CN101489084B - Visual telephone physical layer channel simulation method and apparatus - Google Patents
Visual telephone physical layer channel simulation method and apparatus Download PDFInfo
- Publication number
- CN101489084B CN101489084B CN2008100327291A CN200810032729A CN101489084B CN 101489084 B CN101489084 B CN 101489084B CN 2008100327291 A CN2008100327291 A CN 2008100327291A CN 200810032729 A CN200810032729 A CN 200810032729A CN 101489084 B CN101489084 B CN 101489084B
- Authority
- CN
- China
- Prior art keywords
- physical layer
- layer channel
- communication
- search
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000000007 visual effect Effects 0.000 title claims description 34
- 238000004088 simulation Methods 0.000 title description 5
- 230000006854 communication Effects 0.000 claims abstract description 108
- 238000004891 communication Methods 0.000 claims abstract description 104
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 230000004044 response Effects 0.000 claims description 17
- 238000011161 development Methods 0.000 abstract description 11
- 230000018109 developmental process Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000012827 research and development Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
Abstract
The invention discloses an analogue method of a videophone physical layer channel comprising: using a communication mode supporting a point-to-point communication, establishing the physical layer channel between a calling and a called; collocating a data transmission speed of the physical layer channel, enabling the band-width of the physical layer channel to accord with the demand of the videophone communication. The invention also discloses an analogue device of the videophone physical layer channel. The invention can simulate the videophone physical layer channel without using a real 3G network, and expedites the development of the videophone.
Description
Technical field
The present invention relates to the video telephone field, particularly a kind of analogy method of visual telephone physical layer channel and device.
Background technology
Along with 3G (Third Generation) Moblie (3G, 3
RdGeneration) networks development; Mobile phone has stepped into the essence application stage; Meanwhile, more and more favored, for example video sharing (Video Sharing) and video telephone (Video Telephone) etc. with the closely-related application of 3G; Wherein video telephone is as 3G and second generation mobile communication (2G, 2
NdGeneration) main distinction technology has begun to get into operational phase, and each terminal development producer and service provider begin to be devoted to the research of video telephony applications for this reason.
Fig. 1 is the application architecture sketch map of video telephone in form Mobile operating system (Windows Mobile OperationSystem); In this operating system, comprise: use associated component, system interface phone application programming interface (TAPI; Telephone Application ProgrammingInterface), radio frequency boundary layer (RIL, Radio Interface Layer), base band (Baseband) unit and 3G-324M protocol stack (Stack).
Base Band Unit shown in Figure 1 is used for connecting is actually responsible for the 3G Wireless Telecom Equipment, and this equipment of being actually responsible for the 3G radio communication just is meant modulator-demodulator (Modem) usually; TAPI is the middle layer software module for making things convenient for the upper strata exploitation to provide; The function of its realization is to send order through RIL to Modem; Or receive the response content that Modem passes back through RIL; Be equivalent to directly call Modem application programming interface (API, Application Programming Interface); RIL is abstract intermediate layer of coming out to be used to handle AT (Attention) order, mainly is the order that send on the upper strata to be added the AT command header form said AT order, satisfies the virtual concurrent processing requirement of upper strata to the AT order simultaneously; The 3G-324M protocol stack has defined the agreement 3G-324M that video telephone uses, and it is a kind of point-to-point multiple agreement, when the 3G network of reality is used, is operated in the terminal processes of intercommunication; Except that above-mentioned TAPI, RIL, Base Band Unit and 3G-324M protocol stack, other parts in the form Mobile operating system are used to accomplish the relevant function of application layer for using associated component.
Use TAPI, RIL and Base Band Unit shown in Figure 1, can set up the physical layer channel of the necessary 64K bandwidth of video telephone practical communication.Fig. 2 is calling party who uses video telephone and the flow chart that the callee carries out actual conversation; Wherein the calling party identifies with A, and the callee identifies with B, and flow process shown in Figure 2 mainly comprises: calling party A calls RIL through system interface TAPI; Inform that local terminal Modem begins and service provider (SP; Service Provider) server (Server) is set up and is called out, and this service provider server of process and callee B set up the physical layer channel of the 64K bandwidth in circuit switching (CS, Circuit Switch) territory; Utilize the physical layer channel of the 64K bandwidth of setting up, the video telephony applications program of calling party A and callee B will utilize the 3G-324M agreement to shake hands, and after the success of shaking hands, set up video and audio frequency tunnel and carry out actual video telephone communication process.
