CABLE MANAGEMENT CLOSURE FOR IMPLEMENTATION AT DISTRIBUTION POINTS
20170303011 · 2017-10-19
Assignee
Inventors
Cpc classification
H04B10/80
ELECTRICITY
International classification
Abstract
Example management closures (110) enable incoming optical and/or electrical signals to be connected to one or more subscribers (109) via an electrical distribution cable (102). Termination connections within the management closure (110) are connected to active electronic equipment (131) for modifying and/or enhancing the incoming signals. However, the connections between the central office (101), the active electronic equipment (131), and a subscriber (109) need not be made until the subscriber requests a service upgrade. Accordingly, the closure (110) allows for simple and low cost installation of the closure (110) before upgraded service is needed.
Claims
1. A method for providing upgraded service to a subscriber, the method comprising: providing a management closure suitable for being installed at a distribution point of a telecommunications network; installing termination blocks in the management closure, the termination blocks including insulation displacement contacts, wherein installation of the termination blocks includes terminating twisted wire pairs of at least one multi-pair active equipment cable to the insulation displacement contacts; and installing a multi-pair cable loop ON) in the management closure, the multi-pair cable loop including a plurality of segregated groups of twisted wire pairs, the multi-pair cable loop having an intermediate portion where an outer cable jacket has been at least partially removed to provide access to the segregated groups of twisted wire pairs and end portions where the jacket is intact, wherein installation of the cable loop includes routing the jacketed ends of the cable loop out of the management closure and managing the segregated groups of twisted wire pairs on separate conductor trays within the management closure.
2. The method of claim 1, wherein the termination blocks and the cable loop are installed at a factory.
3. The method of claim 2, wherein the twisted wire pairs of the cable loop are not cut in the factory.
4. The method of claim 1, wherein the twisted wire pairs of the cable loop are not cut during initial installation of the management closure, but are cut later at a time of an upgrade request and are then terminated to the termination blocks.
5. The method of claim 1, wherein two multi-pair active equipment cables are terminated to the termination blocks, and routed out of the management closure.
6. The method of claim 5, wherein the insulation displacement contacts include front insulation displacement contacts located at a front side of the termination blocks and rear insulation displacement contacts located at a rear side of the termination blocks, and wherein the two multi-pair active equipment cables are terminated to the rear insulation displacement contacts.
7. The method of claim 6, wherein the front insulation displacement contacts are electrically coupled to the rear insulation displacement contacts, and wherein the twisted wire pairs of the cable loop are terminated to the front insulation displacement contacts.
8. The method of claim 2, further comprising removing the outer cable jacket from the intermediate portion of the cable loop at the factory.
9. The method of claim 2, wherein managing the segregated groups of twisted wire pairs on the separate conductor trays comprises routing the segregated groups of twisted wire pairs onto the conductor trays at the factory.
10. The method of claim 1, wherein managing the segregated groups of twisted wire pairs on the separate conductor trays enables identification of the twisted wire pairs before and after subscriber service is upgraded.
11. The method of claim 1, further comprising routing an active equipment optical fiber into a fiber tray at the management closure.
12. A management closure for providing upgraded service to a subscriber, the management closure comprising: a closure body suitable for being installed at a distribution point of a telecommunications network; a plurality of termination blocks disposed in the closure body, the termination blocks including a plurality of insulation displacement contacts, at least one multi-pair active equipment cable including a plurality of twisted wire pairs terminated at some of the insulation displacement contacts; a multi-pair cable loop disposed in the closure body, the multi-pair cable loop including a plurality of segregated groups of twisted wire pairs, the multi-pair cable loop having an intermediate portion and end portions, wherein an outer cable jacket has been at least partially removed from the intermediate portion thereby providing access to the segregated groups of twisted wire pairs, and wherein the outer cable jacket is intact at the end portions of the cable loop, wherein the jacketed ends of the cable loop extend out of the management closure; and a plurality of conductor trays disposed in the closure body, each of the conductor trays managing at least one of the segregated groups of the cable loop.
13. The management closure of claim 12, wherein the conductor trays are color coded to a respective one of the segregated groups of the cable loop.
14. The management closure of claim 13, wherein the twisted wire pairs of the cable loop are intact during installation of the closure body.
15. The management closure of claim 12, wherein two multi-pair active equipment cables are terminated to the termination blocks.
16. The management closure of claim 15, wherein the insulation displacement contacts include front insulation displacement contacts located at a front side of the termination blocks and rear insulation displacement contacts located at a rear side of the termination blocks, and wherein the two multi-pair active equipment cables are terminated to the rear insulation displacement contacts.
17. The management closure of claim 16, wherein the front insulation displacement contacts are electrically coupled to the rear insulation displacement contacts.
18. The management closure of claim 12, further comprising a fiber tray disposed in the body, the fiber tray including a storage region and a splice region.
19. The management closure of claim 18, wherein the fiber tray is elevated over a bottom of the closure body so that the multi-pair cable loop extends between the fiber tray and the bottom of the closure body.
20. The management closure of claim 19, wherein the multi-pair cable loop extends between the termination blocks and the bottom of the closure body.
21. The management closure of claim 12, wherein the closure body includes a base and a cover.
22. A method for providing upgraded service to a first subscriber using the management closure of claim 11 installed adjacent an intercept box through which a distribution cable extends, the distribution cable being electrically connected to a central office and to at least the first subscriber, the method comprising: receiving a subscriber upgrade request from the first subscriber; cutting a twisted pair of the distribution cable to form a first cut end that is electrically coupled to the central office and a second cut end that is electrically coupled to the first subscriber; connecting the second cut end of the distribution cable to the first twisted pair of the cable loop at a second of the end portions of the cable loop, thereby connecting the first twisted pair of the cable loop to the first subscriber via the distribution cable; cutting the first twisted pair of the cable loop within the management closure to create first and second cut ends of the first twisted pair; and connecting the second cut end of the first twisted pair to one of the twisted wire pairs of the multi-pair active equipment cable at the termination block arrangement.
23. The method of claim 22, further comprising connecting the first cut end of the first twisted pair to a twisted wire pair of a second multi-pair active equipment cable at the termination block arrangement.
24. The method of claim 22, wherein the twisted sire pairs of the multi-pair active equipment cable and the second multi-pair active equipment cable are coupled to rear insulation displacement contacts of the termination block; and wherein the first and second cut ends of the first twisted pair of the cable loop is connected to front insulation displacement contacts of the termination block, the front insulation displacement contacts being electrically connected to the rear insulation displacement contacts.
25. The method of claim 22, further comprising: routing an optical fiber into the management closure; and splicing the optical fiber to an active equipment optical fiber at a fiber tray.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings, which are incorporated in and constitute a part of the description, illustrate several aspects of the present disclosure. A brief description of the drawings is as follows:
[0025]
[0026]
[0027]
[0028]
[0029]
[0030]
DETAILED DESCRIPTION
[0031] Reference will now be made in detail to exemplary aspects of the present disclosure that are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
[0032] The present disclosure relates generally to a management closure that enables incoming optical and/or electrical signals to be connected to one or more subscribers via an electrical (e.g., copper twisted pair) subscriber cable. Termination connections within the management closure are connected to an active electronics closure that holds active electronic equipment for modifying and/or enhancing the incoming signals. However, the connections between the central office, the active electronic equipment, and a subscriber need not be made until the subscriber requests service. Accordingly, the closure allows for simple and low cost installation of the closure before service is needed.
[0033] Referring to
[0034] Active electronic equipment 131 can be electrically connected to a termination block arrangement 113 disposed within the management closure 110. In certain examples, the active electronic equipment 131 can be disposed in an active electronic closure 130. In certain implementations, the active electronic equipment 131 includes equipment that enhances an electrical signal. For example, the equipment 131 may convert the signal to a higher transmission rate or enhance performance of the signal (e.g., using G.Fast or VDSL equipment). In certain implementations, the active electronic equipment 131 includes equipment that enhances an optical signal. In certain implementations, the active electronic equipment 131 includes equipment that converts an optical signal to an electrical signal and/or converts an electrical signal to an optical signal.
[0035] In certain implementations, one or more inputs of the active electronic equipment 131 are electrically connected to termination connection points at the termination block arrangement 113. For example, one or more first active equipment cables 132 can be routed into the management closure 110 and terminated at the termination block arrangement 113. In certain examples, these electrical connections can be made prior to any subscriber requesting service. In certain examples, these electrical connections can be made in a factory prior to installation of the management closure 110. In certain implementations, one or more outputs of the active electronic equipment 131 can be electrically connected to termination connection points at the termination block arrangement 113. For example, one or more second active equipment cables 134 can be routed into the management closure 110 and terminated at the termination block arrangement 113. In certain examples, these electrical connections can be made prior to any subscriber requesting service. In certain examples, these electrical connections can be made in a factory prior to installation of the management closure 110. While described herein as “inputs” and “outputs,” it will be appreciated that signals can be carried in both directions between the central office 101 and the subscribers 109. Accordingly, signals can pass through the active equipment 131 in both directions.
[0036] In some implementations, the inputs and outputs of the active electronic equipment 131 are connected to the rear side of the termination block arrangement 113 (e.g., at insulation displacement contacts at the rear side). In certain examples, the rear side of the termination block arrangement 113 has a first termination connection region 114 and a second termination connection region 115. The first active equipment cables 132 are terminated at the rear side of the first termination connection region 114 and the second active equipment cables 132 are terminated at the rear side of the second termination connection region 115.
[0037] A cable loop 120 extends from a first end 121 to a second end 122, which are disposed at or accessible from an exterior of the management closure 110. The cable loop 120 enters the management closure at a first cable port 111, is looped (see 123) around within the management closure 110 at a looping point 112, and exits the management closure 110 at a second cable port 111. In certain implementations, the cable loop 120 includes a plurality of twisted pair conductors (i.e., differential pairs). For example, a cable loop 120 can include between one and one hundred conductor pairs. In examples, the cable loop 120 can include at least about twenty conductor pairs. In examples, the cable loop 120 can include at least about fifty conductor pairs. Optionally, the conductors of the cable loop 120 are not electrically connected to the termination block arrangement 113 prior to receiving a subscriber activation request.
[0038] In certain examples, the twisted pair conductors are separated into groups with each group having twisted pair conductors of the same color sequence. For example, each group will have only one conductor or conductor pair with a first color of insulation (e.g., red), only one conductor or conductor pair with a second color of insulation (e.g., black), etc. In certain examples, the separation of the groups is maintained at the looping point 112 as will be discussed in more detail herein.
[0039] The management closure 110 is initially installed at or near an interception box 107. In some implementations, the ends 121, 122 of the cable loop 120 are disposed at the intercept box 107. One or more distribution cables 102 can be routed through the intercept box 107 when routed towards one or more subscribers 109. Each distribution cable 102 includes one or more twisted pairs 103 of conductors (i.e., differential pairs). For example, a distribution cable 102 can include between one and one hundred twisted pairs 103. In certain examples, the distribution cable 102 can include at least about twenty twisted pairs 103. In examples, the distribution cable 102 can include at least about fifty twisted pairs 103.
[0040] In some implementations, until service is requested, the distribution cable 102 is not electrically connected to the cable loop 120. As subscribers 109 request service (or upgraded service), conductors (e.g., conductor pairs) 103 of the distribution cable 102 can be connected to conductors (e.g., conductor pairs) of the cable loop 120. Connections can be implemented via termination blocks, optical splicing, etc.
[0041] In some implementations, the signals for subscribers arrive from the central office 101 via the one or more distribution cables 102. When service is requested, one or more conductors (e.g., a twisted pair) 103 of the distribution cable 102 are connected to the first cable extension end 121 and second cable extension end 122 at the interception box 107. For example, the distribution cable conductors can be severed so that a first severed end connects to one or more pair at the first cable extension end 121 and a second severed end connects to the respective pair at the second cable extension end 122. Accordingly, signals pass through the management closure 110 en route between the central office 101 and the subscriber 109.
[0042] As shown in
[0043] In some implementations, the signals for subscribers arrive from the central office 101 via one or more optical fiber cables 104. In such implementations, the management closure 110 includes a fiber tray 140 at which first ends of one or more optical fibers 145 are disposed. The other ends of the one or more optical fibers 145 are routed to respective inputs of the active electronic equipment 131. In certain examples, these electrical connections can be made prior to any subscriber requesting service. In certain examples, these electrical connections can be made during installation of the management closure 110. In certain examples, outputs of the active electronic equipment 131 that correspond with the fiber inputs are routed to the second termination region 115 at the rear side of the termination block arrangement 113.
[0044] One or more optical fibers 105 of the fiber input cable 104 can be spliced or otherwise connected to one or more of the optical fibers 145 at the fiber tray 140. In other implementations, the optical fibers 105 can be routed directly to the active electronic equipment 131. In certain examples, the optical fibers 145 or the optical fibers 105 are connected to inputs of the equipment 131 (e.g., a fiber to electrical signal converter) at the active electronic closure 130. In such implementations, the second cut end 127 of the cable loop 120 is routed to the termination block arrangement 113 to connect to one of the outputs of the active electronic equipment 131. The first cut end 126 becomes a dead signal carrier. In an example, the first cut end 126 may be routed to the termination block arrangement 113. In another example, the first cut end 126 may remain at the looping point 112.
[0045] For example, in
[0046]
[0047] In some implementations, the cable loop 120 is installed within the management closure 110. For example, the cable loop 120 can be installed within the base 150 of the management closure 110. In certain examples, the cable loop 120 is installed within the management closure 110 in a clean-room environment. In certain examples, the cable loop 120 is installed by positioning the ends 121, 122 of the cable extension 120 within the management closure 110 or base 150 and inserting the ends 121, 122 through the cable ports 111 so that the ends 121, 122 of the cable loop 120 protrude through the management closure 110 to an exterior of the management closure 110.
[0048] In certain examples, the cable jacket of the cable loop 120 is window cut and stripped away at an intermediate location of the cable loop 120 to expose the twisted pairs of wires. In certain examples, the cutting and stripping are implemented within the management closure 110. In certain examples, the cutting and stripping are performed when the management closure 110 is in a clean-room environment. The twisted pairs of wires can optionally be bundled into groups by helically wrapped separators (e.g., binder, string, twine, rope), cable ties, or other such separators. In certain examples, the twisted pair wires are organized in the cable 120 into separate groups often twisted pairs. For example, in the case of a fifty pair cable loop 120, the five groups of ten twisted pairs are routed uncut to five separate pivotal copper management trays 170. In certain examples, the each twisted pair in each group is a different color from the other twisted pairs of the same group. In certain examples, each group has the same sequence of colors.
[0049] In certain examples, the management closure 110 can include internal structure (e.g., trays) configured to segregate and separately manage each exposed group. This segregation assists in maintaining the groups and in preventing one or more twisted pairs of one group from being co-mingled with twisted pairs of another group. While the jacket has been stripped away, the twisted pairs preferably remain uncut until a service upgrade is requested or otherwise desired. Allowing the twisted pairs to remain uncut defers the cost of cutting and managing the cut ends of the twisted pairs until the service upgrade is to be made. Allowing the twisted pairs to remain uncut also reduces installation time of the management closure.
[0050] One or more conductor trays 170 are disposed within the interior of the management closure 110. The conductor trays 170 are configured to receive the twisted pairs of conductors of the cable loop 120. In particular, the conductor trays 170 form the looping point 112 for the cable loop 120. In certain examples, the conductor trays 170 maintain the separation of the groups of twisted pair conductors of the cable loop 120. For example, in some implementations, each conductor tray 170 may receive one of the groups. In other implementations, a conductor tray 170 may receive multiple groups that are each tied together or otherwise distinguished from each other. In certain examples, each group of twisted pairs is bundled from the other groups by a colored rope. In some such examples, the tray 170 receiving the group of twisted pairs is the same color as the rope wrapped around the twisted pairs. In other examples, the tray 170 can be color coded to the group within the cable extension to provide simple and/or sustainable identification of the twisted pairs after installation.
[0051] In certain examples, the conductor trays 170 are disposed towards the second end 152 of the base 150. The conductor trays 170 are mounted to the base 150 of the management closure 110. The conductor trays 170 are movable to enable access to each conductor tray 170. In certain examples, the conductor trays 170 are configured to pivot relative to the base 150. In certain examples, the conductor trays 170 are configured to slide relative to the base 150. In certain examples, the conductor trays 170 are configured to separate from each other and from the base 150. In certain examples, the conductor trays 170 are stacked on the base 150 one-on-top-of-the-other.
[0052] In certain examples, each conductor tray 170 is structured to receive a cable extension at a first end and to provide bend radius limiting for the cable extension while routing the cable extension back towards the first end. In certain examples, each conductor tray 170 can optionally define an open region 175 (see
[0053] A termination block arrangement 113 is disposed within the interior of the management closure 110 between the conductor trays 170 and the cable ports 111 (e.g., see
[0054] When cut ends of the distribution cable 102 are connected to one or both ends 121, 122 of the cable loop 120, the distribution cable 102 can be connected to the active equipment 131 via the cable loop 120 and the insulation displacement contacts at the front side of the termination block arrangement 113. For example, a first cut end 124 of a first twisted pair cable of the cable loop 120 can be routed to one of the insulation displacement contacts that is located at the front side of the termination block 113 and that is electrically connected to one of the rear insulation displacement contacts of the first group. Likewise, a second cut end 125, 127 of the first twisted pair cable of the cable loop 120 can be routed to one of the insulation displacement contacts that is located at the front side of the termination block 113 and that is electrically connected to one of the rear insulation displacement contacts of the second group. Thus, signals can effectively be routed from the central office to the intercept box 107, from the intercept box 107 to the management closure 110, from the management closure 110 to the active electronics box 130, from the active electronics box 130 back to the management closure 110, and from the management closure 110 back to the intercept box and on to the subscriber.
[0055] In certain examples, the rear insulation displacement contacts of the first group are located at one side of the termination block arrangement 113 and the rear insulation displacement contacts of the second group are located at an opposite side of the termination block arrangement 113. In certain examples, the termination block arrangement 113 includes one or more termination blocks. In some examples, the rear insulation displacement contacts of the first group are defined by some of the termination blocks and the rear insulation displacement contacts of the second group are defined by others of the termination blocks. In other examples, one or more termination blocks may include rear insulation displacement contacts of both the first and second groups.
[0056] In an example, each electrically connected pair of front and rear insulation displacement contacts is optionally monolithically formed. In an example, each termination block includes front insulation displacement contact terminations for ten twisted pairs electrically connected to rear insulation displacement contact terminations for ten twisted pairs. In other examples, the termination blocks can be any desired size and have any desired capacity.
[0057] A fiber tray 140 disposed within the interior of the management closure 110 between the termination block arrangement 113 and the cable ports 111. In some implementations, the fiber tray 140 is elevated relative to a bottom 153 of the base 150. Elevating the fiber tray 140 enables the cable loop 120 to be routed beneath the fiber tray 140. Optionally, elevating the fiber tray 140 enables the cables routed between the active electronic equipment 131 and the termination block arrangement 113 (e.g., the rear side of the block arrangement to extend beneath the fiber tray 140.
[0058] The fiber tray 140 is pivotally mounted to the management closure 110 such that the fiber tray 140 is offset from a bottom of the management closure 110 (e.g., see
[0059] As shown in
[0060] In certain examples, the termination block arrangement 113 is coupled to the base 150 so as to be positioned over the cable loop 120 so that the cable loop 120 passes between the termination block arrangement 113 and the bottom 153 of the base 150. In certain examples, the fiber tray 140 is coupled to the base 150 so as to be positioned over the cable loop 120 so that the cable loop 120 passes between the fiber tray 140 and the bottom 153 of the base 150. For example, the fiber tray 140 can be positioned to be elevated off the bottom 153 of the base 150 even when in disposed in the lowered position.
[0061] Prior to or during installation of the management closure 110, one or more twisted pairs or twisted pair cables are routed between some of the rear insulation displacement contacts at the termination block arrangement 113 and the inputs of the active electronic equipment 131 (see
[0062] As shown in
[0063] As shown in
LIST OF REFERENCE NUMERALS AND CORRESPONDING FEATURES
[0064] 100 portion of a communications network [0065] 101 central office [0066] 102 distribution cable [0067] 103 twisted pairs [0068] 104 fiber input cable [0069] 105 optical fibers [0070] 107 intercept box [0071] 109 subscriber [0072] 110 management closure [0073] 111 cable ports [0074] 112 looping point [0075] 113 termination block arrangement [0076] 114 first termination connection region [0077] 115 second termination connection region [0078] 120 cable loop [0079] 121 first end [0080] 122 second end [0081] 123 intermediate portion [0082] 124, 126 first cut end [0083] 125, 127 second cut end [0084] 130 active electronic equipment closure [0085] 131 active electronic equipment [0086] 132 first active equipment cables [0087] 134 second active equipment cables [0088] 140 fiber tray [0089] 145 optical fibers [0090] 150 base [0091] 151 first end [0092] 152 second end [0093] 153 bottom [0094] 154 sidewall [0095] 160 cover [0096] 170 conductor trays [0097] 175 open region