WO2007124690A1 - Procédé de réalisation de service de lecture sonore et dispositif de traitement de ressource multimédia - Google Patents

Procédé de réalisation de service de lecture sonore et dispositif de traitement de ressource multimédia Download PDF

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Publication number
WO2007124690A1
WO2007124690A1 PCT/CN2007/001402 CN2007001402W WO2007124690A1 WO 2007124690 A1 WO2007124690 A1 WO 2007124690A1 CN 2007001402 W CN2007001402 W CN 2007001402W WO 2007124690 A1 WO2007124690 A1 WO 2007124690A1
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WIPO (PCT)
Prior art keywords
playback
parameter
protocol
sound
media resource
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PCT/CN2007/001402
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English (en)
Chinese (zh)
Inventor
Cheng Chen
Jiangping Feng
Zhiyong Xu
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Huawei Technologies Co., Ltd.
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.)
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007124690A1 publication Critical patent/WO2007124690A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers

Definitions

  • the present invention relates to the field of voice playback technologies, and in particular, to a method for implementing a voice playback service and a media resource processing device.
  • a voice play service is a commonly used function provided by a telecommunication network, and generally includes: basic service sounds, such as ring back tone, ring tone, busy tone, etc.; intelligent service tone, including fixed tone and variable tone.
  • the fixed tone means that the content of the sound played by each user is the same at each moment. For example, when the called user is turned off, the system will prompt "Your mobile phone is turned off, which is a fixed tone; fixed tone It can be a pre-recorded voice, or a piece of text.
  • the text is converted to speech by TTS (Text to Speech) technology and then played to the user.
  • TTS Text to Speech
  • the system will prompt "You still have 50 yuan", where “you still have” is a fixed tone; "50 yuan” is based on the actual balance, generally based on “50” "This number, the unit is “yuan money”, this information generates the sound of "50 yuan", and then combines the two into a complete voice segment to play to the user.
  • a media resource control device such as a media gateway controller
  • a media resource processing device such as a media gateway
  • MGC media gateway controller
  • MGW media gateway
  • the Media Gateway Control Protocol is the main protocol for communication between MGW12 and MGC11.
  • H.248/MeGaCo Gateway Control Protocol
  • MGCP Media Gateway Control Protocol
  • various resources on the MGW 12 are abstractly represented as terminals.
  • the terminal is further divided into physical terminals and temporary terminals.
  • the former represents some semi-permanent physical entities, such as TDM (Time Division Multiplexing) channels, and the latter represents public resources released after temporary application, such as RTP (Real-Time Transport Protocol). ) flow and so on.
  • the combination between terminals is abstracted as a context. Up and down
  • the text may contain a plurality of terminals, and thus the topology is used to describe the interrelationship between the terminals. For a terminal that has not been associated with another terminal, it is included by a special context called an empty context.
  • command requests and responses between the MGC and the MGW include add, modify, delete, move, audit value, audit capability, notification, service change.
  • Command parameters also known as descriptors, are classified as attributes, signals, events, statistics. Parameters with business dependencies are logically aggregated into packages.
  • the MGC 11 instructs the MGW 12 to play the voice information to the user through the H.248 protocol, and the MGW generates the actual voice and plays it to the user.
  • the H.248.7 protocol is an extension of the H.248 protocol that defines a common voice playback method, including:
  • This method relies on the default value defined by some information between the MGC and the MGW, such as the playback identifier, which requires the MGC and the MGW to represent the same voice content for the same identifier, otherwise it may cause an incorrect playback.
  • the MGC and the MGW may be provided by different equipment vendors, so it is difficult to ensure the consistency of the default information, which leads to difficulty in interworking; and the information on the specific type, value format, voice type and language type of the variable tone. No specific definition is given. Different devices have different interfaces and implementation methods. It is difficult for MGCs and MGWs of different vendors to communicate with each other.
  • the H.248.9 protocol is another extension of the H.248 protocol. It defines a more complex voice playback method called Advanced Voice Service Pack, which includes:
  • a common playback method is defined for fixed and variable sounds: You can specify the playback content, playback volume, playback speed, playback repeat count, and the time interval between each repetition.
  • the name of the playback file is determined by means of a URI (Uniform Resource Identifier), which avoids requiring the same playback identifier to be configured on the MGC and the MGW.
  • URI Uniform Resource Identifier
  • variable sound including variable sound type, parameter format, such as broadcast
  • variable value such as "50 yuan”
  • parameter format such as broadcast
  • the type is required to be “money”
  • the format is “integer in units of dollars”
  • the commonly used variable sound information such as date, time, and week.
  • the speech parameters are incompletely defined, and the defined usage methods are unclear.
