CN101090378B - Method and correlation device for identifying and setting call from IP network to PSTN - Google Patents

Method and correlation device for identifying and setting call from IP network to PSTN Download PDF

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Publication number
CN101090378B
CN101090378B CN2007101435142A CN200710143514A CN101090378B CN 101090378 B CN101090378 B CN 101090378B CN 2007101435142 A CN2007101435142 A CN 2007101435142A CN 200710143514 A CN200710143514 A CN 200710143514A CN 101090378 B CN101090378 B CN 101090378B
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China
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pstn
mouth
calling
network
hook
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CN101090378A (en
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张智慧
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New H3C Technologies Co Ltd
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Hangzhou H3C Technologies Co Ltd
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Abstract

This invention discloses a method for identifying and setting up calls from IP to PSTN and related devices, in which, the method is basically used in the relay phone gateway of IP network, when detecting an off-hook signal of a FXS interface, it determines the kind of the necessary call by if it has detected a fork signal of the FXS interface and sets up the call relatively, if it dials the called number directly after off hook, then it is considered that the call set up by the off hook is the internal call of IP network, if it shoots the fork firstly and then dials the called number, it is considered that the call is one from IP to PSTN to route out the call from the relay interface to get the PSTN call.

Description

Identification and method and the related device of setting up calling from the IP network to PSTN
Technical field
The invention belongs to network communications technology field, relate to voip phone, relate in particular to a kind of identification and set up the method and the corresponding device thereof of from the IP network to PSTN, calling out.
Background technology
Growing along with broadband network and IP technology in recent years, The Application of Technology more and more widely for VoIP (Voice over IP, IP phone).Gateway is the visual plant in the IP network, can be divided into carrier class gateway and user side gateway according to application.The user side gateway device is mainly used in sub-district and enterprise, is the bridge of connecting terminal phone and IP network, and major function is to carry out encoding and decoding speech, signaling process, VoIP protocol processes and Routing Protocol processing etc.Voice gateways can connect PSTN (Public Switched Telephone Network simultaneously, public switch telephone network) and IP network and can between automaticallying switch, save a large amount of conversation costs, can also use PSTN to ensure that telephone line is unimpeded forever when unavailable at IP network (outage or route are unreachable).
As shown in Figure 1, available relay voice gateway 110 connects PSTN 120 and IP network 130, and wherein relay voice gateway 110 provides FXS (Foreign Exchange Station, FXS) mouth 111 and relaying mouth 112.Relaying mouth 112 has the branch of analog junction and digital junction.The analog junction of industry widespread usage has FXO (Foreign Exchange Office, FXO) mouth etc. at present, and digital junction has E1, T1 etc.
When phone 150#1 in the IP network 130 attempts to dial in the PSTN 120 phone 150#2, need push earlier on the relaying mouth 112, find called phone 150#2 by PSTN 120 by the number route then, set up at last and call out.Whole call legs is shown in arrow black line among Fig. 1.
Is what relay voice gateway 110 can correctly be judged dial IP phone or pstn telephone as for after phone 150#1 off-hook dialing? in the prior art, each producer realizes that the technical scheme that routes to PSTN from the relaying mouth mainly contains following two kinds.
1, adds group specific code: on equipment, carry out corresponding configuration and specify certain specific code or certain class specific code, when the called number prefix is above-mentioned specific code, then switch to relaying mouth route and go out, otherwise just be counted as the IP Internal call.For example, some solution routes to PSTN by the form of " 9+ called number " or " 0+ called number " from the relaying mouth exactly now, and the called number that starts with other numbers then is considered to the VoIP intercommunication phone.
2, manually control: toggle switch or button are installed on equipment, are dialed inner IP phone or route to PSTN from the relaying mouth by control manually.
For above-mentioned first kind of scheme, mainly there are following 2 deficiencies in it: at first, because specific code can not be conflicted with VoIP in-house network number and/or some particular services, this just need just well plan whole VoIP the whole network at the beginning of networking, and also will take into full account this factor in the time need expanding network future; Secondly, realize going out and PSTN number foundation calling by dialing special number from relaying mouth route, need the user before actual PSTN number, to add group special number and make prefix, these are different with the existing dialing custom of user, may cause user's resentment even abandon use owing to needs change.
