WO2009121268A1 - 一种媒体流中拨号信息的处理方法、装置和系统 - Google Patents

一种媒体流中拨号信息的处理方法、装置和系统 Download PDF

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Publication number
WO2009121268A1
WO2009121268A1 PCT/CN2009/070893 CN2009070893W WO2009121268A1 WO 2009121268 A1 WO2009121268 A1 WO 2009121268A1 CN 2009070893 W CN2009070893 W CN 2009070893W WO 2009121268 A1 WO2009121268 A1 WO 2009121268A1
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Prior art keywords
dialing information
media gateway
media
media stream
attribute
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PCT/CN2009/070893
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English (en)
French (fr)
Inventor
林扬波
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华为技术有限公司
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Priority to EP20090726510 priority Critical patent/EP2252023A4/en
Publication of WO2009121268A1 publication Critical patent/WO2009121268A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/64Hybrid switching systems
    • H04L12/6418Hybrid transport
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10Architectures or entities
    • H04L65/102Gateways
    • H04L65/1043Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60Network streaming of media packets
    • H04L65/75Media network packet handling
    • H04L65/765Media network packet handling intermediate

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to processing dialing information in a media stream under a service and bearer separation architecture. Background technique
  • the Media Gateway Controller (MGC) and Media Gateway (MG) are two key components of the packet network under the service and bearer separation architecture.
  • the MGC is responsible for the service control function, and the MG is responsible for the media bearer function, thereby separating the service control plane and the media bearer plane, thereby fully sharing network resources, upgrading equipment and service expansion, and reducing development and maintenance costs.
  • the MG can establish media streaming with other devices, such as User Agent (UA) devices acting on behalf of the user.
  • UA User Agent
  • the MG serves as a media server for users and there is information interaction between the MG and the UA.
  • the media server plays a prompt voice of the input card number and/or password information to the user, and then the user inputs the information by dialing, and the information is usually transmitted from the UA through the media stream in the form of dual tone multi-frequency (DTMF) digital.
  • DTMF dual tone multi-frequency
  • the embodiment of the invention provides a method, a device and a system for processing dialing information in a media stream, so that the media gateway can process the dialing information in the media stream.
  • an embodiment of the present invention provides a method for processing dialing information in a media stream, where the method includes: the media gateway receives a media stream carrying dialing information; and the dialing information removing attribute is carried in the media stream.
  • the dialing information is reserved or removed, and the dialing information removal attribute is set by the media gateway controller to be set by the media gateway or pre-configured on the media gateway.
  • the embodiment of the present invention further provides a media gateway, where the media gateway includes: an attribute setting unit, configured to set a dialing information removal attribute according to a command request sent by the media gateway controller or pre-configured on the media gateway; When receiving the media stream carrying the dialing information, the dialing information in the media stream is removed or retained according to the set dialing information removal attribute.
  • an attribute setting unit configured to set a dialing information removal attribute according to a command request sent by the media gateway controller or pre-configured on the media gateway.
  • the embodiment of the present invention further provides a media gateway controller, where the media gateway controller includes: a command sending unit, configured to send a command to the media gateway, to instruct the media gateway to set the dialing information removal attribute.
  • the embodiment of the invention further provides a processing system for dialing information in a media stream, including a media gateway controller and a media gateway.
  • the media gateway controller is configured to send a command to the media gateway to instruct the media gateway to set a dialing information removal attribute.
  • the media gateway is configured to set a dialing information removal attribute according to the indication of the media gateway controller or a pre-configuration on the media gateway, and remove the attribute according to the set dialing information when receiving the media stream carrying the dialing information. Remove or retain dialing information from the media stream.
  • the embodiment of the invention has at least the following advantages:
  • a method and device for processing dialing information in a media stream provided by an embodiment of the present invention First, configure the dialing information removal attribute to enable the media gateway to remove or retain the dialing information in the media stream according to the set attributes.
  • FIG. 1 is a schematic diagram of networking of an MG and an MGC used in an embodiment of the present invention
  • FIG. 2 is a flowchart of an embodiment of the present invention
  • FIG. 3 is a flow chart of another embodiment of the present invention.
  • FIG. 1 it is a networking diagram of a media gateway controller MGC and a media gateway MG in a service and bearer separation architecture according to an embodiment of the present invention.
  • the (media) gateway control protocol is the main protocol for communication between the MG and the MGC.
  • the two protocols are H.248/MeGaCo (Gateway Control Protocol) and MGCP (Media Gateway Control Protocol).
