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CN104243296A - Ethernet-PSTN (Public Switched Telephone Network) gateway - Google Patents

Ethernet-PSTN (Public Switched Telephone Network) gateway Download PDF

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CN104243296A
CN104243296A CN201410545891.9A CN201410545891A CN104243296A CN 104243296 A CN104243296 A CN 104243296A CN 201410545891 A CN201410545891 A CN 201410545891A CN 104243296 A CN104243296 A CN 104243296A
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output
signal
incoming call
ethernet
information
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梁欣涛
祝虹媛
柳长源
韦琦
王玉静
谢金宝
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Harbin University of Science and Technology
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Harbin University of Science and Technology
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Abstract

本发明提供了一种以太网-PSTN网关,包括:DDA模块,用于铃流检测并输出、根据摘/挂机控制信号进行摘/挂机操作;FSK接收模块,用于解码FSK制式来电信息后输出;MCU模块,用于检测铃流检测输出确定来电并将该铃流检测信号转换为振铃信息后输出,将模拟电话信号从RX线路A/D转换成数字电话信号或将数字电话信号从TX线路D/A转换为模拟电话信号后输出,从FSK接收模块输出中提取来电信息,并将来电信息输出,以及将拨号控制信息转换为摘/挂机控制信号及DTMF拨号信号后输出;以太网模块,用于以IP数据报承载来电信息、振铃信息、拨号控制信息和数字电话信号。本发明针对单线路和中国PSTN电话信号特点,通过合理安排时序控制采用单MCU的简洁设计,成本低十分方便实惠。

The present invention provides an Ethernet-PSTN gateway, comprising: a DDA module, used for ring current detection and output, and an off-hook operation according to the off-hook control signal; an FSK receiving module, used for decoding the incoming call information of the FSK system and outputting it ; The MCU module is used to detect the ring current detection output to determine the incoming call and convert the ring current detection signal into ring information and then output it, convert the analog telephone signal from the RX line A/D to a digital telephone signal or convert the digital telephone signal from the TX The line D/A is converted into an analog telephone signal and then output, the incoming call information is extracted from the output of the FSK receiving module, and the incoming call information is output, and the dialing control information is converted into an off/on-hook control signal and a DTMF dialing signal before output; Ethernet module , used to carry incoming call information, ringing information, dial control information and digital telephone signals in IP datagrams. Aiming at the characteristics of single line and Chinese PSTN telephone signal, the present invention adopts simple design of single MCU by rationally arranging timing control, and is very convenient and affordable with low cost.

Description

以太网-PSTN网关Ethernet-PSTN Gateway

技术领域technical field

本发明涉及一种以太网-PSTN网关,具体涉及一种固定网络与移动网络融合中的终端融合设备,属于通信终端技术领域。The invention relates to an Ethernet-PSTN gateway, in particular to a terminal fusion device in the fusion of a fixed network and a mobile network, and belongs to the technical field of communication terminals.

背景技术Background technique

现代通信终端的便捷化使得智能移动终端与我们的日常生活联系日趋紧密,但是智能移动终端与传统的固定电话相比仍然存在依赖运营商的无线信号或Internet才能完成相应的通讯功能的缺陷。而传统的固定电话无法安装应用软件的缺陷也使固定电话难以满足用户需求。The convenience of modern communication terminals makes smart mobile terminals more and more closely related to our daily life. However, compared with traditional fixed phones, smart mobile terminals still have the defect of relying on the operator's wireless signal or the Internet to complete the corresponding communication functions. The defect that traditional fixed phones cannot install application software also makes it difficult for fixed phones to meet user needs.