For above-mentioned second kind of scheme, its weak point is: use the method for artificial hand switch toggle switch or button need be placed on user's desktop, this not only can increase the hardware cost of user's desktop, and wish that with the user all devices is placed on machine room runs counter to the demand of managing concentratedly and be convenient to safeguard, also obtain higher user satisfaction not too easily.
Summary of the invention
In view of this, the object of the invention is to provide a kind of identification and sets up the method for calling out from the IP network to PSTN, its behind the phone off-hook by whether hooking discern this road and call out whether route to PSTN from the relaying mouth, thereby low-cost and do not change subscriber dialing and solve IP network habitually and discern and set up problem to the calling of PSTN.
Simultaneously, another purpose of the present invention is to provide a kind of identification and sets up the device of calling out from the IP network to PSTN, to support the enforcement of said method.
In order to achieve the above object, the invention discloses a kind of identification and set up the method for from the IP network to PSTN, calling out.This method is applied on the relay voice gateway in the IP network, mainly include: behind the off hook signal that detects a certain FXS mouth, begin to detect user's input, be input as the hooking signal that hooking produces then determine the type that required foundation is called out if detect described user, and set up described calling.Such as, if after off hook signal, directly detect the called number input, think that then the calling of the required foundation of this of user off-hook is the IP network Internal call; If after off hook signal, detect the hooking signal earlier, just detect called number input then, think that then the calling of the required foundation of this of user off-hook is the calling from the IP network to PSTN, correspondingly need this calling is gone out to connect pstn telephone from relaying mouth route.
For above-mentioned identification and the method for setting up calling from the IP network to PSTN, preferably, after the calling of determining required foundation is calling from the IP network to PSTN, the relaying mouth off-hook of control connection PSTN at first, again detected called number is sent to the PSTN side via described relaying mouth, to set up described calling from the IP network to PSTN; Perhaps, wait for that described FXS mouth receives called number and controls the relaying mouth off-hook that connects PSTN on the described relay voice gateway again, and then send to the PSTN side via described relaying mouth with detected called number is disposable, to set up described calling from the IP network to PSTN.
For above-mentioned identification and the method for setting up calling from the IP network to PSTN, preferably, after the calling of determining required foundation is calling from the IP network to PSTN, the closed relaying mouth of PSTN and the relay switch between the described FXS mouth of connecting, and detected called number sent to the PSTN side via described relaying mouth, to set up described calling from the IP network to PSTN; And, further preferably, after described call setup from the IP network to PSTN is finished, also promptly detect the phone on-hook of described FXS mouth after, disconnect the relay switch between described relaying mouth and the described FXS mouth.
Simultaneously, in order to reach above-mentioned another purpose, the invention also discloses a kind of identification and set up the device of from the IP network to PSTN, calling out.This device is applied on the relay voice gateway in the IP network, mainly comprises type of call determining unit and relaying mouth off-hook control unit or relay switch control unit.Described type of call determining unit links to each other with FXS mouth on the described relay voice gateway, be used to accept described FXS mouth off hook signal triggering and begin to detect the hooking signal of described FXS mouth, and when detecting described hooking signal, determine that it is IP network Internal call or the calling from the IP network to PSTN that required foundation is called out.Such as, if after off hook signal, directly detect the called number input, think that then the calling of the required foundation of this of user off-hook is the IP network Internal call; If after off hook signal, detect the hooking signal earlier, just detect called number input then, think that then the calling of the required foundation of this of user off-hook is the calling from the IP network to PSTN, correspondingly need this calling is gone out to connect pstn telephone from relaying mouth route.Described relaying mouth off-hook control unit or relay switch control unit link to each other with described type of call determining unit, are used for determining the described call establishment of control after the calling of required foundation is calling from the IP network to PSTN in described type of call determining unit.
For relaying mouth off-hook control unit, its with described type of call determining unit and described relay voice gateway on be connected PSTN the relaying mouth link to each other; After described type of call determining unit determines that the calling of required foundation is calling from the IP network to PSTN, described relaying mouth off-hook control unit is used to control described relaying mouth off-hook, thereby makes the detected called number of described FXS mouth to send to the PSTN side via described relaying mouth.Perhaps, described relaying mouth off-hook control unit links to each other with described type of call determining unit, described relaying mouth and described FXS mouth; Determine that in described type of call determining unit the calling of required foundation is after calling from the IP network to PSTN and described FXS mouth receive called number, described relaying mouth off-hook control unit is used to control described relaying mouth off-hook, thereby makes the detected called number of described FXS mouth disposablely to send to the PSTN side via described relaying mouth.
