WO2011048243A2 - Microfiltro activo para estándar de comunicación vdsl2 - Google Patents
Microfiltro activo para estándar de comunicación vdsl2 Download PDFInfo
- Publication number
- WO2011048243A2 WO2011048243A2 PCT/ES2010/000431 ES2010000431W WO2011048243A2 WO 2011048243 A2 WO2011048243 A2 WO 2011048243A2 ES 2010000431 W ES2010000431 W ES 2010000431W WO 2011048243 A2 WO2011048243 A2 WO 2011048243A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- active
- line
- impedance
- microfilter
- communication standard
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims description 17
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 230000006978 adaptation Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 101150012579 ADSL gene Proteins 0.000 description 4
- 102100020775 Adenylosuccinate lyase Human genes 0.000 description 4
- 108700040193 Adenylosuccinate lyases Proteins 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/06—Frequency selective two-port networks comprising means for compensation of loss
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/46—One-port networks
- H03H11/52—One-port networks simulating negative resistances
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
Definitions
- the object of the present invention is to provide an active microfilter for broadband access over the VDSL2 standard that suppresses or mitigates the effect created by the lack of adaptation of the impedances introduced by the cables or pairs used in the RTB for the transmission of information. , voice, etc., within the local user equipment.
- the invention is applicable to the field of telecommunications, preferably in broadband applications by the conventional telephone network or RTB, providing an active microfilter consisting essentially of an active part comprising a sign inverter circuit and a passive part comprising capacitors, coils and resistance; and where the objective is to eliminate the reflections caused by sections of line without adapting that interfere in the correct operation of the network.
- the present invention discloses a self-installing device, which comprises the novel active microfilter of the present invention, which separates the Basic Telephone Services from the Broadband services on VDSL2 access technology and, at the same time, partially or totally suppresses , the negative effect of transfer rate reduction introduced by the telephone network topologies (ring, star, bus) arranged in the local user equipment within the performance of the VDSL2 standard.
- Said self-installing device comprises a power circuit that can be selected from an AC / DC converter, a rechargeable battery, a battery and a combination of the above elements.
- microfilters also known as filters distributed online, is the most used solution in the user's local equipment because it can be installed directly by the end user.
- the dividers need to be installed by the employees of the telephone service company, whose deployment is very expensive, being, therefore, sparsely used.
- microfilters currently used are passive devices, made by coils, resistors and capacitors, and are arranged only in the telephone connectors where the end user wants to connect the telephone terminal.
- microfilters described above have a load impedance that, for frequencies greater than 4kHz (upper limit of the RTB spectrum), makes the microfilters behave like a transmission line with its open end.
- the section of the transmission line has its open end or if it has a microfilter, said section of the transmission line arranged in the part of the local user equipment behaves, seen from the Central Telephone Office equipment that provide the services, such as a parallel resistance without adapting to frequencies greater than 4 kHz if it is satisfied that the product of its length by its phase (radians / km) is an odd integer number of times ⁇ radians, causing the consequent decrease in transmission speed.
- the impedance adaptation problem described above is not very important in ADSL and ADSL2 + technologies that work at maximum frequencies of 1,104 MHz and 2,208 MHz, respectively.
- Patent EP1901540 A1 entitled “ADSL Splitter”, discloses a passive splitter and not an active microfilter.
- Patent EP1783996 A1 entitled “Advanced ADSL Splitter” discloses a passive splitter instead of an active microfilter such as that of the present invention.
- this invention consists of an active microfilter composed of an active part that basically comprises a sign inverter circuit, and a passive part that models the characteristic parameters of the line section to be adapted, so as to mitigate or eliminates reflections due to such sections of line without adapting in broadband access on VDSL2 (Very-High-Bit-Rate Digital Subscriber Line 2) technology.
- the present invention is completed with a power circuit that provides power for the active components.
- Local user equipment is usually divided into N enclosures, each of them having branches or line sections connected to the main telephone line.
- the configurations of said sections of line or branches can be ring, star or bus.
