CN101227534B - Component and method for implementing VoIP gateway simulation access and VoIP gateway - Google Patents
Component and method for implementing VoIP gateway simulation access and VoIP gateway Download PDFInfo
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- CN101227534B CN101227534B CN2008100091607A CN200810009160A CN101227534B CN 101227534 B CN101227534 B CN 101227534B CN 2008100091607 A CN2008100091607 A CN 2008100091607A CN 200810009160 A CN200810009160 A CN 200810009160A CN 101227534 B CN101227534 B CN 101227534B
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Abstract
The invention discloses an assembly for realizing the VoIP gateway analogue switch-in, a VoIP gateway and a process for realizing the VoIP gateway analogue switch-in. The process comprises initializing the VoIP gateway execution hardware resource, identifying the type and the number of an external analogue interface and conducting the switch-in adaption, and realizing the switch-in control between the IP network and the analogue terminal based on the external analogue interface and the analogue/digital conversion. The number of the analogue interface can not be limited by the hardware space of the VoIP gateway through the invention, and the support for the VoIP with high capacity analogue switch-in can be provided, the relative analogue switch-in component can be changed according to the actual demand, thereby flexibly changing the interface property to suit to the different demands of users.
Description
Technical field
The present invention relates to VoIP (Voice over IP, ip voice) technical field, relate in particular to a kind of assembly and method that realizes that the voip gateway simulation inserts, and a kind of voip gateway.
Background technology
Voip gateway, comprise voice gateways (Voice Gateway, be called for short VG) and the router etc. of voice IP access function is provided, it is the important simulation access device in the voip solution, be used for directly or indirectly from pseudo-terminal, comprise that the analogue data that terminals such as phone, fax receive is sent to IP network after Real Time Compression and protocol conversion, thereby realize the transmission of traditional analog signal on IP network; Wherein, voip gateway is generally by standard analog telephones interface FXS (Foreign eXchange Station, FXS) directly receives analogue data from pseudo-terminal, by standard analog trunk interface FXO (Foreign eXchange Office, FXO) or standard analog relaying E﹠amp; M (Ear﹠amp; Mouth) interface receives analogue data from pseudo-terminal indirectly through PSTN (Public Switched Telephone Network, public switched telephone network (PSTN)).
Generally speaking, realize the access of analogue data by on voip gateway, adopting the high-density voice integrated circuit board, thereby VoIP be provided service that this is the means that solution simulation commonly used at present inserts.But also there is drawback this scheme in itself: because Codec (Coder﹠amp; Decoder, codec) take up room bigger with the analog interface that is connected pseudo-terminal, therefore be subject to the inner space of voip gateway, be difficult to integrated a large amount of analog interface on the high-density voice integrated circuit board, can't provide support hundreds of road and above simulation access; Simultaneously, this analog interface limited amount has also caused the processing resource of voip gateway to be difficult to make full use of in the situation of inner space, and composition is higher relatively; Particularly, the analog interface type of voip gateway is fixed often, and when therefore needing to change interface type, the replacing of only carrying out voip gateway could continue to provide VoIP service, the non-constant of flexibility and adaptability.
Summary of the invention
Embodiments of the invention aim to provide can break away from the voip gateway spatial limitation, and the simulation access scheme of the voip gateway of can the flexible adaptation analog interface adjusting.
For achieving the above object, embodiments of the invention provide a kind of assembly of realizing that the voip gateway simulation inserts, are applicable to the voip gateway that is arranged between pseudo-terminal and the IP network; Comprise:
Be arranged at the built-in interface parts in this voip gateway;
Be placed on simulation this voip gateway, that be connected with these built-in interface parts by cable and insert parts, be used to carry out the D/A switch between analog signal access and analog signal and the digital signal;
Wherein, this simulation inserts parts and carries out the hardware resource initialization by this voip gateway, comprises that quantity and the type of discerning the analog interface that it provided insert adaptive; And, this simulation inserts the stage of parts in this IP network and pseudo-terminal executive communication, receive analog signal from pseudo-terminal, carry out analog-to-digital conversion and offer voip gateway through these built-in interface parts, and, to carry out digital-to-analogue conversion from the digital signal that voip gateway receives through these built-in interface parts, and offer pseudo-terminal.
