所述 MCU发起所述视频会议业务；  S5064, the video conference service system notifies the MCU to initiate the video conference service by using the Parlay gateway;
S5066, 所述 MCU响应于发起所述视频会议业务的通知， 向 所述 Parlay网关送回 SDP信息；  S5066: The MCU sends back SDP information to the Parlay gateway in response to initiating the notification of the video conference service.
S5068 , 所述 Parlay 网关接收所述 SDP信息并将其发送给所 迷会议发起者所在的会议终端，从而建立用于视频会议业务的网络 连接。  S5068: The Parlay gateway receives the SDP information and sends the SDP information to a conference terminal where the conference initiator is located, thereby establishing a network connection for the video conference service.
16. 根据权利要求 10 所述的用于视频会议业务的网络连接方法， 其特 征在于， 所述步驟 S508进一步包括以下步骤： The network connection method for a video conference service according to claim 10, wherein the step S508 further comprises the following steps:
S5082, 所述会议发起者通过所述软交换设备通知所述 Parlay 网关呼叫所述 MCU;  S5082, the conference initiator informs the Parlay gateway to call the MCU by using the softswitch device;
S5084, 所述 MCU响应于所述呼叫并将其的响应结果通知所 述的视频会议业务系统；  S5084, the MCU is responsive to the call and notifying the video conference service system of the response result thereof;
S5086 , 所述视频会议业务系统通过所述 Parlay 网关、 所述 Parlay网关呼叫所述其他的至少一个终端；  S5086, the video conference service system calls the other at least one terminal by using the Parlay gateway and the Parlay gateway;
S5088, 所述终端响应于所述呼叫， 并通过所述 Parlay网关、 所述 Parlay网关将其的响应结果通知所述视频会议业务系统，使得 所述其他的至少一个终端与所述 MCU连接， 从而向所述用于视频 会议业务的网络连接中添加所述其他的至少一个会议终端。 根据权利要求 11 所述的用于视频会议业务的网络连接方法， 其特 征在于， 所述视频会议业务系统处的会议参与者通过所述视频会议 业务系统将会议控制命令通知给所迷 Parlay网关， 通过所述 Parlay 网关通知所述 MUC, 通过所述 MUC控制所述视频会议。 S5088, the terminal responds to the call, and notifies the video conference service system of the response result of the Parlay gateway and the Parlay gateway, so that the other at least one terminal is connected to the MCU, thereby Adding the other at least one conference terminal to the network connection for the video conference service. The network connection method for the video conference service according to claim 11, wherein the conference participant at the video conference service system notifies the conference control command to the Parlay gateway through the video conference service system. Notifying the MUC through the Parlay gateway, and controlling the video conference by the MUC.
18. 根据权利要求 12 所述的用于视频会议业务的网络连接方法， 其特 征在于， 所述会议发起者或所述至少一个会议终端的会议参与者通 过所述至少一个终端将会议控制命令发送给所述软交换设备， 通过 所述软交换设备将所述会议控制命令转发给所述 Parlay网关， 所述 Parlay网关将所述会议控制命令转发给所述 MCU, 通过所述 MCU 控制所述视频会议。 The network connection method for a video conference service according to claim 12, wherein the conference initiator or the conference participant of the at least one conference terminal sends a conference control command by using the at least one terminal And the softswitch device forwards the conference control command to the Parlay gateway by using the softswitch device, where the Parlay gateway forwards the conference control command to the MCU, and controls the video by using the MCU meeting.
19. 一种用于视频会议业务的网络系统， 其特征在于， 包括： 19. A network system for a video conferencing service, comprising:
至少一个多媒体终端， 具有语音、 视频编解码能力及数据功 能， 连接在软交换设备上；  At least one multimedia terminal having voice, video codec and data functions, connected to the softswitch device;
Parlay网关，其是为开发视频会议业务应用提供 Parlay API的 系统， 与视频会议业务系统之间通过所述 Parlay API进行通讯， 并 与 MCU设备、 或所述软交换设备通过 SIP协议进行通讯；  a Parlay gateway, which is a system for providing a Parlay API for developing a video conferencing service application, communicates with the video conferencing service system through the Parlay API, and communicates with the MCU device or the softswitch device through a SIP protocol;
所述软交换设备， 用于提供集中的呼叫控制、 接入路由、 及 增值业务接口， 以及各种协议的适配， 与所述 Parlay网关通过所述 SIP协议进行通讯， 并与所述至少一个多媒体终端通讯；  The softswitch device is configured to provide centralized call control, access routing, and a value-added service interface, and an adaptation of various protocols, and communicate with the Parlay gateway through the SIP protocol, and the at least one Multimedia terminal communication;
所述 MCU设备， 用于提供混音、 图像编解码能力， 并用于发 起会议、 实现对会议的各种控制， 与资源策略服务器之间通过资源 策略协议、 或私有协议进行通讯， 并与所述 Parlay 网关通过所述 SIP协议进行通讯；  The MCU device is configured to provide a mixing and image encoding and decoding capability, and is used for initiating a conference, implementing various control of the conference, communicating with the resource policy server by using a resource policy protocol, or a proprietary protocol, and The Parlay gateway communicates through the SIP protocol;
所述视频会议业务系统， 用于为网络提供用户开户、 多媒体 业务登记与预约、 计费信息与结算功能以及完成视频会议业务管 理、 视频会议控制功能， 提供 WEB用户服务功能， 与所述资源策 略服务器之间通过所述资源策略协议、 或所述私有协议进行通讯， 并与所述 Parlay网关之间通过所述 Parlay API进行通讯；  The video conference service system is configured to provide a user account opening, a multimedia service registration and reservation, a charging information and a settlement function, and complete a video conference service management and a video conference control function, and provide a WEB user service function, and the resource policy. Communicating between the servers by using the resource policy protocol or the private protocol, and communicating with the Parlay gateway through the Parlay API;
所述资源策略服务器， 用于管理所述 MCU设备， 并对视频会 议进行调度， 与所述视频会议业务系统、 或所述 MCU之间通过所 述资源策略协议或所述私有协议进行通讯。 根据权利要求 19 所述的用于视频会议业务的网络系统， 其特征在 于， 所述至少一个多媒体终端通过相应的网关连接在所述软交换设 备上。 The resource policy server is configured to manage the MCU device, and schedule a video conference, and communicate with the video conference service system or the MCU by using the resource policy protocol or the private protocol. The network system for video conferencing services according to claim 19, wherein the at least one multimedia terminal is connected to the softswitch device through a corresponding gateway.
21. 根据权利要求 20所述的用于视频会议业务的网络系统 , 其特征在 于，所述多媒体终端包括下列终端中的至少一种： H.323终端、 H.320 终端、 或 SIP终端。 21. The network system for video conferencing services according to claim 20, wherein the multimedia terminal comprises at least one of the following terminals: an H.323 terminal, an H.320 terminal, or a SIP terminal.
22. 根据权利要求 20所述的用于视频会议业务的网络系统， 其特征在 于， 所述资源策略服务器并入所述视频会议业务系统中。 22. The network system for video conferencing services according to claim 20, wherein the resource policy server is incorporated in the video conferencing service system.
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