  • Terminations various resources on the MG are abstractly represented as Terminations.
  • the terminal is further divided into a physical terminal and a temporary (Ephemeral) terminal.
  • the former represents some semi-permanent physical entities, such as TDM time slots, etc., and the latter represents public resources released after temporary application, such as RTP flow, etc. .
  • the MG as a whole is represented by a special terminal called a root terminal.
  • the association between terminals is abstracted as a context.
  • the context can contain multiple terminals, so the topology is used to describe the interrelationship between the terminals.
  • a null (Null) context For a terminal that has not been associated with another terminal, it is included by a special context called a null (Null) context.
  • Termination and Context operations This operation is done by the request (Request) and response (Reply) of the command (Command) between the MGC and the MG.
  • Command types include Add, Modify, Subtract, Move, AuditValue, AuditCapabilities, Notify, ServiceChange.
  • Command parameters also known as descriptors (Descriptor), are classified as Property, Signal, Event, Statistic, and so on. In order to facilitate the logical aggregation of parameters with business relevance into packages.
  • the MGC's control of the MG can be directed to the flow on the terminal or terminal.
  • the terminal state ( TerminationState ) descriptor is used to include non-stream specific characteristics on the terminal, such as service state (ServiceState ), event buffer control ( EventBufferControl ), and the like.
  • a media-specific feature is included through a Media (Descriptor) descriptor, which contains a series of Stream descriptors. Each stream descriptor is for a single stream, and contains local control (LocalControl), local (Local), and remote (Remote) descriptors.
  • the local control descriptor includes flow-related control information such as mode (Mode), reserved group (ReserveGroup), and reserved value (Reserve Value).
  • the local and remote descriptors include the characteristics of the stream received by the local end and the remote end, such as an address and a port, a codec algorithm, and the like, and are in the form of SDP.
  • a property is used to indicate whether dialing information, such as DTMF digits, needs to be removed from the media stream.
  • This attribute can be defined in an existing package or in a new package, in the format of "package ID/attribute ID”.
  • the new package is named "Media Stream Dial Information Removal (MSdir)”
  • the attribute is named "Dial Information Removal” (to dir).
  • the format of msdir/dir is used.
  • the attribute is Boolean.
  • On (On) indicates that the dialing information is removed from the media stream
  • Off (Off) indicates that the dialing information is not removed from the media stream.
  • the default that is, the attribute is not set).
  • the value is off.
  • This attribute is set for a stream to control whether dialing information is removed on the stream, so it is set for a stream to include
  • the flow control information is used in the LocalControl descriptor.
  • the MGC When the MGC needs to control the removal of dialing information from a media stream on the MG, the MGC sets the above dir attribute to the MG and sets its value to On.
  • the MGC can transfer this property setting via Add, Move, Modify, etc., and is carried in the LocalControl descriptor for the media stream.
  • the MG After the MG receives the attribute setting from the MGC, the detected dialing information will be removed from the media stream before the media stream is passed to the next transmission (e.g., other terminal) or processing (e.g., transcoding). If the MGC sets the value of the above dir attribute to Off, the MG will not perform operations for removing dialing information from the media stream. If the above dir attribute is not set by the MGC, the MG will process it according to its default value of Off.
  • an embodiment of the present invention includes the following steps:
  • Step 201 The media gateway receives the media stream carrying the dialing information.
  • Step 202 The media gateway processes the dialing information carried in the media stream according to the dialing information removal attribute, where the media stream dialing information removal attribute is instructed by the media gateway controller to be set or pre-configured on the media gateway.
  • the media gateway acts as a media server to interact with the user to perform card number and/or password input operations, and the specific process
  • Step 301 The media gateway controller sets a dialing information removal attribute to the media gateway, and the media gateway saves the setting for subsequent processing.
  • Step 302 After establishing a media stream between the media gateway and the user agent, playing a prompt voice inputting the card number and/or password information to the user agent;
  • Step 303 The card number and/or password information input by the user by dialing is transmitted by the user agent to the media gateway through the media stream in the form of DTMF digits;
  • Step 304 The media gateway extracts the dialing information transmitted in the DTMF digital form from the received media stream, and uses the card number and/or password input by the user for subsequent processing;
  • Step 305 The media gateway determines, according to the settings saved in step 301, whether to remove the DTMF digits from the media stream and perform corresponding processing.
  • Step 306 The media gateway transmits the media stream to the next transmission (for example, other terminals) Or processing (such as code conversion) links.