For the relay switch control unit, it links to each other with described type of call determining unit with relay switch, and wherein said relay switch is installed between the relaying mouth that connects PSTN on described FXS mouth and the described relay voice gateway.After described type of call determining unit determines that the calling of required foundation is calling from the IP network to PSTN, described relay switch control unit is used for closed described relay switch, thereby makes the detected called number of described FXS mouth to send to the PSTN side via described relaying mouth.Even, further preferably, described relay switch control unit also links to each other with described FXS mouth, after described call setup is finished (after also being the phone on-hook of described FXS mouth), described relay switch control unit is used to disconnect described relay switch, thereby the annexation of described FXS mouth and described relaying mouth is returned to normal.
Technical solution of the present invention has following beneficial effect: at first, by whether whether hooking decides the calling of required foundation to need to route to PSTN from the relaying mouth behind the phone off-hook, make the present invention need before called number, not add and dial special number, thereby do not need the user to change original dialing custom, and then can obtain higher user satisfaction; In addition, the present invention does not need to increase extra hardware device, has good practicability and flexibility.
Description of drawings
Fig. 1 is for setting up the networking schematic diagram of calling out from the IP network to PSTN;
Fig. 2 is the present invention's identification and the flow chart of setting up method first embodiment that calls out from the IP network to PSTN;
Fig. 3 is the present invention's identification and the flow chart of setting up method second embodiment that calls out from the IP network to PSTN;
Fig. 4 is the present invention's identification and the flow chart of setting up method the 3rd embodiment that calls out from the IP network to PSTN;
Fig. 5 is the present invention's identification and the block diagram of setting up device first embodiment that calls out from the IP network to PSTN;
Fig. 6 is the present invention's identification and the block diagram of setting up device second embodiment that calls out from the IP network to PSTN.
Embodiment
Above-mentioned and other technical characterictic of the present invention and beneficial effect will be set forth more fully by the embodiment introduction that the reference accompanying drawing carries out.
At first, see also Fig. 2, it is identification provided by the present invention and the flow chart of setting up method first embodiment that calls out from the IP network to PSTN.
As shown in Figure 2, behind the off hook signal that detects a certain FXS mouth (step 2-B), at first play dialing tone (step 2-1) until detecting user's input (step 2-2).Then, after detecting user's input, then specifically import to determine the type of required foundation calling according to this.Such as, as shown in Figure 2,, think that then the calling of the required foundation of this of user off-hook is the IP network Internal call if this is input as by/called number that the key of dialing causes input (step 2-2-2); If this is input as the hooking signal (step 2-2-1) that hooking produces, think that then the calling of the required foundation of this of user off-hook is the calling from the IP network to PSTN, correspondingly needs this callings is gone out with the connection pstn telephone from relaying mouth route.
Because the focus that the present invention pays close attention to is to set up how simply, easily the calling from the IP network to PSTN, therefore below will be emphatically the subsequent operation of step 2-2-1 be introduced, the subsequent operation of step 2-2-2 then asks the reader consult pertinent literature voluntarily.
As shown in Figure 2, after the calling of determining required foundation is calling (step 2-2-1) from the IP network to PSTN, system will continue to play dialing tone (step 2-2-1-1) and import (step 2-2-1-2) until detecting called number.Then, after detecting the called number input first, repeat the called number input and detect (step 2-2-1-2) until the called number that receives this time calling (step 2-2-1-3).Then, after determining to have received described called number, the relaying mouth off-hook (step 2-2-1-4) of control connection PSTN then, sending to PSTN side (step 2-2-1-5) via this relaying mouth with detected called number is disposable, thereby can correspondingly set up the desirable calling (step 2-E) from the IP network to PSTN of this of user off-hook.
Like this, by whether whether hooking decides the calling of required foundation to need to go out from relaying mouth route behind the phone off-hook, need not the user and change the dialing custom, also need not to increase the additional hardware such as toggle switch or button, make that the invention process cost is low and have very high practicality, obtain higher user satisfaction easily.