For achieving the above object, embodiments of the invention also provide a kind of voip gateway, are arranged between pseudo-terminal and the IP network; Comprise:
The assembly that aforesaid realization voip gateway simulation inserts provides external analog interface and mould/number conversion;
Insert adaptor parts, the assembly that inserts with this realization voip gateway simulation is connected, and is used for discerning the type and the quantity of its analog interface, and inserting adaptive in that this assembly is carried out the hardware resource initialization;
The DSP array, be connected with the assembly that this realization voip gateway simulation inserts with this access adaptor parts, be used for the assembly that this realization voip gateway simulation inserts being carried out access control according to the hardware resource initialization result, the digital signal that the assembly that this realization voip gateway simulation is inserted receives sends to the IP network interface unit, and the digital signal that this IP network interface unit receives is offered the assembly that this realization voip gateway simulation inserts.
For achieving the above object, embodiments of the invention also provide a kind of method that realizes that the voip gateway simulation inserts, and are applicable to the voip gateway that is arranged between pseudo-terminal and the IP network; Voip gateway is carried out following steps:
S1, the initialization of execution hardware resource;
S2, identification external simulation interface type and quantity, and insert adaptive;
S3, by external analog interface and mould/number conversion, realize the access control between this IP network and the pseudo-terminal.
As shown from the above technical solution, embodiments of the invention have following beneficial effect by voip gateway is adopted external analog interface and mould/number conversion:
1, the quantity of analog interface no longer is subjected to the restriction of the hardware space of voip gateway, and the support that big capacity VoIP simulation is inserted can be provided;
2, can change corresponding simulation according to the actual needs of network and insert parts, thereby change interface attributes flexibly to adapt to the different demands of user.
With reference to the accompanying drawing description of a preferred embodiment, above-mentioned and other purpose of the present invention, feature and advantage will be more obvious by following.
Description of drawings
Fig. 1 is the block diagram of assembly one embodiment of realization voip gateway simulation access provided by the present invention;
Fig. 2 is the block diagram of another embodiment of assembly of realization voip gateway simulation access provided by the present invention;
Fig. 3 is the assembly one concrete schematic diagram of using that realization voip gateway simulation provided by the present invention inserts;
Fig. 4 is the block diagram of voip gateway one embodiment provided by the present invention;
Fig. 5 is the flow chart of method one embodiment of realization voip gateway simulation access provided by the present invention;
Fig. 6 A, Fig. 6 B are the flow chart of the specific embodiment of access control between middle IP network embodiment illustrated in fig. 5 and the pseudo-terminal.
Embodiment
To describe specific embodiments of the invention in detail below.Should be noted that the embodiments described herein only is used to illustrate, be not limited to the present invention.
Technical conceive of the present invention is, adopt external simulation to insert accessory and realize the access of voip gateway analog signal, promptly Codec and these functional chips that take up room of analog interface, insert voip gateway by external mode, thereby reach the purpose that is not subject to the space of voip gateway own, the expansion that is easy to realize to simulate access to be making full use of the disposal ability of voip gateway, and is easy to insert accessory by replacing simulation, realizes the analog interface adjustment cheaply, flexibly.
At first, embodiments of the invention provide a kind of assembly 100 of realizing that the voip gateway simulation inserts, are applicable to the voip gateway 10 that is arranged between pseudo-terminal and the IP network, referring to Fig. 1; Comprise:
Be arranged at the built-in interface parts 101 in the voip gateway 10;
Be placed on simulation voip gateway 10, that be connected with built-in interface parts 101 by cable 103 and insert parts 102, this simulation inserts parts 102 directly or be connected with pseudo-terminal indirectly, is used to carry out the D/A switch function between analog signal access and analog signal and the digital signal; Wherein, being connected with pseudo-terminal indirectly generally is to be connected with pseudo-terminal by PSTN.
In the above-mentioned assembly that provides 100, for built-in interface parts 101, it can adopt the form of plug-in card to embed in the draw-in groove of voip gateway 10, perhaps, is integrated in the voip gateway 10.
For cable 103, can adopt twisted-pair feeder, coaxial line, optical fiber etc., finish built-in interface parts 101 and external simulation and insert data and control signal transfer function between the parts 102.For a person skilled in the art, connect separated components by cable 103 and be easy to realize, do not repeat them here.
