CN101252373A - Local terminal equipment, signal separator and communicating system - Google Patents

Local terminal equipment, signal separator and communicating system Download PDF

Info

Publication number
CN101252373A
CN101252373A CNA2007100733854A CN200710073385A CN101252373A CN 101252373 A CN101252373 A CN 101252373A CN A2007100733854 A CNA2007100733854 A CN A2007100733854A CN 200710073385 A CN200710073385 A CN 200710073385A CN 101252373 A CN101252373 A CN 101252373A
Authority
CN
China
Prior art keywords
signal
filter
local side
side apparatus
communication system
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.)
Granted
Application number
CNA2007100733854A
Other languages
Chinese (zh)
Other versions
CN101252373B (en
Inventor
王丽
李飞
郭晓凡
张焱
梁勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN2007100733854A priority Critical patent/CN101252373B/en
Publication of CN101252373A publication Critical patent/CN101252373A/en
Application granted granted Critical
Publication of CN101252373B publication Critical patent/CN101252373B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Telephonic Communication Services (AREA)

Abstract

Disclosed is a communication system which comprises at least two local terminal devices and at least two filters which operate in different frequency ranges; the filters are respectively connected with the local terminal devices to extract the signals in the working frequency range of the local terminal devices among the signals needed to be received by the local terminal devices; the extracted signals are transmitted to the local terminal devices by the filters. The invention also provides a local terminal device and a signal separator. The communication system, the local terminal device and the signal separator extract the corresponding signals needed by the user terminal device or the local terminal device from the signals needed to be received by the device; the simultaneous support of different services is realized; meanwhile, the cross talk mutually generated among the different frequency range services is avoided effectively.

