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`Docket Number I
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`19723-36396
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`§ VISIONAL APPLICATION FOR PA TENT COVER SHEET (Small Entity)
`This is a request for filing a PROVISIONAL APPLICATION FOR PATENT under 37 CFR 1.53 (c).
`
`i
`
`IIIIIIIII
`
`‘
`
`_u
`cu: (first and middle [if any])
`
`Edward R.
`
`Joseph A.
`Patrick A.
`
`Katzenberg
`Caceres
`
`Deptula
`Evans
`
`INVENTOR(S)lAPPLlCANT(S)
`Residence (City and either State or Foreign Country)
`Trumbull, Connecticut
`New Milford, Connecticut
`
`Watertown, Connecticut
`Burlington, Connecticut
`
`I Additional inventors are being named on page 2 attached hereto
`TITLE OF THE INVENTION (280 characters max)
`
`Apparatus and Method for Remotely Powering Access Equipment Over a 10/100 Switched Ethernet Network
`
`j°ii71"z*‘3”"Ei'ee"’°llllllglyl/Ill!flmlllllllllllllll
`
`Direct all correspondence to‘
`
`I D Cusmmet Number
`OR
`_
`_
`Firm or
`individuai Name William C. Crutcher, Esq.
`Address
`Gager & Peterson, LLP
`Address
`One Exchange Place
`
`City
`Countny
`
`Waterbury
`US
`
`CORRESPONDENCE ADDRESS
`
`1
`
`’
`
`Place Customer Number
`Bar Code Label here
`
`State
`
`06722-2480
`
`Telephone
`
`203-597-5116
`
`Fax
`
`203757-T888
`
`ENCLOSED APPLICATION PARTS (check all that apply)
`
`E Small Entity Statement
`5
`NumberofPages if
`K‘ Specification
`El Other (specify)
`i
`3
`Number ofSheets
`E Drawing(s)
`METHOD OF PAYMENT OF FILING FEES FOR THIS PROVISIONAL APPLICATION FOR PATENT {check one)
`FILING FEE
`AMOUNT
`
`I
`
`VM
`
`A check or money order is enclosed to cover the filing fees
`The Commissioner is hereby authorized to charge filing fees or
`credit any overpayment to Deposit Account Number
`The invention was made by an agency otthe United States Government or under a contract with an agency ofthe United States Government.
`
`7'
`
`1
`
`V
`
`$75.00
`
`No.
`
`B Yes, the name of the U 8 Government agency and the Government contract number are
`
`Respectfully submitted,
`
`SIGNATURE ,
`
`‘/I
`
`W
`
`.
`
`I
`
`Date
`
`March10, 1999
`
`TYPED or PRINTED NAME
`
`William c. Crutcher
`
`REGISTRAHON NO
`(if appropriate)
`
`19,279
`
`TELEPHONE
`
`203-597-5116
`
`USE ONLYFOR FILING A PROVISIONAL APPLICATION FOR PA TENT
`SEND T0: Box Provisional Application, Assistant Commissionerfor Patents, Washington, DC 20231
`
`[Pag6l0f
`
`Z
`
`]
`
`P19SIvIALLlREV04
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0001
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`
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`PROVISIONAL APPLICATION FOR PA TENT COVER SHEET (Small Entity)
`
`Given Name (first and middle [i1any]) i
`
`Famiiy Name or Surname
`
`Residence (city and either State or Foreign Country)
`
`iNVENTOR(S)/APPLICANT(S)
`
`Certificate of Mailing by Express Mail
`
`this provisional patent application cover sheet,
`I certify that
`provisional patent application and fee is being deposited on
`March 10, 1999
`with the U 8 Postal Service as
`"Express Mail Post Office to Addressee" service under 37
`C F R 1.10 and is addressed to the Assistant Commissioner
`
`for Patents, Wla/Si/'lbi"igtOI’1, CTZO23 '7
`4&4
`~ /ih/zz24a4;n
`Signature ofPerson ./ligifiraig Correspondence
`
`Barbara L. Juhas
`
`Typed or Printed Name ofPerson iMi1iIing Correspondence
`
`USE ONLY FOR FILING A PROVISIONAL APPLICATION FOR PA TENT
`SEND T0: Box Provisional Application, Assistant Commissionerfor Patents, Washington, DC 20231
`P1 QSMALLIREVUI1
`
`[Page 2 of 2]
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0002
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`MRR 89 '99 82:86PM GRGER & PETERSON
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`PTO/S5113 (1-99
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`STATEMENT CLAIMING SMALL anrrrv srxrus
`(37 can 1.9m &1.27(c))--SMALL ausmess concean
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`19723-35395.
