WO2011130987A1 - 一种基于voip的传真方法及其系统 - Google Patents
一种基于voip的传真方法及其系统 Download PDFInfo
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- WO2011130987A1 WO2011130987A1 PCT/CN2010/076379 CN2010076379W WO2011130987A1 WO 2011130987 A1 WO2011130987 A1 WO 2011130987A1 CN 2010076379 W CN2010076379 W CN 2010076379W WO 2011130987 A1 WO2011130987 A1 WO 2011130987A1
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- WIPO (PCT)
- Prior art keywords
- fax
- gateway device
- facsimile
- state
- signal
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
- H04N1/32765—Initiating a communication
- H04N1/32771—Initiating a communication in response to a request, e.g. for a particular document
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/327—Initiating, continuing or ending a single-mode communication; Handshaking therefor
- H04N1/32765—Initiating a communication
- H04N1/32771—Initiating a communication in response to a request, e.g. for a particular document
- H04N1/32784—Initiating a communication in response to a request, e.g. for a particular document using a voice request
Definitions
- the present invention relates to the field of mobile communications, and in particular, to voice transmission based on internet protocol
- the terminal equipment on the network such as the Next Generation Network (NGN, Next Generation Network) and the IP Multimedia Subsystem (IMS) (the terminal equipment is mainly a gateway type device) realizes the fax method used by the fax. Fax is mainly realized by controlled T38 and controlled T30; the existing fax method is largely limited by the protocol compatibility between multiple types of products and the core network where various types of terminal devices are located, terminal equipment The configuration is also relatively complicated. For example, the controlled implementation of the terminal equipment produced by each terminal equipment manufacturer is different, and the T38 or T30 fax method is also used, but the controlled mode is different. In addition, when using the T30 fax mode or the T38 fax mode, you need to perform related configuration on the terminal device and the softswitch.
- NTN Next Generation Network
- IMS IP Multimedia Subsystem
- SDP Session Descriptive Protocol
- the SDP profile configured on each softswitch is not standardized in the sending SDP signaling, or the bearer mode used in the controlled mode configured by each terminal device is different. There is a compatibility problem in practical applications, which leads to a problem that the fax failure rate is high. Summary of the invention
- the invention provides a VOIP-based facsimile method and a system thereof, which improve compatibility between gateway devices, so as to improve the success rate of fax.
- a fax method for voice transmission VOIP based on internet protocol comprising:
- the second gateway device at the fax receiving end upon receiving the second fax signal for characterizing the receiving of the fax, switches the state of the second gateway device to the fax state and receives the fax using the encoding mode.
- a fax system for voice transmission VOIP based on internet protocol comprising a first gateway device at a fax transmitting end and a second gateway device at a fax receiving end, wherein:
- the first gateway device is configured to, when receiving the first fax signal for characterizing the sending of the fax, switch the state of the first gateway device to a fax state, and send the identifier by using an encoding manner corresponding to the fax state. Fax
- the second gateway device is configured to, when receiving the second fax signal for characterizing the receiving the fax, switch the state of the second gateway device to the fax state, and receive the fax.
- the first gateway device at the fax transmitting end and the second gateway device at the fax receiving end respectively switch the respective states to the same fax state after receiving the fax signal, and convert the encoding mode to the fax state.
- the corresponding coding mode overcomes the problem that the compatibility between the different gateway devices is poor due to the configuration protocol or/and the compatibility between the core network, and the compatibility between the first gateway device and the second gateway device is improved. Therefore, the success rate of transmitting the fax content between the gateway devices is improved; and the technical solution of the present invention does not require complicated configuration of each gateway device, thereby simplifying the complexity of the fax process and improving the fax efficiency. . DRAWINGS
- 1 is a flowchart of a method for implementing a fax according to an embodiment of the present invention
- 2 is a signaling flowchart of implementing fax in an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a VOIP-based facsimile system according to an embodiment of the present invention. detailed description
- the method of the present method is a first fax device that initiates a fax, and a second fax device that receives a fax, as an example, detailing the technical solution of the present invention. description of.
- Step 101 The first fax device starts a fax sending function, and sends a first fax signal for characterizing the sending of the fax to the first gateway device where it is located.
