CN2696217Y - Speech gateway communication equipment - Google Patents

Abstract

The utility model discloses speech gateway communication equipment which comprises a plurality of telephone interfaces and relay interfaces, a digital signal processor (DSP), a central processing unit (CPU) and an Ethernet interface, wherein, one end of the Ethernet is connected with the central processing unit (CPU), and the other end is connected with an external data network. The utility model also comprises an hour and minute digital exchanging network chip; all the telephone interfaces and relay interfaces, and the DSP are connected with the hour and minute digital exchanging network chip by a codec. The equipment of the utility model combines the advantages of the speech gateway equipment of the traditional program control exchange equipment, perfects the function of communication equipment, effectively lowers cost and obviously enhances the speech quality of inner conversation.

Description

A kind of voice gateways communication apparatus

Technical field

The utility model relates to a kind of speech communication equipment, relates in particular to a kind of voice gateways communication apparatus 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 primary processor CPU.Comprised among the primary 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.

The utility model content

The purpose of this utility model is that a kind of novel voice gateway communication device that traditional PBX technology is combined with the VOIP technology is provided.

The utility model provides a kind of novel voice gateway communication device that traditional PBX technology is combined with the VOIP technology, comprises several telephony interfaces and trunk interface, digital signal processor (DSP), primary processor (CPU) and Ethernet interface; Ethernet one terminates on the primary processor (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 pass through coding/decoding module (Codec) with trunk interface and are connected with time-division digital switching network chip; 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 primary 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, primary processor CPU sends to outer data network with this voice packet, arrives by call object by outer data network.Therefore, the utlity model has the function of passing through internet transmission voice (VoIP).And when being positioned at intra-gateway or trunk interface by call object, under the control of primary 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 utlity model has all functions of digital SPC exchange.

The utility model has added time-division digital switching network chip in common voice gateways, by the software control handling process of primary processor, realize communication function simultaneously.Compare with traditional PBX, the utility model has remarkable advantages, as: telephone network and computer network are unified into an integral body, dual-use or use more, 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 utility model can be realized 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 utility model.Therefore, the utility model 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 utility model has not only been 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 the utility model voice gateways communication apparatus.

Fig. 4 is the functional module diagram of the time-division digital switching network chip and the primary processor (CPU) of the utility model equipment.

Embodiment

Below in conjunction with accompanying drawing the utility model equipment is described in further detail.

Fig. 3 is the circuit connection side block diagram of the utility model equipment, and voice gateways communication apparatus of the present utility model comprises several telephony interfaces and trunk interface, digital signal processor (DSP), primary processor (CPU) and Ethernet interface; Ethernet one terminates on the primary processor (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 pass through coding/decoding module (Codec) with trunk interface and are connected with time-division digital switching network chip; 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 (Codec) all are the common components in PBX technology and the VOIP technical field, can commercially obtain.Time-division digital switching network chip and primary processor (CPU) are then pressed the function needs of the utility model equipment, 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.As seen from Figure 4, the task module of CPU 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 voice over ip feature.

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.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 voice over ip feature.

7. 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.

8. 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.

On the basis of having understood content of the present utility model, those of ordinary skills learn the particular content of each module easily, and know and how to realize them.

Claims (2)

1. a voice gateways communication apparatus comprises several telephony interfaces and trunk interface, digital signal processor (DSP), primary processor (CPU) and Ethernet interface; Ethernet one terminates on the primary processor (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 pass through coding/decoding module (Codec) with trunk interface and are connected with time-division digital switching network chip, DSP also therewith time-division digital switching network chip be connected.

2. voice gateways communication apparatus according to claim 1, it is characterized in that: under the control of CPU, 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.

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