Description

A kind of local side apparatus, demultiplexer and communication system thereof
Technical field
The present invention relates to a kind of communication system, relate in particular to a kind of communication system of supporting multiple business.
Background technology
Providing more cheap, quicker and high-speed data communication more fully to the consumer, is the eternal active demand of telecommunications service provider.Concerning the service supplier, the user uses many different high speed data communication services, makes thing become complicated.Be generally used for sending the certain methods of data at present, for example have, integrated services digital network (Integrated Service Digital Network, ISDN) professional, digital subscriber line (Digital Subscriber Line, DSL) business etc.These methods also are divided into many types, make thing become more complicated.For example, the DSL series of high-speed data communication comprises the miscellaneous service main frame, is designated as xDSL usually, here a series of DSL business of " x " representative.The xDSL business comprises asymmetrical DSL (Asymmetrical Digital Subscriber Loop at present, ADSL), rate adaptation DSL (Rate Adaptive Digital Subscriber Line, RADSL), high bit rate DSL (High-bit-rate Digital Subscriber Line, HDSL), Very High Speed DSL (Veryhigh-data-rate Digital Subscriber Line, VDSL) and symmetrical DSL (Symmetrical DigitalSubscriber Loop, SDSL) etc.In addition, there is the consumer of quite big percentage in data communication, still to use traditional telephone service (Plain old telephone service, POTS) circuit.Thereby service supplier's telecommunication system must be supported all kinds of widely different telecommunication businesses.At present, telecommunication system for example provides various services with merging various circuit and device.
At present, in the telecommunication service field, operator mostly passes through local cable, provide broad band telecommunication service and arrowband telecommunication service simultaneously to the user, as business such as ADSL, POTS, ISDN, VDSL1, VDSL2, ADSLover POTS, ADSL over ISDN, VDSL2 over POTS, VDSL over ISDN, such is applied in quite general that home and overseas has, and what have is progressively open-minded.
In the practical application, the a plurality of users that coexist in a bundle cable may open multiple different business, and a user also may open multiple business, and these professional frequency bands that use are different, so cross talk effects can be very big, severe patient can cause partial service to carry out.
Summary of the invention
In view of this, be necessary to provide a kind of communication system, can support multiple business.
In addition, also need to provide a kind of local side apparatus, can support multiple business.
In addition, also need to provide a kind of ustomer premises access equipment, can support multiple business.
In addition, also need to provide a kind of demultiplexer, the signal of separable a plurality of different frequency ranges.
A kind of communication system comprises at least two local side apparatus and at least two filters.The working frequency range difference of described local side apparatus.At least two filters link to each other with described local side apparatus respectively, are used to extract the signal in the local side apparatus working frequency range described in the signal that described local side apparatus need receive, and the signal that extracts is sent to described local side apparatus.
A kind of communication system comprises at least two ustomer premises access equipments and at least two filters.The working frequency range difference of described ustomer premises access equipment.Described at least two filters link to each other with described user side respectively, are used to extract the signal in the ustomer premises access equipment working frequency range described in the signal that described user side need receive, and the signal that is extracted is sent to described ustomer premises access equipment.
A kind of local side apparatus comprises at least two Service Processing Modules and at least two filters.The working frequency range difference of described Service Processing Module.Described filter links to each other with Service Processing Module respectively, is used for extracting the interior signal of signal Service Processing Module working frequency range that Service Processing Module need receive, and the signal that is extracted is sent to Service Processing Module.
A kind of demultiplexer,, comprise at least two filters, be used to filter the signal of different frequency range.
Above-mentioned communication system, local side apparatus and demultiplexer utilize the mode of a plurality of filter combinations to extract corresponding ustomer premises access equipment or the required signal of local side apparatus from the signal that need receive, and what produce mutually between the various different frequency range business of effectively avoiding when realizing supporting multiple different business simultaneously crosstalks.
Description of drawings
Figure 1 shows that the Organization Chart of communication system in the first embodiment of the invention.
Figure 2 shows that the Organization Chart of communication system in the second embodiment of the invention.
Figure 3 shows that the Organization Chart of communication system in the third embodiment of the invention.
Figure 4 shows that the Organization Chart of communication system in the four embodiment of the invention.
Figure 5 shows that the module map of demultiplexer in the embodiment of the present invention.
Embodiment
Consult Fig. 1, be depicted as the Organization Chart of communication system 10 in the first embodiment of the invention.
Communication system 10 comprises first local side apparatus 101, second local side apparatus 102, first filter 111, second filter 112, first ustomer premises access equipment 131, second ustomer premises access equipment 132, the 3rd filter 141, the 4th filter 142 and two subscriber's lines 180.
Subscriber's line 180 is used to connect local side side (Central Office, equipment CO) and user side (Customer Premises Equipment, equipment CPE).In the present embodiment, two subscriber's lines 180 are twisted-pair feeder, and in other embodiments, subscriber's line 180 also can be other any circuits.
First local side apparatus 101 and second local side apparatus 102 are respectively applied for and support two kinds of local side business that work in different frequency range, that is, first local side apparatus 101 is different with the working frequency range of second local side apparatus 102.In the present embodiment, first local side apparatus 101 be used to support asymmetrical DSL (AsymmetricalDigital Subscriber Loop, ADSL).Second local side apparatus 102 is used to support Very-high-speed Digital Subscriber Line road (Very high-data-rate Digital Subscriber Line, VDSL) business.In other embodiments, first local side apparatus 101 and second local side apparatus 102 also can support RADSL (Rate Adaptive Digital Subscriber Line, RADSL) professional, high bitrate digital subscriber line road (High-bit-rate Digital Subscriber Line, HDSL) professional and Symmetric Digital Subscriber Line (Symmetrical Digital Subscriber Loop, SDSL) any two kinds of different business in the business, i.e. any two kinds in the xDSL business.