- the main line will be connected to the xDSL modem arranged in any of the premises of the local user equipment, in the rest we can obtain other different configurations such as an open circuit branch to which no device is connected, a branch to the that a telephone terminal is connected through a passive filter, etc.
- the present invention comprises an active microfilter connected to all branches or 0000431
- the line or branch section together with the load impedance Z L introduce a joint impedance in parallel Z v at the junction point with the main telephone line. Said impedance Z v generates a reflection coefficient pv, such that:
- all branches of said local network load the main network with an infinite impedance over the entire frequency range. This means that each branch introduces a reflection coefficient p v equal to 1 in the entire frequency range. Applying this condition, the load impedance that each section of line or branch on the main telephone line with a star typology is obtained: one
- This last expression represents the load impedance Z L that each section of line or branch requires to achieve that said section of line or branch behaves as an open circuit in the entire frequency range at the point of connection with the main telephone line. Since real lines have losses, the linear attenuation coefficient ⁇ must be added to the previously calculated expression. Said linear attenuation coefficient ⁇ requires a load impedance with negative resistance to adapt the losses in the transmission line section.
- the present invention presents a sign inverter circuit made with active components whose main function is to invert the sign of the impedance Z to be adapted and, by therefore, whose sign is reversed.
- said sign inverter circuit is basically composed of an operational amplifier whose output is connected to its non-inverting input by means of the impedance Z whose sign is inverted.
- said sign inverter circuit reverses the sign of impedance Z, with a scale factor equal to R 2 / Ri (ratio between nominal values of the resistors Ri and R 2 ), assuming that the differential gain A of the operational amplifier tends to infinity, although in practice it is sufficient with gains equal to or greater than 10. If the previous condition is not met, the requirement to reverse at least the impedance sign is as follows:
- the load impedance Z L is:
- the value of the Z impedance mentioned above is a well known value since it coincides with the value of the impedance introduced by a branch or line section whose end is open forming an open circuit, said branch or line section having a length L, a characteristic impedance Z 0 , and a ⁇ propagation function.
- the present invention incorporates, together with the active part, a passive part.
- the passive part comprises a passive RLGC quadrupole circuit that by means of passive components such as coils, resistors and capacitors models the characteristics of the metal torque section, that is, its characteristic impedance Z 0 , its length L and its ⁇ propagation function.
- This type of circuit consists of a resistor and a coil in series, and a resistor and a capacitor in parallel with the active part, which define the parameters of resistance in series R, inductance in series L, conductance in parallel G and capacitance in parallel C, respectively.
- the particular embodiment of the present invention uses, for lengths of the line section to be adapted greater than L, as many RLGC quadrupoles in cascade as the number of times the characteristic length L of the metal torque section.
- the active part of the active filter of the present invention includes a passive LC filter connected to the sign change circuit input by two capacitors arranged at each input of the change circuit of sign.
- the passive LC filter comprises two coils in series, one for each input, a capacitor in parallel between both inputs. In this way, the telephone terminal can be powered remotely by the Central Telephone Office.
- the passive part formed by the RLGC quadrupoles is connected to the active part by the output of the operational amplifier and the non-inverting input thereof.
- a power circuit selected from a DC to AC / DC converter, a power element and a combination of both is used.
- the power element is selected from a rechargeable battery, a battery and their combinations.
- Said rechargeable battery is capable of being recharged by the AC to DC converter or another external charger.
- the combination of the AC / DC converter with the rechargeable battery by the AC / DC converter since it ensures the functioning of the active microfilter in one
- the proposed solution works in the frequency range of the digital subscriber line protocol with a very high VDSL2 transfer rate that is between 23,76875 kHz at 30MHz. Therefore, the solution proposed by the present invention is also valid for other types of technologies based on the xDSL digital subscriber line, such as the ADSL digital asymmetric subscriber line (ITU-T G.992.1, 23.76875 kHz - 1.104 MHz) and ADSL2 + (ITU-T G.992.5, 23.76875 kHz - 2.208 MHz).
- ADSL digital asymmetric subscriber line ITU-T G.992.1, 23.76875 kHz - 1.104 MHz
- ADSL2 + ITU-T G.992.5, 23.76875 kHz - 2.208 MHz.
