CN101990001A - Twisted-pair interface expansion device and method - Google Patents
Twisted-pair interface expansion device and method Download PDFInfo
- Publication number
- CN101990001A CN101990001A CN2009100902739A CN200910090273A CN101990001A CN 101990001 A CN101990001 A CN 101990001A CN 2009100902739 A CN2009100902739 A CN 2009100902739A CN 200910090273 A CN200910090273 A CN 200910090273A CN 101990001 A CN101990001 A CN 101990001A
- Authority
- CN
- China
- Prior art keywords
- signal
- lre
- interface
- twisted
- pair feeder
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a twisted-pair interface expansion device and a twisted-pair interface expansion method. The device comprises a high-pass filer and an Ethernet network data conversion module, wherein the high-pass filter is used for performing high-pass filtering on voice data mixed signals output from a twisted pair interface to obtain a long range Ethernet (LRE) signal, outputting the LRE signal from an LRE interface, performing high-pass filtering on the LRE signal output from the LER interface, attenuating the low-frequency part of the LRE signal and transmitting the filtered LRE signal to the twisted-pair interface; and the Ethernet network conversion module is used for converting the LRE signal output from the LRE interface into a standard Ethernet signal, outputting the standard Ethernet signal from a standard Ethernet interface, converting the standard Ethernet signal output from the standard Ethernet interface into the LRE signal and outputting the LRE signal from the LRE interface. The device and the method realize that the twisted-pair interface is expanded into the standard Ethernet interface.
Description
Technical field
The present invention relates to network communications technology field, be specifically related to twisted-pair feeder interface extending device and method.
Background technology
Existing telephone wire panel is exactly a connector, and the telephone wire of registering one's residence and the connector on the panel are connected together, and the user just can directly make a phone call after the RJ11 connector with telephone set inserts panel.It is man-to-man entering the outlet of the telephone wire logarithm of panel and panel, i.e. corresponding RJ11 port of pair of telephone lines, two pairs of corresponding two RJ11 ports of telephone wire.
Long Range Ethernet (LRE, Long Range Ethernet) is a kind of comprehensive end-to-end high speed access solution, LRE can allow the user pass through the existing telephone circuit and ethernet line obtains high-bandwidth service, therefore the application of having widened ethernet technology widely.The LRE technology can encapsulate Ethernet grouping, and in the enterprising line stabilization of telephone wire ground high-speed transfer, thereby the transmission range of Ethernet is increased to present 500 meters from traditional 100 meters.The service supplier that significantly rises on transmission range has created important business opportunity like this, allows them can utilize economical and effective, powerful ethernet technology to provide at a high speed and inserts.
Wherein, the LRE physical layer interface adopts different coding methods at different twisted-pair feeder logarithms, has adopted following two kinds of methods, and a kind of is to adopt 3B2T transition coding and PAM-3 line coding method, on 1 pair/2 pairs twisted-pair feeder base band media, with the 10M/100Mbps speed rates; Another kind of 8B1Q4 transition coding and the PAM5 line coding method of adopting is on 4 pairs of twisted-pair feeder base band media, with the 100Mbps speed rates.No matter adopt which kind of coding, physical layer interface all should use blender and Canceller to realize the full duplex baseband transmission of signal at each on to twisted-pair feeder.Also adopt different circuit code element clock frequencies for above-mentioned three kinds of mode of operations, for example the clock that needs during to line at 10Mbps-1 is 6.67MHz+50ppm; The clock that needs during to line at 100Mbps-2 is 33.33MHz+50ppm; The clock that needs during to line at 100Mbps-4 is 12.5MHz+50ppm.
Because 10Mbps-1 can transmit by big logarithm twisted pair telephone ray mode, and therefore distance needs the LRE signal to transmit jointly with analog telephone signal above 500 meters in actual applications.
Though above-mentioned 10Mbps-1 is higher than common simulation telephone signal (being not more than 4KHz) far away to the circuit code element clock 6.67MHz of ray mode LRE, but the spectral range that the LRE signal takies is very wide, has comprised the frequency band range (about 300～3400Hz) of analog telephone signal fully.And when LRE signal and analog telephone signal when transmitting jointly with a pair of telephone wire, though the LRE physical chip can be eliminated the influence of the common simulation telephone signal be positioned at low-frequency range by signal processing technology, common analog telephone but can't be eliminated the interference with the overlapping LRE signal of analog telephone signal.Simultaneously, in actual applications, existing the LRE conversion of signals is the demand of standard ethernet signal, promptly wishes to expand the standard ethernet interface from the twisted-pair feeder interface.In addition, consider easy to usely, the user wishes the panel of existing transportation simulator speech, can transmit the Ethernet data business simultaneously.
