CN201393255Y - Device for switching between IP phone and normal PSTN phone - Google Patents
Device for switching between IP phone and normal PSTN phone Download PDFInfo
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- CN201393255Y CN201393255Y CN200920050944U CN200920050944U CN201393255Y CN 201393255 Y CN201393255 Y CN 201393255Y CN 200920050944 U CN200920050944 U CN 200920050944U CN 200920050944 U CN200920050944 U CN 200920050944U CN 201393255 Y CN201393255 Y CN 201393255Y
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Abstract
The utility model discloses a device used for switching between an IP phone and a normal PSTN phone, which is characterized in that the device comprises an external line interface, a telephone interface, a switch/resume circuit, an isolating circuit, an audio interface, a power source circuit and a microprocessor. The external circuit interface, the telephone interface and the isolating circuit are respectively connected with the switch/resume circuit; the audio interface is connected with the isolating circuit; and the power source circuit is connected with the external line interface. The device overcomes the disadvantage of high cost of the two-module phone, realizes the switching between the IP phone and the normal PSTN phone and enables a user to make phone calls in the most economic and convenient way.
Description
Technical field
The utility model relates to the switching device shifter of communication field, especially a kind of device that is used to switch IP phone and pstn telephone.
Background technology
IP phone is the telephone service of opening by the network technology content of IP Internet Protocol regulation, and translator of Chinese is the networking telephone or Internet Protocol telephone, carries out real-time voice transfer service by the Internet net exactly in simple terms.It is to utilize the media of Internet Internet for voice transfer, thereby realizes a kind of brand-new communication technology of voice communication.IP phone is compared with black phone obvious difference: black phone is with the media of public switched telephone network as voice transfer; IP phone then is that voice signal is changed between public switched telephone network and Internet, voice signal is compressed encapsulation, convert the IP bag to, simultaneously, the IP technology allows the shared same bandwidth resources of a plurality of users, change the mode that black phone is monopolized a channel by unique user, saved the expense that the user uses individual channel.But, except defectives such as omnidistance speech quality can not guarantee, also exist telephone terminal and use inadequately shortcoming easily, and black phone speech quality height, be communicated with advantage such as reliable, easy for installation and guaranteed that then it survives in a very long time from now on.Therefore the double-mode phone of IP phone and the switching of common pstn telephone occurred supporting simultaneously, but for the user, behind the use double-mode phone, original plain old telephone has just abandoned, and its cost is higher, is unfavorable for popularizing of IP phone.
The utility model content
The purpose of this utility model is to provide a kind of and overcomes the expensive shortcoming of double-mode phone, and the device that is used to switch IP phone and common pstn telephone that is user-friendly to.
For achieving the above object, the utility model has adopted following technical scheme:
A kind of device that is used to switch IP phone and common pstn telephone, it is characterized in that: comprise outer line interface, telephone interface, switching/recovery circuit, isolate circuit, audio interface, power circuit and microprocessor, described outer line interface, telephone interface, isolation circuit are connected with switching/recovery circuit respectively, described audio interface is connected with the isolation circuit, and described power circuit is connected with outer line interface.
Described audio interface comprises audio input interface and audio output interface.
Be connected with IP ring detection line between described isolation circuit and the described microprocessor; Be connected with outside line ring detection line between described outer line interface and the described microprocessor.
Be connected with dislodging machine testing circuit between described outer line interface or described telephone interface and the described microprocessor.
Be connected with the dialing detection line between described telephone interface and the described microprocessor.
Be connected with the DTMF transmitting line between described isolation circuit and the described microprocessor.
Be connected with ring generation circuit between described telephone interface and the described switching/recovery circuit, this ring generation circuit also is connected with microprocessor; Be connected with simulation off-hook circuit between described switching/recovery circuit and the described ring generation circuit, this simulation off-hook circuit also is connected with microprocessor.
The utlity model has following beneficial effect: can not buy under the situation of double-mode phone the user, realize the switching between IP phone and the common pstn telephone, make the user can with most economical, mode is carried out telephone communication easily.
Description of drawings
Connection block diagram when Fig. 1 uses for the utility model;
Fig. 2 is that the circuit of a kind of embodiment of the present utility model connects block diagram.
Wherein, the outer line interface of 1-, 2-telephone interface, 3-switching/recovery circuit, 4-isolates circuit, 5-audio interface, the 6-power circuit, 7-microprocessor, 8-IP ring detection line, 9-outside line ring detection line, 10-dislodging machine testing circuit, the 11-detection line that dials, the 12-DTMF transmitting line, 13-ring generation circuit, 14-ring generation circuit, 15-simulation off-hook circuit.
Embodiment
As shown in Figure 1, before using this device, the outer line interface of this device is connected to the PSTN port, audio interface is connected on the sound card audio interface of the computer that moves IP phone software, and common pstn telephone is connected on the telephone interface of this device.By default, the switching of this device/recovery circuit is connected to the PSTN port with common pstn telephone, does not influence dialing or answering of plain old telephone; Dial or answer IP phone, need common pstn telephone be connected to by switching/recovery circuit that the automatic or manual mode is controlled this device on the sound card audio interface of computer of operation IP phone software, it is speech and signaling data that computer sound card carries out sample conversion to speech and signaling-information, speech and signaling data become to meet the IP packet of procotol by the IP phone software processes, send to Internet; Equally, become speech and signaling data, send to telephone set after being converted into speech and signaling-information by sound card again by the IP phone software processes from the IP packet of Internet.Answer after IP phone finishes dialing, the switching of this device/recoverys circuit is connected to the PSTN port with common pstn telephone recovery again.