- the solution proposed by the present invention is valid for all types of telephone network topologies in the local user equipment such as star, ring or bus topology, because it suppresses the parallel impedance introduced by each section of line or branch.
- the RLGC sections must be modeled according to the technical characteristics (characteristic impedance, length, propagation function) of the metallic pair used in the telephone network of the local user equipment that may vary depending on the country.
- characteristics of the metallic pair are specified by the current regulations in Spain of the ICT (Common Telecommunications Infrastructures).
- Figure 1 shows a simplified connection diagram between the Central Telephone Office, which provides the xDSL service, and the user's local equipment where two different types of configurations can be observed.
- Figure 2 shows the distribution of the telephone line within the user's local equipment, which is divided into N rooms.
- Figure 3 shows the main telephone line that starts from the Central Telephone Office and that connects to the xDSL modem of the local user equipment.
- a load impedance Z L is connected at an intermediate point of said main telephone line.
- Figure 4 shows a circuit of active components such as that used by the present invention to reverse the sign of the impedance Z that we want to adapt.
- Figure 5 shows the main telephone line that starts from the Central Telephone Office and that connects to the xDSL modem of the local user equipment.
- a load impedance Z L is connected at an intermediate point of said main telephone line.
- a line or branch section is connected to said impedance Z L.
- Figure 6 shows the active microfilter connected to the line section, the active part and its components, and the passive part and its components as a function of the length L of the section.
- Figure 7 shows the self-installing device comprising the active microfilter of the present invention, the connection of said device with a telephone terminal and with the conventional power supply of the electrical network, where the power circuit is composed of a current converter AC / DC DC and a rechargeable battery by said AC / DC AC converter.
- Figure 8 shows the self-installing device comprising the active microfilter of the present invention, the connection of said device with a telephone terminal and a power supply.
- FIG. 1 shows a simplified connection diagram between the Central Telephone Office (1) and the local user equipment (2) where two different types of configurations can be observed.
- the Central Telephone Office (1) provides both the xDSL service from the Data Network (29) and the basic telephone services (30) which, through the xDSL modem (3) and the splitter (5) located in the Central Telephone Office , allow the transmission of both services through a single main telephone line (4).
- a splitter (5) or "splitter” is placed at the beginning of the local user equipment (2), the xDSL modem (3) and the telephone terminals (8) being connected to it.
- a computer (31) connects to the xDSL modem (3).
- the splitter (5) of the first configuration is replaced by microfilters (7) connected to the telephone terminals (8). As can be seen in Figure 1, there are as many microfilters (7) as there are telephone terminals (8).
- Figure 2 shows a distribution of a telephone network in star topology within the local user equipment (2), which is divided into N enclosures.
- the main telephone line (4) is distinguished, which is connected to the xDSL modem (3) provided in room 3 (2 in ).
- the enclosures 1 (2 1 ), 4 (2 1111 ) and N (2 llln ) of the distribution shown in Figure 2 two telephone terminals (8) connected to the main telephone line (4) at point (9) are arranged ), through the branch (6) and the microfilter (7).
- the enclosure 2 there is a branch (6) whose end is not connected to any equipment, that is, it forms an open circuit.
- FIG. 3 shows the main telephone line (4) that starts from the Central Telephone Office (1) and connects to the xDSL modem (3) of the local user equipment (2).
- a load impedance Z L which introduces a reflection coefficient p L , is connected to said main telephone line (4) via a branch or line section of metallic pair ).
- Said impedance Z v generates a reflection coefficient p v , such that:
- This last expression represents the load impedance Z L required by each branch (6) to make said branch behave as an open circuit over the entire frequency range at the connection point (9) of the main telephone line (4) .
- the linear attenuation coefficient ⁇ is added to the previously calculated expression. Said linear attenuation coefficient ⁇ requires a load impedance with negative resistance to adapt the losses in the transmission line.
- the present invention comprises active microfilter for VDSL2 communication standard comprising an active part (19), a passive part (18) and a circuit supply, where said active part (19) comprises a sign inverter circuit (11).