As can be seen, the above-mentioned built-in interface parts 101 of assembly 100 that provide insert the function that parts 102 have been equivalent to separate existing high-density voice integrated circuit board with simulation, wherein a part keeps being arranged in the voip gateway, play the effect that interface connects, another part, the big function that just takes up room comprises that D/A switch and analog interface function are separated to external simulation and insert in the parts 102 and go, thereby under the prerequisite that does not increase the voip gateway space, can expand analog interface quantity arbitrarily.
But be not the whole creation point place of the present invention simple the separation.After satisfying the separation of high-density voice integrated circuit board function, voip gateway is to the access control of incoming analog signal, voip gateway 10 needs to carry out the hardware resource initialization, realization inserts the quantity of the analog interface that parts 102 are provided and the identification of type to simulation, and insert adaptive, corresponding relation and configuration encoding and decoding strategy such as A rule, μ rule or linear PCM (PulseCode Modulation, pulse code modulation) data etc. such as adaptive corresponding call flow process, configuration external simulation interface and number.This initialization procedure generally occurs in voip gateway 10 and powers on the stage, when perhaps simulation inserts parts 102 access voip gateways 10.Through above-mentioned processing, voip gateway 10 can be known the attribute of each analog interface that is inserted, thereby voip gateway 10 can realize that simulation inserts by distinct interface being called the corresponding call flow process.
The IP network after realizing the simulation access and the stage of pseudo-terminal executive communication, built-in interface parts 101 and simulation insert parts 102 in conjunction with the function of finishing existing high-density voice integrated circuit board, comprise: simulation inserts parts 102 and receives analog signal from pseudo-terminal, carry out analog-to-digital conversion and offer voip gateway 10 through built-in interface parts 101, and, to carry out digital-to-analogue conversion from the digital signal that voip gateway 10 receives through built-in interface parts 101, and offer pseudo-terminal.
In sum, the assembly 100 that the realization voip gateway simulation that present embodiment provided inserts is by adopting external analog signal to insert and mould/number conversion to voip gateway 10, the quantity that analog signal is inserted no longer is subjected to the restriction of the hardware space of voip gateway, insert parts 102 by flexible expansion simulation, the support that big capacity VoIP simulation is inserted can be provided, thereby make full use of the disposal ability of voip gateway, for example, can be at the 2U height, on the standard rack space of 443mm, realize that at least 200 road FXS voice lines insert, this makes to be difficult to realize under the environment of the integrated high-density voice integrated circuit board of voip gateway; Simultaneously, because voip gateway can come adaptive various types of simulation to insert parts 102 by hardware initialization, therefore, can change corresponding simulation according to the actual needs of network and insert parts 102, thereby change interface attributes flexibly to adapt to the different demands of user, it is with low cost.
Concrete, Fig. 2 has shown the block diagram of assembly 100 1 concrete structures that realization voip gateway simulation provided by the present invention inserts.
Wherein, simulation inserts parts 102 and comprises analog interface 1021, this analog interface 1021 directly or be connected with pseudo-terminal indirectly, to receive and dispatch analog signal.Its concrete connected mode can adopt plain old telephone twisted-pair feeder or other known voice transfer cable.Particularly, insert parts 102 for simulation, it allows to exist dissimilar analog interface 1021, and the analog interface 1021 that promptly is connected with pseudo-terminal can be FXS interface, FXO interface, E﹠amp; One of M interface or combination in any also can be the analog interfaces of other type; Generally speaking, FXO and E﹠amp; The M interface generally is to be connected with pseudo-terminal by PSTN, and the FXS interface can directly connect pseudo-terminal, as telephone set or facsimile machine.
In addition, simulation access parts 102 also comprise:
Encoding and decoding array (Codec) 1022, be connected with analog interface 1021, be used to carry out the D/A switch between analog signal and the digital signal, analog signals such as voice signal that analog interface 1021 is inserted or facsimile signal are encoded to digital signal, such as carrying out pcm encoder; And the digital signal decoding that will receive from built-in interface parts 101 is a general analogue signal.Above-mentioned encoding-decoding process is finished by hardware chip, its encoding and decoding strategy, such as carrying out pcm encoder, and adopt that A rule or μ restrain etc., disposed by the type of the control module in the voip gateway at initial phase, in follow-up processing procedure, generally be need not user intervention according to analog interface 1021.
