CN104684103B - For establishing the methods, devices and systems for the communication connection that direct transfers - Google Patents
For establishing the methods, devices and systems for the communication connection that direct transfers Download PDFInfo
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- CN104684103B CN104684103B CN201310618182.4A CN201310618182A CN104684103B CN 104684103 B CN104684103 B CN 104684103B CN 201310618182 A CN201310618182 A CN 201310618182A CN 104684103 B CN104684103 B CN 104684103B
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- 238000004891 communication Methods 0.000 title claims abstract description 254
- 238000012546 transfer Methods 0.000 title claims abstract description 224
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 59
- 238000013475 authorization Methods 0.000 claims abstract description 26
- 230000004044 response Effects 0.000 claims abstract description 20
- 238000000605 extraction Methods 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention discloses a kind of for establishing the methods, devices and systems for the communication connection that direct transfers.Wherein for establishing in the method for direct transferring communication connection, direct transfer with called terminal foundation communicate to connect when, direct transfer communication connection calling to called terminal transmission；When receive called terminal transmission response message when, judge called terminal whether on-hook；Wherein called terminal is judging calling service number for authorization number, then replys the communication connection calling that direct transfers, the communication connection calling that will direct transfer is hung up, and sends connection request to VPDN platform；If called terminal on-hook, connection request is sent to VPDN platform, VPDN platform establishes the communication connection that direct transfers when receiving the connection request that calling terminal and called terminal are sent between calling terminal and called terminal.The packet domain VPDN connection that distant terminal is activated by circuit domain call improves user experience without realizing that bidirectional wireless data direct transfers communication in the case where being modified to existing network framework.
Description
Technical field
It is the present invention relates to the communications field, in particular to a kind of for establishing the methods, devices and systems for the communication connection that direct transfers.
Background technique
Since subnetwork does not support visual telephone service, how to establish video communication using packet field network has not
With implementation, common communication pattern needs the terminal of communicating pair to keep the normal connection of packet domain, in business
Stability, resource utilization and secure private are often not satisfactory, affect the popularization and use of business.
Summary of the invention
The embodiment of the present invention provides a kind of for establishing the methods, devices and systems for the communication connection that direct transfers.Pass through circuit domain
Call the packet domain VPDN(Virtual Private Dial-up Network to activate distant terminal, virtual private dialup
Net) connection, realize that bidirectional wireless data direct transfers communication.This method can be applied to CDMA2000(Code Division
Multiple Access2000, CDMA 2000), WCDMA(Wideband Code Division Multiple
Access, wideband code division multiple access), TD-SCDMA(Time Division-Synchronous Code Division
Multiple Access, TD SDMA) and WiFi(Wireless Fidelity, Wireless Fidelity) network.
According to an aspect of the present invention, a kind of method for establishing the communication connection that direct transfers is provided, comprising:
With called terminal foundation direct transfer communicate to connect when, to called terminal transmission direct transfer communication connection calling；
When receive called terminal transmission response message when, judge called terminal whether on-hook；Wherein called terminal exists
Receive direct transfer communication connection calling when, judgement direct transfer communication connection calling in include calling service number whether be grant number
Code replys the communication connection calling that direct transfers, then by the communication connection that direct transfers if calling service number is authorization number
Calling is hung up, and sends the second connection request for establishing the communication connection that direct transfers with calling terminal to VPDN platform；
If called terminal on-hook, send to VPDN platform for direct transferring the first of communication connection with called terminal foundation
Connection request establishes the communication connection that direct transfers will pass through VPDN platform and called terminal, and wherein VPDN platform is receiving caller
When the second connection request that the first connection request and called terminal that terminal is sent are sent, between calling terminal and called terminal
Foundation direct transfers communication connection.
Preferably, the first connection request includes the VPDN fixed ip address of called terminal.
According to another aspect of the present invention, a kind of method for establishing the communication connection that direct transfers is provided, comprising:
When the communication connection that direct transfers for receiving calling terminal transmission calls, master is extracted from the communication connection calling that direct transfers
It is service number；Wherein calling terminal direct transfer with called terminal foundation communicate to connect when, the communication connection that direct transfers described in transmission is exhaled
It cries；
Judge whether calling service number is authorization number；
If calling service number is authorization number, reply the communication connection calling that direct transfers, then by it is described direct transfer it is logical
Letter connection calling is hung up；
The second connection request for establishing the communication connection that direct transfers with calling terminal is sent to VPDN platform, will pass through
VPDN platform and calling terminal establish the communication connection that direct transfers；Wherein when calling terminal receives response message and judges called whole
On-hook is held, sends the first connection request for establishing the communication connection that direct transfers with called terminal, VPDN platform to VPDN platform
Receive calling terminal transmission the first connection request and called terminal send the second connection request when, calling terminal with
The communication connection that direct transfers is established between called terminal.
Preferably, when the communication connection that direct transfers for receiving calling terminal transmission calls, further includes:
Whether judgement currently has built up the communication connection that direct transfers；
If direct transferring communication connection currently without foundation, executes and extract calling service number from the communication connection calling that direct transfers
The step of code.
Preferably, if currently having built up the communication connection that direct transfers, refusal, which direct transfers, communicates to connect calling.
Preferably, the second connection request includes the VPDN fixed ip address of calling terminal.
According to another aspect of the present invention, it provides a kind of for establishing the calling terminal for the communication connection that direct transfers, including first
Communication unit, the first recognition unit and the second communication unit, in which:
First communication unit, direct transfer with called terminal foundation communicate to connect when, direct transfer communication link to called terminal transmission
Connect calling；
First recognition unit judges quilt when for receiving the response message of called terminal transmission when the first communication unit
Cry terminal whether on-hook；Wherein called terminal receive direct transfer communication connection calling when, judgement direct transfer communication connection calling in
Including calling service number whether be authorization number, if calling service number is authorization number, reply the communication that direct transfers
The communication connection calling that direct transfers is hung up in connection calling, and logical for direct transferring with calling terminal foundation to the transmission of VPDN platform
Believe the second connection request of connection；
Second communication unit, for the judging result according to the first recognition unit, if called terminal on-hook, to VPDN
Platform sends the first connection request for establishing the communication connection that direct transfers with called terminal, will pass through VPDN platform and be called eventually
The communication connection that direct transfers is established at end, and wherein VPDN platform is in the first connection request and called terminal hair for receiving calling terminal transmission
When the second connection request sent, the communication connection that direct transfers is established between calling terminal and called terminal.
Preferably, the first connection request includes the VPDN fixed ip address of called terminal.
According to another aspect of the present invention, it provides a kind of for establishing the called terminal for the communication connection that direct transfers, including third
Communication unit, extraction unit, the second recognition unit and fourth communication unit, in which:
Third communication unit, for receive calling terminal transmission direct transfer communication connection calling, wherein calling terminal with
Called terminal foundation direct transfers when communicating to connect, and direct transfer communication connection calling described in transmission；According to the instruction of the second recognition unit, answer
The communication connection that direct transfers described in answering calls, hangs up the communication connection calling that direct transfers, and indicates fourth communication unit to VPDN platform
Send the second connection request for establishing the communication connection that direct transfers with calling terminal；
Extraction unit, when the communication connection that direct transfers for receiving calling terminal transmission when third communication unit calls, from
The communication connection that direct transfers extracts calling service number in calling；
Second recognition unit, for judging whether calling service number is authorization number, if calling service number is authorization
Number, then indicating to direct transfer described in third communication unit response communicates to connect calling, hangs up the communication connection calling that direct transfers；
Fourth communication unit sends the second connection request to VPDN platform for the instruction according to third communication unit, with
It will pass through VPDN platform and calling terminal establish the communication connection that direct transfers；Wherein when calling terminal receives response message and judges
Called terminal on-hook, the first connection request that the communication connection that direct transfers is established with called terminal is sent to VPDN platform, and VPDN is flat
Platform is in the second connection request that the first connection request and called terminal for receiving calling terminal transmission are sent, in calling terminal
The communication connection that direct transfers is established with called terminal.