Can find out from above description; The 3G-324M agreement is operated on the CS territory physical layer channel of the 64K bandwidth of setting up through 3G network; Video telephone utilizes this physical layer channel to carry out practical communication, and the developer could carry out the research and development and the debugging in video telephone communication stage in this practical communication process.At present, the developer sets up above-mentioned physical layer channel by the 3G network of reality, utilizes the physical layer channel of setting up to carry out the research and development and the debugging work in video telephone practical communication stage then, and is not enough below this development mode exists:
The first, must wait for that the hardware terminal that possesses the 3G network function could begin to carry out research and development and the debugging based on the video telephone communication agreement of 3G network after ready, seriously hinders the software and hardware concurrent development;
The second, owing to must on the hardware of actual 3G network, develop, debugging method is limited, causes debugging efficiency very low;
Three, debugging needs to consume a large amount of developing and debugging expenses in the 3G network of reality.
Above-mentioned defective is exactly the development mode of video telephone in the prior art generally speaking, has hindered the development rate of video telephone.
Summary of the invention
The present invention provides a kind of analogy method of visual telephone physical layer channel, and this method need not just can the analogue videophone physical layer channel by the 3G network of reality, has accelerated the exploitation of video telephone.
The present invention provides a kind of analogue means of visual telephone physical layer channel, and this device need not just can the analogue videophone physical layer channel by the 3G network of reality, has accelerated the exploitation of video telephone.
Technical scheme of the present invention is achieved in that
A kind of analogy method of visual telephone physical layer channel, this method comprises:
Use the communication mode of support point point to-point communication, set up the physical layer channel between the calling and called;
Dispose the data transmission rate of said physical layer channel, make the bandwidth of said physical layer channel meet the requirement of video telephone communication; The data transmission rate of the said physical layer channel of said configuration is: the data transmission rate that disposes said physical layer channel is per 20 millisecond of 160 byte, or is the integral multiple of per 20 millisecond of 160 byte.
The communication mode of said support point point to-point communication is the interconnected Socket communication based on TCP/IP of Bluetooth communication, WIFI or two-shipper; The said physical layer channel of setting up between the calling and called is: calledly listen to the search that caller is carried out; Return response to caller, set up physical layer channel.
Preestablish called identify label, the said called search that caller is carried out that listens to is returned response to caller and is: calledly listens to the search signal that caller is sent according to predefined called identify label, return return signal to caller.
A kind of analogue means of visual telephone physical layer channel, this device comprises:
Passage is set up module, is used to use the communication mode of support point point to-point communication, sets up the physical layer channel with Correspondent Node;
Configuration module is used to said passage and sets up the physical layer channel that module is set up, and the configuration data transmission rate makes the bandwidth of said physical layer channel meet the requirement of video telephone communication; Saidly set up the physical layer channel that module is set up for said passage, the configuration data transmission rate is: the data transmission rate that disposes said physical layer channel is per 20 millisecond of 160 byte, or is the integral multiple of per 20 millisecond of 160 byte.
The communication mode of said support point point to-point communication is the interconnected Socket communication based on TCP/IP of Bluetooth communication, WIFI or two-shipper, and said passage is set up module and comprised:
The port snooping unit is used to intercept the search that Correspondent Node carries out;
Feedback unit is used for after said port snooping unit listens to the search that Correspondent Node carries out, returning response to Correspondent Node, sets up physical layer channel.
The search that Correspondent Node carries out is intercepted in said port snooping unit, for intercepting the search signal that Correspondent Node sends according to predefined called identify label; The response that said feedback unit returns to Correspondent Node is the return signal that returns to Correspondent Node.
The communication mode of said support point point to-point communication is the interconnected Socket communication based on TCP/IP of Bluetooth communication, WIFI or two-shipper; Said passage is set up module and is comprised:
Search unit is used to carry out the search to Correspondent Node;
The feedback receiving element is used for after said search unit carries out the search to Correspondent Node, and physical layer channel is set up in the response that the received communication opposite end is returned.
Further comprise the identify label memory cell in this device, be used to store predefined called identify label; Said search unit carries out the search to Correspondent Node, for sending search signal according to said predefined called identify label; The response that said feedback receiving element received communication opposite end is returned, the return signal that returns for Correspondent Node.
