CN2753069Y - VoIP terminal adapter used for IP network - Google Patents
VoIP terminal adapter used for IP network Download PDFInfo
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- CN2753069Y CN2753069Y CN 200420150246 CN200420150246U CN2753069Y CN 2753069 Y CN2753069 Y CN 2753069Y CN 200420150246 CN200420150246 CN 200420150246 CN 200420150246 U CN200420150246 U CN 200420150246U CN 2753069 Y CN2753069 Y CN 2753069Y
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Abstract
The utility model relates to a VoIP terminal adapter which is applied to an IP network. The utility model comprises an FOX interface, a ringing detecting circuit and a data processor, wherein the ring interface and the tip interface of the FOX interface are connected with a PSTN telephone line, and the FOX interface, the ringing detecting circuit and the data processor are electrically connected orderly. The utility model also comprises a switching circuit and an off-hook and on-hook detecting circuit, wherein the input of the off-hook and on-hook detecting circuit is connected with the FOX interface, and the output of the off-hook and on-hook detecting circuit is connected with the data processor. The output of the data processor is connected with the switching circuit. The ringing detecting circuit is connected in parallel with the position between the ring interface and the tip interface, and the off-hook and on-hook detecting circuit is connected in series with the ring interface. Through the arrangement of the ringing detecting circuit and the off-hook and on-hook detecting circuit, whether the terminal adapter is in the state of the beginning of off-hook, talking, or the end of on-hook can be judged. Through controlling the high electrical level or low electrical level of the I/O interface of the data processor, the utility model controls the switching of the switching circuit between a VoIP talking state and a PSTN talking state.
Description
Technical field
The utility model relates to the IP network communications field, especially about a kind of VoIP terminal adapter that is applied to IP network.
Background technology
Existing VoIP terminal adapter generally comprises the FXO mouth, ring detecting circuit, microprocessor and controlled circuit, and this FXO mouth is connected with the pstn telephone line, and the input of ring detecting circuit connects this FXO mouth, and its output connects microprocessor.When using the PSTN conversation, then ring detecting circuit detects ringing-current, and the ringing-current status signal is transported to microprocessor, and microprocessor receives the PSTN status signal, thus control controlled circuit and make it be in the PSTN talking state.Yet, there is following shortcoming in this kind circuit structure: because can only detect ringing-current, so can only judge whether to be in talking state, but when conversation begins and finishes for PSTN, then can not judge, thereby VoIP dial dial and deposit with PSTN in, can not realize the switching of VoIP and PSTN call office.
The utility model content
The purpose of this utility model is to provide a kind of VoIP terminal adapter that is applied to IP network that can realize switching between VoIP and the PSTN conversation.
The purpose of this utility model is achieved in that this is applied to the VoIP terminal adapter of IP network, comprise the FXO interface, ring detecting circuit and data processor, the ring interface of FXO mouth is connected with the pstn telephone line with the tip interface, the FXO mouth, ring detecting circuit and data processor electrically connect successively, it also comprises commutation circuit and picking/hanging machine detection circuit, the input of picking/hanging machine detection circuit connects the FXO mouth, its output connects data processor, picking/hanging machine detection circuit and ring detecting circuit receive the PSTN signal by it, and this PSTN state information is input to data processor, its selection VoIP or PSTN is controlled in this data processor output control information to commutation circuit.
Described ring detecting circuit is connected between Ring and the tip interface, and picking/hanging machine detection circuit is serially connected with the ring interface.
Described picking/hanging machine detection circuit comprises self adapting circuit of polarity, sample circuit and optocoupler testing circuit, self adapting circuit of polarity receives the current signal of off-hook or on-hook and carries out the self adaptation of this electric current, sample this current information and be entered into the optocoupler testing circuit of sample circuit, the optocoupler testing circuit is transported to data processor to this current information with the level form, and data processor receives this level information and controls commutation circuit and select PSTN or VoIP.
Compared with prior art, the utlity model has following advantage: by the setting of ring detecting circuit and picking/hanging machine detection circuit, the state that can judge whether this terminal adapter is in that off-hook begins, conversation or on-hook finishes, and be in high level or low level by the I/O interface of control data processor, and then the control commutation circuit is switched between VoIP and PSTN talking state.
Description of drawings
Fig. 1 is the circuit block diagram that the utility model is applied to the VoIP terminal adapter of IP network.