Preferably, called terminal further includes third recognition unit, in which:
Third recognition unit, for receiving the communication connection calling that direct transfers of calling terminal transmission when third communication unit
When, whether judgement currently has built up the communication connection that direct transfers, if direct transferring communication connection currently without foundation, indicates extraction unit
Execute the operation that calling service number is extracted from the communication connection calling that direct transfers.
Preferably, third recognition unit be also used to currently have built up direct transfer communicate to connect when, refusal direct transfers communication link
Connect calling.
Preferably, the second connection request includes the VPDN fixed ip address of calling terminal.
According to another aspect of the present invention, a kind of system for establishing the communication connection that direct transfers is provided, including calling terminal,
Called terminal and VPDN platform, in which:
Calling terminal is the calling terminal that any of the above-described embodiment is related to；
Called terminal is the called terminal that any of the above-described embodiment is related to；
VPDN platform, for receive calling terminal transmission for establishing the of the communication connection that direct transfers with called terminal
When the second connection request for the communication connection that direct transfers with calling terminal foundation that one connection request and called terminal are sent,
The communication connection that direct transfers is established between calling terminal and called terminal.
The present invention activates the packet domain VPDN connection of distant terminal by circuit domain call, without to existing network frame
Structure realizes that bidirectional wireless data direct transfers communication in the case where being modified, and improves user experience.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of the method one embodiment of the present invention for establishing the communication connection that direct transfers.
Fig. 2 is the schematic diagram of method another embodiment of the present invention for establishing the communication connection that direct transfers.
Fig. 3 is the schematic diagram of the calling terminal one embodiment of the present invention for establishing the communication connection that direct transfers.
Fig. 4 is the schematic diagram of the called terminal one embodiment of the present invention for establishing the communication connection that direct transfers.
Fig. 5 is the schematic diagram of called terminal another embodiment of the present invention for establishing the communication connection that direct transfers.
Fig. 6 is the schematic diagram of the system one embodiment of the present invention for establishing the communication connection that direct transfers.
Fig. 7 direct transfers for present invention foundation and communicates to connect the schematic diagram of one embodiment.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is the schematic diagram of the method one embodiment of the present invention for establishing the communication connection that direct transfers.As shown in Figure 1, this
The method and step of embodiment can be executed by calling terminal.
Step 101, direct transfer with called terminal foundation communicate to connect when, exhaled to the called terminal transmission communication connection that direct transfers
It cries.
Step 102, when receive called terminal transmission response message when, judge called terminal whether on-hook.
Wherein called terminal receive direct transfer communication connection calling when, judgement direct transfer communication connection calling in include master
Cry whether service number is authorization number, if calling service number is authorization number, reply the communication connection calling that direct transfers,
Then the communication connection calling that direct transfers is hung up, and sent to VPDN platform for establishing the communication connection that direct transfers with calling terminal
The second connection request.
Step 103, it if called terminal on-hook, sends to VPDN platform for establishing the communication link that direct transfers with called terminal
The first connection request connect establishes the communication connection that direct transfers will pass through VPDN platform and called terminal.
Wherein the second company that VPDN platform is sent in the first connection request and called terminal for receiving calling terminal transmission
When connecing request, the communication connection that direct transfers is established between calling terminal and called terminal.
Based on the above embodiment of the present invention provide the method for establishing the communication connection that direct transfers, by circuit domain call come
The packet domain VPDN connection for activating distant terminal, without realizing double-direction radio in the case where being modified to existing network framework
Data direct transfer communication, improve user experience.
Preferably, the first connection request includes the VPDN fixed ip address of called terminal.
Fig. 2 is the schematic diagram of method another embodiment of the present invention for establishing the communication connection that direct transfers.Preferably, this implementation
The method and step of example can be executed by called terminal.
Step 201, when the communication connection that direct transfers for receiving calling terminal transmission calls, from the communication connection calling that direct transfers
Extract calling service number.
Wherein calling terminal direct transfer with called terminal foundation communicate to connect when, direct transfer described in transmission communication connection calling.
Step 202, judge whether calling service number is authorization number.