- Said active microfilter eliminates reflections of unadjusted sections of line (6), whose characteristic parameters are its impedance Z 0 , its length L and its propagation function ⁇ , and which, connected at one point (9) to the main telephone line (1) are adapted.
- Figure 4 shows a circuit of active components such as that used by the present invention to reverse the sign of an impedance Z (12).
- Said circuit is a sign inverter circuit that is basically composed of an operational amplifier (13) whose output is connected to its non-inverting input (+) by means of the impedance Z (12) whose sign is inverted.
- a circuit like the one in Figure 4 reverses the sign of the impedance Z (12), with a scale factor equal to R 2 / Ri (ratio between the nominal values of the resistors and R 2 ), assuming that The differential gain A of the operational amplifier (13) tends to infinity, although in practice it is sufficient with gains equal to or greater than 10. If the above condition is not met, the requirement for the values of the resistors Ri and R 2 and to reverse at least the impedance sign is as follows:
- the load impedance Z L is:
- the impedance value of Z (12) mentioned above is a well known value since it coincides with the impedance value introduced by a section of line whose end is open forming an open circuit, said line section having a length L , a characteristic impedance Z 0 , and a propagation function ⁇ , as shown in Figure 3.
- the impedance Z (12) shown in Figure 4 can be obtained using a metal pair section (metal wire with wires inside, preferably copper) with the same length and characteristics (Z 0 and ⁇ ) as the branch (6) whose effects we want to suppress as shown in Figure 5.
- the present invention incorporates a passive part (18) next to the active part (19). formed by at least one RLGC quadrupole (17) like the one shown in figure 6 which, by means of passive components such as coils, resistors and capacitors, models the characteristics of the metal torque section, that is, its characteristic impedance Z 0 , its length L and its propagation function and.
- This type of circuit consists of a resistor and a coil in series, and a resistor and a capacitor in parallel with the active part, which define the parameters of resistance in series R, inductance in series L, conductance in parallel G and capacitance in parallel C, respectively.
- Figure 6 shows that in order to adapt sections of line or branches of lengths greater than L, the present invention uses as many RLGC quadrupoles (17) in cascade as the number of times the characteristic length L of the metal torque section.
- Figure 6 shows how the active part (19) of the active filter (10) of the present invention is connected to the passive part (18) and the telephone terminal (8).
- the active part (19) of the active microfilter (10) of the present invention includes a passive LC filter (21) at the input of the sign inverter circuit (11) by means of two capacitors (20) disposed at each input of the sign inverter circuit (eleven).
- the passive filter LC (21) comprises two coils in series, one for each input, a capacitor in parallel between both inputs. In this way, the telephone terminal (8) is powered remotely by the Central Telephone Office (1).
- the passive part (18) formed by at least one RLGC quadrupole is connected to the active part (19) by the output of the operational amplifier (14) and the non-inverting input thereof (+).
- Figure 7 shows a self-installing device comprising the active microfilter (10) of the present invention as well as a power circuit.
- the active microfilter (10) of the present invention With the current technology and, taking into account that the DC supply current is directly related to the product of the bandwidth gain, it is not possible to feed the active components of the active part of the active microfilter of the present invention by means of the power coming from the Central Telephone Office (1), since with the telephone terminal hung up, the power supply coming from said Central Telephone Office is only 1 mA.
- Said power circuit shown in Figure 7 comprises an AC / DC power converter (22) that is fed from the conventional electrical outlet (23) located in the local user equipment (2) and provides the voltages and currents Power supply necessary for the proper functioning of active microfilter. Additionally, the power circuit of Figure 7 comprises a rechargeable battery as a power element (32), which is recharged by the AC / DC power converter, and which ensures the functioning of the active microfilter in the absence of current from the outlet conventional power grid (23).
- the capacitors (20) shown in Figure 6 prevent interference between the circuit of power supply of the active microfilter (10) and the power supply of the telephone terminal (8) from the Central Telephone Office (1).
- the self-installing device (25) shown in Figure 7, in addition to the aforementioned elements, comprises an input connector (26) and another telephone line output (27) that allow the connection of telephone terminals (8) ) to the main telephone line (4), as well as an alternating current source (28) that provides the same voltage and current characteristics as the conventional mains socket (23).