- the first gateway device can be a VOIP gateway device.
- Step 102 When the first gateway device detects the fax signal sent by the first fax device, the first gateway device switches the current state of the first gateway device to the first fax state (the first fax state is a preset fax state, which may be a fax device in advance agreed by the gateway device and the second gateway device, and transmitting the fax to the second gateway device by using a first encoding manner corresponding to the first fax state.
- the first fax state is a preset fax state, which may be a fax device in advance agreed by the gateway device and the second gateway device, and transmitting the fax to the second gateway device by using a first encoding manner corresponding to the first fax state.
- Step 103 The second fax device starts the fax receiving function, and sends a second fax signal for characterizing the receiving of the fax to the second gateway device where the second fax device is located, and the second gateway device is a VOIP gateway device.
- Step 104 After detecting the second fax signal sent by the second fax device, the second gateway device switches the current state of the second gateway device to the first fax state, and uses the first corresponding to the first fax state.
- the encoding mode receives the fax sent by the first gateway device.
- the first facsimile device implements sending a fax to the second facsimile device, specifically: the first facsimile device transmits the facsimile content to the first gateway device through a Public Switched Telephone Network (PSTN); the first gateway device uses the T30 The controlled manner transparently transmits the fax content to the second gateway device; the second gateway device sends the fax content to the first through the PSTN Two fax devices.
- PSTN Public Switched Telephone Network
- the DSP driving state ie, the first fax state
- the first coding mode corresponding to the fax vbd state is the G.711 coding mode.
- the fax device in order to prevent the fax device from transmitting a non-fax signal after starting the fax sending function, such as a MODEM dialing signal (the MODEM dialing signal may include a CED Reverse signal, a CED signal, an ANSAMREV signal, etc.), the fax signal is sent, thereby causing the fax signal to be sent.
- the gateway device mistakenly considers that the detected signal is a signal initiated by the MODEM device, thereby setting the current state to the MODEM state, thereby causing the fax to fail.
- the first fax device starts the fax sending function
- the second gateway Within a period of time after receiving the CED signal sent by the first facsimile device (according to experience, the time threshold may be set to 5 seconds), if no fax signal sent by the first facsimile device is detected, The CED signal is reported to the upper layer processing program of the DSP driver, and its current state is switched to the MODEM state, and when the fax signal sent by the first fax device is detected, the current state is switched to the preset first fax state. And enter the fax process; and, at the end of the fax process After that, the first gateway device reports the received CED signal to the upper layer handler of the DSP driver for subsequent related processes.
- the current coding mode of the gateway device in the process step 102 or the step 104 is a preset first coding mode
- the current coding mode does not need to be converted, and the current coding is directly used. the way.
- the first gateway device and the second gateway device follow the first coding mode.
- the fax is realized during the voice call between the facsimile devices, and the fax is transmitted. After the process is completed, the process is resumed to the voice call.
- the step 101 of the foregoing process of the technical solution of the present invention further includes the step 100.
- the method further includes the step 106, wherein: step 100, the first fax device and the second The fax device establishes a voice call through an existing voice call setup process.
- Step 106 After the fax process ends, the first gateway device and the second gateway device do not need to report the information about the end of the fax process to the upper layer processing program of the DSP driver, and resume the voice call state before the fax process, so that the user can pass the voice. The call knows if the fax has been successfully carried out.
- the gateway device in the embodiment of the present invention may be an integrated access device (IAD, Integrated Access Device); the coding mode of the gateway device includes coding modes such as G.729, G.723, and G.711.
- the technical solution of the present invention is not limited to the application scenario of the fax, and can also be applied to the MODEM dialing scenario, specifically: at the sending end of the MODEM service, the fax device starts the MODEM service sending function, and sends a MODEM dialing signal to the gateway device where the gateway is located, the gateway When the device detects the MODEM dialing signal sent by the fax device, the current state is switched to the MODEM vbd state.
- the fax device starts the MODEM service receiving function, and sends a MODEM dialing signal to the gateway device where the gateway device is located, and the gateway device receives the signal.