  • the media gateway controller of the embodiment of the present invention removes or retains the dialing information attribute in the media stream according to the value of the set attribute by sending a command to the media gateway to set the dialing information removal attribute.
  • FIG. 4 is a structural diagram of a system according to an embodiment of the present invention.
  • the system includes a media gateway controller 40 and a media gateway 41.
  • the media gateway controller includes a command sending unit 401, configured to send a command to the media gateway 41, and instruct the media gateway to set a dialing information removal attribute, and the command may be an add command, a move command, or a modify command.
  • the media gateway includes a media stream receiving unit 411, an attribute setting unit 412, a processing unit 413, and a transmitting module 414.
  • the attribute setting unit 412 is configured to set a dialing information removal attribute according to a command of the media gateway controller 40 or a pre-configuration of the media gateway 41.
  • the media stream receiving unit 411 is configured to receive a media stream.
  • the processing unit 413 is configured to process the dialing information according to the dialing information removal attribute set by the attribute setting unit, and then transmit the media stream to the next transmission (for example, another terminal) or processing (when the received media stream carries the dialing information) For example, the code conversion) link. It further includes a deletion module 4131.
  • the deleting module 4131 is configured to remove the dialing information from the media stream when the dialing information removal attribute set by the attribute setting unit is on, or the dialing set in the attribute setting unit When the information removal attribute takes a value of off, the dialing information is retained in the media stream. If the dialing information removal attribute is not set, the processing is performed according to the default value off.
  • the sending module 414 is configured to: after the processing unit removes or retains the dialing information in the media stream, forward the media stream to a next transmission or processing link.