It is thus clear that; The analogy method of visual telephone physical layer channel of the present invention and device; Use the communication mode of support point point to-point communication; Set up the physical layer channel between the calling and called,, make the bandwidth of this physical layer channel meet the requirement of video telephone communication then through the data transmission rate of the configuration physical layer channel of setting up.Because the communication mode of support point point to-point communication need not to be operated in actual 3G network, therefore can avoid present video telephone must use the physical layer channel of setting up in the actual 3G network to develop the many disadvantages of debugging, has accelerated the exploitation of video telephone.
Description of drawings
Fig. 1 is the application architecture sketch map of video telephone in the window Mobile operating system in the prior art;
Fig. 2 is for using the calling party of video telephone and the flow chart that the callee carries out actual conversation in the prior art;
Fig. 3 is the analogy method flow chart of visual telephone physical layer channel of the present invention;
Fig. 4 uses bluetooth protocol repertory to replace the principle schematic of 3G communication protocol stack in the serial ports Mobile operating system among the analogy method embodiment of visual telephone physical layer channel of the present invention;
Fig. 5 is the flow chart of the analogy method embodiment of visual telephone physical layer channel of the present invention;
Fig. 6 is the analogue means structural representation of visual telephone physical layer channel of the present invention;
Fig. 7 is the structural representation of analogue means first embodiment of visual telephone physical layer channel of the present invention;
Fig. 8 is the structural representation of analogue means second embodiment of visual telephone physical layer channel of the present invention.
Embodiment
For making objects and advantages of the present invention clearer, the present invention is done further detailed explanation below in conjunction with accompanying drawing and embodiment.
At first introduce the analogy method of visual telephone physical layer channel of the present invention.
Fig. 3 is the analogy method flow chart of visual telephone physical layer channel of the present invention, and this flow process comprises:
Step 301: use the communication mode of support point point to-point communication, set up the physical layer channel between the calling and called.
Step 302: dispose the data transmission rate of said physical layer channel, make the bandwidth of said physical layer channel meet the requirement of video telephone communication.
The analogy method of visual telephone physical layer channel of the present invention; Use the communication mode of support point point to-point communication; Set up the physical layer channel between the calling and called; Through the data transmission rate of the configuration physical layer channel of setting up, make the bandwidth of this physical layer channel meet the requirement of video telephone communication then.Because the communication mode of support point point to-point communication need not to be operated in actual 3G network, therefore can avoid present video telephone must use the physical layer channel of setting up in the actual 3G network to develop the many disadvantages of debugging, has accelerated the exploitation of video telephone.
Though the 3G-324M agreement that video telephone adopts requires to be operated on the physical layer channel of the 64K bandwidth that 3G network sets up; But and do not require how this physical layer channel is set up and through what mode set up; Therefore use the analogy method of visual telephone physical layer channel of the present invention; Use the wireless or wire communication mode of support point point to-point communication; Can simulate the physical layer channel that meets the instructions for use of 3G-324M agreement, thereby avoid and in the 3G network of reality, could set up this physical layer channel.Wireless or the wire communication mode of above-mentioned support point point to-point communication can comprise: wireless compatibility authentication (WIFI, Wireless Fidelity) communication, bluetooth (BlueTooth) communication and serial communication etc.
Be example with the Bluetooth technology below, a specific embodiment of the analogy method of visual telephone physical layer channel of the present invention is described.
Fig. 1 has shown the application architecture of video telephone in the form Mobile operating system in the prior art; TAPI wherein, RIL and Base Band Unit are the major part of setting up physical layer channel; Suppose that Correspondent Node equipment is mobile phone in the present embodiment; When using Bluetooth technology that the data channel of video telephone is simulated, need to use TAPI, RIL and the Base Band Unit in the form Mobile operating system in the bluetooth protocol repertory alternate figures 1, Fig. 4 shows this principle of substitution.Bluetooth protocol repertory as shown in Figure 4 is used (Applications) layer and is supported various operation, the hardware protocol (LMP of intercepting; Link ManagerProtocol) layer is supported in and sets up link between the opposite equip.; Base band (BB, Baseband) layer belongs to physical layer, supports radio frequency (RF; Radio Frequency), accomplish actual Bluetooth wireless communication.Because Bluetooth protocol belongs to those skilled in the art's common practise, no longer describes in detail here.
In the present embodiment, use the Correspondent Node mobile phone of Bluetooth protocol, comprise that for example: search utility, port snooping program, buffer to ports are intercepted program and data transmit-receive program as caller and required various programs when called.Said procedure is accomplished the physical layer channel simulation and is set up each item function in the practical communication process after the physical layer channel, also is required to be each mobile phone and sets unique identify label.The program that when mobile phone starts, just needs to start comprises: port snooping program and buffer to ports are intercepted program.