- the current state is switched to the MODEM vbd state; the fax device at the transmitting end and the fax device at the receiving end perform the MODEM service flow.
- the VOIP gateway of the fax sending end and the VOIP gateway of the fax receiving end are both configured to support the fax status self-switching function, that is, the fax receiving end gateway and the fax sending end gateway agree in advance on the fax status corresponding to the fax status, the gateway.
- the fax signal is received, the current state is converted into the agreed fax state, and the encoding mode is converted into the encoding mode corresponding to the fax state.
- FIG. 2 it is a signaling flowchart of implementing fax in an embodiment of the present invention, where the signaling process includes the following steps:
- Step 201 The facsimile device 1 at the facsimile transmitting end and the facsimile device 2 at the facsimile receiving end establish a voice call connection in an existing manner, and perform a voice call.
- Step 202 When the user needs to send a fax to the fax device 2 through the fax device 1, the fax transmission function of the fax device 1 is started, for example, the fax button of the fax device is turned on.
- the fax device 1 sends a CED signal to the VOIP gateway 1 of the fax sender.
- the VOIP gateway 1 detects whether the fax signal sent by the facsimile device 1 is received within a period of time after receiving the CED signal, and if not received, reports the CED signal to the upper layer handler of the DSP driver. And switch its current state to the MODEM state. If a fax signal is detected, step 204 is performed.
- Step 204 The fax device 1 sends a V.21 or CNG (CalliNG Tnoe) fax signal to the VOIP gateway 1.
- V.21 or CNG CalliNG Tnoe
- Step 205 The VOIP gateway 1 switches the current state to the fax vbd state, and converts the encoding mode to the G.711 encoding mode corresponding to the fax vbd state.
- Step 206 When the user receives the fax through the fax device 2, the fax receiving function is activated, such as pressing the fax button of the fax device.
- Step 207 The fax device 2 sends a V.21 or CNG fax signal to the VOIP gateway 2.
- Step 209 The fax device 1 and the fax device 2 perform the fax content negotiation, and the fax device 1 encodes the fax content by using the G.711 encoding method, and sends the encoded fax content to the fax device 2 through the T30 transparent transmission mode.
- Step 210 After the fax content is transmitted, resume the fax device 1 and the fax device by itself. A voice call between 2, so that both parties can know in real time whether the fax is successful.
- the embodiment of the present invention further provides a VOIP-based facsimile system, and the structure of the system is as shown in FIG. 3.
- FIG. 3 is a schematic structural diagram of a VOIP-based facsimile system according to an embodiment of the present invention.
- the system includes a first gateway device 31 at a fax transmitting end and a second gateway device 32 at a fax receiving end, where:
- the first gateway device 31 is configured to switch the state of the first gateway device 31 to the set fax state when receiving the first fax signal for characterizing the sent fax, and convert the encoding mode into the fax state. Corresponding first coding mode; and transmitting the fax content to the second gateway device 32 by using the first coding mode;
- the second gateway device 32 is configured to switch the state of the second gateway device 32 to the set fax state when the second fax signal for characterizing the received fax is received, and convert the encoding mode into the first encoding mode.
- the first gateway device 31 receives the non-fax signal before receiving the facsimile signal. And detecting whether the first facsimile signal is received within a preset time threshold, and switching the state of its own to a state corresponding to the non-fax signal when the first facsimile signal is not received.
- the system further includes a first facsimile device 33 at the facsimile transmitting end and a second facsimile device 34 at the facsimile receiving end; the first facsimile device 33 receives the first facsimile signal at the first gateway device 31 (the first facsimile fax) Before the signal is sent by the first facsimile device 33 to the first gateway device 31, a voice call connection with the second facsimile device 34 is established; and the first facsimile device 33 is at the first gateway device 31 and the second The gateway device 32 resumes the voice call connection with the second fax device 34 after the fax content has been transmitted.
- the first facsimile device 33 receives the first facsimile signal at the first gateway device 31 (the first facsimile fax) Before the signal is sent by the first facsimile device 33 to the first gateway device 31, a voice call connection with the second facsimile device 34 is established; and the first facsimile device 33 is at the first gateway device 31 and the second The gateway device 32 resumes the
- the first gateway device 31 and the second gateway device 32 are configured to transmit the fax content. After that, the first gateway device 31 and the second gateway device 32 still use the first coding mode.