First filter 111 electrically connects with a subscriber's line 180 and first local side apparatus 101 respectively, be used to receive the signal that subscriber's line 180 is transmitted, and from received signal, extract signal in first local side apparatus, 101 working frequency range, then, the signal that is extracted is sent to first local side apparatus 101.In the present embodiment, first filter 111 is used for extracting the ADSL signal of the signal that this subscriber's line 180 transmitted, and this ADSL signal is sent to first local side apparatus 101, and first filter 111 can be the low pass bandpass filter of a simulation, also can be the band pass filter or the high pass filter of a simulation.
Second filter 112 is another subscriber's line 180 and 102 electric connections of second local side apparatus respectively, be used to receive the signal that this another subscriber's line 180 is transmitted, and from received signal, extract signal in the second local side equipment work frequency range, then the signal that is extracted is sent to second local side apparatus 102.In the present embodiment, second filter 112 is used for extracting the VDSL signal of the signal that this another subscriber's line 180 transmitted, and this VDSL signal is sent to second local side apparatus 102, and second filter 112 can be the low pass filter of a simulation, also can be the band pass filter or the high pass filter of a simulation.
First ustomer premises access equipment 131 and second ustomer premises access equipment 132 are respectively applied for the user side business of handling different frequency range, and promptly first ustomer premises access equipment 131 is different with the working frequency range of second ustomer premises access equipment 132.In the present embodiment, first ustomer premises access equipment 131 is used to handle the ADSL business.Second local side apparatus 102 is used to handle the VDSL business.In other embodiments, first ustomer premises access equipment 131 and second ustomer premises access equipment 132 also can be used for handling any two kinds of different business of xDSL business.
The 3rd filter 141 electrically connects the subscriber's line 180 and first ustomer premises access equipment 131 that is connected with first filter 111 respectively.The 3rd filter 141 is used to receive the signal that the subscriber's line 180 that is connected with first filter 111 is transmitted, and extracts the required signal of first ustomer premises access equipment 131 from this signal, then the signal that is extracted is sent to first ustomer premises access equipment 131.In the present embodiment, the 3rd filter 141 is used for extracting the ADSL signal of the signal that subscriber's line 180 transmitted, and this ADSL signal is sent to first ustomer premises access equipment 131, and the 3rd filter 141 can be the low pass filter of a simulation, also can be the band pass filter or the high pass filter of a simulation.In other embodiments, the 3rd filter 141 also can extract the signal of other types, and the signal type that it extracted is corresponding with first ustomer premises access equipment, 131 handled business.
The 4th filter 142 electrically connects the subscriber's line 180 and second ustomer premises access equipment 132 that is connected with second filter 112 respectively.The 4th filter 142 is used to receive the signal that the subscriber's line 180 that is connected with second filter 112 is transmitted, and extracts the required signal of second ustomer premises access equipment 132 from this signal, then, the signal that is extracted is sent to second ustomer premises access equipment 132.In the present embodiment, the 4th filter is used for extracting the VDSL signal of the signal that subscriber's line 180 transmitted, and this VDSL signal is sent to second ustomer premises access equipment 132, and the 4th filter 142 can be the low pass filter of a simulation, also can be the band pass filter or the high pass filter of a simulation.In other embodiments, the 4th filter also can extract the signal of other types, and the signal type that it extracted is corresponding with second ustomer premises access equipment, 132 handled business.
In other embodiments, first local side apparatus 101 and second local side apparatus 102 also can by subscriber's line 180 and first ustomer premises access equipment 131 and second ustomer premises access equipment 132 between transmission signals.
Consult Fig. 2, be depicted as the Organization Chart of communication system 10 ' in the second embodiment of the invention.
Communication system 10 ' comprises CO side apparatus, a N subscriber's line 180 and cpe side equipment.Subscriber's line 180 is used to connect CO side apparatus and cpe side equipment.
The CO side apparatus comprises first local side apparatus 101 ', second local side apparatus 102 ' ... N local side apparatus 10N ', first game end filter 111 ', second game's end filter 112 ' ... and N local side filter 11N ', wherein N is a natural number.Described local side apparatus is respectively applied for the business that supports multiple different frequency range, for example ADSL business, VDSL business, RADSL business, HDSL business and SDSL business etc., i.e. the working frequency range difference of described local side apparatus.Described N local side filter N local side apparatus and N subscriber's line 180 electric connections respectively are used for extracting the corresponding required signal of local side apparatus of signal that subscriber's line 180 is transmitted, and the signal that is extracted are sent to corresponding ustomer premises access equipment.In the present embodiment, the local side filter can be the low pass filter of simulation, also can be the band pass filter or the high pass filter of simulation.
Cpe side equipment comprises first ustomer premises access equipment 131 ', second ustomer premises access equipment 132 ' ... the N ustomer premises access equipment 13N ' and the first user side filter 141 ', the second user side filter 142 ' ... M user side filter 14M ', wherein, M is a natural number, and equates with N.Described M user side filter electrically connects N subscriber's line 180 and N ustomer premises access equipment respectively, with extracting the corresponding required signal of ustomer premises access equipment in the signal that subscriber's line 180 transmitted, and the signal that is extracted is sent to corresponding ustomer premises access equipment.In the present embodiment, user side filter extraction signal comprises ADSL signal, VDSL signal, RADSL signal, HDSL signal and SDSL signal etc., i.e. the working frequency range difference of described ustomer premises access equipment.In the present embodiment, the user side filter can be the low pass filter of simulation, also can be the band pass filter of simulation or the high pass filter of simulation.
