CN100502409C - A data interface - Google Patents
A data interface Download PDFInfo
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- CN100502409C CN100502409C CNB2003101113390A CN200310111339A CN100502409C CN 100502409 C CN100502409 C CN 100502409C CN B2003101113390 A CNB2003101113390 A CN B2003101113390A CN 200310111339 A CN200310111339 A CN 200310111339A CN 100502409 C CN100502409 C CN 100502409C
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Abstract
This invention relates to a data interface especially to a data interface deciding power supply and phone relying on the type of data terminal equipments(DTE) including the ether net interface line RJ45 net line and a transformation coupler, four pairs of twisted-pair lines in RJ45 net line are defined as follows: 1, 2, 3, 6 are defined as the data/phone lines, 4,5 are defined as the power positive terminal lines, 7,8 are the negative lines, and 1,2 are connected with either end of the coupler, the central tap of the coupler is linked to the phone line, 3,6 are connected with either end of another transformation coupler, the central tap is linked with the phone line, those who use said interface can switch in the ether net to realize data communication or switch in PSTN net to transfer phones and provide feed for terminal equipments. This invention provides a method for automatically identifying the end type to provide supply to it accordingly.
Description
Technical field
The present invention relates to a kind of data-interface, be particularly related to a kind of data-interface that relies on power supply of data terminal equipment (DTE) type decided and phone, just can finish access network based on ethernet simultaneously with this interface and realize data communication, insert PSTN network transmission voice and provide power supply to terminal equipment.
Background technology
The technical background of Power-over-Ethernet: insert by the domestic consumer circuit, not only can access network based on ethernet acceptance/transmission network data, when needs are powered, can also provide remote power feeding.Along with development of Communication Technique, IP phone, wireless local network connecting point and IP safety camera, more universal, these electricity consumption of equipment amounts reduce, and are very urgent by Ethernet netting twine remote power feeding.One interface of the network terminal (wireless local net access device, notebook computer and network camera, IP phone) equipment now commonly used is connected to telecommunications enterprise's local network, another one is connected to the Alternating Current Power Supply net, along with the increase of all network equipments in enterprise, the department,, these equipment also brought the expense of a costliness for providing alternating electromotive force.Business people just again need not have been carried various plug at whilst on tour.Ethernet netting twine RJ45 connector will become general attaching plug.The extensive use on market of Ethernet Power-over-Ethernet is particularly at IP phone, WLAN (wireless local area network) and IP security marketplace.The supporter of this application claims that because other power line and supply socket need not be installed, this technology can be saved 50% mounting cost.
The technical background of Power-over-Ethernet and Public Switched Telephone Network PSTN voice: this technology has on the basis of Power-over-Ethernet and develops, increased the transfer capability of PSTN voice, the information system requirement of network-termination device is strong at present, though the IP phone by data network transmission data and voice can satisfy this demand purely, but need the cooperation of various places gateway, also not extensive at present the use.PSTN voice transfer and transfer of data that the interface of the present invention definition will use just on a large scale combine, and are applicable to that DESKTOP INFORMATION phone etc. had not only needed voice but also needed the equipment of mass data service.
Summary of the invention
The purposes that the purpose of this invention is to provide a kind of interface and this interface, this interface has been realized transmitting simultaneously data, feed and has been presented the PSTN voice signal by a RJ45 netting twine (4 pairs of twisted-pair feeders); RJ45 netting twine that uses and common netting twine or identical to passing netting twine, different according to the terminal equipment requirement; Data terminal equipment can be common network interface card, by the network terminal kind equipment of the remote power feeding of the adaptive design of this interface requirement, to different terminal equipments, the present invention can discern automatically, and whether selects feed and the pstn telephone signal is provided.
A kind of RJ45 interface with voice signal transmission and feed protection mechanism; described interface comprises Ethernet interface line RJ45 netting twine and transformation coupler; in the RJ45 netting twine the 4 pairs of twisted-pair feeders just 8 lines be decided to be (1 in order; 2; 3; 4; 5; 6; 7; 8); wherein (1; 2; 3; 6) four lines are defined as data/telephone wire; (4; 5) two lines are defined as the power positive end line; (7; 8) two lines are defined as the power-end line; (4; 5) anode of two line parallel transmission power supplys; (7; 8) negative terminal of two line parallel transmission power supplys; (1; 2) two lines link to each other with transformation coupler two ends respectively; the centre cap of transformation coupler links to each other with telephone wire; (3; 6) two lines link to each other with another transformation coupler two ends respectively, and the centre cap of this transformation coupler links to each other with telephone wire.