- the first fax state is a fax vbd state
- the first coding mode corresponding to the first fax state is a G.711 coding mode.
- the technical solution of the present invention is not limited to the fax process between the fax machine and the fax machine, but also applies to the fax process of the computer to the fax machine, the fax process of the fax machine to the computer, etc., as long as the gateway device of the fax receiving end and the gateway device of the fax transmitting end.
- the unified fax status and the encoding mode corresponding to the fax status are agreed, and the fax receiving end gateway device and the fax transmitting end gateway device switch the current state to the agreed fax state after receiving the fax signal, and the current encoding is performed.
- the way the encoding is agreed.
- the main idea without departing from the technical solution of the present invention should be within the scope of the technical solution of the present invention.
- the fax sending end and the gateway device of the fax receiving end stipulate a unified facsimile state and an encoding mode corresponding to the facsimile state.
- the gateway device receives the facsimile signal, it switches its current state to the agreed state. Fax status, and convert the encoding mode to the agreed encoding mode; After the fax receiving end and the fax sending end gateway device switch to the same fax state, the fax content is transmitted.
- the gateway device at the fax transmitting end and the gateway device at the fax receiving end respectively switch the respective states to the same fax state set in advance after receiving the fax signal, and convert the encoding mode to the fax state.
- the corresponding coding mode overcomes the problem that the compatibility between different gateway devices is poor due to the configuration protocol or/and the core network, and the compatibility between the gateway devices is improved, thereby improving the gateway device.