近些年通信技术发展迅速,通信产业也呈现出一片繁荣的景象。产业的充分发展使得竞争更加激烈。特别是移动通信的迅猛发展,大量蚕食了固定网络的市场份额。在这种情况下,固网运营商开始重新考虑FMC(Fixed-Mobile Convergence,移动网络融合),希望通过FMC实现移动网络与固网间的无缝漫游,鼓励用户使用固定网络,从而夺回一定市场份额。而移动网络和固网混合运营商则希望通过FMC发挥协同效应,整合两种网络的资源,为用户提供更加便捷、更加个性化服务,以吸引用户。而在现有技术中,并没有能够适用于FMC的网关设备,因此无法实现固定网络与移动网络融合中的终端融合。In recent years, communication technology has developed rapidly, and the communication industry has also shown a scene of prosperity. The full development of the industry makes the competition more intense. In particular, the rapid development of mobile communications has eroded the market share of fixed networks in large numbers. In this case, fixed network operators began to reconsider FMC (Fixed-Mobile Convergence, mobile network convergence), hoping to realize seamless roaming between mobile networks and fixed networks through FMC, and encourage users to use fixed networks, thereby regaining a certain market share. The mobile network and fixed network mixed operators hope to play a synergistic effect through FMC, integrate the resources of the two networks, and provide users with more convenient and personalized services to attract users. However, in the prior art, there is no gateway device suitable for the FMC, so the terminal convergence in the convergence of the fixed network and the mobile network cannot be realized.

发明内容Contents of the invention

本发明为解决现有技术无法实现固定网络与移动网络融合中的终端融合的问题,进而提供了一种以太网-PSTN网关。为此,本发明提供了如下的技术方案:The present invention provides an Ethernet-PSTN gateway for solving the problem that the prior art cannot realize the terminal fusion in the fusion of the fixed network and the mobile network. For this reason, the present invention provides following technical scheme:

一种以太网-PSTN网关,包括:An Ethernet-PSTN gateway comprising:

DDA模块,用于铃流检测并输出、根据摘/挂机控制信号进行摘/挂机操作、将电话线路进行2-4线转换分为RX和TX线路;DDA module, used for ring current detection and output, off-hook operation according to off-hook control signal, and 2-4 line conversion of telephone lines into RX and TX lines;

FSK接收模块,用于解码FSK制式来电信息后输出;FSK receiving module, used to decode FSK incoming call information and output it;

MCU模块,用于检测所述铃流检测输出确定来电并将该铃流检测信号转换为振铃信息后输出,将模拟电话信号从所述RX线路A/D转换成数字电话信号或将数字电话信号从所述TX线路D/A转换为模拟电话信号后输出,从所述FSK接收模块输出中提取来电信息,并将所述来电信息输出,以及将拨号控制信息转换为摘/挂机控制信号及DTMF拨号信号后输出;The MCU module is used to detect the ringing current detection output to determine the incoming call and convert the ringing current detection signal into ringing information and output it, convert the analog telephone signal from the RX line A/D into a digital telephone signal or convert the digital telephone The signal is output after the D/A conversion of the TX line into an analog telephone signal, the incoming call information is extracted from the output of the FSK receiving module, and the incoming call information is output, and the dialing control information is converted into an off/on-hook control signal and Output after DTMF dial signal;

以太网模块,用于与以太网终端进行通信,以IP数据报承载所述来电信息、振铃信息、拨号控制信息和数字电话信号。The Ethernet module is used for communicating with the Ethernet terminal, and carrying the incoming call information, ringing information, dialing control information and digital telephone signals with IP datagrams.

本发明提供的技术方案通过对模拟电话信号与IP数据报进行转换,实现以太网终端作为电话使用,使以太网终端可以根据环境切换功能,分别实现Internet条件下的IP电话以及以太网-PSTN网关时的PSTN电话功能,以及作为PSTN电话使用时既利用了现有以太网终端降低了成本又可以为固定电话用户提供便捷的使用体验,扩充了固网电话的使用模式,使固网电话更贴近人们现今的使用习惯。The technical solution provided by the invention realizes the use of the Ethernet terminal as a telephone by converting the analog telephone signal and the IP datagram, so that the Ethernet terminal can switch functions according to the environment, and respectively realize the IP telephone and the Ethernet-PSTN gateway under the Internet condition When used as a PSTN phone, and when used as a PSTN phone, it not only reduces the cost by using the existing Ethernet terminal, but also provides a convenient experience for fixed-line phone users. It expands the use mode of fixed-line phones and makes fixed-line phones closer to people's current usage habits.