`
`App|ioant.F'atentee.or|dentifier. Katzenbergg et al-
`ApplicatlonorPatentNc.:
`gm
`Fitedorlssued:
`
`Title: Aggaratus and Method for Remote 1 Powering Access Eguigment over
`a 10/100 Switched Ethernet Network
`1 hereby state that I an:
`El
`the owner of the small business concern identified below:
`® an otficial of the small business concern empowered to act on behalf of the concern identified below;
`
`NAMEOFSMALLBUSWESSCONCERN Merlot Communications, Inc.
`
`ADDRESS OF SMALL BUSINESS CONCERN
`
`111
`
`el Conner:
`
`0 1
`
`i hereby eieie ihei the ebeve identified small business concern qualifies as a srnalt business concern as defined in
`13 CFR Part 121 for purposes of paying reduced fees to the United States Patent and Trademark Office. Questions related
`to size standards for a small business concern may be directed to: Small Business Administration, Size Standards Staff,
`409 Third Street, SW, Washington, DC 20416.
`
`I hereby state that rights under contract or law have been conveyed to and remain with the small business concern
`identified above with regard to the invention described in:
`
`ID the specification filed herewith with title as listed above.
`C!
`the appiication identified above.
`E the patent identified above.
`
`If the rights held by the above identified small business ooncam are not exclusive. each individual, concern, or
`organization having rights in the invention must file separate statements as to their status as small entmeg, and no right;
`to the invention are held by 811)’ Peteen. other than the inventor. who would not qualify as an independent inventor under
`37 CFR 1.9(c) if that person made the invention, or by any concern which would not qualify as a small business concern
`under 37 CFR 1.9(d), or a nonprofit organhation under 37 CFR 1.9(a).
`,
`
`Each person, concern, or organization having any rights in the invention is listed below:
`II no such fierson, concern, or organization exists.
`[:1 each suc person, concern, or organization is listed below.
`
`Separate statements are required from each named person, concern or organization having nghis to the invention
`stating their status as small entities. (37 CFR 1.27)
`
`in this application or patent. notification of any change in status resulting in loss of
`I acknowledge the duty to tile.
`entitlement to email entity status pri0r‘10 paying. or at the time of paying, the earliest of the issue fan or any maintenance
`fee this after the date on which status as a small entity is no longer appropriate. (37 CFR 1.28(b))
`
`NAME or PERSON SIGNING
`
`R°“31d 34- Keen“
`
`TITLE OF PERSON IF OTHER THAN OWNER Chief Techno-1°gY Officer
`
`ADDRES3 oi:
`
`SIGNATURE A V
`
`*
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`uist: Road: Oxford, CT 06478
`
`Burden Hour Statement. This form 1! estimated to lake 0.: hours to comglgutc. Time will vary depending upon the needs of the individual case Any
`Washingbn DC 20231. D0 N
`SEND EE3 OR C MFLETED FORMS TO THIS ADDRESS. SEND 70 Assistant Commissioner for Patents,
`comments on the amount of time ou are rcgurred to com ta this term 5
`Id be sent to the Chief lnlonnation otheer, Patent and Trademark Office,
`Washington‘, no 20251.
`
`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0003
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`
`
`Katzenberg et al.
`19723-36396
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`Apparatus and Method for Remotely Powering Access Equipment
`
`Over a 10/100 Switched Ethernet Network
`
`This invention broadly relates to the powering of 10/100 Ethernet compatible
`
`equipment. The invention more particularly relates to apparatus and methods for
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`automatically determining if remote equipment is capable of remote power feed and
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`if it is determined that the remote equipment is able to accept power remotely then
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`to provide power in a reliable non—intrusive way.