Summary of the invention
The invention provides twisted-pair feeder interface extending device and method, to expand the standard ethernet interface from the twisted-pair feeder interface.
Technical scheme of the present invention is achieved in that
A kind of twisted-pair feeder interface extending device, this device comprises:
High pass filter carries out high-pass filtering to the voice data mixed signal of twisted-pair feeder interface output, obtains Long Range Ethernet LRE signal, and this LRE signal is exported by the LRE interface; LRE signal to LRE interface output carries out high-pass filtering, and the low frequency part of LRE signal is decayed, and filtered LRE signal is outputed to the twisted-pair feeder interface;
The Ethernet data modular converter, the LRE conversion of signals that the LRE interface is exported becomes the standard ethernet signal, and this standard ethernet signal is exported by the standard ethernet interface; The standard ethernet conversion of signals of standard ethernet interface output is become the LRE signal, this LRE signal is exported by the LRE interface.
This device further comprises:
Low pass filter carries out low-pass filtering to the voice data mixed signal of twisted-pair feeder interface output, obtains voice signal, and this voice signal is exported by simulative telephone interface; Voice signal to simulative telephone interface output carries out low-pass filtering, and filtered voice signal is outputed to the twisted-pair feeder interface.
The cut-off frequency of described high pass filter is 20KHz, and described high pass filter to the attenuation of 0 to 20KHz signal greater than 45dB.
Described high pass filter is a higher order filter.
Described high pass filter, low pass filter and Ethernet data modular converter are positioned at same panel;
Perhaps, described high pass filter and Ethernet data modular converter are positioned at ethernet terminal;
Perhaps, described low pass filter is positioned at telephone plant.
The connector of described standard ethernet interface is the RJ45 female seat.
A kind of twisted-pair feeder interface extended method, this method comprises:
Voice data mixed signal to the output of twisted-pair feeder interface is carried out high-pass filtering, removes the low frequency part of mixed signal, obtains the LRE signal, is the standard ethernet signal with the LRE conversion of signals, and this standard ethernet signal is exported by the standard ethernet interface;
The standard ethernet conversion of signals of standard ethernet interface output is become the LRE signal, the LRE signal is carried out high-pass filtering, the low frequency part of LRE signal is decayed, filtered LRE signal is outputed to the twisted-pair feeder interface.
Described method further comprises:
Voice data mixed signal to the output of twisted-pair feeder interface is carried out low-pass filtering, obtains voice signal, and this voice signal is exported by simulative telephone interface.
Described voice data mixed signal to the output of twisted-pair feeder interface is carried out high-pass filtering and is comprised: mixed signal 0 to 20KHz is partly decayed, and attenuation is greater than 45dB.
Described voice data mixed signal to the output of twisted-pair feeder interface is carried out high-pass filtering and is comprised:
Adopt higher order high pass filters that the voice data mixed signal of twisted-pair feeder interface output is carried out high-pass filtering.
Compared with prior art, among the present invention, adopt high pass filter that the voice data mixed signal of twisted-pair feeder interface output is carried out high-pass filtering, obtain the LRE signal, this LRE signal is outputed to the Ethernet data modular converter by the LRE interface, the Ethernet data modular converter becomes the standard ethernet signal with the LRE conversion of signals of LRE interface output, and this standard ethernet signal is exported by the standard ethernet interface; Simultaneously, the Ethernet data modular converter becomes the LRE signal with the standard ethernet conversion of signals of standard ethernet interface output, from the output of LRE interface, high pass filter carries out high-pass filtering to the LRE signal of LRE interface output, and filtered LRE signal is outputed to the twisted-pair feeder interface with the LRE signal.The present invention has realized expanding the standard ethernet interface from the twisted-pair feeder interface.
In addition, in the embodiment of the invention, by high pass filter, low pass filter and Ethernet data modular converter are put into same panel, existing the panel of supporting analog telephone is transformed into the panel of supporting the professional and analog telephone of Ethernet data simultaneously, made things convenient for the user.