Fig. 2 is the circuit block diagram of the picking/hanging machine detection circuit part of the utility model VoIP terminal adapter of being applied to IP network.
Embodiment
See also Fig. 1 and Fig. 2, the VoIP terminal adapter that the utility model is applied to IP network is to be connected with the pstn telephone line by the FXO mouth, and the ring interface of this telephone wire and FXO mouth and tip interface electrically connect.This terminal adapter comprises ring detecting circuit, picking/hanging machine detection circuit, data processor and commutation circuit.The PSTN signal is input to ring detecting circuit and dislodging machine circuit respectively, ring detecting circuit and dislodging machine circuit receive this PSTN state information, and this PSTN state information is input to data processor, data processor receives this state information, and controls connected commutation circuit and select PSTN or VoIP.
This ring detecting circuit is an available circuit, it is parallel between ring interface and the tip interface, ringing-current when carrying out the PSTN conversation in order to detection, and the state information of this ringing-current is transported to data processor, this data processor is according to the state information that receives, and the control commutation circuit remains on the PSTN talking state, in addition, for the ringing signal of level and smooth this ring detecting circuit output and reduce the power consumption of data processor, can connect the signal smoothing circuit in its output, the output of this signal smoothing circuit connects data processor.Picking/hanging machine detection circuit comprises self adapting circuit of polarity, sample circuit and optocoupler testing circuit, and the output of this optocoupler testing circuit connects data processor.Under hook state, the electric current on the pstn telephone line is 10uA ~ 100uA; Under off hook state, the electric current on the pstn telephone line is 18mA ~ 80mA, by the variation that utilizes this electric current machine state-detection that realizes seting out.When carrying out the on-hook detection, the current information on the PSTN line is carried out the adaptation of electric current by self adapting circuit of polarity, by sample circuit this current information of sampling, this current information is input to the optocoupler testing circuit, this optical coupling testing circuit is accepted this current information and is input to data processor with level signal, this data processor is accepted this level information, and sends control signal and give commutation circuit.Electric current under the hook state on the PSTN line has only 10uA ~ 100uA, behind the current sample, because this undercurrent so that the optocoupler of optocoupler testing circuit is in cut-off state, makes the I/O interface of data processor be in high level; Electric current is 18mA ~ 80mA under the off hook state, behind the current sample, makes the optocoupler conducting, then the I/O mouth of data processor is in low level, by making data processor output high-low level, switch between PSTN and VoIP and control commutation circuit, thereby realize PSTN conversation and IP network conversation.This commutation circuit is controlled the available circuit of its switch for utilizing level signal, is generally relay or switching circuit.
Terminal adapter of the present utility model is defaulted as the VoIP talking state when initial condition.When user's off-hook, then picking/hanging machine detection circuit detects the electric current on the PSTN line, thereby makes optocoupler be in conducting, and then makes the I/O mouth of data processor be in high level, makes commutation circuit switch to the PSTN talking state; In user's communication process, the ringing-current when ring detecting circuit detects conversation, and to data processor transmission PSTN state information, data processor receives this PSTN status signal, and the control commutation circuit is selected the PSTN state; During on-hook,, thereby make optocoupler be in cut-off state when end of conversation, make the I/O interface of data processor be in low level, thereby the control commutation circuit is selected the VoIP talking state then because the electric current on the PSTN line is 10uA ~ 100uA.
Setting by ring detecting circuit and picking/hanging machine detection circuit, the state that can judge whether this terminal adapter is in that off-hook begins, conversation or on-hook finishes, and be in high level or low level by control data processor I/O interface, and then the control commutation circuit is switched between VoIP and PSTN talking state.
Claims (5)
1. VoIP terminal adapter that is applied to IP network, comprise the FXO interface, ring detecting circuit, and data processor, the ring interface of FXO mouth is connected with the pstn telephone line with the tip interface, the FXO mouth, ring detecting circuit and data processor electrically connect successively, it is characterized in that: also comprise commutation circuit and picking/hanging machine detection circuit, the input of picking/hanging machine detection circuit connects the FXO mouth, its output connects data processor, picking/hanging machine detection circuit and ring detecting circuit receive the PSTN signal by it, and this PSTN state information is input to data processor, its selection VoIP or PSTN is controlled in this data processor output control information to commutation circuit.