- Figure 8 shows a self-installing device (25) comprising the microfilter of the present invention and a power circuit formed by a power element selected between a rechargeable battery and a battery.
- the self-installing device (25) shown in Figure 8 in addition to the aforementioned elements, comprises an input connector (26) and another telephone line output (27) that allow the connection of telephone terminals (8) ) to the main telephone line (4).
- the self-installing device (25) that separates Basic Telephone Services from Broadband services on VDSL2 access technology and, at the same time, partially or totally suppresses the negative reduction effect of transfer rate introduced by the telephone network topologies (ring, star, bus) arranged in the user equipment within the performance of the VDSL2 standard.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2012004628A MX2012004628A (es) | 2009-10-20 | 2010-10-20 | Microfiltro activo para estandar de comunicacion vdsl2. |
US13/502,459 US20120263295A1 (en) | 2009-10-20 | 2010-10-20 | Active microfilter for vdsl2 communication standard |
EP10824497.1A EP2493168A4 (en) | 2009-10-20 | 2010-10-20 | Active microfilter for vdsl2 communication standard |
BR112012008909A BR112012008909A2 (pt) | 2009-10-20 | 2010-10-20 | microfiltro ativo para padrão de comunicação vdsl2 e dispositivo autoinstalação para padrão de comunicação vdsl2 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200930869A ES2372158B1 (es) | 2009-10-20 | 2009-10-20 | Microfiltro activo para estándar de comunicación vdsl2. |
ESP200930869 | 2009-10-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011048243A2 true WO2011048243A2 (es) | 2011-04-28 |
WO2011048243A3 WO2011048243A3 (es) | 2011-06-16 |
Family
ID=43900738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2010/000431 WO2011048243A2 (es) | 2009-10-20 | 2010-10-20 | Microfiltro activo para estándar de comunicación vdsl2 |
Country Status (9)
Country | Link |
---|---|
US (1) | US20120263295A1 (es) |
EP (1) | EP2493168A4 (es) |
AR (1) | AR078710A1 (es) |
BR (1) | BR112012008909A2 (es) |
CL (1) | CL2012000979A1 (es) |
ES (1) | ES2372158B1 (es) |
MX (1) | MX2012004628A (es) |
UY (1) | UY32960A (es) |
WO (1) | WO2011048243A2 (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2645690A1 (en) * | 2012-03-30 | 2013-10-02 | British Telecommunications Public Limited Company | Method and apparatus for providing data and telephony services |
WO2018087106A1 (en) | 2016-11-08 | 2018-05-17 | British Telecommunications Public Limited Company | Method and apparatus for operating a digital subscriber line arrangement |
WO2018087104A1 (en) | 2016-11-08 | 2018-05-17 | British Telecommunications Public Limited Company | Method and apparatus for operating a digital subscriber line arrangement |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1999040716A2 (en) | 1998-02-03 | 1999-08-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Active splitter |
US6829336B1 (en) | 2000-05-30 | 2004-12-07 | Cisco Technology, Inc. | System and method for active filtering in a telecommunications network |
US6868117B1 (en) | 2001-02-26 | 2005-03-15 | Apple Computer, Inc. | Splitter and microfilter dongle for a single RJ11 DSL/analog combo modem |
EP1783996A1 (en) | 2005-11-04 | 2007-05-09 | Alcatel Lucent | Advanced ADSL splitter |
EP1901540A1 (en) | 2006-09-13 | 2008-03-19 | Ycl Electronics Co., Ltd. | ADSL splitter |
US20080118058A1 (en) | 2006-11-22 | 2008-05-22 | Gyula Jakab | Splitter with Active Transient Suppression Circuit |