First digital interface 1023, be connected with built-in interface parts 101 with encoding and decoding array 1022, be used for by cable 103 from voip gateway 10 transmitting-receiving digital signals, comprise that receiving encoding and decoding array 1022 carries out the digital signal after the analog-to-digital conversion and be transmitted to built-in interface parts 101, receive the digital signal that built-in interface parts 101 send and be transmitted to encoding and decoding array 1022 and carry out digital-to-analogue conversion.
Accordingly, built-in interface parts 101 comprise: second digital interface 1011;
This second digital interface 1011 is connected by cable 103 with first digital interface 1023, be used for the digital signal of first digital interface, 1023 transmissions and be transmitted to voip gateway 10, receive the digital signal of voip gateway 10 transmissions and be transmitted to first digital interface 1011, thereby realize that simulation inserts parts 102 arrive voip gateway 10 by built-in interface parts 101 transfer of data.
Please, the assembly 100 1 concrete schematic diagrames of using of the realization voip gateway simulation access that the foregoing description provided have been shown in conjunction with Fig. 3.In this concrete application, the built-in interface parts are arranged in the groove position 4 of voip gateway and provide second digital interface, and simulation inserts parts and is connected with the built-in interface parts by cable, and Codec function and analog interface are provided.By analog interface, simulation inserts parts and connects pseudo-terminal through the normal speech twisted-pair feeder, in this concrete application, is connected with voice terminal by the terminal voice distributing frame.
Accordingly, embodiments of the invention also provide a kind of voip gateway 10, are arranged between pseudo-terminal 30 and the IP network 20.It may be noted that voip gateway 10 is directly or by the PSTN network to connect pseudo-terminal 30, this pseudo-terminal 30 comprises voice terminal and/or facsimile terminal at least.
As shown in Figure 4, this voip gateway 10 comprises:
The assembly 100 that the realization voip gateway simulation that the foregoing description provides inserts provides external analog interface and mould/number conversion.
Carry out the IP network interface unit 200 of IP data encapsulation/decapsulation.
Insert adaptor parts 300, be connected, be used for assembly 100 is carried out the hardware resource initialization, discern the type and the quantity of its analog interface, and insert adaptive with realizing the assembly 100 that the voip gateway simulation inserts;
Wherein, insert adaptive can comprising according to the type and the quantity of analog interface: register its external analog interface type and quantity, and adaptive corresponding access call flow.Such as, discern external when being the FXS interface, corresponding determine the call flow of this interface be: when when this interface receives off hook signal, the Sending dialled number sound is waited for dialing; For another example, discern external when being the FXO interface, corresponding determine the call flow of this interface be: off-hook initiatively when receiving ring back tone.
Type and quantity according to analog interface insert adaptive can also comprising: for external analog interface distributes corresponding access code, be about to telephone number/fax number that voip gateway supports etc. and add and be assigned on the corresponding interface.The distribution that it is pointed out that access code can be carried out automatically by voip gateway, but preferable, in inserting adaptor parts 300, often provide external interface, allow the voip gateway administrative staff according to actual needs, carry out the configuration and the adjustment of corresponding analog interface.
In addition, type and the quantity according to analog interface inserts adaptive can also comprising: dispose the encoding and decoding strategy, such as being to adopt the A rule to carry out D/A switch, still adopt the μ rule to carry out D/A switch etc.
Simultaneously, insert adaptive can also comprising according to the type and the quantity of analog interface: the configuration Compression Strategies, such as, set up the compression/de-compression strategy of from digital signal (as PCM) to the packed data form (as G.723 or G.729 waiting); For instance, the PCM signal that receives can be compressed by compress mode G.729, and the G.729 packed data that will receive decompresses and is reduced to the PCM signal.
The process of above-mentioned compression/de-compression is an optional process, when having adopted compression/de-compression when operation, can reduce after the follow-up IP of the being encapsulated as data the taking of the network bandwidth, and is convenient to online transmission.But this compression/decompression process need consume bigger calculation resources, and occupied the major part cost of voip gateway, therefore consider the convertibility and the disposal ability of external module 100, when adopting this function, the DSP array 400 that need be placed on voip gateway inside is carried out.