Description of drawings
The structure chart of the twisted-pair feeder interface extending device that Fig. 1 provides for the embodiment of the invention;
The circuit diagram of a kind of higher order high pass filters that Fig. 2 provides for the embodiment of the invention;
The flow chart of the twisted-pair feeder interface extended method that Fig. 3 provides for the embodiment of the invention.
Embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
The structure chart of the twisted-pair feeder interface extending device that Fig. 1 provides for the embodiment of the invention, as shown in Figure 1, it mainly comprises: low pass filter 11, high pass filter 12 and Ethernet data modular converter 13, wherein:
Low pass filter 11: the voice data mixed signal that transmits by the twisted-pair feeder interface is carried out low-pass filtering, remove the HFS in the mixed signal, the voice signal that filtering is obtained outputs to simulative telephone interface; The voice signal that transmits by simulative telephone interface is carried out low-pass filtering, remove the high-frequency noise in the voice signal, the voice signal that filtering is obtained outputs to the twisted-pair feeder interface.
Simulative telephone interface is promptly: plain old telephone service (POTS, Plain Old Telephone Service) interface or public switch telephone network (PSTN, Public Switched Telephone Network) interface.
Because the frequency of LRE signal is higher, therefore, low pass filter 11 can adopt with second generation very-high-bit-rate digital subscriber loop (VDSL, Very-high-bit-rate Digital Subscriber loop) separator in identical low pass filter, be higher order filter.
High pass filter 12: the voice data mixed signal that transmits by the twisted-pair feeder interface is carried out high-pass filtering, remove the low frequency part in the mixed signal, the LRE signal that filtering is obtained outputs to Ethernet data modular converter 13 by the LRE interface; The LRE signal that transmits by the LRE interface is carried out high-pass filtering, the low frequency part in the LRE signal is decayed, the LRE signal that filtering is obtained outputs to the twisted-pair feeder interface.
Ethernet data modular converter 13: will become the standard ethernet signal by the LRE conversion of signals that the LRE interface transmits, the standard ethernet signal is exported by the standard ethernet interface; To become the LRE signal by the standard ethernet conversion of signals that the standard ethernet interface transmits, this LRE signal will be exported by the LRE interface.
The LRE interface is two line interfaces, and the standard ethernet interface is 4 line interfaces.
Device shown in Figure 1 can be positioned at a panel, this panel can replace existing wall embedded type analog telephone panel, the size of this panel can be identical with existing analog telephone panel, and the mechanical installation mode of this panel also can be identical with existing analog telephone panel, promptly adopts the hold-down screw mode to install.The input interface of this panel is identical with existing analog telephone panel, is the twisted-pair feeder interface, and the incoming line of panel is a pair of or a pair of above telephone wire, and the input interface connector is female mouthful of RJ11.This panel has two output interfaces, and one identical with existing analog telephone panel, is simulative telephone interface, and interface connector is the RJ11 port; Another is the standard ethernet interface, and interface connector is the RJ45 connector female seat.
In actual applications, low pass filter 11 shown in Figure 1 also can be positioned at telephone plant, and high pass filter and/or Ethernet data modular converter 13 also can be positioned at ethernet terminal.
Among the present invention, the cut-off frequency of low pass filter 11 needs only and guarantees that voice signal can normally pass through, as: the frequency as if voice signal is 4KHz, then the desirable 6KHz of the cut-off frequency of low pass filter 11.As long as the cut-off frequency of high pass filter 12 guarantees low frequency signal is enough decayed, as: desirable 20KHz.Preferably, the decay of the signal between 12 couples of 0-20KHz of high pass filter can 20～50KHz be a transition band greater than 45dB.In actual applications, as long as satisfy: the cut-off frequency of high pass filter 12 is higher than the cut-off frequency of low pass filter 11.
In actual applications, for the low frequency part to the LRE signal enough decays, low pass filter 11 and/or high pass filter 12 can adopt higher order filter.The circuit diagram of a kind of higher order high pass filters that Fig. 2 provides for the embodiment of the invention, wherein, C3, C4 are that electric capacity, L3 are inductance.
The employing device as shown in Figure 1 that Fig. 3 provides for the embodiment of the invention is expanded the method flow diagram of twisted-pair feeder interface, and as shown in Figure 3, its concrete steps are as follows:
Step 301: low pass filter receives the voice data mixed signal from the twisted-pair feeder interface, and this mixed signal is carried out low-pass filtering, removes the HFS of mixed signal, obtains voice signal, and voice signal is exported by simulative telephone interface.