Continue, see also Fig. 3, it is identification provided by the present invention and the flow chart of setting up method second embodiment that calls out from the IP network to PSTN.
The same with first embodiment shown in Figure 2, whether whether second embodiment shown in Figure 3 be calling from the IP network to PSTN for the hooking signal comes the corresponding calling of determining required foundation according to detected user input behind the phone off-hook also.
But, in second embodiment shown in Figure 3, after the calling of determining required foundation is calling (step 3-2-1) from the IP network to PSTN, system is the relaying mouth off-hook (step 3-2-1-1) of control connection PSTN at first, and then continues to play dialing tone (step 3-2-1-2) until detecting called number input (step 3-2-1-3).That is to say, Fig. 2 is different to the processing mode of dialing tone with two embodiment shown in Figure 3, in first embodiment shown in Figure 2, continue dialing tone and play, in second embodiment shown in Figure 3, then can continue dialing tone by the pstn telephone that the relaying mouth connects and play by this FXS mouth.
Subsequently, similar with first embodiment shown in Figure 2, after detecting the called number input first, second embodiment shown in Figure 3 also repeats the called number input and detects (step 3-2-1-3) until the called number that receives this time calling (step 3-2-1-4); Different is, owing to controlled relaying mouth off-hook (step 3-2-1-1) before, therefore after determining to have received described called number, second embodiment shown in Figure 3 will directly send to PSTN side (step 3-2-1-5) to detected called number via the relaying mouth, come the corresponding desirable calling (step 3-E) from the IP network to PSTN of this of user off-hook of setting up.
Need to prove, concerning first and second embodiment shown in Fig. 2~3, after corresponding call setup from the IP network to PSTN is finished, also promptly detect the phone on-hook of FXS mouth after, also need control the on-hook of relaying mouth.Those skilled in the art will be understood that the technical scheme of any control relaying mouth on-hook all can be used to first and second embodiment shown in the hookup 2~3, and do not influence the integrality of technical solution of the present invention.
Continue, see also Fig. 4, it is identification provided by the present invention and the flow chart of setting up method the 3rd embodiment that calls out from the IP network to PSTN.
The same with first embodiment shown in Figure 2 and second embodiment shown in Figure 3, whether whether the 3rd embodiment shown in Figure 4 be calling from the IP network to PSTN for the hooking signal comes the corresponding calling of determining required foundation according to detected user input behind the phone off-hook also.
But, in the 3rd embodiment shown in Figure 4, after the calling of determining required foundation was calling (step 4-2-1) from the IP network to PSTN, system was with the relay switch (step 4-2-1-1) between at first closed relaying mouth and this FXS mouth, and wherein the relaying mouth is connected to PSTN; Then, system will continue to play dialing tone (step 4-2-1-2), until detecting called number input (step 4-2-1-3).That is to say, Fig. 4 is different to the implementation that is communicated with relaying mouth and FXS mouth with the embodiment shown in Fig. 2~3, in first and second embodiment shown in Fig. 2~3, come the connected state of corresponding control FXS mouth and relaying mouth, in the 3rd embodiment shown in Figure 4, then come the connected state of corresponding control FXS mouth and relaying mouth by the closure/disconnection of control relay switch by the off-hook/on-hook of control relaying mouth.
Subsequently, similar with second embodiment shown in Figure 3, after detecting the called number input first, the 3rd embodiment shown in Figure 4 also repeats the called number input and detects (step 4-2-1-3) until the called number that receives this time calling (step 4-2-1-4); And, after determining to have received described called number, the 3rd embodiment shown in Figure 4 also will directly send to PSTN side (step 4-2-1-5) to detected called number via the relaying mouth, thereby can correspondingly set up the desirable calling (step 4-E) from the IP network to PSTN of this of user off-hook.
Need to prove, concerning the 3rd embodiment shown in Figure 4, consideration based on system robustness, after corresponding call setup from the IP network to PSTN is finished, after also promptly detecting the phone on-hook of FXS mouth, also need disconnect the relay switch between relaying mouth and the FXS mouth, just relay switch be returned to normal condition.
In addition, the 3rd embodiment shown in Figure 4 is fit to be applied on the equipment that possesses the power-off survival function very much, this be because in closure after the relay switch between relaying mouth and the FXS mouth, the relaying mouth is equivalent to false relaying mouth in work.