`
`Background of the Invention
`
`A variety of telecommunications equipment is remotely powered today.
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`Telephones and Network Repeater devices are examples of remotely powered
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`equipment. Obviously there are many advantages to remotely powering equipment,
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`however this technique has not migrated to data communications equipment for
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`several reasons. Data communications equipment has traditionally required high
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`power levels to operate which has made it prohibitive to implement. The widely
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`distributed nature as well as the use of shared media used in data networks has
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`also made remote power impractical.
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`The desire to add remotely powered devices to a data network is being
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`pushed by the convergence of voice and data technologies. The advent of IP
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`Telephony, Voice over IP and Voice over Packet technologies has brought
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`traditional telephony requirements into the data environment. It is not desirable to
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`have a phone powered by a local wall transformer. It is desirable to have a
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`centrally powered system that can be protected during a power outage.
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
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`Katzenberg et a1.
`19723-36396
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`It is therefore an object of the invention to provide methods and apparatus for
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`reliably determining if a remote piece of equipment is capable of accepting remote
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`power.
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`It is another object of this invention to provide methods and apparatus for
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`delivering remote power to remote equipment over 10/100 switched Ethernet
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`segments and maintain compliance with IEEE 802.3 standards.
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`Summary of the Invention
`
`In accord with the objects of the invention an apparatus for remotely
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`powering access equipment over a 10/100 switched Ethernet network comprises:
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`automatic detection of remote equipment being connected to the network;
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`determining whether the remote equipment is capable of accepting remote power in
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`a non—intrusiVe manner; delivering the power to remote equipment over the same
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`wire pairs that deliver the data signals; automatic detection of remote equipment
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`being removed from the network.
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`Drawings
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`The invention will be more clearly understood by reference to the following
`
`description, taken in connection with the accompanying drawings, in which:
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`Fig. 1 is a simplified schematic diagram of the remote power automatic
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`detection system of the present invention, shown in conjunction with a single unit of
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`remote access equipment connected as part of an Ethernet local area network,
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`Fig. 2 is a simplified schematic drawing of a power feed configuration for
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`supplying power to the remote access equipment on the local area network, and
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0005
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`Katzenberg et al.
`19723-36396
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`Fig. 3 is a simplified physical layout of a portion of a switched Ethernet
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`network segment showing a telephone device powered through the network data
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`carrying medium.
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`Description of the Preferred Embodiment
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`Referring now to Fig. 1 of the drawing, a remote access device 10 which is
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`compatible with 10/ 100 Ethernet requirements is connected through a data
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`communications network interface adapter to a high data rate network cable 12.
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`Remote access device 10 requires power to carry out its operation and includes an
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`internal dc-dc switching supply which, in the absence of the present invention,
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`would be supplied by an ac transformer adapter plugged in to the local 110 volt
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`supply. Cable 12 is preferably Category 5 wiring such as 100BaseX suitable for 100
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`Mb/s data communications over a switched Ethernet network, and is connected to a
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`port in a network data node 14, such as a switch or hub.. Ethernet frames
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`containing data are transmitted over cable 12 between node 14 and device 10, and
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`from node 14 to and from the network in accordance with selected protocols in a
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`conventional manner known in the art.
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`In accordance with the present invention, a power source 16, which may be
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`the same as the conventional main power supply used to power the node 14, is
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`connected to cable 12 via lines 18 to supply a power level sensing potential to the
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`remote access equipment 10 over one of the cable conductors. A return path from
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`remote access equipment 10 is connected through a lead 20 to an automatic remote
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`power detector, shown generally as 22. Detector 22 includes an A/D converter and
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`microprocessor control unit 24, operating a detection circuit consisting of a
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`resistor 26, with shunting switch 28, both connected in parallel to a resistor 30,
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0006
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`Katzenberg et a1.
`19723-36396
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`providing a path to ground. Switch 28 is actually an internal software controlled
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`switch depicted diagrammatically as actuated by operator 32.