- the success rate of transmitting the fax content and, by using the technical solution of the present invention, the complicated configuration of each gateway device is not required, thereby simplifying the complexity of the fax process and improving the fax efficiency.
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Abstract
本发明公开了一种基于网际协议语音传输VOIP的传真方法及系统,以解决现有技术中传真设备的网关设备兼容性较差从而导致传真失败率较高的问题。该方法包括:传真发送端的第一网关设备在接收到用于表征发送传真的第一传真信号时,将该第一网关设备的状态切换至传真状态,并使用与该传真状态相对应的编码方式发送传真;传真接收端的第二网关设备在接收到用于表征接收传真的第二传真信号时,将该第二网关设备的状态切换至所述传真状态,并使用所述编码方式接收所述传真。采用本发明技术方案,提高了不同网关设备之间的兼容性,从而提高了传真成功率。
Description
一种基于 VOIP的传真方法及其系统 技术领域
本发明涉及移动通信领域, 尤其涉及一种基于网际协议语音传输
( VOIP, Voice over Internet Protocol, ) 的传真方法以及一种基于 VOIP的 传真系统。 背景技术
目前, 下一代网络( NGN , Next Generation Network )、 IP多媒体子系 统(IMS, IP Multimedia Subsystem, )等网络上的终端设备(该终端设备主 要为网关类设备), 实现传真所釆用的传真方式主要通过受控 T38 和受控 T30来实现传真;现有的该种传真方式在很大程度上受限于多类产品以及各 类终端设备所处的核心网之间的协议兼容性, 终端设备的配置也相对比较 复杂, 比如说: 各终端设备生厂商生产的终端设备的受控实现方式不一样, 同样釆用 T38或 T30传真方式, 但是受控方式存在差异性。 并且, 在釆用 T30传真方式或 T38传真方式时, 需要在终端设备以及软交换上进行相关 的配置, 如: 在软交换上配置会话描述协议 ( SDP , Session Descriptive Protocol )模板,在终端设备上配置受控方式;由于在各软交换上配置的 SDP 模板在发送 SDP信令存在不规范, 或者各终端设备配置的受控方式所釆用 的承载方式不一样等原因, 从而导致终端设备之间在实际应用中存在兼容 性问题, 从而导致传真失败率较高的问题。 发明内容
本发明提供一种基于 VOIP的传真方法及其系统,提高网关设备之间的 兼容性, 以提高传真的成功率。
一种基于网际协议语音传输 VOIP的传真方法, 包括:
传真发送端的第一网关设备在接收到用于表征发送传真的第一传真信 号时, 将该第一网关设备的状态切换至传真状态, 并使用与该传真状态相 对应的编码方式发送所述传真;
传真接收端的第二网关设备在接收到用于表征接收所述传真的第二传 真信号时, 将该第二网关设备的状态切换至所述传真状态, 并使用所述编 码方式接收所述传真。
一种基于网际协议语音传输 VOIP的传真系统,包括传真发送端的第一 网关设备与传真接收端的第二网关设备, 其中:
所述第一网关设备, 用于在接收到用于表征发送传真的第一传真信号 时, 将该第一网关设备的状态切换至传真状态, 并使用与该传真状态相对 应的编码方式发送所述传真;
所述第二网关设备, 用于在接收到用于表征接收所述传真的第二传真 信号时, 将该第二网关设备的状态切换至所述传真状态, 并使用所述编码 方式接收所述传真。
本发明实施例中, 传真发送端的第一网关设备与传真接收端的第二网 关设备, 各自在接收到传真信号之后, 将各自的状态切换至同一传真状态, 并将编码方式转换为与该传真状态相对应的编码方式, 从而克服了不同网 关设备之间由于配置协议或 /和所处核心网之间的兼容性较差的问题, 提高 了第一网关设备与第二网关设备之间的兼容性, 从而提高了网关设备之间 传输传真内容的成功率; 并且, 釆用本发明技术方案, 不需要对各网关设 备进行较为复杂的配置, 因此, 简化了传真流程的复杂度, 提高了传真效 率。 附图说明
图 1为本发明实施例中实现传真的方法流程图;
图 2为本发明实施例中实现传真的信令流程图;
图 3为本发明实施例中基于 VOIP的传真系统的结构示意图。 具体实施方式
下面结合说明书附图对本发明技术方案进行详细的描述。