Described RJ45 interface provides the transmittability of analog voice when the Ethernet data transmission is provided, this interface provides the feed protection mechanism according to loadtype decision power supply when feed is provided.
Described RJ45 interface utilizes the constant voltage power supply in the utmost point short time, and the curtage situation of test load just powers to the load when load current or voltage are in certain scope.
Because interface of the present invention is not only common network-termination device, the special-purpose terminal equipment that also can be the far-end power supply simultaneously provides power supply, and Interface design is easy, can satisfy the requirement and the purpose of client miniaturization, line simplification, " a bite is used more ".Make the terminal equipment that meets this interface requirement only just can satisfy its all peripheral line, thereby terminal equipment is more simplified by a RJ45 line.
Description of drawings
Fig. 1 is power supply, phone and the network data transmission diagram on RJ45.
Fig. 2 is load identification and power supply the principle block diagram.
Fig. 3 is ADSL DESKTOP INFORMATION telephone system figure.
Fig. 4 is the exchange interface block diagram by the present invention's design.
Embodiment
A kind of data-interface, described interface comprises Ethernet interface line RJ45 netting twine and transformation coupler, in the RJ45 netting twine the 4 pairs of twisted-pair feeders just 8 lines be decided to be (1,2,3,4,5,6,7,8) in order, wherein 1,2,3,6 four line is defined as data/telephone wire, 4,5 two lines are defined as the power positive end line, 7,8 two lines are defined as the power-end line, as table 1; RJ45 has 8 lines, and stube cable comprises 4 pairs of twisted-pair feeders, Institute of Electrical and Electric Engineers IEEE802.3 standard definition transfer of data use 1,2 and 3,6 two pair of twisted-pair feeder, other two pairs of twisted-pair feeders are of no use or keep.IEEE802.3af utilizes remaining two pairs of cables or data wire to make feed on the basis of IEEE802.3 definition.We also will transmit phone except will realizing feed and transfer of data, and to guarantee and other network equipment compatibilities, with transmission LAN data that can not be correct when interconnected with the network terminal of feed, can not cause when interconnected terminal equipment to damage with the network terminal of band feed, thereby the definition in the present invention of this interface and above-mentioned two operating suchs, the concrete definition as table 1:
The definition of 8 lines in the table 1RJ45 netting twine
| Sequence number | 1、2 | 4、5 | 3、6 | 7、8 |
| Definition | Data/phone | Power positive end | Data/phone | Power supply negative terminal |
Press the definition of table 1, two pairs of twisted-pair feeders of power supply, and the transmitting-receiving of network data also will be with two pairs of twisted-pair feeders, telephone signal does not just have independent circuit transmission like this, the present invention utilizes the mirage principle to realize phone and network data mixed transport, thereby has realized transmitting data, feed simultaneously and present telephone signal on a RJ45 line.
All can there be isolating transformer at the two ends of the network equipment, use to have centre tapped transformer, and utilize its centre cap telephone signal that is coupled, and so just can be implemented on the network data line realization and transmit phone simultaneously.With accompanying drawing 1 the realization principle is described, the anode of 4,5 two line parallel transmission power supplys in the diagram, 7, the negative terminal of 8 two line parallel transmission power supplys, 1,2 two lines link to each other with transformation coupler two ends respectively, the centre cap of transformation coupler links to each other with telephone wire, 3,6 two lines link to each other with another transformation coupler two ends respectively, and the centre cap of this transformation coupler links to each other with telephone wire.1, the pair of data lines of 2 twisted-pair feeders transmission reception or transmission, 3, the pair of data lines of 6 twisted-pair feeders transmission transmission or reception, one end of telephone wire is coupled on 1,2 lines by the centre cap that receives or send transformer, and the other end of same telephone wire also is coupled on 3,6 lines by centre cap.On terminal equipment, can restore telephone signal, so just realize the collinear transmission of network data and phone with same centre tapped mode.