In other embodiments, also can pass through subscriber's line 180 transmission signals between N local side apparatus and N ustomer premises access equipment.
Consult Fig. 3, be depicted as the Organization Chart of communication system 20 in the third embodiment of the invention.
Communication system 20 comprises local side apparatus 200, subscriber's line 180, first ustomer premises access equipment 231, second ustomer premises access equipment 232, the 3rd filter 241 and the 4th filter 242.
Local side apparatus 200 connects the 3rd filter 241 and the 4th filter 242 by a subscriber's line 180.The 3rd filter 241 is electrically connected to first ustomer premises access equipment 231.The 4th filter 242 is electrically connected to second ustomer premises access equipment 232.
Local side apparatus 200 comprises first Service Processing Module 2001, second Service Processing Module 2002, first filter 2011 and second filter 2012.
First Service Processing Module 2001 and second Service Processing Module 2002 are respectively applied for the user side business of handling different frequency range, and promptly first Service Processing Module 2001 is different with the working frequency range of second Service Processing Module 2002.In the present embodiment, first Service Processing Module 2001 and second Service Processing Module 2002 can be used for handling any two kinds of business of xDSL business or with the work of the different frequency range in a kind of xDSL business, for example ADSL+ and ADSL2 etc.
First filter 2011 electrically connects the subscriber's line 180 and first Service Processing Modules 2001, is used for the required signal of the signal extraction transmitted from subscriber's line 180 first Service Processing Module 2001.In the present embodiment, first filter 2011 is the low pass filter of simulation.In other embodiments, first filter 2011 also can be the band pass filter or the high pass filter of simulation.
Second filter 2012 electrically connects the subscriber's line 180 and second Service Processing Modules 2002, is used for the required signal of the signal extraction transmitted from subscriber's line 180 second Service Processing Module 2002.In the present embodiment, second filter 2012 is used to take out the VDSL signal for the low pass filter of simulation.
In other embodiments, second filter 2012 also can be the band pass filter or the high pass filter of simulation, and first Service Processing Module 2001 and second Service Processing Module 2002 can be respectively by transmission signals between two subscriber's lines 180 and the ustomer premises access equipment, that is, pass through two subscriber's line 180 transmission signals between local side apparatus 200 and the ustomer premises access equipment.
Consult Fig. 4, be depicted as the Organization Chart of communication system 20 ' in the four embodiment of the invention.
Communication system 20 ' comprises local side apparatus 200 ', subscriber's line 180, first ustomer premises access equipment 231 ', second ustomer premises access equipment 232 ' ... N ustomer premises access equipment 23N ', wherein N is a natural number, and the first user side filter 241 ', the second user side filter 242 ' ... M user side filter 24M ', wherein M is a natural number, and equates with N.
M user side filter electrically connects with N ustomer premises access equipment and subscriber's line 180 respectively, is used for extracting the corresponding required signal of ustomer premises access equipment from the signal that subscriber's line 180 is transmitted.In the present embodiment, the signal that extracted of user side filter comprises various xDSL signals.
Local side apparatus 200 ' comprises first Service Processing Module 2001 ', second Service Processing Module 2002 ' ... N Service Processing Module 200N ', wherein, N is a natural number, and first game end filter 2011 ', second game's end filter 2012 ' ... N local side filter 201N '.Described Service Processing Module is respectively applied for the business of handling different frequency range, and promptly described Service Processing Module can support the different business of the different operating frequency range or the different operating frequency range of same business.In the present embodiment, described Service Processing Module is used to handle the processing of the different frequency range of the professional or a kind of xDSL business of various xDSL, for example ADSL+ and ADSL2 etc.Corresponding with the described Service Processing Module respectively connection of described local side filter, and be electrically connected to subscriber's line 180, be used for extracting the corresponding required signal of local side apparatus from the signal that subscriber's line 180 is transmitted.In the present embodiment, the local side filter is the band pass filter of simulation.
In other embodiments, the local side filter also can be the low pass filter or the high pass filter of simulation, and N Service Processing Module business also can be connected with N subscriber's line 180 respectively, and promptly local side apparatus 200 ' is by transmission signals between N subscriber's line 180 and N the ustomer premises access equipment.
Consult Fig. 5, be depicted as the module map of demultiplexer 300 in the embodiment of the present invention.
Demultiplexer 300 comprises first filter 3001, the second filter 3003...... N filter 300N, and wherein N is a natural number.Demultiplexer 300 can electrically connect subscriber's line (not shown) and at least two ustomer premises access equipments (not shown) or electric connection subscriber's line and at least one local side apparatus (not shown), and the signal that is used for transmitting from subscriber's line extracts corresponding ustomer premises access equipment or the required signal of local side apparatus.In the present embodiment, demultiplexer 300 is used to extract various xDSL signals.
Communication system that embodiment of the present invention provided 10,10 ', 20,20 ' and demultiplexer 300 utilize the mode of a plurality of filter combinations from the signal that subscriber's line 180 is transmitted, to extract corresponding ustomer premises access equipment or the required signal of local side apparatus, promptly realize supporting simultaneously the different frequency range of multiple different business or same business, what produce mutually between the various different frequency range business of effectively avoiding again crosstalks.
In sum, more than be better embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (18)