This DSP array 400 is connected with the assembly 100 that this realization voip gateway simulation inserts with access adaptor parts 300, be used for the assembly 100 of realizing voip gateway simulation access being carried out access controls according to the hardware resource initialization result, comprise and to realize that the digital signal that assembly 100 that the voip gateway simulation inserts receives sends to IP network interface unit 200, and the digital signal that IP network interface unit 200 receives is offered the assembly 100 of realizing that the voip gateway simulation inserts.
When having introduced the compression/de-compression function, DSP array 400 comprises compression/de-compression module (not shown), be used for the digital signal that receives from the assembly 100 of realizing voip gateway simulation access is compressed, and the digital signal that receives from IP network interface unit 200 is decompressed.Obviously, carry out the compression/de-compression of data in voip gateway, the formation of simplified assembly 100 greatly reduces the cost of assembly 100.
The voip gateway 10 that provides by present embodiment as can be seen, at first, by the assembly 100 of realizing that the voip gateway simulation inserts, but this voip gateway 10 can support the VoIP simulation of big capacity flexible expansion to insert; Simultaneously, this voip gateway is by adaptive different external analog interface, can support the simulation access scheme of low cost flexible configuration analog interface, avoided in the prior art at different analog interface demands, what must corresponding replacing voip gateway be caused involves great expense and the problem of very flexible, thereby saving equipment and human cost reduce the engineering maintenance expense.
Further, the embodiment of the invention also provides a kind of method that realizes that the voip gateway simulation inserts, and is applicable to the voip gateway that is arranged between pseudo-terminal and the IP network; Same, this voip gateway can directly or indirectly be connected with pseudo-terminal.
As shown in Figure 5, an embodiment of the method for this realization voip gateway simulation access may further comprise the steps:
S1, voip gateway are carried out the hardware resource initialization; When this step S1 generally occurs in voip gateway and powers on, when perhaps external assembly inserts voip gateway;
S2, voip gateway are discerned the type and the quantity of its external simulation interface, and insert adaptively, specifically can comprise:
The type and the quantity of identification external simulation interface;
This external simulation interface is registered adaptive corresponding access call flow;
Be the corresponding access code of this external simulation interface assignment;
Be this external simulation interface configuration encoding and decoding strategy.
In this step S2, allow the voip gateway administrative staff to carry out the configuration and the adjustment of corresponding analog interface;
In addition, carry out data compression/decompression if desired and contract, also need corresponding configuration compression/de-compression strategy so among the step S2.
S3, by this external analog interface and mould/number conversion, realize the access control between IP network and the pseudo-terminal.
Concrete, step S3 realizes that the communication between IP network and the PSTN network comprises:
S31, voip gateway realize the step of the communication from the pseudo-terminal to the IP network based on external analog interface, as shown in Figure 6A:
S311, by external analog interface, receiving analog signal and carry out external analog-to-digital conversion from pseudo-terminal is digital signal, for example, is the PCM signal with common analog signal conversion; This process is finished outside voip gateway;
S312, digital signal is compressed, this process is finished in voip gateway inside; It should be noted that this step is optional;
S313, the data after the compression are carried out IP message encapsulation, and send to IP network;
Obviously, when not introducing step S312, step S313 directly carries out the encapsulation of IP message to the digital signal after the external analog-to-digital conversion, but will take more IP network bandwidth after its encapsulation;
And,
S32, voip gateway realize the step of the communication from the IP network to the pseudo-terminal based on external analog interface, shown in Fig. 6 B:
The IP data that S321, decapsulation acquisition receive from IP network;
S322, the above-mentioned data that decompress, this process is also finished in voip gateway inside; It should be noted that this step S322 and step S312 are corresponding execution;
S323, digital signal is carried out external digital-to-analogue conversion is analog signal, and sends to pseudo-terminal by external analog interface; This process is finished outside voip gateway.
As can be seen, the compression/de-compression of data, encapsulation/decapsulation handle and CCF is realized by voip gateway, and the function of Codec and analog interface is finished by external equipment (inserting parts as simulation provided by the present invention), therefore, not only broken through the limited space of voip gateway, and by changing the demand that external device can realize that port changes, flexible adaptation user's different demands.