US20090141183A1 (en) | 2006-04-12 | 2009-06-04 | Clint Alan Ecoff | Active Splitter Device and Method Using Diplexed Front End |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5930340A (en) * | 1997-07-07 | 1999-07-27 | Advanced Micro Devices | Device and method for isolating voice and data signals on a common carrier |
SE511316C2 (sv) * | 1998-01-29 | 1999-09-13 | Ericsson Telefon Ab L M | Aktiv impedansomvandlare |
US6480510B1 (en) * | 1998-07-28 | 2002-11-12 | Serconet Ltd. | Local area network of serial intelligent cells |
US6760433B2 (en) * | 2000-05-15 | 2004-07-06 | Centillium Communications, Inc. | Central office interface techniques for digital subscriber lines |
FI20001521A (fi) * | 2000-06-27 | 2001-12-28 | Nokia Corp | Suodatin |
DE10121517A1 (de) * | 2001-05-03 | 2002-11-14 | Infineon Technologies Ag | Verfahren und Vorrichtung zum Einstellen eines aktiven Filters |
CA2559133C (en) * | 2006-09-08 | 2011-10-25 | Bce Inc | Apparatus and system for controlling signal filtering |
EP2165519B1 (en) * | 2007-07-11 | 2019-02-13 | Telefonaktiebolaget LM Ericsson (publ) | Arrangement and method relating to subscriber line connections |
US8027461B1 (en) * | 2007-10-11 | 2011-09-27 | Adtran, Inc. | Systems and methods for splitting telecommunication signals with reduced noise |
CA2707530C (en) * | 2008-04-22 | 2016-10-11 | Afl Telecommunications, Llc | Method and apparatus for universal xdsl demarcation interface with multi-functional capability and signal performance enhancement |
-
2009
- 2009-10-20 ES ES200930869A patent/ES2372158B1/es not_active Expired - Fee Related
-
2010
- 2010-10-20 UY UY0001032960A patent/UY32960A/es unknown
- 2010-10-20 WO PCT/ES2010/000431 patent/WO2011048243A2/es active Application Filing
- 2010-10-20 AR ARP100103839A patent/AR078710A1/es not_active Application Discontinuation
- 2010-10-20 EP EP10824497.1A patent/EP2493168A4/en not_active Withdrawn
- 2010-10-20 US US13/502,459 patent/US20120263295A1/en not_active Abandoned
- 2010-10-20 MX MX2012004628A patent/MX2012004628A/es active IP Right Grant
- 2010-10-20 BR BR112012008909A patent/BR112012008909A2/pt not_active IP Right Cessation
-
2012
- 2012-04-18 CL CL2012000979A patent/CL2012000979A1/es unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999040716A2 (en) | 1998-02-03 | 1999-08-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Active splitter |
US6829336B1 (en) | 2000-05-30 | 2004-12-07 | Cisco Technology, Inc. | System and method for active filtering in a telecommunications network |
US6868117B1 (en) | 2001-02-26 | 2005-03-15 | Apple Computer, Inc. | Splitter and microfilter dongle for a single RJ11 DSL/analog combo modem |
EP1783996A1 (en) | 2005-11-04 | 2007-05-09 | Alcatel Lucent | Advanced ADSL splitter |
US20090141183A1 (en) | 2006-04-12 | 2009-06-04 | Clint Alan Ecoff | Active Splitter Device and Method Using Diplexed Front End |
EP1901540A1 (en) | 2006-09-13 | 2008-03-19 | Ycl Electronics Co., Ltd. | ADSL splitter |
US20080118058A1 (en) | 2006-11-22 | 2008-05-22 | Gyula Jakab | Splitter with Active Transient Suppression Circuit |
Non-Patent Citations (1)
Title |
---|
See also references of EP2493168A4 |
Also Published As
Publication number | Publication date |
---|---|
ES2372158A1 (es) | 2012-01-16 |
EP2493168A4 (en) | 2017-01-18 |
EP2493168A2 (en) | 2012-08-29 |
MX2012004628A (es) | 2012-05-08 |
WO2011048243A3 (es) | 2011-06-16 |
UY32960A (es) | 2011-03-31 |
ES2372158B1 (es) | 2012-09-27 |
CL2012000979A1 (es) | 2012-09-14 |
BR112012008909A2 (pt) | 2019-09-24 |
AR078710A1 (es) | 2011-11-30 |
US20120263295A1 (en) | 2012-10-18 |
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