1. a communication system is characterized in that, comprising:
At least two local side apparatus, the working frequency range difference of described local side apparatus;
At least two filters link to each other with described local side apparatus respectively, are used to extract the signal in the local side apparatus working frequency range described in the signal that described local side apparatus need receive, and the signal that is extracted is sent to described local side apparatus.
2. communication system as claimed in claim 1 is characterized in that, described local side apparatus comprises that at least one is used to handle the local side apparatus of symmetry or asymmetrical digital subscriber business.
3. communication system as claimed in claim 2 is characterized in that described filter comprises at least one band pass filter.
4. communication system as claimed in claim 2 is characterized in that described filter comprises at least one low pass filter.
5. communication system as claimed in claim 1 is characterized in that, described filter is an analog filter.
6. a communication system is characterized in that, comprising:
At least two ustomer premises access equipments, the working frequency range difference of described ustomer premises access equipment;
At least two filters link to each other with described user side respectively, are used to extract the signal in the ustomer premises access equipment working frequency range described in the signal that described user side need receive, and the signal that is extracted is sent to described ustomer premises access equipment.
7. communication system as claimed in claim 6 is characterized in that, described ustomer premises access equipment comprises the ustomer premises access equipment that is used to handle symmetry or asymmetrical digital subscriber business with at least one.
8. communication system as claimed in claim 6 is characterized in that described filter comprises at least one low pass filter or band pass filter.
9. communication system as claimed in claim 8 is characterized in that, described filter is an analog filter.
10. a local side apparatus is characterized in that, comprising:
At least two Service Processing Modules, the working frequency range difference of described Service Processing Module;
At least two filters link to each other with described Service Processing Module respectively, are used to extract the signal in the Service Processing Module working frequency range described in the signal that described Service Processing Module need receive, and the signal that is extracted is sent to described Service Processing Module.
11. local side apparatus as claimed in claim 10 is characterized in that, described Service Processing Module is used to handle different business.
12. local side apparatus as claimed in claim 11 is characterized in that, described Service Processing Module comprises that at least one is used to handle the Service Processing Module of symmetry or asymmetrical digital subscriber business.
13. local side apparatus as claimed in claim 10 is characterized in that, described Service Processing Module is used to handle the business with a kind of different operating frequency range of digital subscriber business.
14. local side apparatus as claimed in claim 10 is characterized in that, described filter comprises at least one band pass filter or low pass filter.
15. communication system as claimed in claim 14 is characterized in that, described filter is an analog filter.
16. a demultiplexer is characterized in that, comprises at least two filters, is used to extract the signal of a different frequency range that subscribers feeder transmitted.
17. demultiplexer as claimed in claim 16, it is characterized in that, described different frequency range signal comprise in asymmetrical digital user loop signal, rate adaptation digital user loop signal, high bit rate digital subscriber loop signal, very-high-bit-rate digital subscriber loop signal and the symmetrical figure user loop signal any one or a plurality of.
18. demultiplexer as claimed in claim 17 is characterized in that, described filter comprises at least one band pass filter or low pass filter.
CN2007100733854A 2007-02-25 2007-02-25 Local terminal equipment, signal separator and communicating system Expired - Fee Related CN101252373B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007100733854A CN101252373B (en) 2007-02-25 2007-02-25 Local terminal equipment, signal separator and communicating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007100733854A CN101252373B (en) 2007-02-25 2007-02-25 Local terminal equipment, signal separator and communicating system