参见图 1 ,为本发明实施例中实现传真的方法流程图 ,该流程包括步骤: 本方法流程以发起传真的第一传真设备, 接收传真的第二传真设备为 例, 对本发明技术方案进行详细的描述。
步骤 101、 第一传真设备启动传真发送功能, 并向其所在的第一网关设 备发送用于表征发送传真的第一传真信号。
该第一网关设备可以为 VOIP网关设备。
步骤 102、 第一网关设备检测到第一传真设备发送的传真信号时, 将该 第一网关设备当前的状态切换至第一传真状态 (该第一传真状态为预先设 置的传真状态, 可以是第一网关设备与第二网关设备事先约定的传真状 态 ), 并使用与该第一传真状态相对应的第一编码方式向第二网关设备传输 该传真。
步骤 103、 第二传真设备启动传真接收功能, 并向其所在的第二网关设 备发送用于表征接收该传真的第二传真信号,该第二网关设备为 VOIP网关 设备。
步骤 104、第二网关设备检测到该第二传真设备发送的第二传真信号之 后, 将该第二网关设备当前状态切换为第一传真状态, 并使用与该第一传 真状态相对应的第一编码方式接收第一网关设备发送的该传真。
第一传真设备实现向第二传真设备发送传真, 具体为: 第一传真设备 将传真内容通过公共交换电话网络 ( PSTN , Public Switched Telephone Network )传送至第一网关设备; 第一网关设备釆用 T30的受控方式将传真 内容透传至第二网关设备; 第二网关设备将传真内容通过 PSTN发送至第
二传真设备。
较佳地, 由于不同的网关设备都设置有 DSP模板, 为更好的保证传真 传输的成功率,本发明实施例中所釆用的 DSP驱动状态(即第一传真状态) 为 fax vbd (话带数据, Voice Band Data )状态, 与该 fax vbd状态相对应的 第一编码方式为 G.711编码方式。
较佳地, 为避免传真设备在启动传真发送功能之后, 先发送非传真信 号, 比如 MODEM拨号信号( MODEM拨号信号可包括 CED Reverse信号、 CED信号、 ANSAMREV信号等), 再发送传真信号, 从而导致网关设备误 认为检测到的信号为 MODEM设备发起的信号, 从而将当前状态设置为 MODEM状态从而导致传真失败的问题, 本发明技术方案中, 在第一传真 设备启动传真发送功能, 且第二网关设备在接收到第一传真设备发送的 CED信号之后的一段时间阔值内(根据经验,可将该时间阔值设置为 5秒 ), 若没有检测到第一传真设备发送的传真信号时, 则将 CED信号上报给 DSP 驱动程序的上层处理程序, 并将自身当前的状态切换至 MODEM状态, 若 检测到第一传真设备发送的传真信号时将当前的状态切换至预先设定的第 一传真状态, 并进入传真流程; 并且, 在传真流程结束之后, 第一网关设 备将接收到的 CED信号上报至 DSP驱动程序的上层处理程序,进行后续相 关的流程。
较佳地, 上述流程步骤 102或步骤 104中的网关设备当前的编码方式 为预先设置的第一编码方式时, 为提高效率, 不需要再将该当前编码方式 进行转换操作, 直接沿用当前的编码方式。
较佳地, 为后续进行传真的效率, 本发明技术方案中, 在上述传真流 程结束之后, 第一网关设备与第二网关设备沿用第一编码方式。
较佳地, 为使得传真发送端与接收端能够实时的了解传真状态, 本发 明技术方案中, 在传真设备之间进行语音通话的过程中实现传真, 并在传
真结束之后, 自行恢复到语音通话流程, 具体的本发明技术方案的上述流 程的步骤 101之前还包括步骤 100,在步骤 105之后还包括步骤 106,其中: 步骤 100、第一传真设备与第二传真设备通过现有的建立语音通话流程 建立语音通话。
步骤 106、在传真流程结束之后, 第一网关设备与第二网关设备不需要 将传真流程结束的信息上报给 DSP驱动的上层处理程序, 自行恢复传真流 程之前的语音通话状态, 以便用户可通过语音通话获知传真是否已经成功 进行。
本发明实施例中的网关设备可以是综合接入设备 ( IAD , Integrated Access Device ); 网关设备的编码方式包括 G.729、 G.723、 G.711等编码方 式。
本发明技术方案并不仅限于传真的应用场景, 还可以适用于 MODEM 拨号场景, 具体为: 在 MODEM业务发送端, 传真设备启动 MODEM业务 发送功能, 并向其所在的网关设备发送 MODEM拨号信号, 网关设备检测 传真设备发送的 MODEM拨号信号时将当前的状态切换至 MODEM vbd状 态; 在 MODEM业务接收端, 传真设备启动 MODEM业务接收功能, 并向 其所在的网关设备发送 MODEM拨号信号 , 网关设备在接收到 MODEM拨 号信号之后将当前的状态切换为 MODEM vbd状态; 发送端的传真设备与 接收端的传真设备进行 MODEM业务流程。