Continue, see also Fig. 5, it is identification provided by the present invention and the block diagram of setting up device first embodiment that calls out from the IP network to PSTN.This device 500 is applied on the relay voice gateway 110 in the IP network, is mainly used to help this relay voice gateway 110 to realize from the IP network to PSTN 120 call establishment.
Can be the following any relay voice gateway that may occur of prior art even it should be noted that relay voice gateway 110 shown in Figure 5, and it includes FXS mouth 111, relaying mouth 112, FXS circuit 113 and relaying mouth circuit 114 at least.
As shown in Figure 5, this identification mainly includes type of call determining unit 510 and relaying mouth off-hook control unit 520 with the device 500 of setting up calling from the IP network to PSTN.And, in Fig. 5,1. represent the phone off hook signal of FXS mouth, 2. represent the hooking signal of the phone of FXS mouth by the hooking generation, 3. represent the type that required foundation is called out, 4. represent definite signal that called number has received, 5. represent relaying mouth off-hook control signal.
Type of call determining unit 510 and relaying mouth off-hook control unit 520 link to each other with FXS mouth 111 on the relay voice gateway 110, the off hook signal that is used to accept FXS mouth 111 1. triggering and begin to detect on this FXS mouth 111 the hooking signal 2., and by whether detect the hooking signal 2. and the type that the required foundation of corresponding definite this of user off-hook is called out 3..Such as, if after off hook signal, directly detect the called number input, think that then the calling of the required foundation of this of user off-hook is the IP network Internal call; If after off hook signal, detect the hooking signal earlier, just detect called number input then, think that then the calling of the required foundation of this of user off-hook is the calling from the IP network to PSTN, correspondingly need this calling is gone out to connect pstn telephone from relaying mouth route.
3. and the dislodging machine of corresponding control relaying mouth 112 the relaying mouth 112 that is connected PSTN 120 on relaying mouth off-hook control unit 520 and type of call determining unit 510 and the relay voice gateway 110 links to each other, and is used for the type of calling out according to the required foundation that type of call determining unit 510 is determined.Particularly, after type of call determining unit 510 determines that the calling of required foundation is callings from the IP network to PSTN, relaying mouth off-hook control unit 520 will determine that 3. exporting relaying mouth off-hook control signal 5. arrives relaying mouth 112 according to the type, allow relaying mouth 112 enter off hook state, thereby make that detected called number can send to PSTN side 120 via relaying mouth 112 on the FXS mouth 111.
By above-mentioned introduction as can be known, identification shown in Figure 5 can be used to support aforementioned identification shown in Figure 3 and the realization of setting up method second embodiment that calls out from the IP network to PSTN with the device 500 of setting up calling from the IP network to PSTN.And, with embodiment illustrated in fig. 3 different, can make this device 500 can also support identification shown in Figure 2 and the realization of setting up method first embodiment that from the IP network to PSTN, calls out according to earlier figures 2 by the input of relaying mouth off-hook control unit 520 is suitably adjusted.
Such as, shown in empty arrow line among Fig. 5, allow relaying mouth off-hook control unit 520 also link to each other with FXS mouth 111 on the relay voice gateway 110,4. the definite signal that makes called number receive also becomes the input of relaying mouth off-hook control unit 520.Like this, the condition of relaying mouth off-hook control unit 520 control relaying mouths 112 off-hooks can correspondingly be adjusted to: determine that in type of call determining unit 510 calling of required foundation is after calling from the IP network to PSTN and FXS mouth 111 receive called number, relaying mouth off-hook control unit 510 will enter off hook state according to control relaying mouth 112, thereby make that detected called number can disposablely send to PSTN side 120 via relaying mouth 112 on the FXS mouth 111.
Need to prove that type of call determining unit 510 both can utilize upper layer software (applications) to realize, also can utilize bottom hardware to realize; Those skilled in the art will be understood that any hooking signal detection technique all can be used to realize type of call determining unit 510, and all in protection range of the present invention.Similar with it, the present invention also is not intended to the implementation of relaying mouth off-hook control unit 520 is limited.In general, when utilizing bottom hardware to realize type of call determining unit 510 and utilizing upper layer software (applications) to realize relaying mouth off-hook control unit 520, wherein the flow process of upper layer module will be compared both and all want simple with the implementation of upper layer software (applications), and after setting up calling with PSTN120, also can carry out various signalings controls, thereby can normally carry out every business by the upper strata by relaying mouth 112.
