CN2796262Y - USB VoIP common telephone adaptor - Google Patents
USB VoIP common telephone adaptor Download PDFInfo
- Publication number
- CN2796262Y CN2796262Y CN 200420093465 CN200420093465U CN2796262Y CN 2796262 Y CN2796262 Y CN 2796262Y CN 200420093465 CN200420093465 CN 200420093465 CN 200420093465 U CN200420093465 U CN 200420093465U CN 2796262 Y CN2796262 Y CN 2796262Y
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- CN
- China
- Prior art keywords
- telephone
- voip
- interface
- circuit
- adapter
- 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
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Abstract
The utility model relates to a USB VoIP common telephone adapter. The adapter is provided with a telephone interface, a telephone line interface and a USB interface which are respectively connected to a common telephone, a telephone line supplied by a telecommunication operator and connected to a PC which is provided with VoIP talking software. When using the common telephone, a user can control the VoIP talking software to carry out VoIP talking without operating the keyboard and the mouse of the PC, and can also dial the common telephone PSTN telephone as usual, and the VoIP talking and the common PSTN talking can be switched over. The telephone can ring after the VoIP incoming call, and the user can answer the VoIP incoming call when off-hook. The utility model is in accord with the habit that people dial the telephone. The utility model adopts universal chips and devices, and the has the advantages of low cost, simple structure and stable performance.
Description
Affiliated technical field
The utility model belongs to the VoIP conversation software that utilizes on the ordinary telephone set control PC and carries out the device that VoIP converses, and is applicable to that domestic consumer, enterprise customer carry out the VoIP conversation, and communication process need not to operate PC.
Background technology
The main mode of VoIP conversation at present is: the user uses mouse, the keyboard operation VoIP software of conversing, and converses with earphone, microphone.Shortcoming is: do not meet the custom of making a phone call; Require the user that the PC operating experience is arranged; Can not be used for beating common pstn telephone; Do not possess the incoming call ringer function.These shortcomings have limited the development of VoIP greatly.
Summary of the invention
The utility model is developed with general-purpose chip and device, and by this device, the user uses ordinary telephone set, need not to operate keyboard, the mouse of PC, the VoIP conversation software that just can control on the PC carries out the VoIP conversation, also can dial common pstn telephone as usual, and can switch between the two; VoIP incoming call back telephone set also can ring, and off-hook can be answered the VoIP incoming call.
The utility model has three interface external interfaces (being ordinary telephone set interface, telephone line interface and USB interface), forms (as shown in Figure 1) by single-chip microcomputer, USB interface, dtmf decoder, SLIC/CODEC circuit, off-hook detection circuit, simulation circuit for answering, selected on-off circuit and other peripheral circuit.
Single-chip microcomputer is connected with USB interface, dtmf decoder, SLIC/CODEC circuit, off-hook detection circuit, simulation circuit for answering, selected on-off circuit and other peripheral circuit respectively by the I/O port.
Off-hook detection circuit string detects the off-hook condition of telephone set; The simulation circuit for answering inserts in the telephone line when carrying out the VoIP conversation, simulation outside line off hook state; Selector switch is a commutator, and the Chang Kaiduan of selector switch is connected to the SLIC/CODEC circuit, and the normal-closed end of selector switch is linked telephone line interface, and the common port of selector switch is linked telephone interface.Under so common state (comprising when USB interface does not connect PC), relay discharges, and telephone set is connected with telephone line; When dtmf decoder detects specific dtmf code, the adhesive of Single-chip Controlling relay, telephone set is connected with the SLIC/CODEC circuit, can carry out the VoIP conversation.
Single-chip microcomputer cooperates usb circuit to realize the function of standard USB audio frequency apparatus, the VoIP voice data that software receives of conversing is become speech by the SLIC/CODEC circuit reduction, play back from the receiver of telephone set and to pass to user's ear, and user's speech is become voice data by telephone set microphone, SLIC/CODEC circuit handle to VoIP conversation software.
The utility model is broken away from earphone, Mike people to carry out VoIP conversation, meet the custom that people call, need not the PC operating experience, has VoIP incoming call ringer function, can also be used to dialing common pstn telephone, be easy to be accepted by the user, low price, stable performance have vast potential for future development.
Description of drawings
Fig. 1 is a USB VoIP plain old telephone adapter principle assumption diagram
Embodiment
Be described in further detail the utility model below in conjunction with principle assumption diagram.