Fig. 5 is the embodiment flow chart of the analogy method of video telephone of the present invention physical channel, and this flow process comprises:
Step 501: when making a call, the mobile phone of caller starts search utility, according to the identify label of setting, searches for called mobile phone, and the concrete grammar of search is for sending search signal.
Step 502: called mobile phone returns return signal to caller after listening to the search signal of caller transmission.
Step 503: the data transmission rate of configures physical layer passage.A kind of feasible strategy is that the data in each set time section of configuration are sent byte number; For example per 20 milliseconds are sent 160 bytes or per 40 milliseconds of transmission 320 bytes; As long as just be configured to per 20 millisecond of 160 byte or its integral multiple; To set up seamless 64K passage, so just can satisfy of the requirement of 3G-324M agreement with the bandwidth constraints of data channel at 64K to transfer of data.
Through step 501～step 503, utilize Bluetooth protocol to simulate the physical layer channel that meets the video telephone communication requirement.When the physical layer channel that utilizes this simulation carries out the exploitation of video telephone; Need on this physical layer channel, carry out caller and called practical communication; So that realize the research and development debugging to the video telephone communication part, above-mentioned caller and called practical communication process can comprise:
Step 504: the mobile phone of caller utilizes buffer to ports to intercept program, listens to that the log-on data transmitting/receiving program carries out the data transmit-receive action of video telephone behind the Local Data.
Step 505: called mobile phone utilizes buffer to ports to intercept program, listens to that the log-on data transmitting/receiving program carries out the data transmit-receive action of video telephone behind the Local Data.
In the above-mentioned steps 504～step 505; The buffer to ports that caller or called mobile phone start is intercepted program; Except that intercepting the Local Data function, can also in calling and called practical communication repeatedly mutual, intercept the data transmit-receive action of the video telephone of opposite end.For example, the mobile phone of caller can begin the data transmit-receive action of the video telephone of self after the data transmit-receive action that listens to the called video telephone that carries out.
In above-mentioned steps 504～step 505, caller and called when carrying out practical communication can be carried out the developments such as research and development debugging of video telephone communication part.
It is example that above embodiment replaces the 3G communication protocol stack with bluetooth protocol repertory; And the hypothesis opposite equip. is a mobile phone; In fact in the analogy method of visual telephone physical layer channel of the present invention, the analogy method of visual telephone physical layer channel is not restricted to above-mentioned situation of lifting embodiment, this simulation process can be applied to the communication equipment of other support point point to-point communications equally; Also can be with the PC (PC that adopts any interconnection mode; Private Computer) as Correspondent Node, adopt the software on the PC fully, use two-shipper interconnected based on transmission control protocol (TCP; Transmission Control Protocol)/physical layer channel that Internet protocol (IP, Internet Protocol) is simulated above-mentioned introduction sets up process.Therefore; As long as analogy method according to visual telephone physical layer channel provided by the invention; Communication mode in conjunction with the support point point to-point communication; Just can the analogue videophone physical layer channel, and then can complete being transplanted in this analog physical layer passage of exploitation of video telephone communication part be carried out, for the exploitation of video telephone has brought following advantage:
The first, can guarantee the concurrent development of Video Telephone Software and hardware, need not to wait for that the hardware terminal that possesses the 3G communication capacity just begins video telephone communication research and development and debugging partly after ready;
The second, utilize the communication mode of support point point to-point communication to carry out the simulation of visual telephone physical layer channel, can cooperate developing instrument to carry out multiple debugging according to selected communication mode.For example, if in the 3G network of reality, the debugging of video telephone must be used the assembly in the 3G network, and adopts the on-line debugging mode, and this will expend bigger systematic function, in the 3G network of reality, is infeasible therefore.If but use communication mode such as these support point point to-point communications of Bluetooth communication according to method provided by the invention; Can reduce the consumption of system; For condition has been created in the use of various development tools; For example breakpoint tracking etc., the use of various development tools will improve the developing and debugging of video telephone, improve debugging efficiency;
Three, owing to need not in actual 3G network, to develop, saved a large amount of research and development debugging costs.
Secondly, introduce the analogue means of visual telephone physical layer channel of the present invention.