Step 203, if calling service number is authorization number, the communication connection calling that direct transfers is replied, then by institute
The communication connection calling that direct transfers is stated to hang up.
If calling service number is not authorization number, refusal, which direct transfers, communicates to connect calling.
Step 204, the second connection request for establishing the communication connection that direct transfers with calling terminal is sent to VPDN platform, with
It will pass through VPDN platform and calling terminal establish the communication connection that direct transfers.
Wherein when calling terminal receives response message and judges called terminal on-hook, it is used for the transmission of VPDN platform
The first connection request of the communication connection that direct transfers is established with called terminal, VPDN platform connects in receive calling terminal transmission first
When connecing the second connection request that request and called terminal are sent, the communication link that direct transfers is established between calling terminal and called terminal
It connects.
Based on the above embodiment of the present invention provide the method for establishing the communication connection that direct transfers, by circuit domain call come
The packet domain VPDN connection for activating distant terminal, without realizing double-direction radio in the case where being modified to existing network framework
Data direct transfer communication, improve user experience.
Advantage, the second connection request includes the VPDN fixed ip address of calling terminal.
Preferably, it in above-mentioned steps 201, when the communication connection that direct transfers for receiving calling terminal transmission calls, also wraps
It includes:
Whether judgement currently has built up the communication connection that direct transfers, if direct transferring communication connection currently without foundation, execution from
It direct transfers and communicates to connect the step of extracting calling service number in calling.If currently having built up the communication connection that direct transfers, refuse
Direct transfer communication connection calling.
That is, called terminal only it is no foundation direct transfer communicate to connect when, just will do it subsequent processing, otherwise refuse this and direct transfer
Communication connection calling.
Fig. 3 is the schematic diagram of the calling terminal one embodiment of the present invention for establishing the communication connection that direct transfers.Such as Fig. 3 institute
Show, calling terminal includes the first communication unit 301, the first recognition unit 302 and the second communication unit 303.Wherein:
First communication unit 301, direct transfer with called terminal foundation communicate to connect when, direct transfer communication to called terminal transmission
Connection calling.
First recognition unit 302, when for receiving the response message of called terminal transmission when the first communication unit 301,
Judge called terminal whether on-hook.
Wherein called terminal receive direct transfer communication connection calling when, judgement direct transfer communication connection calling in include master
Cry whether service number is authorization number, if calling service number is authorization number, reply the communication connection calling that direct transfers,
The communication connection calling that direct transfers is hung up, and sends for establishing the communication connection that direct transfers with calling terminal to VPDN platform
Two connection requests.
Second communication unit 303, for the judging result according to the first recognition unit 302, if called terminal on-hook,
Send to VPDN platform for establishing the first connection request of communication connection of direct transferring with called terminal, with will pass through VPDN platform with
Called terminal establishes the communication connection that direct transfers.
Wherein the second company that VPDN platform is sent in the first connection request and called terminal for receiving calling terminal transmission
When connecing request, the communication connection that direct transfers is established between calling terminal and called terminal.
Based on the calling terminal that the above embodiment of the present invention provides, the grouping of distant terminal is activated by circuit domain call
Domain VPDN connection, without realizing that bidirectional wireless data direct transfers communication in the case where being modified to existing network framework, raising
User experience.
Preferably, the first connection request includes the VPDN fixed ip address of called terminal.
Fig. 4 is the schematic diagram of the called terminal one embodiment of the present invention for establishing the communication connection that direct transfers.Such as Fig. 4 institute
Show, called terminal includes third communication unit 401, extraction unit 402, the second recognition unit 403 and fourth communication unit 404.
Wherein:
Third communication unit 401, for receiving the communication connection calling that direct transfers of calling terminal transmission, wherein calling terminal exists
It is direct transferred when communicating to connect with called terminal foundation, direct transfer described in transmission communication connection calling；According to the finger of the second recognition unit 403
Show, direct transfer described in response communication connection calling, by it is described direct transfer communication connection calling hang up, instruction fourth communication unit 404 to
VPDN platform sends the second connection request for establishing the communication connection that direct transfers with calling terminal.