At last, see also Fig. 6, it is identification provided by the present invention and the block diagram of setting up device second embodiment that calls out from the IP network to PSTN.This device 600 is applied on the relay voice gateway 110 in the IP network, is mainly used to help this relay voice gateway 110 to realize from the IP network to PSTN 120 call establishment.
It should be noted that, with shown in Figure 5 similar, even relay voice gateway 110 shown in Figure 6 also can be the following any relay voice gateway that may occur of prior art, and it includes FXS mouth 111, relaying mouth 112, FXS circuit 113 and relaying mouth circuit 114 at least.Yet relay voice gateway 110 shown in Figure 6 also includes relay switch 115, also is that relay voice gateway 110 shown in Figure 6 has the power-off survival function.
As shown in Figure 6, this identification mainly includes type of call determining unit 610 and relay switch control unit 620 with the device 600 of setting up calling from the IP network to PSTN.And, in Fig. 6,1. represent the phone off hook signal of FXS mouth, 3. the phone of 2. representing the FXS mouth represents the type that required foundation is called out by the hooking signal that hooking produces, and 6. represents the relay switch control signal, 7. represents the phone on-hook signal of FXS mouth.
Type of call determining unit 610 and relay switch control unit 620 link to each other with FXS mouth on the relay voice gateway 110, the off hook signal that is used to accept FXS mouth 111 1. triggering and begin to detect on this FXS mouth 111 the hooking signal 2., and by whether detect the hooking signal 2. and the type that the required foundation of corresponding definite this of user off-hook is called out 3..Such as, if after off hook signal, directly detect the called number input, think that then the calling of the required foundation of this of user off-hook is the IP network Internal call; If after off hook signal, detect the hooking signal earlier, just detect called number input then, think that then the calling of the required foundation of this of user off-hook is the calling from the IP network to PSTN, correspondingly need this calling is gone out to connect pstn telephone from relaying mouth route.
3. and the closure/disconnection of corresponding control relay switch 115 relay switch control unit 620 and type of call determining unit 610 link to each other with relay switch 115 on the relay voice gateway 110, are used for the type of calling out according to the required foundation that type of call determining unit 610 is determined.Wherein relay switch 115 is installed on FXS mouth 111 and the relay voice gateway 110 between the relaying mouth 112 that connects PSTN 120, and the relay voice gateway 110 that this relay switch 115 is installed has the power-off survival function usually.
After type of call determining unit 610 determines that the calling of required foundation is callings from the IP network to PSTN, relay switch control unit 620 will determine that 3. exporting the corresponding relays switch controlling signal 6. arrives relay switch 115 according to the type, allow relay switch 115 enter closure state, also promptly be communicated with FXS mouth 111 and relaying mouth 112, thereby make that detected called number can send to PSTN side 120 via relaying mouth 112 on the FXS mouth 111.
By above-mentioned introduction as can be known, identification shown in Figure 6 can be used to support aforementioned identification shown in Figure 4 and the realization of setting up method the 3rd embodiment that calls out from the IP network to PSTN with the device 600 of setting up calling from the IP network to PSTN.And as previously mentioned, based on the consideration of system robustness, relay switch control unit 620 also needs after corresponding call setup from the IP network to PSTN is finished relay switch 115 to be returned to normal condition.With reference to Fig. 6 particularly, after the phone on-hook that detects FXS mouth 111,7. relay switch control unit 620 will be exported the corresponding relays switch controlling signal according to this phone on-hook signal and 6. arrive relay switch 115, allow relay switch 115 enter off-state, also promptly cut off being connected of FXS mouth 111 and relaying mouth 112.
Similar with method the 3rd embodiment shown in Figure 4, device second embodiment shown in Figure 6 is fit to be applied on the equipment that possesses the power-off survival function very much, and changes dialing custom and have very high practicality owing to need not to increase additional hardware and need not the user.
Need to prove that the frame of broken lines demarcation of the device 600 that identification and foundation are called out in Fig. 6 so is not to be used to limit the present invention only for illustrating from the IP network to PSTN.Such as; those skilled in the art are understanding on the basis of the principle of the invention; can on the equipment that does not have the power-off survival function, specifically implement the present invention fully, and this embodiment is in still within the scope of patent protection of the present invention by increasing relay switch 115, type of call determining unit 610 and relay switch control unit 620.