Publications (2)

Publication Number Publication Date
CN101252373A true CN101252373A (en) 2008-08-27
CN101252373B CN101252373B (en) 2011-10-26

Family

ID=39955574

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2007100733854A Expired - Fee Related CN101252373B (en) 2007-02-25 2007-02-25 Local terminal equipment, signal separator and communicating system

Country Status (1)

Country Link
CN (1) CN101252373B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095337A (en) * 2011-10-28 2013-05-08 中兴通讯股份有限公司 Method, device and local side of improving stability of crosstalk elimination

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407684B (en) * 1997-12-23 2001-05-25 Ericsson Austria Ag FILTER ARRANGEMENT
CN100396092C (en) * 2005-02-24 2008-06-18 启碁科技股份有限公司 Wireless signal transmission apparatus capable of transmitting multi-channel data

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103095337A (en) * 2011-10-28 2013-05-08 中兴通讯股份有限公司 Method, device and local side of improving stability of crosstalk elimination
CN103095337B (en) * 2011-10-28 2016-08-03 中兴通讯股份有限公司 Improve and eliminate stability of crosstalk method, device and local side

Also Published As

Publication number Publication date
CN101252373B (en) 2011-10-26

Similar Documents

Publication Publication Date Title
US6272219B1 (en) Access network with an integrated splitter
US6295343B1 (en) Method and apparatus for combining voice line card and xDSL line card functions
US6519253B1 (en) Telecommunication equipment support of ISDN communication lines for high speed data transmission
CN101729699B (en) Separation equipment and method for transmitting voice signal
US7239627B2 (en) Digital subscriber line services
CN101652933A (en) Arrangements in a digital subscriber line system
EP1086575B1 (en) A method for separating narrowband and broadband services on a transmission link and a splitter element
Hawley Systems considerations for the use of xDSL technology for data access
AU2008310295A1 (en) Cross connect block
US7643631B2 (en) Enclosure for broadband service delivery system
US6831930B1 (en) Access panel for network end linesharing ADSL/POTS splitter applications
EP1175077B1 (en) A DSL-compatible line card for analog telephone lines
CN101252373B (en) Local terminal equipment, signal separator and communicating system
CN101945029B (en) XDSL broadband access method and system supporting line division duplex
AU2007259485B2 (en) Apparatus, method and system for providing new communication services over existing wiring
US6829336B1 (en) System and method for active filtering in a telecommunications network
CN100438467C (en) Method and system for expanding xDSL transmission band-width
KR100802242B1 (en) Broadband and Narrowband Service Processing Apparatus in Communication Equipment and Its Implementation Method
US20110299522A1 (en) Apparatus, method and system for providing new communication services over existing wiring
CN101743720B (en) The method and apparatus of data communication and comprise the communication system of this equipment
CN102082886A (en) Circuit and equipment of digital subscriber line
US20030035365A1 (en) Reducing noise communications lines
US7450615B2 (en) Apparatus and method for automatically bypassing a load coil in a digital subscriber line circuit
US7460663B1 (en) System and method for distributing network communication signals
US7072448B2 (en) DSL tester

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111026

Termination date: 20210225

CF01 Termination of patent right due to non-payment of annual fee