Rely on the implementation of the circuit of data terminal type decided power supply
After connecting a resistance respectively, 4 pairs of twisted-pair feeders of common Ethernet card RJ45 are connected in parallel.The present invention utilizes this load characteristic to come the identification terminal type exactly, and whether decision is to power terminal equipment.The type of load mainly contains following four kinds: 1: common Ethernet card, 2: by the terminal of this Interface design, 3: zero load, 4: load short circuits.Load current when unloaded is zero; Load current during short circuit is very big.These four kinds of loads are arranged as follows by size: 4: short circuit〉1: common network interface card〉2: by the terminal of this Interface design〉3: zero load, therefore if can identify the size of load, just can corresponding differentiation loadtype.We set two values, one is the higher limit that allows electric current, one is the lower limit of electric current, if electric current has surpassed upper current limit, or be lower than the lower limit of electric current, think that promptly what link to each other with port is common network interface card or other abnormal conditions, this is cut off power switch and phone control switch, not to power terminal equipment and telephone line, only the data channel of local area network (LAN) still keeps connecting, and this moment, this interface was not with identical with the network equipment of feed.If opposite load current thinks that terminal equipment meets power reguirements in suitable scope, power switch and phone control switch are opened, to the terminal equipment feed with phone is provided.
Before load identifies, directly provide long-time big electric current will burn two resistance on the common network interface card to load, for avoiding this situation occurring, take supply power voltage constant, and the extremely short method of power-on time, during very short power supply, the characteristic of sensing lead is judged its type, if satisfactory load rapidly, will continued power, otherwise to the power supply test again again of next judgement cycle.Accompanying drawing 2 is the theory diagrams according to the hardware controls of this thinking design.The contrast block diagram illustrations relies on the principle of data terminal type decided feed below.
Narrow-pulse generator periodically sends burst pulse, this narrow pulse signal Drive and Control Circuit is given power terminal equipment, in during very short power supply, current sampling circuit is obtained load current characteristic, and window comparator compares differentiation to electric current, as meets condition of power supply, window comparator output useful signal, keep continued power, telephone switch is also opened simultaneously, and feed, telephone network data can be transmitted simultaneously; If window comparator does not relatively meet condition of power supply to sample rate current; window comparator just can not exported useful signal; after then the burst pulse test voltage is finished; power supply to load has just stopped; just send the test burst pulse again up to next test period; and the burst pulse duty ratio of test is very little; average power is very little; can the resistance on the common network interface card not caused damage; so just reached the purpose of protecting common network interface card load; thereby realized the power supply of dependence data terminal type, thereby also realized the compatibility of this interface multiple network equipment.
The example of realizing according to the present invention has the terminal equipment with this interface.Realization one preferred embodiment according to the present invention has the switch with this interface.
ADSL (Asymmetric Digital Subscriber Line) ADSL DESKTOP INFORMATION telephone system: native system is suitable for small-scale working environment, and system is by being connected to internet Internet, and phonological component utilizes existing P STN telephone line.System's annexation is seen accompanying drawing 3.
Adopt ADSL to insert and realize data function, and utilize binding or PSTN circuit transferring voice independently.By the route ADSL Modem, with data in switch by the present invention design, the pstn telephone circuit is also received in this switch simultaneously, switch is incorporated into power supply, data and voice group on each RJ45 port, by the RJ45 netting twine, be connected with each DESKTOP INFORMATION phone, the DESKTOP INFORMATION phone only needs such netting twine, just can provide common voice service and Internet service, the supply socket, RJ11 and the RJ45 interface that no longer need independent power supply adaptor and separate.Three interfaces are lumped together, make the connected mode of information telephone and plain old telephone be as good as, meet use habit.Exchange interface part block diagram by the present invention's design is seen Fig. 4.