  • the media gateway controller sends a command to the media gateway or pre-configures on the media gateway to set the dialing information removal attribute according to the requirement, so that the media gateway can remove or retain the dialing information in the media stream according to the set attribute.
  • the present invention can be implemented by hardware, and can also add necessary general hardware by software.
  • the platform is implemented based on the understanding that the technical solution of the present invention can be embodied in the form of a software product that can be stored in a non-volatile storage medium.
  • a computer device (may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Description

一种媒体流中拨号信息的处理方法、 装置和系统 本申请要求于 2008 年 3 月 31 日提交中国专利局, 申请号为 200810066441.6, 发明名称为 "一种媒体流中拨号信息的处理方法和 装置"的中国专利申请的优先权, 其全部内容通过引用结合在本申请 中。 技术领域
本发明实施例涉及通讯技术领域,特别是业务与承载分离架构下 媒体流中拨号信息的处理。 背景技术
媒体网关控制器(MGC )和媒体网关(MG )是业务与承载分 离架构下的分组网络的两个关键构件。 MGC负责业务控制功能, MG负责媒体承载功能, 藉此实现业务控制平面和媒体承载平面的 分离, 从而充分共享网络资源, 筒化设备升级和业务扩展, 降低 开发和维护成本。
在 MGC的控制下, MG可以与其它设备, 例如代表用户的用 户代理 (UA )设备, 建立媒体流传送。 在某些业务场景中, MG 作为媒体服务器为用户提供服务, 并且在 MG与 UA之间存在信 息交互。 一个典型场景是媒体服务器向用户播放一段输入卡号和 / 或密码信息的提示语音, 然后用户通过拨号输入所述信息, 这些 信息通常以双音多频(DTMF )数字的形式通过媒体流从 UA传输 给 MG。 MG需要从接收到的媒体流中提取这些 DTMF数字信息, 并且如果这些信息对该媒体流的后续传输或处理环节不再需要 时, 应将这些信息从该媒体流中去除, 否则有可能带来处理性能 浪费、 敏感信息泄漏等问题。
发明人发现现有技术至少存在以下问题:
在 MGC-MG 分离架构下, 缺乏有效机制可以使 MGC 控制 MG对媒体流中的拨号信息进行去除。 发明内容
本发明实施例提供一种媒体流中拨号信息的处理方法、装置和系 统, 使媒体网关能够对媒体流中的拨号信息进行处理。
为实现本发明的目的,本发明实施例提供一种媒体流中拨号信息 的处理方法, 该方法包括: 媒体网关接收携带拨号信息的媒体流; 根 据拨号信息去除属性对所述媒体流中携带的拨号信息进行保留或去 除, 所述拨号信息去除属性由媒体网关控制器指示所述媒体网关设 置, 或在所述媒体网关上预先配置。
本发明实施例还提供一种媒体网关, 该媒体网关包括: 属性设置 单元,用于根据媒体网关控制器发送的命令请求或者在该媒体网关上 的预先配置设置拨号信息去除属性; 处理单元, 用于在接收到携带拨 号信息的媒体流时,根据设置的拨号信息去除属性去除或保留媒体流 中的拨号信息。
本发明实施例还提供一种媒体网关控制器,该媒体网关控制器包 括: 命令发送单元, 用于向媒体网关发送命令, 指示媒体网关设置拨 号信息去除属性。
本发明实施例还提供一种媒体流中拨号信息的处理系统, 包括媒 体网关控制器和媒体网关,
所述媒体网关控制器, 用于向所述媒体网关发送命令, 指示所述 媒体网关设置拨号信息去除属性;
所述媒体网关,用于根据所述媒体网关控制器的指示或者在所述 媒体网关上的预先配置设置拨号信息去除属性,在接收到携带拨号信 息的媒体流时,根据设置的拨号信息去除属性去除或保留媒体流中的 拨号信息。
与现有技术相比, 本发明实施例至少具有以下优点:
本发明实施例提供的媒体流中拨号信息的处理方法和装置,根据 先配置来设置拨号信息去除属性,可以使媒体网关按照设置的属性去 除或保留媒体流中的拨号信息。 附图说明
图 1是本发明实施例所采用的 MG和 MGC组网示意图; 图 2是本发明一个实施例的流程图;
图 3是本发明另一实施例的流程图;
图 4是本发明实施例的系统结构图。 具体实施方式
为使本发明的技术方案更加清楚明白,以下参照附图并列举实施 例, 对本发明进一步详细说明。
如图 1所示,为本发明实施例业务与承载分离架构下媒体网关控 制器 MGC与媒体网关 MG的组网示意图。
(媒体)网关控制协议是 MG和 MGC之间通信的主要协议, 应 用较为广泛的有 H.248/MeGaCo (网关控制协议)和 MGCP (媒体网 关控制协议) 两种协议。