附图说明Description of drawings

为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

图1是本发明的具体实施方式提供的以太网-PSTN网关的结构示意图;Fig. 1 is the structural representation of the Ethernet-PSTN gateway that the specific embodiment of the present invention provides;

图2是本发明的具体实施方式提供的以太网-PSTN网关与以太网终端(智能手机)和PSTN终端(电话)连接的结构示意图;Fig. 2 is the structural representation that the Ethernet-PSTN gateway that the specific embodiment of the present invention provides is connected with Ethernet terminal (smart phone) and PSTN terminal (telephone);

图3是本发明的具体实施方式提供的以太网-PSTN网关的工作流程示意图。Fig. 3 is a schematic diagram of the workflow of the Ethernet-PSTN gateway provided by the specific embodiment of the present invention.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

本具体实施方式提供了一种以太网-PSTN网关,如图1所示,包括:This specific embodiment provides a kind of Ethernet-PSTN gateway, as shown in Figure 1, comprises:

DDA模块,用于铃流检测并输出、根据摘/挂机控制信号进行摘/挂机操作、将电话线路进行2-4线转换分为RX和TX线路;DDA module, used for ring current detection and output, off-hook operation according to off-hook control signal, 2-4 line conversion of telephone lines into RX and TX lines;

FSK接收模块,用于解码FSK制式来电信息后输出;FSK receiving module, used to decode FSK incoming call information and output it;

MCU模块,用于检测所述铃流检测输出确定来电并将该铃流检测信号转换为振铃信息后输出,将模拟电话信号从所述RX线路A/D转换成数字电话信号或将数字电话信号从所述TX线路D/A转换为模拟电话信号后输出,从所述FSK接收模块输出中提取来电信息,并将所述来电信息输出,以及将拨号控制信息转换为摘/挂机控制信号及DTMF拨号信号后输出;The MCU module is used to detect the ringing current detection output to determine the incoming call and convert the ringing current detection signal into ringing information and output it, convert the analog telephone signal from the RX line A/D into a digital telephone signal or convert the digital telephone The signal is output after the D/A conversion of the TX line into an analog telephone signal, the incoming call information is extracted from the output of the FSK receiving module, and the incoming call information is output, and the dialing control information is converted into an off/on-hook control signal and Output after DTMF dial signal;

以太网模块,用于与以太网终端进行通信,以IP数据报承载所述来电信息、振铃信息、拨号控制信息和数字电话信号。The Ethernet module is used for communicating with the Ethernet terminal, and carrying the incoming call information, ringing information, dialing control information and digital telephone signals with IP datagrams.

本具体实施方式提供的以太网-PSTN网关的应用方式如图2所示,当外界有电话打入时以太网模块通过IP数据报与手机等以太网终端建立连接,并通过该连接将从FSK接收模块得到的来电信息传送至以太网终端,用户选择通话即在该已建立的连接上实现通信;在通信过程中在以太网络侧以IP数据报形式传送电话信号,在固定电话线路侧以模拟信号形式传输电话信号;当以太网终端用户需要拨打电话时,使用与图2所示的反向的流程也可实现通信。The application mode of the Ethernet-PSTN gateway provided by this specific embodiment is as shown in Figure 2, when the outside world has a call to break in, the Ethernet module establishes a connection with Ethernet terminals such as mobile phones through IP datagrams, and through this connection will be connected from the FSK The incoming call information obtained by the receiving module is transmitted to the Ethernet terminal, and the user selects a call to realize communication on the established connection; during the communication process, the telephone signal is transmitted on the Ethernet side in the form of IP datagram, and on the fixed line side in the form of analog The telephone signal is transmitted in the form of a signal; when an Ethernet terminal user needs to make a call, the communication can also be realized by using the reverse flow shown in Figure 2 .