Step 302: high pass filter receives the voice data mixed signal from the twisted-pair feeder interface, and this mixed signal is carried out high-pass filtering, removes the low frequency part of mixed signal, obtains the LRE signal, and the LRE signal is exported by the LRE interface.
Step 303: the Ethernet data modular converter receives the LRE signal from the LRE interface, is the standard ethernet signal with this LRE conversion of signals, and this standard ethernet signal is exported by the standard ethernet interface.
Step 304: low pass filter receives the voice signal from simulative telephone interface, and this voice signal is carried out low-pass filtering, removes the high-frequency noise in the voice signal, and filtered voice signal is outputed to the twisted-pair feeder interface.
Step 305: the Ethernet data modular converter receives the standard ethernet signal from the standard ethernet interface, and this standard ethernet conversion of signals is become the LRE signal, and this LRE signal is exported by the LRE interface.
Step 306: high pass filter receives the LRE signal from the LRE interface, and this LRE signal is carried out high-pass filtering, and the low frequency part of LRE signal is decayed, and filtered LRE signal is outputed to the twisted-pair feeder interface.
The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a twisted-pair feeder interface extending device is characterized in that, this device comprises:
High pass filter carries out high-pass filtering to the voice data mixed signal of twisted-pair feeder interface output, obtains Long Range Ethernet LRE signal, and this LRE signal is exported by the LRE interface; LRE signal to LRE interface output carries out high-pass filtering, and the low frequency part of LRE signal is decayed, and filtered LRE signal is outputed to the twisted-pair feeder interface;
The Ethernet data modular converter, the LRE conversion of signals that the LRE interface is exported becomes the standard ethernet signal, and this standard ethernet signal is exported by the standard ethernet interface; The standard ethernet conversion of signals of standard ethernet interface output is become the LRE signal, this LRE signal is exported by the LRE interface.
2. device as claimed in claim 1 is characterized in that, this device further comprises:
Low pass filter carries out low-pass filtering to the voice data mixed signal of twisted-pair feeder interface output, obtains voice signal, and this voice signal is exported by simulative telephone interface; Voice signal to simulative telephone interface output carries out low-pass filtering, and filtered voice signal is outputed to the twisted-pair feeder interface.
3. device as claimed in claim 1 is characterized in that, the cut-off frequency of described high pass filter is 20KHz, and described high pass filter to the attenuation of 0 to 20KHz signal greater than 45dB.
4. device as claimed in claim 1 is characterized in that, described high pass filter is a higher order filter.
5. device as claimed in claim 2 is characterized in that, described high pass filter, low pass filter and Ethernet data modular converter are positioned at same panel;
Perhaps, described high pass filter and Ethernet data modular converter are positioned at ethernet terminal;
Perhaps, described low pass filter is positioned at telephone plant.
6. device as claimed in claim 1 is characterized in that, the connector of described standard ethernet interface is the RJ45 female seat.
7. twisted-pair feeder interface extended method is characterized in that this method comprises:
Voice data mixed signal to the output of twisted-pair feeder interface is carried out high-pass filtering, removes the low frequency part of mixed signal, obtains the LRE signal, is the standard ethernet signal with the LRE conversion of signals, and this standard ethernet signal is exported by the standard ethernet interface;
The standard ethernet conversion of signals of standard ethernet interface output is become the LRE signal, the LRE signal is carried out high-pass filtering, the low frequency part of LRE signal is decayed, filtered LRE signal is outputed to the twisted-pair feeder interface.
8. method as claimed in claim 7 is characterized in that, described method further comprises:
Voice data mixed signal to the output of twisted-pair feeder interface is carried out low-pass filtering, obtains voice signal, and this voice signal is exported by simulative telephone interface.
9. method as claimed in claim 7 is characterized in that, described voice data mixed signal to the output of twisted-pair feeder interface is carried out high-pass filtering and comprised: mixed signal 0 to 20KHz is partly decayed, and attenuation is greater than 45dB.