Be example with a FXS port as the situation of caller below, after adopting the realization voip gateway simulation cut-in method that the embodiment of the invention provided, the access control between IP network and the pseudo-terminal is described:
When the analog interface of the actual access of voip gateway initialization and insert accordingly adaptive after, wait pending calling; In this specific embodiment, inserting parts with the external simulation as autonomous device is example, and it is by cable, and built-in interface parts and voip gateway in being built in voip gateway carry out data communication;
If when a FXS speech interface detects off hook signal, simulation inserts parts this information is reported voip gateway by cable;
Voip gateway is handled this message, and the dialing tone data are sent to the corresponding port that simulation inserts parts by cable;
After hearing dialing tone, the user begins dialing;
Voip gateway detects first number, stops the Sending dialled number sound data;
The user continues dialing;
Voip gateway mates according to the number received, and selects suitable calling route, correspondingly inserts parts to user's playing RBT or busy tone (if called the line is busy) by simulation;
If the opposite end off-hook, the conversation beginning;
Simulation inserts parts and gives voip gateway with speech data, voip gateway compresses (by the DSP ARRAY PROCESSING) and IP encapsulation to data, send to callee side, and will carry out decapsulation, decompression (by the DSP ARRAY PROCESSING) from the IP message that callee side obtains, decoded speech data is sent to simulation insert parts, insert parts by simulation and be transmitted to the user;
Talk-through, user's on-hook, simulation inserts parts and detects user's on-hook, and gives voip gateway with this information reporting, and voip gateway cuts off corresponding ip voice link, discharges the encoding and decoding resource.
Though described the present invention with reference to several exemplary embodiments, should be appreciated that used term is explanation and exemplary and nonrestrictive term.The spirit or the essence that do not break away from invention because the present invention can specifically implement in a variety of forms, so be to be understood that, the foregoing description is not limited to any aforesaid details, and should be in the spirit and scope that claim limited of enclosing explain widely, therefore fall into whole variations in claim or its equivalent scope and remodeling and all should be the claim of enclosing and contain.
Claims (11)
1. an assembly of realizing that the voip gateway simulation inserts is applicable to the voip gateway that is arranged between pseudo-terminal and the IP network; It is characterized in that, comprising:
Be arranged at the built-in interface parts in the described voip gateway;
Be placed on simulation described voip gateway, that be connected with described built-in interface parts by cable and insert parts, be used to carry out mould/number conversion and D/A switch between analog signal access and analog signal and the digital signal;
Wherein, described simulation inserts parts and carries out the hardware resource initialization by described voip gateway, comprises that quantity and the type of discerning the analog interface that it provided insert adaptive; And, described simulation inserts the stage of parts in described IP network and pseudo-terminal executive communication, receive analog signal from pseudo-terminal, carry out mould/number conversion and offer voip gateway through described built-in interface parts, and, to carry out D/A switch from the digital signal that voip gateway receives through described built-in interface parts, and offer described pseudo-terminal.
2. the assembly that realization voip gateway simulation according to claim 1 inserts is characterized in that described built-in interface parts embed in the draw-in groove of described voip gateway with the form of plug-in card, and perhaps, described built-in interface parts are integrated in the described voip gateway.
3. the assembly that realization voip gateway simulation according to claim 1 and 2 inserts is characterized in that, described simulation inserts parts and comprises:
Analog interface is used for directly or is connected with pseudo-terminal indirectly, to receive and dispatch analog signal;
The encoding and decoding array is connected with described analog interface, is used to carry out mould/number conversion and D/A switch between analog signal and the digital signal;
First digital interface, be connected with the built-in interface parts with described encoding and decoding array, be used to receive described encoding and decoding array and carry out the digital signal after mould/number conversion and be transmitted to described built-in interface parts, receive the digital signal that described built-in interface parts send and be transmitted to described encoding and decoding array and carry out D/A switch.
4. the assembly that realization voip gateway simulation according to claim 3 inserts is characterized in that described analog interface comprises FXS interface, FXO interface, E﹠amp at least; One of M interface or combination in any.