Extraction unit 402, for receiving the communication connection calling that direct transfers of calling terminal transmission when third communication unit 401
When, calling service number is extracted from the communication connection calling that direct transfers.
Second recognition unit 403, for judging whether calling service number is authorization number, if calling service number is to award
Number is weighed, then indicating to direct transfer described in 401 response of third communication unit communicates to connect calling, hangs the communication connection calling that direct transfers
It is disconnected.
Fourth communication unit 404 sends the second connection to VPDN platform for the instruction according to third communication unit 401
Request establishes the communication connection that direct transfers will pass through VPDN platform and calling terminal.
Wherein when calling terminal receives response message and judges called terminal on-hook, to the transmission of VPDN platform and quilt
The first connection request for making terminal establish the communication connection that direct transfers, VPDN platform are asked in the first connection for receiving calling terminal transmission
When the second connection request that called terminal of summing is sent, the communication connection that direct transfers is established in calling terminal and called terminal.
Based on the called terminal that the above embodiment of the present invention provides, the grouping of distant terminal is activated by circuit domain call
Domain VPDN connection, without realizing that bidirectional wireless data direct transfers communication in the case where being modified to existing network framework, raising
User experience.
Preferably, the second connection request includes the VPDN fixed ip address of calling terminal.
Fig. 5 is the schematic diagram of called terminal another embodiment of the present invention for establishing the communication connection that direct transfers.With shown in Fig. 4
Embodiment is compared, and in the embodiment shown in fig. 5, called terminal further includes third recognition unit 501.Wherein:
Third recognition unit 501, for receiving the communication connection that direct transfers of calling terminal transmission when third communication unit 401
When calling, whether judgement currently has built up the communication connection that direct transfers, if direct transferring communication connection currently without foundation, indicates to extract
Unit 402 executes the operation that calling service number is extracted from the communication connection calling that direct transfers.
Preferably, third recognition unit 501 be also used to currently have built up direct transfer communicate to connect when, refusal direct transfers communication
Connection calling.
Fig. 6 is the schematic diagram of the system one embodiment of the present invention for establishing the communication connection that direct transfers.As shown in fig. 6, should
System includes calling terminal 601, called terminal 602 and VPDN platform 603.Wherein:
Calling terminal 601 is the calling terminal that any embodiment is related in Fig. 3.
Called terminal 602 is the called terminal that any embodiment is related in Fig. 4 or Fig. 5.
VPDN platform 603, for receive the transmission of calling terminal 601 for direct transferring communication link with called terminal foundation
What the first connection request and called terminal 602 that connect were sent the second of communication connection connect for direct transferring with calling terminal foundation
When request, the communication connection that direct transfers is established between calling terminal and called terminal.
Based on the system that the above embodiment of the present invention provides, the packet domain of distant terminal is activated by circuit domain call
VPDN connection is improved without realizing that bidirectional wireless data direct transfers communication in the case where being modified to existing network framework
User experience.
For brevity, two terminals are only gived in Fig. 6, those skilled in the art are it will be appreciated that can be with
There are multiple terminals to connect with VPDN platform.
Below by Fig. 7 specific example, present invention is described.
Step 701, calling terminal direct transfer with called terminal foundation communicate to connect when, direct transfer communication to called terminal transmission
Connection calling.
Step 702, when called terminal receive calling terminal transmission direct transfer communication connection calling when, judgement it is current whether
Have built up the communication connection that direct transfers.
Step 703, if direct transferring communication connection currently without foundation, called terminal is extracted from the communication connection calling that direct transfers
Calling service number out.
Correspondingly, if currently having built up the communication connection that direct transfers, refusal, which direct transfers, communicates to connect calling.
Step 704, called terminal judges whether calling service number is authorization number.
Step 705, if calling service number is authorization number, direct transfer communication connection calling described in called terminal response.
Step 706, called terminal hangs up the communication connection calling that direct transfers.
Step 707, called terminal sends to VPDN platform and connects for establishing the second of the communication connection that direct transfers with calling terminal
Connect request.