Claims (2)
1, a kind of RJ45 interface with voice signal transmission and feed protection mechanism, described interface comprises Ethernet interface line RJ45 netting twine and transformation coupler, it is characterized in that: the 4 pairs of twisted-pair feeders, 8 lines just in the RJ45 netting twine, 2 pairs of twisted-pair feeders are defined as data/telephone wire respectively, other 2 pairs of twisted-pair feeders are defined as the power positive end line respectively, the power-end line, the anode of two line parallel transmission of power positive end power supply, the negative terminal of two line parallel transmission of power supply negative terminal power supply, two lines in data/telephone wire link to each other with transformation coupler two ends respectively, the centre cap of transformation coupler links to each other with telephone wire, two lines in addition in data/telephone wire link to each other with another transformation coupler two ends respectively, and the centre cap of this transformation coupler links to each other with telephone wire; After connecting a resistance respectively, 4 pairs of twisted-pair feeders of Ethernet card RJ45 are connected in parallel.
2, RJ45 interface according to claim 1 is characterized in that: this interface utilizes the constant voltage power supply in the utmost point short time, and the curtage situation of test load just powers to the load when load current or voltage are in certain scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101113390A CN100502409C (en) | 2003-11-06 | 2003-11-06 | A data interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101113390A CN100502409C (en) | 2003-11-06 | 2003-11-06 | A data interface |
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| Publication Number | Publication Date |
|---|---|
| CN1543165A CN1543165A (en) | 2004-11-03 |
| CN100502409C true CN100502409C (en) | 2009-06-17 |
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| CNB2003101113390A Expired - Fee Related CN100502409C (en) | 2003-11-06 | 2003-11-06 | A data interface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656264A (en) * | 2013-12-31 | 2017-05-10 | 中兴通讯股份有限公司 | Service separation processing methods, apparatuses and system, distributed point unit (DPU) and network adapter |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7773497B2 (en) * | 2005-05-09 | 2010-08-10 | Adaptive Spectrum And Signal Alignment, Inc. | Phantom use in DSL systems |
| CN106887731A (en) * | 2016-04-30 | 2017-06-23 | 佘培嘉 | A kind of new wall network interface |
| CN105955903A (en) * | 2016-05-03 | 2016-09-21 | 佘培嘉 | Novel network interface adapter and matched system design method thereof |
| CN110995467B (en) * | 2019-11-07 | 2022-12-13 | 锐捷网络股份有限公司 | Method for remotely managing non-network management switch and first switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010025560A (en) * | 2001-01-05 | 2001-04-06 | 김정렬 | Ethernet and telephone interface device |
| EP1100231A1 (en) * | 1999-10-25 | 2001-05-16 | Schneider Automation | Device and connection box for a local network |
| CN2540705Y (en) * | 2002-06-03 | 2003-03-19 | 成都天缘信息产业发展有限公司 | 75 ohm coaxiale cable transceiver |
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2003
- 2003-11-06 CN CNB2003101113390A patent/CN100502409C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1100231A1 (en) * | 1999-10-25 | 2001-05-16 | Schneider Automation | Device and connection box for a local network |
| KR20010025560A (en) * | 2001-01-05 | 2001-04-06 | 김정렬 | Ethernet and telephone interface device |
| CN2540705Y (en) * | 2002-06-03 | 2003-03-19 | 成都天缘信息产业发展有限公司 | 75 ohm coaxiale cable transceiver |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656264A (en) * | 2013-12-31 | 2017-05-10 | 中兴通讯股份有限公司 | Service separation processing methods, apparatuses and system, distributed point unit (DPU) and network adapter |
| CN106656264B (en) * | 2013-12-31 | 2021-01-22 | 中兴通讯股份有限公司 | Service isolation processing method, device and system, DPU and network adapter |
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| CN1543165A (en) | 2004-11-03 |
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Owner name: JINGLUN ELECTRONICS CO., LTD. Free format text: FORMER OWNER: WUHAN JINGLUN ELECTRONIC CO., LTD. Effective date: 20070914 |
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Effective date of registration: 20070914 Address after: 430223 No. 70, Optics Valley Avenue, East Lake Development Zone, Wuhan, Hubei Applicant after: Routon Electronic Co., Ltd. Address before: 430223 Temple Hill District, East Lake Development Zone, Hubei, Wuhan Applicant before: Wuhan Jinglun Electronic Co. Ltd. |
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