5. the assembly that realization voip gateway simulation according to claim 3 inserts is characterized in that described built-in interface parts comprise: second digital interface;
Wherein, described second digital interface is connected by described cable with described first digital interface, be used to receive the digital signal of described first digital interface transmission and be transmitted to described voip gateway, receive the digital signal of described voip gateway transmission and be transmitted to described first digital interface.
6. a voip gateway is arranged between pseudo-terminal and the IP network; It is characterized in that, comprising:
The assembly that arbitrary described realization voip gateway simulation inserts as claim 1-5 provides external analog interface and mould/number conversion and D/A switch;
Insert adaptor parts, the assembly that inserts with described realization voip gateway simulation is connected, and is used for described assembly is carried out the hardware resource initialization, discerns the type and the quantity of its analog interface, and inserts adaptive;
The DSP array, be connected with the assembly that described realization voip gateway simulation inserts with described access adaptor parts, be used for the assembly that described realization voip gateway simulation inserts being carried out access control according to the hardware resource initialization result, the digital signal that the assembly that described realization voip gateway simulation is inserted receives sends to the IP network interface unit, and the digital signal that the IP network interface unit receives is offered the assembly that described realization voip gateway simulation inserts;
The IP network interface unit is connected with described DSP array, is used for the digital signal that described DSP array sends is encapsulated as the IP data and offers IP network, will be descapsulated into digital signal from the IP data that IP network receives and offer described DSP array.
7. voip gateway according to claim 6, it is characterized in that, described DSP array comprises the compression/de-compression module, be used for the digital signal that the assembly that inserts from described realization voip gateway simulation receives is compressed, and the digital signal that receives from described IP network interface unit is decompressed.
8. according to claim 6 or 7 described voip gateways, it is characterized in that described voip gateway directly or by the PSTN network connects pseudo-terminal, described pseudo-terminal comprises voice terminal and/or facsimile terminal at least.
9. a method that realizes that the voip gateway simulation inserts is applicable to the voip gateway that is arranged between pseudo-terminal and the IP network; It is characterized in that voip gateway is carried out following steps:
S1, the initialization of execution hardware resource;
The type and the quantity of S2, identification external simulation interface, and insert adaptive;
S3, by external analog interface, voip gateway carries out mould/number conversion to the analog signal that receives from pseudo-terminal, after being converted to digital signal, after the encapsulation of IP message, send to described IP network again, perhaps the IP data that obtain from described IP network are carried out decapsulation, obtain digital signal and after D/A switch is converted to analog signal, send to described pseudo-terminal again, realize the access control between described IP network and the pseudo-terminal.
10. the method that realization voip gateway simulation according to claim 9 inserts is characterized in that described step S2 comprises:
The type and the quantity of identification external simulation interface;
Adaptive corresponding access call flow;
Be the corresponding access code of described external simulation interface assignment;
Be described external simulation interface configuration encoding and decoding strategy.
11. the method that realization voip gateway simulation according to claim 9 inserts is characterized in that described step S3 comprises:
S31, voip gateway realize specifically comprising the step of the communication from the pseudo-terminal to the IP network based on described external analog interface:
S3 is by described external analog interface, and receiving analog signal and carry out external mould/number conversion from pseudo-terminal is digital signal;
S312, described digital signal is compressed;
S313, the digital signal after the described compression is carried out IP message encapsulation, and send to described IP network;
And,
S32, voip gateway realize specifically comprising the step of the communication from the IP network to the pseudo-terminal based on described external analog interface:
S321, decapsulation are so that the IP data that acquisition receives from described IP network;
S322, described data decompress;
S323, described digital signal is carried out external D/A switch is analog signal, and sends to described pseudo-terminal by described external analog interface.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6847632B1 (en) * | 1998-12-22 | 2005-01-25 | Nortel Networks Limited | Method and apparatus for digital cellular internet voice communications |
| CN1321382A (en) * | 1999-07-01 | 2001-11-07 | 皇家菲利浦电子有限公司 | Voice-over-IP gateway |
| CN1885838A (en) * | 2005-06-22 | 2006-12-27 | 杭州华为三康技术有限公司 | VoIP gateway and its application method |
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| CN101227534A (en) | 2008-07-23 |
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