What need statement is that foregoing invention content and embodiment are intended to prove the practical application of technical scheme provided by the present invention, should not be construed as the qualification to protection range of the present invention.Those skilled in the art are in spirit of the present invention and principle, when doing various modifications, being equal to and replacing or improve.Protection scope of the present invention is as the criterion with appended claims.

Claims (7)

  1. An identification with set up the method for from the IP network to PSTN, calling out, be applied on the relay voice gateway in the IP network; It is characterized in that, begin to detect user's input after detecting the off hook signal of a certain FXS mouth on the described relay voice gateway, if detect that described user is input as the hooking signal that hooking produces then the calling of determining required foundation is the calling from the IP network to PSTN, and set up described calling.
  2. 2. the method for claim 1, it is characterized in that, after the calling of determining required foundation is calling from the IP network to PSTN, control the relaying mouth off-hook that connects PSTN on the described relay voice gateway, and detected called number sent to the PSTN side via described relaying mouth, to set up described calling from the IP network to PSTN.
  3. 3. the method for claim 1, it is characterized in that, after the calling of determining required foundation is calling from the IP network to PSTN, the closed relaying mouth of PSTN and the relay switch between the described FXS mouth of connecting, and detected called number sent to the PSTN side via described relaying mouth, to set up described calling from the IP network to PSTN.
  4. 4. method as claimed in claim 3 is characterized in that, after described call setup from the IP network to PSTN, if detect the phone on-hook of described FXS mouth, then disconnects the relay switch between described relaying mouth and the described FXS mouth.
  5. An identification with set up the device of from the IP network to PSTN, calling out, be applied on the relay voice gateway in the IP network; It is characterized in that comprising:
    The type of call determining unit, link to each other with FXS mouth on the described relay voice gateway, the calling that the triggering and beginning that is used to accept the off hook signal of described FXS mouth detects the hooking signal of described FXS mouth and determine required foundation when detecting described hooking signal is the calling from the IP network to PSTN;
    Relaying mouth off-hook control unit, link to each other with the relaying mouth that is connected PSTN on described type of call determining unit and the described relay voice gateway, be used for determining the described relaying mouth off-hook of control after the calling of required foundation is calling from the IP network to PSTN in described type of call determining unit; Perhaps, described relaying mouth off-hook control unit links to each other with described type of call determining unit, described relaying mouth and described FXS mouth, be used for determining that in described type of call determining unit the calling of required foundation is after calling from the IP network to PSTN and described FXS mouth receive called number, to control described relaying mouth off-hook.
  6. An identification with set up the device of from the IP network to PSTN, calling out, be applied on the relay voice gateway in the IP network; It is characterized in that comprising:
    The type of call determining unit, link to each other with FXS mouth on the described relay voice gateway, the calling that the triggering and beginning that is used to accept the off hook signal of described FXS mouth detects the hooking signal of described FXS mouth and determine required foundation when detecting described hooking signal is the calling from the IP network to PSTN;
    The relay switch control unit, described relay switch control unit links to each other with described type of call determining unit with relay switch, be used for determining closed described relay switch after the calling of required foundation is calling from the IP network to PSTN in described type of call determining unit, wherein said relay switch is installed between the relaying mouth that connects PSTN on described FXS mouth and the described relay voice gateway.
  7. 7. device as claimed in claim 6 is characterized in that, described relay switch control unit also links to each other with described FXS mouth, be used to accept described FXS mouth the phone on-hook signal triggering and disconnect described relay switch.
CN2007101435142A 2007-08-08 2007-08-08 Method and correlation device for identifying and setting call from IP network to PSTN Expired - Fee Related CN101090378B (en)

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CN102075649B (en) * 2010-12-02 2016-05-18 大连天亿软件有限公司 The immediate method of VOIP a kind of
CN103188363B (en) * 2011-12-31 2016-08-10 北京大唐高鸿数据网络技术有限公司 The PSTN power-off survival system of IP phone
CN106656771B (en) * 2016-11-07 2019-07-09 苏州工业园区服务外包职业学院 A kind of method that accessing gateway equipment and inside it loopback realize basic call

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