相较现有技术,本具体实施方式提供的以太网-PSTN网关采用单MCU模块与DDA模块结合,通过MCU模块自身模数、数模变换并与以太网模块通信实现模拟电话信号与IP数据报的双向转换,进而实现以太网-PSTN网关功能。与以往的PSTN网关设备不同,本具体实施方式提供的以太网-PSTN网关通过合理的时序和中断控制并针对单线路电话和中国PSTN电话信号特点采用简化设计,让单MCU模块既作为控制器又作为A/D、D/A和以太网通讯的信号处理器。可实现FSK来电显示(中国PSTN电话来电信息主要是FSK)、DTMF拨号(通过MCU的D/A合成DTMF信号)、摘/挂机、语音通话等功能。Compared with the prior art, the Ethernet-PSTN gateway provided in this specific embodiment adopts a combination of a single MCU module and a DDA module, and realizes analog telephone signals and IP datagrams through the MCU module's own analog-to-digital, digital-to-analog conversion and communication with the Ethernet module. Two-way conversion, and then realize the Ethernet-PSTN gateway function. Different from the previous PSTN gateway equipment, the Ethernet-PSTN gateway provided by this specific embodiment adopts a simplified design through reasonable timing and interrupt control and according to the characteristics of single-line telephone and PSTN telephone signal in China, so that the single MCU module can be used as both a controller and a As a signal processor for A/D, D/A and Ethernet communication. It can realize functions such as FSK caller ID (the caller information of PSTN telephone in China is mainly FSK), DTMF dialing (DTMF signal is synthesized through MCU D/A), pick up/hang up, voice call, etc.

本具体实施方式提供的以太网-PSTN网关的工作流程如图3所示:当有来电进入该DDA模块时,MCU模块从DDA模块输出的来电信号中提取振铃脉冲信号;FSK接收模块从DDA模块输出的来电信号中提取并转换来电信息发送给MCU模块;MCU模块可将来电信息和振铃脉冲信号通过以太网模块以IP数据报的形式发送给以太网终端;以太网终端可通过以太网向MCU模块发送摘/挂机或拨号等控制信息;MCU模块可控制DDA模块的摘/挂机状态;DDA模块进入摘机状态后,MCU模块可以通过DDA模块的RX、TX线路进行A/D、D/A变换,将模拟电话信号和数字电话信号进行双向转换,进而实现语音通信;MCU模块控制通过以太网模块以IP数据报形式发送该A/D变换得到的数字电话信号,并将从该以太网模块接收到的数字电话信号经D/A变换为模拟电话信号;数字信号通过IP电话软件处理后传送到以太网终端相关模块;在通话过程中所述以太网-PSTN网关实时地完成以太网终端和固定电话双向的信号转换,从而实现该以太网终端的PSTN功能。相应的以太网终端在所述以太网-PSTN网关的环境内可以作为PSTN电话使用,不需要使用通常的手机信号或Internet,从而方便的切换上述三种线路及其号码,使得联系人的管理更加方便统一。The work flow of the Ethernet-PSTN gateway that this specific embodiment provides is as shown in Figure 3: when incoming call enters this DDA module, MCU module extracts the ringing pulse signal from the incoming call signal of DDA module output; Extract and convert the incoming call information from the incoming call signal output by the module and send it to the MCU module; the MCU module can send the incoming call information and ringing pulse signal to the Ethernet terminal in the form of IP datagram through the Ethernet module; the Ethernet terminal can pass the Ethernet Send control information such as off-hook or dial-up to the MCU module; the MCU module can control the off-hook state of the DDA module; after the DDA module enters the off-hook state, the MCU module can perform A/D and D through the RX and TX lines of the DDA module. /A conversion, bidirectional conversion of analog telephone signals and digital telephone signals, and then voice communication; The digital telephone signal received by the network module is converted into an analog telephone signal by D/A; the digital signal is processed by the IP telephone software and then sent to the relevant module of the Ethernet terminal; Two-way signal conversion between the terminal and the fixed telephone, so as to realize the PSTN function of the Ethernet terminal. Corresponding Ethernet terminal can be used as PSTN telephone in the environment of described Ethernet-PSTN gateway, does not need to use common mobile phone signal or Internet, thus switches above-mentioned three kinds of lines and numbers thereof conveniently, makes the management of contacts more convenient. Convenience and unity.