以 H.248 为例, MG 上的各种资源被抽象表示为终端 ( Termination )。终端又分为物理( Physical )终端和临时( Ephemeral ) 终端, 前者代表一些具有半永久存在性的物理实体, 例如 TDM时隙 等, 后者代表一些临时申请用后释放的公共资源, 例如 RTP流等。 另以被称为根 ( Root )终端的特殊终端来代表 MG整体。 终端之间的 关联被抽象表示为上下文(Context )。 上下文可以包含多个终端, 因 而以拓朴(Topology )来描述终端间的相互关系。 对于还未与其它终 端发生关联的终端, 由一个被称为空(Null )上下文的特殊上下文来 包含。
基于上述抽象连接模型, 业务与承载之间的交互实际上就是对 Termination和 Context的操作。 这种操作通过 MGC和 MG之间的命 令(Command ) 的请求(Request )和响应 (Reply )来完成。 命令类 型包括增加 ( Add )、修改 ( Modify )、删减 ( Subtract )、移动 ( Move )、 审计值( AuditValue )、 审计能力( AuditCapabilities )、 通报( Notify )、 服务改变( ServiceChange )。 命令参数, 也称为描述符( Descriptor ), 被分类为属性( Property )、信号( Signal )、事件( Event )、统计( Statistic ) 等。为了方便将具有业务相关性的参数从逻辑上聚合为包( Package )。
MGC对 MG的控制可以针对终端或终端上的流。 通过终端状态 ( TerminationState )描述符来包括终端上非流特有的特性, 例如服务 状态 ( ServiceState )、 事件緩沖控制 ( EventBufferControl )等。 通过 媒体 ( Media )描述符来包括终端上流特有的特性, 其包含一系列流 ( Stream ) 描述符。 每个流描述符针对单个流, 又包含本端控制 ( LocalControl )、 本端 (Local ) 和远端 (Remote )描述符。 本端控 制描述符包括流相关的控制信息, 例如模式 (Mode )、 预留组 ( ReserveGroup )和预留值(Reserve Value )等。 本端和远端描述符 分别包括本端和远端所接收的流的特征, 例如地址和端口、 编解码算 法等, 采用 SDP的形式。
因此为了 MGC控制 MG对媒体流中的拨号信息进行去除, 首先 需要对(媒体) 网关控制协议进行扩展。 具体方法如下:
通过一个属性(Property ) 来表示是否需要从媒体流中去除拨号 信息, 例如 DTMF数字。 该属性可以定义在现有包(Package )或新 的包中, 以 "包标识 /属性标识" 的格式使用。 例如将该新包命名为 "媒体流拨号信息去除 ( Media Stream Dial Information Removal, 标 识为 msdir ) 包", 该属性命名为 "拨号信息去除(Dial Information Removal, 标口、为 dir )" , 以 "msdir/dir" 的格式使用。
该属性为布尔 (Boolean )类型, 取值开 (On )表示从媒体流中 去除拨号信息, 取值关 (Off )表示不从媒体流中去除拨号信息, 缺 省 (即该属性未被设置) 时取值为关。 该属性针对某个流进行设置, 控制在该流上是否去除拨号信息,因而在针对某个流设置以包含对该 流的控制信息的 LocalControl描述符中使用。
当 MGC需要控制对 MG上的某个媒体流去除其中的拨号信息 时, MGC向 MG设置上述 dir属性, 并将其取值设置为 On。 MGC 可以通过 Add、 Move, Modify等命令传送该属性设置, 携带在针对 该媒体流的 LocalControl描述符中。 MG从 MGC接收到该属性设置 后, 在将该媒体流传给下一传输(例如其它终端 )或处理(例如编码 转换)之前, 将会从该媒体流中去除检测到的拨号信息。 若 MGC将 上述 dir属性取值设置为 Off, 则 MG将不进行有关从该媒体流去除 拨号信息的操作。 若 MGC未设置上述 dir属性, 则 MG将按照其缺 省取值为 Off处理。
请参阅图 2, 为本发明的一个实施例, 包括如下步骤:
步骤 201: 媒体网关接收携带拨号信息的媒体流;
步骤 202: 媒体网关根据拨号信息去除属性对所述媒体流中携带 的拨号信息进行处理,所述媒体流拨号信息去除属性由媒体网关控制 器指示所述媒体网关设置或在媒体网关上预先配置。
请参与图 3, 为本发明的另一个实施例。 本实施例中, 媒体网关 作为媒体服务器与用户交互进行卡号和 /或密码输入操作, 具体流程
:¾口下:
步骤 301: 媒体网关控制器向媒体网关设置拨号信息去除属性, 媒体网关保存该设置供后续处理;
步骤 302: 媒体网关与用户代理之间建立媒体流后, 向用户代理 播放输入卡号和 /或密码信息的提示语音;
步骤 303: 用户通过拨号输入的卡号和 /或密码信息以 DTMF数 字的形式通过媒体流由用户代理传输给媒体网关;
步骤 304:媒体网关从接收到的媒体流中提取以 DTMF数字形式 传输的拨号信息, 作为用户输入的卡号和 /或密码供后续处理;
步骤 305: 媒体网关根据步骤 301中保存的设置确定是否从该媒 体流中去除 DTMF数字并进行相应的处理;
步骤 306: 媒体网关将该媒体流传给下一传输(例如其它终端) 或处理(例如编码转换)环节。
本发明实施例的媒体网关控制器根据需要通过向媒体网关发送 命令设置拨号信息去除属性,可以使媒体网关按照设置的属性的取值 去除或保留媒体流中的拨号信息属性。
请参阅图 4, 为本发明实施例的系统结构图。 该系统包括媒体网 关控制器 40和媒体网关 41。