为更清楚的描述本发明技术方案, 下面结合具体的信令流程图来对本 发明技术方案进行详细的描述。该实例中,传真发送端的 VOIP网关与传真 接收端的 VOIP网关均配置成支持传真状态自切换功能,即传真接收端网关 与传真发送端网关事先约定传真状态与该传真状态相对应的编码方式, 网 关遭接收到传真信号时, 将自身当前的状态转换成约定的传真状态, 并将 编码方式转换成与该传真状态相对应的编码方式。
参见图 2, 为本发明实施例中实现传真的信令流程图, 该信令流程包括 以下步骤:
步骤 201、传真发送端的传真设备 1与传真接收端的传真设备 2通过现 有的方式建立语音通话连接, 并进行语音通话。
步骤 202、用户需要通过传真设备 1向传真设备 2发送传真时, 启动传 真设备 1的传真发送功能, 比如说开启传真设备的传真键等方式。
可选的, 步骤 203、传真设备 1向传真发送端的 VOIP网关 1发送 CED 信号。
较佳地, VOIP网关 1在接收到 CED信号之后的一段时间阔值之内检 测是否收到传真设备 1发送的传真信号, 若没有收到, 则将 CED信号上报 给 DSP驱动程序的上层处理程序,并将自身当前的状态切换至 MODEM状 态, 若检测到传真信号, 则执行步骤 204。
步骤 204、传真设备 1向 VOIP网关 1发送 V.21或 CNG( CalliNG Tnoe, 传真呼叫信号)传真信号。
步骤 205、 VOIP网关 1将当前的状态切换为 fax vbd状态,并将编码方 式转换为与该 fax vbd状态相对应的 G.711编码方式。
步骤 206、 用户通过传真设备 2接收传真时, 启动传真接收功能, 如按 下传真设备的传真键。
步骤 207、 传真设备 2向 VOIP网关 2发送 V.21或 CNG传真信号。 步骤 208、 VOIP网关 2将当前的状态切换至 fax vbd状态,并将当前的 编码方式转换为与该 fax vbd状态对应的 G.711编码方式。
步骤 209、传真设备 1与传真设备 2进行传真内容协商, 传真设备 1釆 用 G.711 编码方式对传真内容进行编码, 并将编码后的传真内容通过 T30 透传方式发送至传真设备 2。
步骤 210、在传真内容传输完毕之后, 自行恢复传真设备 1与传真设备
2之间的语音通话, 以便双方实时的了解传真是否成功。
基于上述方法流程相同的构思, 本发明实施例还提供一种基于 VOIP 的传真系统, 该系统的结构如图 3所示。
参见图 3为本发明实施例中一种基于 VOIP传真系统的结构示意图,该 系统包括传真发送端的第一网关设备 31与传真接收端的第二网关设备 32 , 其中:
第一网关设备 31 ,用于在接收到用于表征发送传真的第一传真信号时, 将该第一网关设备 31的状态切换至设置的传真状态, 并将编码方式转换成 与该传真状态相对应的第一编码方式; 以及, 将传真内容釆用第一编码方 式发送给第二网关设备 32;
第二网关设备 32 ,用于在接收到用于表征接收传真的第二传真信号时, 将该第二网关设备 32的状态切换至设置该传真状态, 并将编码方式转换成 第一编码方式。
较佳地, 为避免第一网关设备 31在接收到传真信号之前接收到非传真 信号从而导致误检的问题, 第一网关设备 31在接收到第一传真信号之前, 若接收到非传真信号时, 在预先设定的时间阔值内检测是否接收到第一传 真信号, 并在没有接收到第一传真信号时, 将自身的状态切换至与该非传 真信号相对应的状态。
较佳地, 上述系统还包括位于传真发送端的第一传真设备 33与位于传 真接收端的第二传真设备 34; 第一传真设备 33在第一网关设备 31接收到 第一传真信号(该第一传真信号为第一传真设备 33发送给第一网关设备 31 的信号)之前, 建立与第二传真设备 34之间的语音通话连接; 并且, 第一 传真设备 33在第一网关设备 31在与第二网关设备 32在传真内容传输完毕 之后, 恢复与第二传真设备 34之间的语音通话连接。
较佳地, 第一网关设备 31与第二网关设备 32在传真内容传输完毕之
后, 第一网关设备 31与第二网关设备 32仍釆用第一编码方式。 较佳地, 第一传真状态为 fax vbd状态, 与该第一传真状态相对应的第 一编码方式为 G.711编码方式。
本发明技术方案并不仅限于传真机与传真机之间的传真流程, 还适用 于计算机到传真机的传真流程、 传真机到计算机的传真流程等, 只要传真 接收端的网关设备与传真发送端的网关设备约定统一的传真状态以及与该 传真状态相对应的编码方式, 传真接收端网关设备与传真发送端网关设备 在接收到传真信号之后, 将当前的状态切换至约定的传真状态, 并将当前 的编码方式约定的编码方式。 只要不脱离本发明技术方案的主要构思都应 属于本发明技术方案所保护的范围。