Step 708, when calling terminal receives response message and judges called terminal on-hook, to the transmission of VPDN platform
For establishing the first connection request of the communication connection that direct transfers with called terminal.
Step 709, VPDN platform sent in the first connection request and called terminal for receiving calling terminal transmission the
When two connection requests, the communication connection that direct transfers is established between calling terminal and called terminal.
At this point, calling terminal and called terminal enter the two-way communication connection patterns that direct transfer, transmission services data can be started.
By applying the present invention, activate the packet domain VPDN connection of distant terminal by circuit domain call, without pair
Existing network framework realizes that bidirectional wireless data direct transfers communication in the case where being modified, and improves user experience.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
Description of the invention is given for the purpose of illustration and description, and is not exhaustively or will be of the invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those skilled in the art is enable to manage
The solution present invention is to design various embodiments suitable for specific applications with various modifications.
Claims (13)
1. a kind of method for establishing the communication connection that direct transfers characterized by comprising
With called terminal foundation direct transfer communicate to connect when, to called terminal transmission direct transfer communication connection calling；
When receive called terminal transmission response message when, judge called terminal whether on-hook；Wherein called terminal is receiving
To direct transfer communication connection calling when, judgement direct transfer communication connection calling in include calling service number whether be authorization number,
If calling service number is authorization number, the communication connection calling that direct transfers is replied, then exhales the communication connection that direct transfers
It cries and hangs up, and send the second connection request for establishing the communication connection that direct transfers with calling terminal to VPDN platform；
If called terminal on-hook, sends to VPDN platform and the first of communication connection connect for direct transferring with called terminal foundation
Request establishes the communication connection that direct transfers will pass through VPDN platform and called terminal, and wherein VPDN platform is receiving calling terminal
When the second connection request that the first connection request and called terminal sent is sent, established between calling terminal and called terminal
Direct transfer communication connection, and calling terminal and called terminal enter the two-way communication connection patterns that direct transfer, and starts transmission services data.
2. the method according to claim 1, wherein
First connection request includes the VPDN fixed ip address of called terminal.
3. a kind of method for establishing the communication connection that direct transfers characterized by comprising
When the communication connection that direct transfers for receiving calling terminal transmission calls, caller industry is extracted from the communication connection calling that direct transfers
Business number；Wherein calling terminal direct transfer with called terminal foundation communicate to connect when, direct transfer described in transmission communication connection calling；
Judge whether calling service number is authorization number；
If calling service number is authorization number, the communication connection calling that direct transfers is replied, then by the communication link that direct transfers
Calling is connect to hang up；
The second connection request for establishing the communication connection that direct transfers with calling terminal is sent to VPDN platform, it is flat will pass through VPDN
Platform and calling terminal establish the communication connection that direct transfers；Wherein when calling terminal receives response message and judges that called terminal has been hung
Machine sends the first connection request for establishing the communication connection that direct transfers with called terminal to VPDN platform, and VPDN platform is receiving
When the second connection request that the first connection request and called terminal sent to calling terminal is sent, in calling terminal and it is called eventually
The communication connection that direct transfers is established between end, calling terminal and called terminal enter the two-way communication connection patterns that direct transfer, and start to transmit industry
Business data.
4. according to the method described in claim 3, it is characterized in that,
When the communication connection that direct transfers for receiving calling terminal transmission calls, further includes:
Whether judgement currently has built up the communication connection that direct transfers；
If direct transferring communication connection currently without foundation, executes and extract calling service number from the communication connection calling that direct transfers
Step.
5. according to the method described in claim 4, it is characterized in that,
If currently having built up the communication connection that direct transfers, refusal, which direct transfers, communicates to connect calling.
6. the method according to any one of claim 3-5, which is characterized in that
Second connection request includes the VPDN fixed ip address of calling terminal.
7. a kind of for establishing the calling terminal for the communication connection that direct transfers, which is characterized in that including the first communication unit, the first identification
Unit and the second communication unit, in which:
First communication unit, direct transfer with called terminal foundation communicate to connect when, exhaled to the called terminal transmission communication connection that direct transfers
It cries；
First recognition unit when for receiving the response message of called terminal transmission when the first communication unit, judges called whole
End whether on-hook；Wherein called terminal receive direct transfer communication connection calling when, judgement direct transfer communication connection calling in includes
Calling service number whether be authorization number, if calling service number is authorization number, reply the communication connection that direct transfers
The communication connection calling that direct transfers is hung up, and sent to VPDN platform for establishing the communication link that direct transfers with calling terminal by calling
The second connection request connect；
Second communication unit, for the judging result according to the first recognition unit, if called terminal on-hook, to VPDN platform
The first connection request for establishing the communication connection that direct transfers with called terminal being sent, being built with will pass through VPDN platform with called terminal
The vertical communication connection that direct transfers, wherein VPDN platform is sent in the first connection request and called terminal for receiving calling terminal transmission
When the second connection request, foundation, which direct transfers, between calling terminal and called terminal communicates to connect calling terminal and called terminal entrance
The two-way communication connection patterns that direct transfer start transmission services data.
8. calling terminal according to claim 7, which is characterized in that
First connection request includes the VPDN fixed ip address of called terminal.
9. a kind of for establishing the called terminal for the communication connection that direct transfers, which is characterized in that including third communication unit, extract list
Member, the second recognition unit and fourth communication unit, in which:
Third communication unit, for receiving the communication connection calling that direct transfers of calling terminal transmission, wherein calling terminal with it is called
Terminal foundation direct transfers when communicating to connect, and direct transfer communication connection calling described in transmission；According to the instruction of the second recognition unit, response institute
It states the communication connection calling that direct transfers, hang up the communication connection calling that direct transfers, instruction fourth communication unit is sent to VPDN platform
For establishing the second connection request of the communication connection that direct transfers with calling terminal；
Extraction unit, for when third communication unit receive calling terminal transmission direct transfer communication connection calling when, from direct transferring
Calling service number is extracted in communication connection calling；
Second recognition unit, for judging whether calling service number is authorization number, if calling service number is authorization number,
It then indicates to direct transfer described in third communication unit response and communicates to connect calling, hangs up the communication connection calling that direct transfers；
Fourth communication unit sends the second connection request to VPDN platform, to lead to for the instruction according to third communication unit
It crosses VPDN platform and calling terminal establishes the communication connection that direct transfers；Wherein when calling terminal receives response message and judges called
Terminal on-hook, the first connection request that the communication connection that direct transfers is established with called terminal is sent to VPDN platform, and VPDN platform exists
When the second connection request that the first connection request and called terminal for receiving calling terminal transmission are sent, in calling terminal and quilt
It makes terminal foundation direct transfer and communicates to connect calling terminal and called terminal into the two-way communication connection patterns that direct transfer, start transmission services
Data.
10. called terminal according to claim 9, which is characterized in that further include third recognition unit, in which:
Third recognition unit is sentenced when the communication connection that direct transfers for receiving calling terminal transmission when third communication unit calls
It is disconnected currently whether to have built up the communication connection that direct transfers, if direct transferring communication connection currently without foundation, indicate extraction unit execution
The operation of calling service number is extracted from the communication connection calling that direct transfers.
11. called terminal according to claim 10, which is characterized in that
Third recognition unit be also used to currently have built up direct transfer communicate to connect when, refusal direct transfer communication connection calling.
12. the called terminal according to any one of claim 9-11, which is characterized in that
Second connection request includes the VPDN fixed ip address of calling terminal.
13. a kind of system for establishing the communication connection that direct transfers, which is characterized in that including calling terminal, called terminal and VPDN
Platform, in which:
Calling terminal is the calling terminal that claim 7 or 8 is related to；
Called terminal is the called terminal that any one of claim 9-12 is related to；
VPDN platform, for receiving connecting for establishing the first of the communication connection that direct transfers with called terminal for calling terminal transmission
Request and when being used to establish the second connection request of the communication connection that direct transfers with calling terminal of called terminal transmission are connect, in caller
The communication connection that direct transfers is established between terminal and called terminal.
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