As shown in Figure 2, comprise outer line interface 1, be used to connect the PSTN port; Telephone interface 2 is used to connect ordinary telephone set; Switching/recovery circuit 3 is used for switching IP phone and common pstn telephone path; Isolate circuit 4, be used to realize the conversion of two or four lines; Audio interface 5 is used for being connected with computer sound card; Power circuit 6 is used for extracting power supply and providing power supply for All other routes from outside line; Microprocessor 7 is used for the mode of operation that automaticallyes switch.Described outer line interface 1, telephone interface 2, isolation circuit 4 are connected with switching/recovery circuit 3 respectively, and described audio interface 5 is connected with isolation circuit 4, and described power circuit 6 is connected with outer line interface 1.
Be connected with IP ring detection line 8 between described isolation circuit 4 and the described microprocessor 7, be used for detecting the IP incoming ring and give microprocessor 7 result; Be connected with outside line ring detection line 9 between described outer line interface 1 and the described microprocessor 7, be used for detecting common pstn telephone incoming ring and give microprocessor 7 testing result.
Be connected with dialing detection line 11 between described telephone interface 2 and the described microprocessor 7, be used for detecting the common pstn telephone dialing information that is connected on the telephone interface 2 and give microprocessor 7 testing result.
Be connected with DTMF transmitting line 12 between described isolation circuit 4 and the described microprocessor 7, under the control of microprocessor 7, realize automatic dialing or send signaling to computer sound card.
Be connected with ring generation circuit 13 between described telephone interface 2 and the described switching/recovery circuit 3, this ring generation circuit 13 also is connected with microprocessor 7, under the control of microprocessor 7, when the IP calling, send bell signal to external common pstn telephone from telephone interface 2; Be connected with simulation off-hook circuit 15 between described switching/recovery circuit 3 and the described ring generation circuit 14, this simulation off-hook circuit 15 also is connected with microprocessor 7, under the control of microprocessor 7, is used for simulating common pstn telephone off-hook when the IP calling.
Claims (8)
1. device that is used to switch IP phone and common pstn telephone, it is characterized in that: comprise outer line interface (1), telephone interface (2), switching/recovery circuit (3), isolate circuit (4), audio interface (5) power circuit (6) and microprocessor (7), described outer line interface (1), telephone interface (2), isolation circuit (4) are connected with switching/recovery circuit (3) respectively, described audio interface (5) is connected with isolation circuit (4), and described power circuit (6) is connected with outer line interface (1).
2. the device that is used to switch IP phone and common pstn telephone according to claim 1 is characterized in that: described audio interface (5) comprises audio input interface and audio output interface.
3. the device that is used to switch IP phone and common pstn telephone according to claim 1 and 2 is characterized in that: be connected with IP ring detection line (8) between described isolation circuit (4) and the described microprocessor (7); Be connected with outside line ring detection line (9) between described outer line interface (1) and the described microprocessor (7).
4. the device that is used to switch IP phone and common pstn telephone according to claim 1 and 2 is characterized in that: be connected with dislodging machine testing circuit (10) between described outer line interface (1) or described telephone interface (2) and the described microprocessor (7).
5. the device that is used to switch IP phone and common pstn telephone according to claim 1 and 2 is characterized in that: be connected with dialing detection line (11) between described telephone interface (2) and the described microprocessor (7).
6. the device that is used to switch IP phone and common pstn telephone according to claim 1 and 2 is characterized in that: be connected with DTMF transmitting line (12) between described isolation circuit (4) and the described microprocessor (7).
7. the device that is used to switch IP phone and common pstn telephone according to claim 1 and 2, it is characterized in that: be connected with ring generation circuit (13) between described telephone interface (2) and described switching/recovery circuit (3), this ring generation circuit (13) also is connected with microprocessor (7).
8. the device that is used to switch IP phone and common pstn telephone according to claim 7, it is characterized in that: be connected with simulation off-hook circuit (15) between described switching/recovery circuit (3) and the described ring generation circuit (14), this simulation off-hook circuit (15) also is connected with microprocessor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920050944U CN201393255Y (en) | 2009-02-02 | 2009-02-02 | Device for switching between IP phone and normal PSTN phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920050944U CN201393255Y (en) | 2009-02-02 | 2009-02-02 | Device for switching between IP phone and normal PSTN phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201393255Y true CN201393255Y (en) | 2010-01-27 |
Family
ID=41600076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920050944U Expired - Fee Related CN201393255Y (en) | 2009-02-02 | 2009-02-02 | Device for switching between IP phone and normal PSTN phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201393255Y (en) |
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2009
- 2009-02-02 CN CN200920050944U patent/CN201393255Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20110202 |