  • the playback point can only play the service tone, so it is more monotonous; in addition, only a small number of voice attributes are defined, and the specific usage of these attributes when playing the recording is not provided.
  • the H.248.7 protocol since the H.248.7 protocol has a large number of applications on the network, the H.248.9 protocol does not provide an implementation scheme compatible with H.248.7. This will inevitably affect the use of existing devices and increase network operation costs.
  • the embodiment of the invention provides a method for implementing a voice playing service and a media resource processing device capable of playing sound to a plurality of terminals.
  • An embodiment of the present invention provides a method for implementing a voice playback service, where the method includes: determining a playback parameter according to a service characteristic, where the playback parameter includes at least a playback direction parameter; and the media resource control device to the media resource processing device The message indicating that the terminal plays the sound carries the playback parameter; the media resource processing device instructs the playback point to play the sound to the one or more other terminals related to the service according to the playback direction parameter.
  • the embodiment of the present invention further provides a media resource processing device, including: an information parsing unit, configured to parse a playback parameter corresponding to a service characteristic from a message from a media resource control device, where the parsed playback
  • the parameter includes at least a playback direction parameter
  • a playback processing unit configured to indicate, according to the playback parameter provided by the information analysis unit, a playback point playback, and the playback target of the playback point is the playback direction parameter indication
  • One or more other terminals associated with the service including: an information parsing unit, configured to parse a playback parameter corresponding to a service characteristic from a message from a media resource control device, where the parsed playback The parameter includes at least a playback direction parameter, and a playback processing unit, configured to indicate, according to the playback parameter provided by the information analysis unit, a playback point playback, and the playback target of the playback point is the playback direction parameter indication One or more other terminals associated with the service.
  • determining, including The playback parameter of the tone direction parameter is then carried in the message that the media resource control device sends the media resource processing device to indicate that the terminal plays the tone; so that the media resource processing device can indicate the playback point according to the playback direction parameter.
  • One or more other terminals associated with the service play, thereby satisfying the need to play a plurality of terminals.
  • FIG. 1 is a schematic diagram of networking of MGW and MGC in the prior art
  • FIG. 3 is a schematic diagram of an application scenario in which a sound is required to be played in different directions according to an embodiment of the present invention
  • FIG. 4 is a flow chart of interaction between an MGC and an MGW in the application scenario shown in FIG. 3;
  • FIG. 5 is a schematic diagram of an application scenario for playing a multi-service user in an embodiment of the present invention.
  • FIG. 6 is a flow chart of interaction between the MGC and the MGW in the application scenario shown in FIG. 5;
  • FIG. 7 is a flow chart of interaction between MGC and MGW in a service application that needs to simultaneously play voice and background sound in an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of a media resource processing device according to an embodiment of the present invention.
  • the playback parameter is determined according to the needs of the service feature.
  • the media resource control device sends the message indicating the playback of the terminal to the media resource processing device
  • the playback parameter is carried, so that the media resource processing device can Based on these playback parameters, the playback point is indicated to play to one or more other terminals associated with the service.
  • the embodiment of the present invention sets the H.248.7 protocol compatibility parameter in the H.248.9 protocol, so that the media resource processing device can determine that the H needs to be played according to the compatible parameters. .248.7 The tone corresponding to the playback identifier defined by the protocol.
  • FIG. 2 shows an implementation flow of an embodiment of a method according to the present invention, which includes the following steps: Step 201: Determine a playback parameter according to a service characteristic.
  • the media resource control device needs to customize the corresponding playback parameters according to the characteristics of the service.
  • the media resource control device may automatically generate the playback parameters required for the service according to the service type, and may also manually pre-configure the playback parameters.
  • the embodiment of the present invention extends the existing H.248.9 protocol, and adds the representative service characteristics to the playback package. Some of the playback parameters enable the media resource control device to determine these parameter values based on business needs. The specific parameter addition and customization process will be described in detail later.
  • Step 202 When the media resource control device sends a message indicating that the terminal plays the sound to the media resource processing device, the device carries the customized playback parameter, that is, the playback parameter is carried in the message indicating that the terminal plays the sound.
  • Step 203 The media resource processing device instructs the playback point to play a sound to one or more other terminals related to the service according to the playback parameter.
  • the playback point in the Context is required to simultaneously play the same voice to all users in a multi-party service call.
  • the playback point is to perform playback in multiple directions according to the instructions of the media resource control device.
  • the H.248.7 protocol compatible parameter is set on the basis of the existing H.248.9 protocol, and the media resource processing device identifies that the playback identifier corresponding to the H.248.7 protocol needs to be played according to the H.248.7 protocol compatible parameter. The sound.
  • the basic intelligent sound grammar package may be extended, and the media resource control device may issue the sound identifier through the parameter (that is, the newly added enumerated type) by adding a new enumerated type, and then the media resource processing device according to the
  • the parameter can be judged to be the playback identifier defined by the H248.7 protocol, and then the sound corresponding to the playback identifier is played; meanwhile, the speech variable syntax package of the H248.9 protocol is extended, and H. is added by adding a new variable type.
  • the variable type and format in the 248.7 protocol conform to the variable type format defined in the H.248.9 protocol.
  • the embodiment of the present invention increases the syntax definition of the voice identifier of the H.248.9 protocol.
  • a new enum type identifier "Enum://”, passing this parameter (ie new enum The type "Enum: ⁇ ") enables the network device based on the H.248.9 protocol to recognize the playback identifier defined by the H.248.7 protocol, and this newly added enumeration type is called the H.248.7 protocol compatible parameter.
  • the media resource control device sends the identifier to the media resource processing device (including the H.248.7 protocol compatible parameter and the playback identifier defined by the H.248.7 protocol), and the media resource processing device is configured according to the "Enum://" recognizes that the subsequent information is the playback identifier defined by the H.248.7 protocol. Therefore, the media resource processing device can play the tone corresponding to the playback identifier defined by the H.248.7 protocol.
  • provSegSpec simple I ftpurl I httpurl I fileurl I enumID
  • enumID "enum://" enumann
  • enumann represents the playback identifier corresponding to the H.248.7 protocol, that is, the playback identifier defined by the H.248.7 protocol.
  • variable types are not defined in the H.248.7 protocol, they are set by the developer, and the type format of these variables is specified in the H.248.9 protocol. Therefore, in order to ensure network devices supporting different protocols. Capable of interworking, the present invention adds a new variable type "enumeration type" syntax definition, each enumeration value corresponds to a variable type, the value and syntax format is as shown in Table 1: Enumeration value corresponding variable syntax description
  • Tone value playback identification and duration See H.248.9 protocol definition
  • Enumeration value defines the type of variable represented by the enumeration value
  • Subclass line Subtype corresponding to the definition of each variable in H.248.9;
  • H.248.9 protocol is compatible with the H.248.7 protocol
  • the H.248.7 protocol function can be implemented by the H.248.9 protocol, and the impact on the existing implementation is small.
  • the existing network device based on the H.248.9 protocol can identify some parameters defined by the H.248.7 protocol, thereby achieving compatibility.
  • the purpose of the H.248.7 protocol is to save network operating costs while providing rich service tones.
  • the embodiment of the present invention extends the existing H.248.9 protocol, and adds a playback parameter representing the service characteristic in the playback package, when the media resource control device processes the media resource.
  • the device carries the parameters indicating that the terminal plays the sound, so that the media resource processing device can indicate, according to the parameters, that one or more terminals related to the service perform the required playback action.
  • a session is established between UserA and UserB.
  • the voice is played from the Ta terminal.
  • the service may need to be played to UserA. It may also need to be played to UserB. It may also need to be placed simultaneously with two users. sound.
  • the embodiment of the present invention adds a playback direction parameter (one of the playback parameters mentioned in the previous embodiment) to the playback package of the H.248.9 protocol, and when playing with H.248.9. Need to explicitly specify the playback direction: internal (terminal in Context, Tb, UserB in Figure 3), external (terminal outside Context, UserA in Figure 3), or two-way playback (including internal and external) Play in both directions).
  • the playback direction parameter can be added to the relevant playback signal, and the default value of the parameter can be defined, for example, the default value is "external playback".
  • the definition of this parameter is added to the playback signal of the AASB (Advanced Voice Service Packet) packet of the H.248.9 protocol.
  • AASB Advanced Voice Service Packet
  • the "Direction” parameter is used to indicate the playback direction, and the Both refers to both internal and external playback.
  • the interaction process between MGC and MGW in the application scenario shown in Figure 3 is shown in Figure 4:
  • the MGC sends an add terminal request to the MGW to indicate the terminal that needs to be played (the cartridge is called a playback point);
  • the MGW After receiving the request, the MGW adds a terminal response to the MGC response;
  • the MGC sends a message to the MGW indicating that the terminal plays the sound, and the message carries a parameter indicating the playing direction (ie, the sounding direction parameter), indicating that the terminal needs to play the sound outward or inward or in both directions;