Usb circuit U1, telephone interface U8, telephone line interface U9 are connected respectively to PC USB port that VoIP conversation software has been installed, ordinary telephone set and telephone line.
Usb circuit U1 and single-chip microcomputer U2 cooperate a USB equipment complex, a standard USB audio frequency apparatus and the standard HID equipment realized, the USB audio frequency apparatus is redirected to this device with the converse speech of software of VoIP, and HID equipment is used for realizing the action cooperation between VoIP conversation software and this device.
SLIC/CODEC circuit U 3 is finished the mutual conversion of voice data and audio signal, is connected to single-chip microcomputer U2 by pcm bus, and single-chip microcomputer U2 controls SLIC/CODEC circuit U 8 by control signal.
Dtmf decoder U4 detects and is connected to the key of pressing on the telephone set of telephone interface U8, and gives single-chip microcomputer U2 with decoded result and handle.
Off-hook detection circuit U 5 detects the off-hook/hook state of the telephone set that is connected to telephone interface U8, and gives single-chip microcomputer U2 with this state and handle.
Selected on-off circuit U6 is connected to SLIC/CODEC circuit U 3 or telephone line according to the instruction that single-chip microcomputer sends with telephone set, thereby realizes VoIP conversation and common PSTN conversation respectively.
Simulation circuit for answering U7 can make telephone line present off-hook (the line is busy) state when carrying out the VoIP conversation.
Claims (4)
1. USB VoIP plain old telephone adapter, it is characterized in that this adapter has telephone interface, telephone line interface and USB interface, be connected respectively to ordinary telephone set, a telephone line and the PC of VoIP conversation software has been installed, the user uses ordinary telephone set, need not to operate keyboard, the mouse of PC, the VoIP conversation software that just can control on the PC carries out the VoIP conversation, also can dial common pstn telephone as usual, and can switch between the two; VoIP incoming call back telephone set also can ring, and off-hook can be answered the VoIP incoming call.
2. according to the described plain old telephone adapter of claim 1, it is characterized in that: described adapter has three interface external interfaces, be ordinary telephone set interface, telephone line interface and USB interface, its annexation is: telephone interface connects an ordinary telephone set; Telephone line interface is connected to telephone line; USB interface is led to and is received the PC that VoIP conversation software has been installed.
3. according to the described plain old telephone adapter of claim 1, it is characterized in that: form by single-chip microcomputer, USB interface, dtmf decoder, SLIC/CODEC circuit, off-hook detection circuit, simulation circuit for answering, selected on-off circuit and other peripheral circuit; Its annexation is: single-chip microcomputer is connected with USB interface, dtmf decoder, SLIC/CODEC circuit, off-hook detection circuit, simulation circuit for answering, selected on-off circuit and other peripheral circuit respectively by the I/O port.
4. according to the described plain old telephone adapter of claim 1, it is characterized in that: off-hook detection circuit string detects the off-hook condition of telephone set; The simulation circuit for answering inserts in the telephone line when carrying out the VoIP conversation, simulation outside line off hook state; Selector switch is a commutator, and the Chang Kaiduan of selector switch is connected to the SLIC/CODEC circuit, and the normal-closed end of selector switch is linked telephone line interface, and the common port of selector switch is linked telephone interface.Comprise like this under the common state when USB interface does not connect PC that relay discharges, telephone set is connected with telephone line; When dtmf decoder detects specific dtmf code, the adhesive of Single-chip Controlling relay, telephone set is connected with the SLIC/CODEC circuit, can carry out the VoIP conversation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093465 CN2796262Y (en) | 2004-09-09 | 2004-09-09 | USB VoIP common telephone adaptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093465 CN2796262Y (en) | 2004-09-09 | 2004-09-09 | USB VoIP common telephone adaptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2796262Y true CN2796262Y (en) | 2006-07-12 |
Family
ID=36814009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420093465 Expired - Fee Related CN2796262Y (en) | 2004-09-09 | 2004-09-09 | USB VoIP common telephone adaptor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2796262Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132454B (en) * | 2007-09-26 | 2010-11-03 | 杭州华三通信技术有限公司 | VoIP implementing method and coaxial network terminal and coaxial line terminal |
-
2004
- 2004-09-09 CN CN 200420093465 patent/CN2796262Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101132454B (en) * | 2007-09-26 | 2010-11-03 | 杭州华三通信技术有限公司 | VoIP implementing method and coaxial network terminal and coaxial line terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Su Yong Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |