CN100452784C - Phonetical gate communication device and method - Google Patents
Phonetical gate communication device and method Download PDFInfo
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- CN100452784C CN100452784C CNB031237975A CN03123797A CN100452784C CN 100452784 C CN100452784 C CN 100452784C CN B031237975 A CNB031237975 A CN B031237975A CN 03123797 A CN03123797 A CN 03123797A CN 100452784 C CN100452784 C CN 100452784C
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Abstract
The present invention discloses speech gateway communication equipment. The equipment not only comprises components which the general speech gateway communication equipment comprises, but also comprises a time division digital switching network chip, wherein all the telephone interfaces, relay interfaces and DSP are connected with the time division digital switching network chip by coding-decoding modules (Codec). The present invention also discloses a speech gateway communication method which is characterized in that the method comprises a step of transferring speech signals by an IP (Internet Protocol) network as well as a step of transferring the speech signals by a programmed control switching mode. The method and the equipment of the present invention combine the advantages of the traditional program control switching equipment and the method thereof and the speech gateway equipment and the method thereof to realize the perfection of functions of communication equipment, to effectively reduce the cost and obviously improve the speech quality of internal calls.
Description
Technical field
The present invention relates to a kind of voice gateways communication apparatus and the voice gateways means of communication, relate in particular to a kind of voice gateways communication apparatus and voice gateways means of communication in conjunction with traditional telephone exchange machine technology and the voice transmission technology of internet protocol-based (VOIP technology).
Background technology
Traditionally, for the purpose of communication, almost each enterprise customer or group user generally use special-purpose stored-program control exchange (PBX) to realize the fixedly mutual conversation of inside, office space, and realize conversation with external user by the mode that inserts outside public network.The operation principle of traditional digital SPC exchange is, at first with the analog signal of calling terminal phone according to unified standard, in coding/decoding module, be converted into digital signal; Encode again, form the data flow of per second 64K position; This data flow enters into time-division digital switching network chip, and the time-division digital switching network can exchange to this data flow on the interface of called side phone; In coding/decoding module, this digital signal is decoded then; Convert analog signal again to; Be transferred at last on the callee telephone set, can hear the opposing party's sound like this.Wherein, time-division digital switching network chip is the core of stored-program control exchange, and it is subjected to the control of central processor CPU.Comprised in the central processor CPU that one packs into the complicated special-purpose software system that stroke control exchange is controlled.Use the benefit of stored-program control exchange mainly to be, for the conversation of enterprises user or group internal user and external user, it can make more user fully share less trunk resource and realize conversing simultaneously; For the conversation between enterprises user or the group internal user, it can make conversation between these internal users not be subjected to the restriction of trunk resource, and no-charge call freely, thereby significantly cost saving; In addition, can also expand out many supplementary service functions.
The another kind of equipment of realizing telephone communication is to utilize IP network to come the equipment of transferring voice---the VOIP voice gateway equipment.Along with popularizing day by day and the IP broad application of computer, all by renting or self-built mode has had self IP network, the VOIP voice gateway equipment also arises at the historic moment for the many large, medium and small enterprise of all trades and professions and many government departments.Its operation principle is: after receiving the voice calls signal, utilize compression algorithm that speech data is compressed processing, then speech data is packed by the TCP/IP standard, through IP network packet is delivered to by calling ground, again these VoPs are stringed together,, revert to original voice signal through after the decompression processing, deliver to called side, reach the purpose that transmits voice by the Internet in real time.Use the benefit of VOIP voice gateways system to be, it can directly use the internet, and versatility is good, has greatly enlarged the scope of transmitting voice messaging; The spending of toll telephone is dialed in saving; Can also expand out many other functions, as carrying out picture transmission simultaneously, or the like.
But aforementioned two kinds of telephone communication sets all have weak point separately, that is: on the one hand, the shortcoming of conventional P BX is that the PBX product that different manufacturers provides contains the proprietary technology of each producer, and poor compatibility between the product, autgmentability are poor; And conventional P BX can not pass through IP (Internet protocol) Network Transmission voice simply, does not promptly have the function that VOIP equipment is had.And the VOIP technology be realize from the telecommunication system of tradition sealing to open, based on the revolutionary technology of the telecommunication platform transformation of IP, it has opened the plateform system of each traditional in the past exchange control, make new product and new the application emerge in an endless stream, prospect is very wide.If traditional PBX does not combine with the IP technology, its application will be subjected to great restriction.In addition, the expense of PBX equipment is higher, and it is also high to use PBX to dial long distance telephone fee.On the other hand, voice gateway equipment does not have many functions of digital SPC exchange, many functions of telephone for special use exchange especially, and this just causes in many application, and the function that voice gateways provided can not satisfy user's demand.As, in the national standard of relevant telephonic communication, stipulated many supplementary services, voice gateways can not realize all supplementary service functions, this can limit its range of application equally.Simultaneously, when another telephone subscriber of telephone subscriber's voice calls intra-gateway of voice gateways, speech quality descends.No matter because be intra-gateway or outside conversation, voice signal all will be transmitted through after the compression process, so not only to produce distortion inevitably, cause speech quality to descend, and, voice gateways all will take a large amount of disposal ability of system to the compression and decompression process of voice signal, especially take the DSP disposal ability of system, this will cause the disposal ability of system to reduce, in other words, the user's communication of as much will take system's more resources, causes the requirement raising to the disposal ability of system.In addition, for the function of using both to provide simultaneously, the user has to purchase simultaneously PBX equipment and each cover of VOIP equipment, has increased fixed assets cost and maintenance cost.