  • the MGW plays the playback point and responds to the MGC with the terminal playback result response message.
  • This playback method is not only suitable for playing recordings, but also for TTS (text language conversion) playback.
  • TTS text language conversion
  • the embodiment of the present invention adds a special playback indication parameter to the playback parameter of the playback package of the H.248.9 protocol, which indicates that the MGW creates a terminal dedicated to playback as a playback point, and passes
  • the playback direction parameter indicates that the playback point is only used for internal playback, so that the sound played by the playback point is not visible to the outside, and the sound played by the playback point is not affected by other signals and events. In other words, regardless of whether there are other signals and events at the playback point, the internal playback of multiple terminals is performed simultaneously.
  • the special playback indication parameter When implemented on the MGW, it can be determined according to the special playback indication parameter whether special playback resources are needed, such as assigning a virtual terminal (such as the Ta terminal in FIG. 5) for playback only, according to the indication of the playback direction parameter, this The playback point can only be used for internal playback. It is forbidden to perform other operations on this playback point, such as using other events and signals.
  • special playback resources such as assigning a virtual terminal (such as the Ta terminal in FIG. 5) for playback only, according to the indication of the playback direction parameter, this The playback point can only be used for internal playback. It is forbidden to perform other operations on this playback point, such as using other events and signals.
  • it is also possible to allocate a capable service terminal to complete the playback task that is, to use a capable service terminal as a playback point.
  • special playback indicator parameters is added to the AASB package of the H.248.9 protocol. as follows:
  • the "Specialtermination” parameter is used to indicate playback on a terminal dedicated to playback. It should be noted that the parameter information of the 8.3.1 ⁇ 6 parameter not given in this example can refer to the parameter information example in the previous advanced voice service package, which is not described in this example.
  • the MGC sends a request to the MGW to add a terminal T1, indicating the terminal T1 that needs to be played;
  • the MGW After receiving the request, the MGW adds a terminal T1 response to the MGC response;
  • the MGC sends an add terminal T2 to the MGW, indicating the terminal T2 that needs to play the sound;
  • the MGW After receiving the request, the MGW adds a terminal T2 response to the MGC response;
  • the MGC sends an add terminal T3 request to the MGW, indicating the terminal T3 that needs to be played; 6. After receiving the request, the MGW responds to the MGC by adding a terminal T3 response;
  • the MGC sends an add terminal Ta request to the MGW, and instructs the terminal to play the sound, and carries a special playback indication parameter in the message, to indicate that the terminal Ta used only for playback is the playback point; and in the message Carrying the playback direction parameter to indicate that the above playback point is only played inward.
  • the MGW plays the playback point Ta to the terminal T1, the terminal ⁇ 2, and the terminal ⁇ 3, and responds to the MGC with the terminal playback result response message.
  • this playback method is not only suitable for playing recordings, but also for TTS (text language conversion) playback.
  • the embodiment of the present invention adds a background sound indication parameter (also a kind of playback parameter) in the playback package of the 24248.9 protocol, and at the same time, specifies whether the background sound needs to be played during playback.
  • the playback parameters sent to the MGW by the MGC include both the playback direction parameter and the background sound indication parameter, then the playback point is played according to the direction indicated by the playback direction parameter, specifically, the background sound is mixed with the service tone. The sound after the sound.
  • the definition of the background sound indication parameter is added to the playback signal of the AASB packet of the 24248.9 protocol.
  • the example is as follows:
  • the "Backgroundvoice” parameter is the background sound indication parameter, which is used to indicate the information of the background sound to be played while playing. If the background sound indication parameter is not carried in the message, the background sound can be played back by default.
  • the background sound information description method is the same as the recording description method. You can also specify parameters such as volume and language type.
  • FIG. 7 shows the interaction process between MGC and MGW in this business application:
  • the MGC sends an add terminal request to the MGW to indicate the terminal (ie, the playback point) that needs to be played;
  • the MGW After receiving the request, the MGW adds a terminal response to the MGC response;
  • the MGC sends a message indicating that the terminal plays the sound to the MGW, and carries the playback parameter and the background sound parameter in the message, indicating whether the playback terminal needs to simultaneously play the background sound and the volume, gender, etc. of the background sound during playback.
  • the MGW causes the playback terminal to play the sound, and responds to the MGC with the terminal playback result response message.
  • this playback method is not only suitable for playing recordings, but also for TTS (text language conversion) playback.
  • the media resource control device sends a voice attribute parameter (also one of the playback parameters) to the media resource processing device according to the user's playback requirement; the media resource processing device selects according to the voice attribute parameter. Play different voice segments, or convert the recorded segments according to the attribute requirements, and then play them to the user, that is, the media resource processing device indicates that the playback point is played by the voice attribute parameter.
  • Putting methods such as language type, whether to reread, male and female pronunciation, age of pronunciation, tone of pronunciation, volume, and speed. If re-reading is instructed, the voice is added to the accented level by the accent processing, and then played to the user.
  • Other male and female pronunciations, the age of the pronunciation, the pronunciation of the pitch, the volume, and the speed may select different speech segments or correspondingly process a speech segment.
  • the media resource control device needs to be sent to the media resource processing device.
  • the message indicating the playback of the terminal not only carries the playback direction parameter and the special playback indication parameter, but also carries the background sound indication parameter, so that the media resource processing device can indicate the playback point to the corresponding terminal according to the parameters. .
  • the application can be combined with the foregoing H.248.7 protocol compatibility scheme, for example, the message that the media resource control device sends to the media resource processing device to indicate the playback of the terminal not only carries the playback direction parameter, the special playback indication parameter.
  • the background sound indication parameters may also carry H.248.7 protocol compatible parameters.
  • the playback requirements of different services can be better met, the service audio play mode and content can be enriched, and the existing network devices can be compatible, thereby greatly saving network costs.
  • FIG. 8 is a schematic structural diagram of an embodiment of a media resource processing device.
  • the media resource processing device in this embodiment mainly includes an information parsing unit 81 and a playback processing unit 82.
  • the terminal creating unit 83 and the mixing unit 84 are further included.
  • the internal components and the mutual connection relationship are further introduced.
  • the media resource processing device works according to the indication of the media resource control device.
  • the media resource processing device parses the message from the media resource control device through the information parsing unit 81.
  • a playback parameter corresponding to the service characteristic the parsed playback parameter includes at least a playback direction parameter; and further, the playback processing unit 82 is configured according to the information
  • the playback parameter provided by the analyzing unit 81 indicates that the playback point is played, and the playback target of the playback point is one or more other terminals related to the service indicated by the playback direction parameter. It can be seen that the media resource processing device can play the sound in the direction indicated by the parsed playback direction parameter, thereby satisfying the requirement for simultaneous playback of multiple terminals.
  • the media resource processing device when the playback parameter parsed by the information parsing unit 81 further includes a special playback terminal indication parameter, the media resource processing device further creates a mere playback function according to the special playback terminal indication parameter by the terminal creation unit 83.
  • the terminal provides the terminal to the playback processing unit 82 as a playback point. Since the terminal (ie, the playback point) created under the indication of the special playback terminal indication parameter is only used for playback, this playback service is guaranteed to be unaffected by other signals and events.
  • the media resource processing device further passes the background sound specified by the background sound indication parameter and the playback point through the mixing unit 84.
  • the service tones to be played are mixed and processed to form a mixed sound.
  • the sound played by the playback processing unit 82 is the sound after the mixing processing provided by the mixing unit 84.
  • the playback parameter parsed by the information parsing unit 81 may further include a voice attribute parameter, including but not limited to one or more of the following parameters: language type parameter, whether to reread the parameter, male and female pronunciation parameters, pronunciation Age parameters, pronunciation pitch parameters, volume parameters, and speed parameters.
  • a voice attribute parameter including but not limited to one or more of the following parameters: language type parameter, whether to reread the parameter, male and female pronunciation parameters, pronunciation Age parameters, pronunciation pitch parameters, volume parameters, and speed parameters.
  • the network operation cost is saved.
  • the embodiment of the present invention sets the H.248.7 protocol compatibility parameter based on the existing H.248.9 protocol, and further, the media resource processing device can identify that the H.248.7 protocol definition needs to be played according to the H.248.7 protocol compatibility parameter. The tone corresponding to the tone.
  • the playback processing unit 84 can The playback identifier defined by the H.248.7 protocol identified by the H.248.7 protocol compatible parameter is played, and then the tone corresponding to the playback identifier defined by the H.248.7 protocol is played. While the invention has been described by the embodiments of the present invention, it will be understood that