Fig. 6 is the structural representation of the analogue means of visual telephone physical layer channel of the present invention, and this device comprises:
Passage is set up module 61, is used to use the communication mode of support point point to-point communication, sets up the physical layer channel with Correspondent Node.
The analogue means of visual telephone physical layer channel of the present invention; Use the communication mode of support point point to-point communication; Set up the physical layer channel with Correspondent Node,, make the bandwidth of this physical layer channel meet the requirement of video telephone communication then through the data transmission rate of the configuration physical layer channel of setting up.Because the communication mode of support point point to-point communication need not to be operated in actual 3G network, therefore can avoid present video telephone must use the physical layer channel of setting up in the actual 3G network to develop the many disadvantages of debugging, has accelerated the exploitation of video telephone.
Communication mode with above-mentioned support point point to-point communication is that Bluetooth communication is an example below, introduces two specific embodiments of the analogue means of visual telephone physical layer channel of the present invention.
The first, the analogue means of visual telephone physical layer channel of the present invention is accomplished callee's function, and Fig. 7 shows the internal structure of this device in this case, and wherein passage is set up module 61 and comprised:
The search that Correspondent Node carries out is intercepted in above-mentioned port snooping unit 601, can be for intercepting the search signal that Correspondent Node sends according to predefined called identify label.
The response that above-mentioned feedback unit 602 returns to Correspondent Node can be the return signal that returns to Correspondent Node.
The second, the analogue means of visual telephone physical layer channel of the present invention is accomplished calling party's function, and Fig. 8 shows the internal structure of this device in this case, and wherein passage is set up module 61 and comprised:
If further comprise identify label memory cell 613 in this device; Be used to store predefined identify label; The search that then above-mentioned search unit 611 carries out Correspondent Node; Can be for sending search signal according to said predefined called identify label, the response that above-mentioned feedback receiving element 612 received communication opposite ends are returned, the return signal that can return for Correspondent Node.
The analogue means of visual telephone physical layer channel of the present invention; When accomplishing callee's function; Can be according to callee's in the analogy method of visual telephone physical layer channel of the present invention works; When accomplishing calling party's function, can be according to calling party's in the analogy method of visual telephone physical layer channel of the present invention works.
In sum, more than being merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the analogy method of a visual telephone physical layer channel is characterized in that, this method comprises:
Use the communication mode of support point point to-point communication, set up the physical layer channel between the calling and called;
Dispose the data transmission rate of said physical layer channel, make the bandwidth of said physical layer channel meet the requirement of video telephone communication; The data transmission rate of the said physical layer channel of said configuration is: the data transmission rate that disposes said physical layer channel is per 20 millisecond of 160 byte, or is the integral multiple of per 20 millisecond of 160 byte.
2. the method for claim 1; It is characterized in that; The communication mode of said support point point to-point communication is the interconnected Socket communication based on transmission control protocol TCP/ Internet protocol IP of Bluetooth communication, wireless compatibility authentication WIFI or two-shipper, and the said physical layer channel of setting up between the calling and called is:
Calledly listen to the search that caller is carried out, return response, set up physical layer channel to caller.
3. method as claimed in claim 2 is characterized in that, preestablishes called identify label, the said called search that caller is carried out that listens to, to caller return the response be:
Calledly listen to the search signal that caller is sent according to predefined called identify label, return return signal to caller.
4. the analogue means of a visual telephone physical layer channel is characterized in that, this device comprises:
Passage is set up module, is used to use the communication mode of support point point to-point communication, sets up the physical layer channel with Correspondent Node;
Configuration module is used to said passage and sets up the physical layer channel that module is set up, and the configuration data transmission rate makes the bandwidth of said physical layer channel meet the requirement of video telephone communication; Saidly set up the physical layer channel that module is set up for said passage, the configuration data transmission rate is: the data transmission rate that disposes said physical layer channel is per 20 millisecond of 160 byte, or is the integral multiple of per 20 millisecond of 160 byte.
5. device as claimed in claim 4 is characterized in that, the communication mode of said support point point to-point communication is the interconnected Socket communication based on TCP/IP of Bluetooth communication, WIFI or two-shipper, and said passage is set up module and comprised:
The port snooping unit is used to intercept the search that Correspondent Node carries out;
Feedback unit is used for after said port snooping unit listens to the search that Correspondent Node carries out, returning response to Correspondent Node, sets up physical layer channel.