Summary of the invention
The objective of the invention is, a kind of novel voice gateway communication device and novel voice gateway means of communication that traditional PBX technology is combined with the VOIP technology are provided.
By one object of the present invention, a kind of novel voice gateway communication device that traditional PBX technology is combined with the VOIP technology is provided, has comprised several telephony interfaces and trunk interface, digital signal processor (DSP), central processing unit (CPU) and Ethernet interface; Ethernet one terminates on the central processing unit (CPU), and the other end is received on the outer data network; It is characterized in that, also comprise a time-division digital switching network chip, all telephony interfaces all are connected with time-division digital switching network chip by coding/decoding module with trunk interface; DSP also therewith time-division digital switching network chip be connected.Like this, all telephony interfaces, trunk interface, dsp interface can both carry out intercoursing of signal by the time-division digital switching network in the time-division digital switching network chip.When being positioned at the gateway outside by call object, under the control of central processor CPU, call voice converts digital signal to by coding/decoding module, be transferred to DSP by the time-division digital switching network then, by DSP digital signal is compressed processing, form voice packet, afterwards, central processor CPU sends to outer data network with this voice packet, arrives by call object by outer data network.Therefore, the present invention has had the function by internet transmission voice (VOIP).And when being positioned at intra-gateway or trunk interface by call object, under the control of central processor CPU, convert voice signal to digital signal, directly exchange to the called side corresponding codec behind the coding by the time-division digital switching network, decoding is reduced into analog voice signal, finally reaches by call object.Thereby the present invention has had all functions of digital SPC exchange.
By another object of the present invention, a kind of novel voice gateway means of communication that traditional FBX technology is combined with the VOIP technology are provided, as shown in Figure 5, may further comprise the steps:
A. be subjected to call signal from telephony interface or trunk interface termination, the analog voice call analog signal conversion is become digital signal and encode by coding/decoding module;
It is characterized in that, further comprising the steps of:
B. judge by call object and be positioned at still outside of intra-gateway; If be positioned at the gateway outside, then carry out following steps c by call object; If be positioned at intra-gateway or trunk interface, then carry out following steps d by call object;
C. be transferred to digital signal processor DSP by the time-division digital switching network, by DSP digital signal is compressed processing and form voice packet, by central processor CPU this voice packet is sent to outer data network then, arrive by call object by outer data network;
D. under the control of central processor CPU, the digital signal of having encoded is directly arrived by the coding/decoding module of call object correspondence by time-division digital switching network exchange, be reduced into analog voice signal, finally arrive by call object.
The present invention has added the time-division digital switching network in common voice gateways, by the software control handling process of central processing unit, realize communication function simultaneously.Compare with traditional PBX, the present invention has remarkable advantages, as: telephone network and computer network are unified into an integral body, and dual-use or many usefulness except providing for traditional telephone subscriber the service, can also provide service for the Internet user easily; Simultaneously, except phone programme-controlled exchange function is provided, can also provide the voice gateways communication function; For the user has significantly saved equipment investment and operating cost; Brand-new hardware platform and highly integrated systemic-function can convenient and easily realize value-added service, such as setting up the call center, implementing VOIP etc.; The communication platform of special use is moved on the popular general computer platform of being familiar with, open standard is arranged, interoperability, versatility and practicality are stronger; Use, configuration and maintenance are simpler; Function is more powerful and integrated level is high, and triangular web just can be finished and use conventional P BX outer to join the function that many equipment just can be finished, such as automatic traffic platform, voice mail etc.; Owing to adopted computer platform, make the dilatation of system and upgrading simple more and reduce investment outlay; Application and development is convenient and simple.And compare with general VOIP voice gateways product, the present invention can realize the exchange of speech function; Owing to the compression and decompression of having removed from data are handled, therefore reduce the distortion of voice during INCOM intercom, improved speech quality, reduced taking of DSP passage simultaneously, improved the disposal ability of dsp system, reduced the cost of system effectively; In addition, can realize the not available phone value-added service of general VOIP product, as calling out supplementary services such as maintenance, Call Waiting, tripartite consultation; Under the situation of same number of users, cost performance height of the present invention.Therefore, the present invention can not only overcome PBX equipment and VOIP equipment weak point separately respectively, also combines the advantage of PBX and VOIP, promptly when realizing the VOIP function, the function of all stored-program control exchange is provided again, can have satisfied the various demands of the different occasions of user.Therefore the present invention has not only realized the perfect of communication apparatus function, reduces cost effectively, and has obviously improved the voice quality of INCOM intercom.
Description of drawings
Fig. 1 is the circuit connection side block diagram of the special-purpose stored-program control exchange of prior art.
Fig. 2 is the circuit connection side block diagram of the VOIP voice gateway equipment of prior art.
Fig. 3 is the circuit connection side block diagram of voice gateways communication apparatus of the present invention.
Fig. 4 is the functional module diagram of the time-division digital switching network chip and the central processing unit (CPU) of present device.
Fig. 5 is the flow chart of the inventive method.
Fig. 6 is the flow chart of a scheme of the voice gateways means of communication of the present invention.
Embodiment
Below in conjunction with accompanying drawing present device is described in further detail.
Fig. 3 is the circuit connection side block diagram of present device, and voice gateways communication apparatus of the present invention comprises several telephony interfaces and trunk interface, digital signal processor (DSP), central processing unit (CPU) and Ethernet interface; Ethernet one terminates on the central processing unit (CPU), and the other end is received on the outer data network; Also comprise a time-division digital switching network chip, all telephony interfaces all are connected with time-division digital switching network chip by coding/decoding module with trunk interface; DSP also therewith time-division digital switching network chip be connected.Like this, all telephony interfaces, trunk interface, dsp interface can both carry out intercoursing of signal by the time-division digital switching network in the time-division digital switching network chip.Wherein, telephony interface, trunk interface, digital signal processor (DSP), Ethernet interface and coding/decoding module all are the common components in PBX technology and the VOIP technical field, can commercially obtain.Time-division digital switching network chip and central processing unit (CPU) then need by the function of present device, and the logical circuit and the Control Software System that manufacture and design are installed for this reason, and their module is shown among Fig. 4.On the basis of having understood content of the present invention, those of ordinary skills learn the particular content of each module easily, and know and how to realize them.
Fig. 6 is the flow chart of a scheme of the voice gateways means of communication of the present invention, comprises that step is:
The 1st step: the phone off-hook, CPU control time-division digital switching network send dialing tone to telephony interface;
The 2nd step: subscriber dialing, CPU control time-division digital switching network cuts off dialing tone, and database software carries out number analysis, if VOIP calls out, then carries out following the 3rd step, the 4th step, otherwise carries out the 5th step, the 6th step;
The 3rd step: the VOIP task will be called out by the VOIP agreement and be sent to network, arrive called gateway, and telephony interface is connected to DSP by the time-division digital switching network;
The 4th step: called party answer, the calling and called conversation, the DSP compressed voice, CPU sends to voice by network interface called, carries out following the 7th step then
The 5th step: if intercommunication phone, then called terminal ringing; If relaying then sends call information to the other side.By the time-division digital switching network caller phone is connected to ring-back tone;
The 6th step: called party answer connects caller, called, caller, incoming call by the time-division digital switching network.
The 7th step: The Calling Party Hooks On, cuts off switching network, calls out release signal, free system resources for called transmission.
For realizing above step, the control system that the inventive method is used adopts real time operating system and realizes with multitask, the task module of creating in the system comprises that network task, interface communication task, call treatment task, database tasks, VOIP agreement task, DSP control communication task, in addition, can also comprise charging task, maintain configuration task dispatching.Wherein, the particular content of each task is:
1. network task: be responsible for accepting data and sending data, realize network service from network.
2. interface communication task: finish the communication between interface board and the systems soft ware, collect the incident of hardware, and the control of systems soft ware is communicated to interface board.
3. call treatment task: finish the control of phone, relaying, realize the communication protocol, supplementary service of digital SPC exchange etc.Adopt limited message status level mechanism, finish control telephony interface, trunk interface.Telephony interface, trunk interface, switching network, DSP passage transmit sound signal stream mutually under the control of call treatment task, finish the function of digital SPC exchange.Can also with VOIP agreement close fit, realize the VOIP function.
4. database tasks:, provide functions such as number analysis, Route Selection, resource management, resource allocation for call treatment task and the service of VOIP agreement task.
5.VOIP the agreement task realizes the function of VOIP, realization is communicated by letter with other voice gateways, with the close collaboration of call treatment task, when voice communication is provided, can also provide facsimile service.
6. charging task is from the call treatment task: and VOIP agreement task collects all charging raw information, and send to accounting server, all callings can be chargeed on accounting server, be fit to the operation requirement of operator or virtual operator.