该媒体网关控制器包括命令发送单元 401 , 用于向媒体网关 41 发送命令, 指示媒体网关设置拨号信息去除属性, 该命令可以为添加 命令、 移动命令或修改命令等。
该媒体网关包括媒体流接收单元 411、 属性设置单元 412、 处理 单元 413和发送模块 414。
该属性设置单元 412用于根据媒体网关控制器 40的命令或者对 媒体网关 41的预先配置设置拨号信息去除属性。
该媒体流接收单元 411用于接收媒体流。
该处理单元 413用于在接收到媒体流携带拨号信息时,根据属性 设置单元设置的拨号信息去除属性对拨号信息进行处理,然后再将该 媒体流传给下一传输(例如其它终端 )或处理(例如编码转换 )环节。 其进一步包括删除模块 4131。 该删除模块 4131用于在所述属性设置 单元设置的所述拨号信息去除属性取值为 on时, 从所述媒体流中去 除所述拨号信息,或者在所述属性设置单元设置的所述拨号信息去除 属性取值为 off时, 在所述媒体流中保留所述拨号信息。 若所述拨号 信息去除属性未被设置, 则按照取缺省值 off处理。
该发送模块 414 用于在所述处理单元去除或保留所述媒体流中 的拨号信息后, 将所述媒体流传给下一传输或处理环节。
本发明实施例中根据需要通过媒体网关控制器向媒体网关发送 命令或者在媒体网关上预先配置来设置拨号信息去除属性,可以使媒 体网关按照设置的属性去除或保留媒体流中的拨号信息。
通过以上的实施方式的描述, 本领域的技术人员可以清楚地了 解到本发明可以通过硬件实现,也可以可借助软件加必要的通用硬件 平台的方式来实现基于这样的理解,本发明的技术方案可以以软件产 品的形式体现出来, 该软件产品可以存储在一个非易失性存储介质
(可以是 CD-ROM, U盘, 移动硬盘等) 中, 包括若干指令用以使 得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等) 执行本发明各个实施例所述的方法。
总之, 以上所述仅为本发明的较佳实施例而已, 并非用于限定本 发明的保护范围。 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。

Claims

权利要求
1、 一种媒体流中拨号信息的处理方法, 其特征在于, 该方法包 括:
媒体网关接收携带拨号信息的媒体流;
根据拨号信息去除属性对所述媒体流中携带的拨号信息进行保 留或去除,所述拨号信息去除属性由媒体网关控制器指示所述媒体网 关设置, 或在所述媒体网关上预先配置。
2、 如权利要求 1所述的方法, 其特征在于, 根据拨号信息去除 属性对所述媒体流中携带的拨号信息进行保留或去除, 具体为 FF1A 当所述拨号信息去除属性取值为开时,从所述媒体流中去除所述 拨号信息; 或
当所述拨号信息去除属性取值为关时,在所述媒体流中保留所述 拨号信息; 或
当所述拨号信息去除属性未被设置时, 按照其缺省值为关处理。
3、 如权利要求 1所述的方法, 其特征在于, 所述媒体流拨号信 息去除属性由媒体网关控制器向所述媒体网关设置, 具体为:
媒体网关控制器将所述拨号信息去除属性携带在针对所述媒体 流的本地控制描述符中发送给所述媒体网关,指示所述媒体网关根据 所述拨号信息去除属性的设置对所述媒体流中携带的拨号信息进行 处理。
4、 如权利要求 3所述的方法, 其特征在于, 所述本地控制描述 符携带在添加、 移动或修改命令中发送给所述媒体网关。
5、 如权利要求 1至 4任一项所述的方法, 其特征在于, 所述方 法还包括:
所述媒体网关对所述媒体流中携带的拨号信息进行处理后传送 给下一传输或处理环节。
6、 一种媒体网关, 其特征在于, 该媒体网关包括: 属性设置单元,用于根据媒体网关控制器的指示或者在该媒体网 关上的预先配置设置拨号信息去除属性;
处理单元, 用于在接收到携带拨号信息的媒体流时, 根据设置的 拨号信息去除属性去除或保留媒体流中的拨号信息。
7、 如权利要求 6所述的媒体网关, 其特征在于, 所述处理单元 包括:
删除模块,用于在所述属性设置单元设置的所述拨号信息去除属 性取值为开时, 从所述媒体流中去除所述拨号信息。
8、 如权利要求 6所述的媒体网关, 其特征在于, 还包括: 媒体流接收单元, 用于接收媒体流。
9、 如权利要求 6所述的媒体网关, 其特征在于, 还包括: 发送模块,用于在所述处理单元去除或保留所述媒体流中的拨号 信息后, 将所述媒体流传给下一传输或处理环节。
10、一种媒体网关控制器,其特征在于,该媒体网关控制器包括: 命令发送单元, 用于向媒体网关发送命令, 指示媒体网关设置拨 号信息去除属性。
11、 一种媒体流中拨号信息的处理系统, 其特征在于, 包括媒体 网关控制器和媒体网关,
所述媒体网关控制器, 用于向所述媒体网关发送命令, 指示所述 媒体网关设置拨号信息去除属性;
所述媒体网关,用于根据所述媒体网关控制器的指示或者在所述 媒体网关上的预先配置设置拨号信息去除属性,在接收到携带拨号信 息的媒体流时,根据设置的拨号信息去除属性去除或保留媒体流中的 拨号信息。
12、 如权利要求 11所述的系统, 其特征在于, 所述媒体网关还 用于接收媒体流, 在去除或保留所述媒体流中的拨号信息后, 将所述 媒体流传给下一传输或处理环节。
PCT/CN2009/070893 2008-03-31 2009-03-19 一种媒体流中拨号信息的处理方法、装置和系统 WO2009121268A1 (zh)

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