2. the VoIP terminal adapter that is applied to IP network as claimed in claim 1 is characterized in that: described ring detecting circuit is connected between ring and the tip interface, and picking/hanging machine detection circuit is serially connected with the ring interface.
3. the VoIP terminal adapter that is applied to IP network as claimed in claim 2, it is characterized in that: described picking/hanging machine detection circuit comprises self adapting circuit of polarity, sample circuit and optocoupler testing circuit, self adapting circuit of polarity receives the current signal of off-hook or on-hook and carries out the self adaptation of this electric current, sample this current information and be entered into the optocoupler testing circuit of sample circuit, the optocoupler testing circuit is transported to data processor to this current information with the level form, and data processor receives this level information and controls commutation circuit and select PSTN or VoIP.
4. as any described VoIP terminal adapter that is applied to IP network of claim 1-3, it is characterized in that: also comprise the signal smoothing circuit, the input of this signal smoothing circuit connects ring detecting circuit, and its output connects data processor.
5. as any described VoIP terminal adapter that is applied to IP network of claim 1-3, it is characterized in that: described commutation circuit is switching circuit or relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150246 CN2753069Y (en) | 2004-06-29 | 2004-06-29 | VoIP terminal adapter used for IP network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150246 CN2753069Y (en) | 2004-06-29 | 2004-06-29 | VoIP terminal adapter used for IP network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2753069Y true CN2753069Y (en) | 2006-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150246 Expired - Fee Related CN2753069Y (en) | 2004-06-29 | 2004-06-29 | VoIP terminal adapter used for IP network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2753069Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444584C (en) * | 2006-06-02 | 2008-12-17 | 杭州华三通信技术有限公司 | Method and a route for hanging up terminal |
| CN101860629A (en) * | 2010-05-28 | 2010-10-13 | 杭州华三通信技术有限公司 | Method, equipment and system for binding external exchange port and IP phone in one-to-one correspondence |
| CN101478618B (en) * | 2008-01-03 | 2011-07-20 | 迈普通信技术股份有限公司 | External line state detection method for external switching center |
| CN101472011B (en) * | 2007-12-26 | 2012-05-30 | 迈普通信技术股份有限公司 | Detection method of analog trunk line |
| CN103457781A (en) * | 2012-05-28 | 2013-12-18 | 华为终端有限公司 | Telephone service switching control method and telephone service uplink gateway |
-
2004
- 2004-06-29 CN CN 200420150246 patent/CN2753069Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444584C (en) * | 2006-06-02 | 2008-12-17 | 杭州华三通信技术有限公司 | Method and a route for hanging up terminal |
| CN101472011B (en) * | 2007-12-26 | 2012-05-30 | 迈普通信技术股份有限公司 | Detection method of analog trunk line |
| CN101478618B (en) * | 2008-01-03 | 2011-07-20 | 迈普通信技术股份有限公司 | External line state detection method for external switching center |
| CN101860629A (en) * | 2010-05-28 | 2010-10-13 | 杭州华三通信技术有限公司 | Method, equipment and system for binding external exchange port and IP phone in one-to-one correspondence |
| CN101860629B (en) * | 2010-05-28 | 2013-06-05 | 杭州华三通信技术有限公司 | Method, equipment and system for binding external exchange port and IP phone in one-to-one correspondence |
| CN103457781A (en) * | 2012-05-28 | 2013-12-18 | 华为终端有限公司 | Telephone service switching control method and telephone service uplink gateway |
| CN103457781B (en) * | 2012-05-28 | 2017-02-08 | 华为终端有限公司 | Telephone service switching control method and telephone service uplink gateway |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN CITY ZHENHUA NEW CONCEPT OF NETWORK COMM Free format text: FORMER OWNER: XINGAINIAN SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD., SHENZHEN CITY Effective date: 20060728 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060728 Address after: 518000, Shenzhen, Guangdong, Baoan District province Xixiang street, 44 Aberdeen Road, Zhenhua Industrial Building 2, building 2 East Patentee after: Shenzhen Koncept Network Communication Equipment Co. Ltd. Address before: 518010 Guangdong city in Shenzhen Province, Luohu District people's South shenfang Plaza A block, room 2802, 2801 Patentee before: Xingainian Science & Technology Development Co., Ltd., Shenzhen City |
|
| 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 |