6. device as claimed in claim 5 is characterized in that, the search that Correspondent Node carries out is intercepted in said port snooping unit, for intercepting the search signal that Correspondent Node sends according to predefined called identify label;
The response that said feedback unit returns to Correspondent Node is the return signal that returns to Correspondent Node.
7. device as claimed in claim 4 is characterized in that, the communication mode of said support point point to-point communication is the interconnected Socket communication based on TCP/IP of Bluetooth communication, WIFI or two-shipper; Said passage is set up module and is comprised:
Search unit is used to carry out the search to Correspondent Node;
The feedback receiving element is used for after said search unit carries out the search to Correspondent Node, and physical layer channel is set up in the response that the received communication opposite end is returned.
8. device as claimed in claim 7 is characterized in that, further comprises the identify label memory cell in this device, is used to store predefined called identify label;
Said search unit carries out the search to Correspondent Node, for sending search signal according to said predefined called identify label;
The response that said feedback receiving element received communication opposite end is returned, the return signal that returns for Correspondent Node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100327291A CN101489084B (en) | 2008-01-15 | 2008-01-15 | Visual telephone physical layer channel simulation method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100327291A CN101489084B (en) | 2008-01-15 | 2008-01-15 | Visual telephone physical layer channel simulation method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101489084A CN101489084A (en) | 2009-07-22 |
| CN101489084B true CN101489084B (en) | 2012-07-25 |
Family
ID=40891731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100327291A Expired - Fee Related CN101489084B (en) | 2008-01-15 | 2008-01-15 | Visual telephone physical layer channel simulation method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101489084B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802855A (en) * | 2003-09-06 | 2006-07-12 | 中兴通讯股份有限公司 | Video phone terminal and its realizing method |
| CN101065943A (en) * | 2004-11-26 | 2007-10-31 | 艾利森电话股份有限公司 | Performance analysis of a circuit switched mobile telecommunications network |
-
2008
- 2008-01-15 CN CN2008100327291A patent/CN101489084B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802855A (en) * | 2003-09-06 | 2006-07-12 | 中兴通讯股份有限公司 | Video phone terminal and its realizing method |
| CN101065943A (en) * | 2004-11-26 | 2007-10-31 | 艾利森电话股份有限公司 | Performance analysis of a circuit switched mobile telecommunications network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101489084A (en) | 2009-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103188300B (en) | The methods, devices and systems of VOIP phone are realized in cloud computing environment | |
| CA2240654A1 (en) | Wireless information processing terminal and controlling method thereof | |
| CN101801062A (en) | Mobile terminal and network access method thereof | |
| CN103369160A (en) | Implementation method and system for communication by using intelligent roaming terminal | |
| CN102474553A (en) | Telephonic communications with intelligent protocol switching | |
| CN103369161B (en) | Implementation method and system for communication by using intelligent roaming terminal | |
| CN110366160A (en) | A kind of plurality of SIM cards cluster card reading call method and system based on Cloud Server | |
| CN103428384A (en) | System and method for realizing mobile VoIP (Voice over Internet Phone) service of smart handheld device | |
| US20060019643A1 (en) | Method of sending instruction to mobile phone by short message | |
| CN101384007A (en) | Inter-network data transmission method, apparatus and communication device and system | |
| JP5518099B2 (en) | Communication path establishment method using identification information of gateway server and mobile communication terminal | |
| CN204598005U (en) | In conjunction with the system of ADSL wireless router and telephone system processor | |
| CN101102334B (en) | Method and device for establishing information transmission between terminal device and mobile terminal | |
| CN101489084B (en) | Visual telephone physical layer channel simulation method and apparatus | |
| CN109698926A (en) | A kind of satellite communication terminal for realizing voice and video telephone using mobile phone terminal | |
| CN101868048B (en) | System for mobile phone | |
| CN1571464A (en) | A seamless communication method for IP telephone and telephone network | |
| US20130079023A1 (en) | Method, device and system for uniform number communication on a home gateway | |
| KR19990083853A (en) | Gateway system and controlling method for voice communication | |
| CN100455085C (en) | User terminal for carrying out point-to-point file transmission and its transmission method | |
| CN208094697U (en) | Video conferencing system | |
| US20100232420A1 (en) | Communication apparatus and related method | |
| KR100975865B1 (en) | Session establishment method using gateway server and phone number | |
| CN100446532C (en) | Network telephone system and communication method | |
| CN101374088B (en) | Mobile communication equipment capable of providing computer dialing/answering headline function and signal processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |