Docket Number‘
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`19723-36396
`
`,
`
`‘
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`in
`
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`t
`
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`<firstandmiddieI'ranvi>
`
`Boris
`Edward R.
`
`Joseph A.
`Patrick A.
`
`Katzenberg
`Caceres
`
`Deptula
`Evans
`
`lNVENTOR(S)lAPPLICANT(S)
`
`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 lor Remotely Powering Access Equipment Over a 10/100 Switched Ethernet Network
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`j°§571"2‘3?s‘ea"°iiiigiwiyiiiiiiiiiiiiiiiii
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`Direct all correspondence to‘
`
`:1; CI CUSIDIWV Number
`OR
`_
`_
`Firm or
`indgviduai Name William C. Crutcher, Esq.
`Address
`Gager 8. Peterson, LLP
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`CORRESPONDENCE ADDRESS
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`W
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`I
`
`Place Customer Number
`Bar Code Label here
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`I
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`Address
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`City
`Country
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`One Exchange Place
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`I
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`"Waterbury
`US
`
`CT
`State
`203-597-5116
`Telephone
`ENCLOSED APPLICATION PARTS (check all that apply)
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`06722-2480
`203-757-7888
`
`Fax
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`V S
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`pecification
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`«
`Number ofPages ~
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`6
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`Number of Sheets
`Drawing(s)
`METHOD OF PAYMENT OF FILING FEES FOR THIS PR
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`3
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`M E
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`g Small Entitystatement
`C‘ Other (specify)
`I
`OVISIONAL APPLICATION FOR PATENT (check one)
`FILING FEE
`AMOUNT
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`E A check or money order is enclosed to cover the filing fees
`The Commissioner IS hereby authorized to charge filing fees or
`$75-00
`,_
`credit any overpayment to Deposit Account Number
`The invention was made by an agency olthe United States Government or under a contract with an agency ofthe United States Government.
`
`No.
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`8 Yes, the name ofthe U 5 Government agency and the Government contract number are
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`Respectfully submitted,
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`SIGNATURE /Z
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`V
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`‘\
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`\
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`UV“,/l?,%
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`77
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`e
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`Date
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`March10, 1999
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`%
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`TYPED or PRINTED NAME
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`William c. Crutcher
`~
`—-
`
`19,279
`REGISTRAHON NO
`{if appropriate) we
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`TELEPHONE
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`203-597-5116
`
`USE ONLY FOR FILING A PROVISIONAL APPLICA TION FOR PA TENT
`SEND T0: Box Provisional Application, Assistant Commissionerfor Patents, Washington, DC 20231
`
`[Pagclnf
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`2
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`]
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`P19SNALL/REV04
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`AMX
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`Exhibit 1038-00001
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`AMX
`Exhibit 1038-00001
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`

`
`PROVISIONAL APPLICATION FOR PA TENT COVER SHEET (Small Entity)
`
`Given Name (firs! and middle [if any]) i
`
`Family Name or Surname
`
`Residence (city and either State or Foreign Country)
`
`lNVENTOR(S)/APPLlCANT(S)
`
`Certificate ofMailing 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“ sen/ice under 37;
`C F R 1.10 and is addressed to the Assistant Commissioner
`(.
`for Patents, W;i,sl/-nrigton, lZ>Cf2(‘)'23%‘/‘
`/j?42'/2522 ;_ 3 '
`,
`Signature ofPerson iwzifiiig Correspondence
`
`/261
`
`5
`
`Barbara L. Juhas
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`Typed or Printed Name ofPerson Mfniling Correspondence
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`USE ONLYFOR FILING A PROVISIONAL APPLICATION FOR PA TENT
`SEND T0: Box Provisional Application, Assistant Commissionerfor Patents, Washington, DC 20231
`P19SM ALL/REVO4
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`[Page 2 nf 2]
`
`AMX
`
`Exhibit 1038-00002
`
`AMX
`Exhibit 1038-00002
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`

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`MQR Q9 ’99
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`82:86PM GRGER 8K PETERSON
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`Patent and Tgmfi gffiésea: U3" EPARTi§l%"hlDT c?i=M3o°iii¢i1sia°cie
`Under the Papiarwniii Raduaicn Act 0! 1995, no persons aie required to respond to a atlectiori at iniorrrlaton unless it dsritaya a valid OMB control nun-bar,
`
`STATEMENT CLAIMING SMALL ENTITY STATUS
`(37 cFR1.9(f) &1.27(c))--SMALL eusmess CONCERN
`
`pm, Numbe, °,,,,°,,a,,
`19723-35395
`
`AppIicant.Pstentee.orId-antiiien Katzenberg, et al-
`ApplicationorPatentNo.:
`new
`Filedorlssued:
`Title: Aggaratus and Method for Remoteig Powering Access Eguiginenl: Over
`a 10/100 Switched Ethernet Network
`I hereby state that I am
`El
`the owner of the small business conwn identified below:
`@ an official of the small business concern empowered to act on behalf of the concern identified below:
`
`NAMEOFSMALLBUSINESSCONCERN Merlot Communications, Inc.
`
`ADDRESS OF SMALLBUSINESS CONCERN
`
`ul __
`ggghel , Connecggggg Q§§0 1
`
`I hereby state that the above identified small business ooncem qualifies as a small 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 congem
`identified above with regard to the invention described in:
`
`ID the specification filed herewith with title as listed above.
`El
`the sppiioalion identified above.
`5 the patent identified above.
`
`If the rights held by the above identified small business oonoem are not exclusive, each individual, concern. or
`organization having rights in the invention must file separate statements as to their status as smelt entities, and no rights
`to lhe iI'|VEnii0n are held by any Perafin. other than the inventor. who would not qualify as an independent inventor undel-
`37 CFR 15(0) if 1116! Person made the invention, or by any conoern which would not qualify as a small business concern
`under 37 CFR 1.9(d), or s nonprofit organization under 37 CFR 1.9(s).
`,
`
`Each person, concern, or organization having any rights in the invention is listed below:
`II no such erson, conoem, or organization exists.
`E] each suc person, concern, or organization is listed below,
`
`Separate statements are required from each named person, concern or organization having rights 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 small entity status priorto paying. or at the time of paying, the earliest of the issue fee or any maintenance
`fee dire after the date on which status as a small entity is no longer appropriate. (37 CFR 1.28(b))
`
`NAME on season SIGNING
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`R°“31“ M- Keen“
`
`TlTLE or PERSON lF OTHER THAN OWNER Chief Technology Officer
`
`ADDRESS or
`
`SIGNATURE
`
`lots. Time will vary depending upon the needs of the individual case Any
`Burden Hour Statement This form is estimated to take 0.2 hours to on
`Wasiiinglion DC 20231. DO N 'l' SEND EE3 OR C MPLETED FORMS To THlS ADDRESS. SEND ‘re Assistant Commissioner (or Patents.
`comments on the amount of time nu are 70%|-IITBG to com is this tomi a mild be sent to the chief lniomtation otrieei-, Patent 3.-to Tfsflemark or-ma,
`Washington‘. no 20231.
`
`AMX
`
`Exhibit 1038-00003
`
`AMX
`Exhibit 1038-00003
`
`

`
`Katzenberg et al.
`19723-36396
`
`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
`
`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.
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`Background of the Invention
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`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.
`
`AMX
`
`Exhibit 1038-00004
`
`AMX
`Exhibit 1038-00004
`
`

`
`Katzenberg et al.
`19723-36396
`
`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.
`
`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
`
`The invention will be more clearly understood by reference to the following
`
`description, taken in connection with the accompanying drawings, in which:
`
`Fig. 1 is a simplified schematic diagram of the remote power automatic
`
`detection system of the present invention, shown in conjunction with a single unit of
`
`20
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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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`AMX
`
`Exhibit 1038-00005
`
`AMX
`Exhibit 1038-00005
`
`

`
`Katzenberg et al.
`19723-36396
`
`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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`AMX
`
`Exhibit 1038-00006
`
`AMX
`Exhibit 1038-00006
`
`

`
`Katzenberg et al.
`19723-36396
`
`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. lf 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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`AMX
`
`Exhibit 1038-00007
`
`AMX
`Exhibit 1038-00007
`
`

`
`Katzenberg et al.
`19723~36396
`
`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
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`respectively of an RJ 45 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 100BaseX cable of 4 sets of unshielded twisted pairs, which
`
`AMX
`
`Exhibit 1038-00008
`
`AMX
`Exhibit 1038-00008
`
`

`
`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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`g: \ data \ mtelll lpatap \ 199.9 K 19 723-96‘ upp
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`AMX
`
`Exhibit 1038-00009
`
`AMX
`Exhibit 1038-00009
`
`

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`Exhibit 1038-00010
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`AMX
`Exhibit 1038-00010
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`AMX
`
`Exhibit 1038-00011
`
`AMX
`Exhibit 1038-00011
`
`

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`Exhibit 1038-00012
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`AMX
`Exhibit 1038-00012