在本发明实施例中, 传真发送端与传真接收端的网关设备约定有统一 的传真状态与该传真状态相对应的编码方式, 当网关设备接收到传真信号 之后, 将自身当前的状态切换至约定的传真状态, 并将编码方式转换成约 定的编码方式; 在传真接收端与传真发送端的网关设备都切换至相同的传 真状态之后, 进行传真内容的传输。 釆用本发明技术方案, 传真发送端的 网关设备与传真接收端的网关设备, 各自在接收到传真信号之后, 将各自 的状态切换至预先设置的同一传真状态, 并将编码方式转换为与该传真状 态相对应的编码方式, 从而克服了不同网关设备之间由于配置协议或 /和所 处核心网之间的兼容性较差的问题, 提高了网关设备之间的兼容性, 从而 提高了网关设备之间传输传真内容的成功率; 并且, 釆用本发明技术方案, 不需要对各网关设备进行较为复杂的配置, 因此, 简化了传真流程的复杂 度, 提高传真效率。
本发明的精神和范围。 这样, 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在
.C9.0/0T0ZN3/X3d .860Cl/llOZ OAV
Claims
1、 一种基于网际协议语音传输 VOIP的传真方法, 其特征在于, 所述 方法包括:
传真发送端的第一网关设备在接收到用于表征发送传真的第一传真信 号时, 将自身的状态切换至传真状态, 并使用与该传真状态相对应的编码 方式发送所述传真;
传真接收端的第二网关设备在接收到用于表征接收所述传真的第二传 真信号时, 将自身的状态切换至所述传真状态, 并使用所述编码方式接收 所述传真。
2、 根据权利要求 1所述的方法, 其特征在于, 所述第一网关设备在接 收到所述第一传真信号之前, 还包括:
第一网关设备在接收到非传真信号时, 在预先设定的时间阔值内检测 是否接收到所述第一传真信号, 并在没有接收到所述第一传真信号时, 将 自身备的状态切换至与该非传真信号相对应的状态。
3、 根据权利要求 1所述的方法, 其特征在于, 所述第一网关设备在接 收到所述第一传真信号之前, 所述传真发送端的第一传真设备与所述传真 接收端的第二传真设备建立语音通话连接;
所述第一网关设备与所述第二网关设备在传真内容传输完毕之后, 恢 复所述第一传真设备与所述第二传真设备之间的语音通话连接。
4、 根据权利要求 1至 3任一项所述的方法, 其特征在于, 所述第一网 关设备与所述第二网关设备在传真内容传输完毕之后, 所述第一网关设备 与所述第二网关设备釆用所述编码方式。
5、 根据权利要求 1至 3任一项所述的方法, 其特征在于, 所述传真状 态为传真话带数据 ( fax vbd )状态, 与该传真状态对应的所述编码方式为 G.711编码方式。
6、 一种基于网际协议语音传输 VOIP的传真系统, 其特征在于, 所述 系统包括传真发送端的第一网关设备与传真接收端的第二网关设备, 其中: 所述第一网关设备, 用于在接收到用于表征发送传真的第一传真信号 时, 将自身的状态切换至传真状态, 并使用与该传真状态相对应的编码方 式发送所述传真;
所述第二网关设备, 用于在接收到用于表征接收所述传真的第二传真 信号时, 将自身的状态切换至所述传真状态, 并使用所述编码方式接收所 述传真。
7、 根据权利要求 6所述的系统, 其特征在于, 所述第一网关设备进一 步用于, 在接收到所述第一传真信号之前, 在接收到非传真信号时, 在预 先设定的时间阔值内检测是否接收到所述第一传真信号, 并在没有接收到 所述第一传真信号时, 将自身的状态切换至与该非传真信号相对应的状态。
8、 根据权利要求 6所述的系统, 其特征在于, 所述系统还包括位于传 真发送端的第一传真设备与位于传真接收端的第二传真设备;
所述第一传真设备在所述第一网关设备接收到所述第一传真信号之 前, 建立与所述第二传真设备之间的语音通话连接;
所述第一传真设备在所述第一网关设备在与所述第二网关设备在传真 内容传输完毕之后, 恢复与所述第二传真设备之间的语音通话连接。
9、 根据权利要求 6至 8任一项所述的系统, 其特征在于, 所述第一网 关设备与所述第二网关设备在传真内容传输完毕之后, 所述第一网关设备 与所述第二网关设备釆用所述编码方式。
10、 根据权利要求 6至 8任一项所述的系统, 其特征在于, 所述传真 状态为 fax vbd状态, 与该传真状态相对应的所述编码方式为 G.711编码方 式。
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