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`Automatic detection of remote equipment being connected to the network is
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`accomplished by delivering a low level current (approx. 20 ma) to the network
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`interface and measuring a voltage drop in the return path. There are three states
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`which can be determined: no Voltage drop, a fixed level voltage drop or a varying
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`level voltage drop. If no voltage drop is detected then the remote equipment does
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`not contain a dc resistive termination, and this equipment is identified as unable to
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`support remote power feed. If a fixed voltage level is detected then the remote
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`equipment contains a dc resistive termination (a "bob smith" is typical for Ethernet
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`terminations), and this equipment is identified as unable to support remote power
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`feed.
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`If a varying Voltage level is detected, this identifies the presence of dc-dc
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`switching supply in the remote equipment. The varying level is created by the
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`remote power supply beginning to start up but the low current level is unable to
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`sustain the start up. This cycle continues to be repeated creating a "sawtooth"
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`Voltage level in the return path. When this cycle is confirmed, switch S1 is closed
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`which increases the power output to the remote equipment. When the power to the
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`remote equipment reaches the proper level the remote power supply turns on and
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`the remote equipment becomes active. At this point a second, software level,
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`confirmation takes place. The remote equipment must respond to a poll using a
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`coded response with a unique MAC address. When this process is complete the
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`remote equipment is identified as known access equipment capable of accepting
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`remote power.
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`Referring now to Fig. 2 of the drawing, a suitable remote power supply is
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`shown generally as 34, which may be conveniently incorporated into an Ethernet 8
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0007
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`Katzenberg et al.
`19723-36396
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`port switch card. A first center tap data transformer 36 includes a transformer
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`winding 38 with opposite ends connected by leads 40, 42 to terminals 6, 3
`
`respectively of an RJ45 connector 43. A second center tap transformer 44 with a
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`transformer winding 46 has its opposite ends connected Via leads 48, 50 to
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`terminals 2, 1 respectively of the connector 43. Power feed is through a center tap
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`lead 39 and power return is through a center tap lead 45. Inactive terminals 7, 8 of
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`connector 43 are connected via lead 52 to a resistor 54. Inactive terminals 1, 2 of
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`connector 43 are connected via lead 56 to a resistor 58. A junction between
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`resistors 54 and 58 is connected to ground via a capacitor 60.
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`Remote power is delivered to the remote equipment over the existing data
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`signaling pairs (phantom power feed). Although it is typical that all 8 signal leads
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`are delivered to remote equipment, only the 4 signaling leads are guaranteed in
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`practice. See Fig. 2 for the power feed configuration.
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`Once the remote equipment is operating and confirmed as a known remote
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`power enabled device, the logic circuit shown in Fig. 1 begins to look for removal of
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`the remote equipment or an overload fault condition. If the measured voltage level
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`drops, then this indicates that the remote equipment has been removed and the
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`logic circuit returns to the initial hunt state. If an overload condition is detected
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`then the logic circuit returns to its initial state. It can then be programmed to
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`either wait for the fault state to be cleared or continue to cycle through the state
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`machine.
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`Fig. 3 illustrates the physical layout of components corresponding to the
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`schematic diagram of Fig. 1. The remote access equipment in this case is a
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`telephone 62 equipped to handle data communications as well as voice and is
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`connected through an access node 64 to premises wiring 66, comprising a
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`Category 5 Ethernet 1OOBaseX cable of 4 sets of unshielded twisted pairs, which
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0008
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`Katzenberg et al.
`19723-36396
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`carry both data and power to the telephone 62. Wiring 66 is connected to one of the
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`ports of an 8 port Ethernet switch 68 which is powered from a main power
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`supply 70. The Ethernet switch card incorporates the automatic remote power
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`detector 22 discussed in Fig. 1 and the remote power supply 34 discussed in Fig. 2.
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`The power is provided over the wiring 66 both to the remote access node 64 and
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`telephone 62.
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`While there is disclosed what is considered to be the preferred embodiment of
`
`the invention, other modifications will occur to those skilled in the art.
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`Aerohive - Exhibit 1
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`Aerohive - Exhibit 1038
`0009
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`+END
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