7. maintain configuration task: finish the data maintenance and the management of system, multiple maintenance mode is provided, comprise the multiple ways of safeguarding such as HTTP mode, Telnet mode, SNMP mode.The maintain configuration task will with the database tasks close collaboration, finish configuration and maintenance jointly to system.
8.DSP control communication task: finish control to digital signal processor (DSP), and realize communicating by letter of systems soft ware and DSP, can give network task with the voice packet through overcompression of DSP output, also the VoP that network task can be received sends to DSP, by outputing to digital switching network behind the DSP decompress(ion), output to each interface (telephony interface and trunk interface) by digital switching network, realize the VOIP function.
Claims (3)
1. a voice gateways communication apparatus comprises several telephony interfaces and trunk interface, digital signal processor, central processing unit and Ethernet interface; Ethernet one terminates on the central processing unit, and the other end is received on the outer data network; It is characterized in that, also comprise a time-division digital switching network chip, all telephony interfaces all are connected with time-division digital switching network chip by coding/decoding module with trunk interface, digital signal processor also therewith time-division digital switching network chip be connected, under the control of central processing unit, when being positioned at the gateway outside by call object, after call voice converts digital signal to by coding/decoding module, be transferred to digital signal processor by the time-division digital switching network and compress processing, send to by call object by outer data network by central processing unit then; When being positioned at intra-gateway or trunk interface by call object, voice signal converts the coding/decoding module that directly exchanges to the called side correspondence after the digital signal by the time-division digital switching network to, and decoding reduction back arrives by call object.
2. voice gateways communication apparatus according to claim 1, it is characterized in that: under the control of central processing unit, all telephony interfaces, trunk interface, digital signal processor interface can both be carried out intercoursing of signal by the time-division digital switching network in the time-division digital switching network chip.，
3. voice gateways means of communication comprise:
A. be subjected to call signal from telephony interface or trunk interface termination, the analog voice call analog signal conversion is become digital signal and encode by coding/decoding module;
It is characterized in that, further comprising the steps of:
B. judge by call object and be positioned at still outside of intra-gateway; If be positioned at the gateway outside, then carry out following steps c by call object; If be positioned at intra-gateway or trunk interface, then carry out following steps d by call object;
C. be transferred to digital signal processor by the time-division digital switching network, compress processing by digital signal processor word signal and form voice packet, by central processing unit this voice packet is sent to outer data network then, arrive by call object by outer data network;
D. under the control of central processing unit, the digital signal of having encoded is directly arrived by the coding/decoding module of call object correspondence by time-division digital switching network exchange, be reduced into analog voice signal, finally arrive by call object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031237975A CN100452784C (en) | 2003-06-03 | 2003-06-03 | Phonetical gate communication device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031237975A CN100452784C (en) | 2003-06-03 | 2003-06-03 | Phonetical gate communication device and method |
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| CN1553666A CN1553666A (en) | 2004-12-08 |
| CN100452784C true CN100452784C (en) | 2009-01-14 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102045464B (en) * | 2009-10-15 | 2014-01-01 | 中兴通讯股份有限公司 | Method and device for realizing called relay in telecommunication access network |
| US20110149732A1 (en) * | 2009-12-18 | 2011-06-23 | Alcatel-Lucent Usa Inc. | Method of improving quality of service for voice calls handled by a network element |
| CN110944245A (en) * | 2019-12-17 | 2020-03-31 | 佛山市冰河电子科技有限公司 | Digital-analog integrated program-controlled subscriber exchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000054470A1 (en) * | 1999-03-12 | 2000-09-14 | Lextron Systems, Inc. | System for controlling processing of data passing through network gateways between two disparate communications networks |
| CN1390021A (en) * | 2001-05-26 | 2003-01-08 | 三星电子株式会社 | Net gate based on internet agreement transmission language and its control method |
| KR20030028784A (en) * | 2003-02-12 | 2003-04-10 | 주식회사데이콤 | Multimedia Terminal Gateway |
| US20030076815A1 (en) * | 2001-10-19 | 2003-04-24 | Miller Frank William | Voice over IP architecture |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000054470A1 (en) * | 1999-03-12 | 2000-09-14 | Lextron Systems, Inc. | System for controlling processing of data passing through network gateways between two disparate communications networks |
| CN1390021A (en) * | 2001-05-26 | 2003-01-08 | 三星电子株式会社 | Net gate based on internet agreement transmission language and its control method |
| US20030076815A1 (en) * | 2001-10-19 | 2003-04-24 | Miller Frank William | Voice over IP architecture |
| KR20030028784A (en) * | 2003-02-12 | 2003-04-10 | 주식회사데이콤 | Multimedia Terminal Gateway |
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