10. method as claimed in claim 7 is characterized in that, described voice data mixed signal to the output of twisted-pair feeder interface is carried out high-pass filtering and comprised:
Adopt higher order high pass filters that the voice data mixed signal of twisted-pair feeder interface output is carried out high-pass filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100902739A CN101990001A (en) | 2009-08-04 | 2009-08-04 | Twisted-pair interface expansion device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100902739A CN101990001A (en) | 2009-08-04 | 2009-08-04 | Twisted-pair interface expansion device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101990001A true CN101990001A (en) | 2011-03-23 |
Family
ID=43746341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100902739A Pending CN101990001A (en) | 2009-08-04 | 2009-08-04 | Twisted-pair interface expansion device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101990001A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975559A (en) * | 2014-03-14 | 2014-08-06 | 华为技术有限公司 | Data transmission method, device and system |
| WO2017032163A1 (en) * | 2015-08-26 | 2017-03-02 | 中兴通讯股份有限公司 | Method and apparatus for multiplexing telephone line and network cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932839Y (en) * | 2006-02-28 | 2007-08-08 | 北京索安视讯科技有限公司 | Ethernet long-distance transceiver based on twisted-pair transmission |
| CN101087338A (en) * | 2007-08-07 | 2007-12-12 | 杭州华三通信技术有限公司 | A common transmission method, system and device of LRE signals and phone signals |
| CN101150470A (en) * | 2006-09-19 | 2008-03-26 | 美国博通公司 | Wired communication method and system |
| US20090080459A1 (en) * | 2007-04-04 | 2009-03-26 | Ozdal Barkan | Long-reach ethernet for 1000BASE-T and 10GBASE-T |
-
2009
- 2009-08-04 CN CN2009100902739A patent/CN101990001A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932839Y (en) * | 2006-02-28 | 2007-08-08 | 北京索安视讯科技有限公司 | Ethernet long-distance transceiver based on twisted-pair transmission |
| CN101150470A (en) * | 2006-09-19 | 2008-03-26 | 美国博通公司 | Wired communication method and system |
| US20090080459A1 (en) * | 2007-04-04 | 2009-03-26 | Ozdal Barkan | Long-reach ethernet for 1000BASE-T and 10GBASE-T |
| CN101087338A (en) * | 2007-08-07 | 2007-12-12 | 杭州华三通信技术有限公司 | A common transmission method, system and device of LRE signals and phone signals |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975559A (en) * | 2014-03-14 | 2014-08-06 | 华为技术有限公司 | Data transmission method, device and system |
| WO2017032163A1 (en) * | 2015-08-26 | 2017-03-02 | 中兴通讯股份有限公司 | Method and apparatus for multiplexing telephone line and network cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1251554C (en) | Telephone communication system over single telephone line | |
| CN1430837A (en) | Telephone outlet and system for local area network over telephone lines | |
| AU7116000A (en) | Apparatus and method of coupling home network signals between an analog phone line and a digital bus | |
| US6522728B1 (en) | Apparatus and method of implementing a universal home network on a customer premises ISDN bus | |
| CN101431347A (en) | Wireless distributed equipment and system and signal transmission method | |
| CN101087338B (en) | A common transmission method, system and device of LRE signals and phone signals | |
| CN1731788B (en) | Communication equipment interface and interface converter using the interface | |
| CN1159860C (en) | Line termination device for a telephone subscriber line | |
| CN101990001A (en) | Twisted-pair interface expansion device and method | |
| CN201349215Y (en) | Power line modem | |
| CN201114307Y (en) | Network telephone integration accomplishing device | |
| CN1529973A (en) | Central office interface techniques for digital subscriber lines | |
| GB2386286A (en) | Combined VoDSL and POTS system with integrated access device/VoDSL to POTS converter and telephones connected to common line via isolating filters | |
| CN203313216U (en) | Multi-medium internet gateway device | |
| CN205356499U (en) | Dsl separator | |
| CN202145651U (en) | Telephone set with WIFI routing function | |
| CN102118528A (en) | Device and method for separating long reach Ethernet (LRE) voice | |
| EP1284088B1 (en) | Termination device for a telephone line | |
| CN202334679U (en) | Voice interface of remote data and audio transmission device | |
| KR20010018110A (en) | Device for LAN Data Transmission | |
| CN201854338U (en) | Voice splitting module for asymmetric digital subscriber line (ADSL) and voice splitter | |
| CN101436880B (en) | Method and apparatus for sending and receiving signal, and signal transmission system | |
| CN210350321U (en) | Multipurpose adapter for network cable and telephone line | |
| CN2402063Y (en) | Modem pool | |
| CN201307881Y (en) | New type voice separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110323 |