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

Abstract

La présente invention concerne un procédé de réalisation de service de lecture sonore: les paramètres de lecture sonore sont déterminés en fonction des caractéristiques de service, lesdits paramètres de lecture sonore comportant au moins un paramètre d'orientation de lecture sonore; un message, qui indique au terminal d'effectuer une lecture sonore et est transmis depuis le dispositif de commande de traitement de ressource multimédia, transporte ledit paramètre de lecture sonore; le dispositif de traitement de ressource multimédia indique au point de lecture sonore d'effectuer la lecture sonore vers un autre ou d'autres terminaux associés au dit service en fonction dudit paramètre d'orientation de lecture sonore. L'invention concerne également un dispositif de traitement de ressource multimédia. La lecture sonore peut être dirigée vers une pluralité de terminaux grâce à la technologie selon la présente invention.
PCT/CN2007/001402 2006-04-27 2007-04-26 Procédé de réalisation de service de lecture sonore et dispositif de traitement de ressource multimédia WO2007124690A1 (fr)

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CN101364935B (zh) * 2007-08-08 2011-06-08 华为技术有限公司 媒体资源控制、处理装置、会话录制方法及系统
CN101465918A (zh) * 2007-12-17 2009-06-24 华为技术有限公司 服务下发方法、服务执行方法、计算侧及交换侧
CN101247565B (zh) * 2008-03-21 2011-07-13 中兴通讯股份有限公司 声音信号播放方法
CN101651665B (zh) * 2008-08-14 2013-04-17 华为技术有限公司 一种实现媒体资源播放状态检测的控制方法、装置及系统
CN103327156A (zh) * 2013-06-25 2013-09-25 腾讯科技（深圳）有限公司 一种语音文件输出方法及装置
CN103729189B (zh) * 2013-12-31 2017-01-04 福建星网锐捷通讯股份有限公司 基于lua的播放协议转换方法、系统、终端

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WO2002013394A2 (fr) * 2000-08-10 2002-02-14 Siemens Aktiengesellschaft Procede d'affectation de canaux de transmission dans un systeme de radiocommunication
CN1501651A (zh) * 2002-11-14 2004-06-02 华为技术有限公司 帧中继语音网络中的呼叫选路方法
CN1592236A (zh) * 2003-09-03 2005-03-09 华为技术有限公司 一种测试语音质量的方法及装置

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CN1501651A (zh) * 2002-11-14 2004-06-02 华为技术有限公司 帧中继语音网络中的呼叫选路方法
CN1592236A (zh) * 2003-09-03 2005-03-09 华为技术有限公司 一种测试语音质量的方法及装置

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