采用本具体实施方式提供的技术方案,通过对模拟电话信号与IP数据报进行转换,实现以太网终端作为电话使用,使以太网终端可以根据环境切换功能,分别实现Internet条件下的IP电话以及以太网-PSTN网关时的PSTN电话功能,以及作为PSTN电话使用时既利用了现有以太网终端降低了成本又可以为固定电话用户提供便捷的使用体验,扩充了固网电话的使用模式,使固网电话更贴近人们的使用习惯。By adopting the technical solution provided by this specific embodiment, by converting the analog telephone signal and IP datagram, the Ethernet terminal can be used as a telephone, so that the Ethernet terminal can switch functions according to the environment, and respectively realize IP telephone and Ethernet under Internet conditions. Network-PSTN gateway PSTN phone function, and when used as a PSTN phone, it not only reduces the cost by using the existing Ethernet terminal, but also provides a convenient experience for fixed-line phone users, expanding the use mode of fixed-line phones, making fixed-line Internet telephony is closer to people's usage habits.

以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内,可轻易想到的变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应该以权利要求的保护范围为准。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field can easily think of Changes or substitutions should fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (1)

1.一种以太网-PSTN网关,其特征在于,包括:1. A kind of Ethernet-PSTN gateway, is characterized in that, comprises: DDA模块,用于铃流检测并输出、根据摘/挂机控制信号进行摘/挂机操作、将电话线路进行2-4线转换分为RX和TX线路;DDA module, used for ring current detection and output, off-hook operation according to off-hook control signal, and 2-4 line conversion of telephone lines into RX and TX lines; FSK接收模块,用于解码FSK制式来电信息后输出;FSK receiving module, used to decode FSK incoming call information and output it; MCU模块,用于检测所述铃流检测输出确定来电并将该铃流检测信号转换为振铃信息后输出,将模拟电话信号从所述RX线路A/D转换成数字电话信号或将数字电话信号从所述TX线路D/A转换为模拟电话信号后输出,从所述FSK接收模块输出中提取来电信息,并将所述来电信息输出,以及将拨号控制信息转换为摘/挂机控制信号及DTMF拨号信号后输出;以太网模块,用于与以太网终端进行通信,以IP数据报承载所述来电信息、振铃信息、拨号控制信息和数字电话信号。The MCU module is used to detect the ringing current detection output to determine the incoming call and convert the ringing current detection signal into ringing information and output it, convert the analog telephone signal from the RX line A/D into a digital telephone signal or convert the digital telephone The signal is output after the D/A conversion of the TX line into an analog telephone signal, the incoming call information is extracted from the output of the FSK receiving module, and the incoming call information is output, and the dialing control information is converted into an off/on-hook control signal and The DTMF dialing signal is output; the Ethernet module is used to communicate with the Ethernet terminal, and the IP datagram is used to carry the incoming call information, ringing information, dialing control information and digital telephone signals.
CN201410545891.9A 2014-10-15 2014-10-15 Ethernet-PSTN (Public Switched Telephone Network) gateway Pending CN104243296A (en)

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Application publication date: 20141224