MXPA06005455A - Frame for optical fiber distribution and management, and associated methods - Google Patents

Abstract

The preferred embodiments of the present invention include an optical splitter module (100, 132) having connectorized optical fibers that are stored on the bulkhead faceplate (102) of the module (132). The module (100, 132) includes an optical splitter output harness (106, 130), for example, a ribbon cable assembly attached to the bulkhead (102) with rugged strain mechanism (104). The ribbon harness is converted to individual optical fibers with connectors which are stored on adapter receptacles (112) on the faceplate. Adapter receptacles (112) used may optionally be half receptacles when storage is the only desired function or may be full receptacles when access to the optical fiber ferrule tip is required. Access to the ferrule tip may be required for attaching fiber optic terminators to eliminate undesirable reflections caused by unterminated connectors. The module (100, 132) provides an administrative location for splitter outputs prior to being connected individually into service. The module also provides an administrative storage location for splitter outputs taken out of service as a temporary staging area.

Description

SYSTEMS AND METHODS FOR DISTRIBUTION AND ADMINISTRATION OF OPTICAL FIBERS Cross References to Related Requests The present invention is a continuation in part of the co-pending Patent Application of E.ii. Do not. / 714,814, filed November 17, 2003. The content of the aforementioned application is incorporated herein by reference in its entirety. BACKGROUND OF THE INVENTION In fiber-to-the-facilities broadband network applications, optical separators are used to divide the optical signals at various points in the network. The recent specifications of the network call for the incorporation of optical separators in distribution centers (FDHs) that are reintroduced outdoor boxes. These boxes allow easy reintroduction for access to the optical dividers allowing the ports of the separators to be used effectively and for ports of additional separators to be added on an incremental basis. To date, in typical applications, the optical separators are provided pre-packaged in modular housings of optical separators and are provided with separator outputs of connecting cables extending from the module. The connection cables of the separator outlet are typically provided with connectors with high loss low loss SC or LC connectors. This optical separator module or cassette provides a protective packing for the components of the optical separator in the housing and therefore provides easy handling for the components of the otherwise fragile divider. This method allows, for example, that the optical separator modules be added in an incremented manner to the fiber distribution center, as required. A problem may arise due to the lack of protection and organization of the connection ends of the output connection cables of the splitter. For example, these connection cables can sometimes be left free in a channel or cable conduit inside the box. This method of leaving an exposed optical component such as a high performance connector exposed in an open area leaves it susceptible to damage. If damaged, these high-performance connectors can cause delays in the service connection while the connectors are being repaired. Leaving the connection cables of the separator with connectors, free in a wiring channel, also exposes them to dirt and debris in the wiring channel. In current network deployments, it is imperative to keep optical connectors clean to maximize network performance.

Also in the current art, fiber connection cables are not organized in a conductive manner for fast service provision. In many cases the spacers may have sixteen or thirty two output connection cables packaged together making it difficult to find a particular connection cable. Also the package of free hanging connection cables can easily become entangled, causing additional delays in the service delivery. These entanglements can in fact cause a congestion and in some cases, result in a loss induced by bending on the connection cables causing a lower performance of the system. To solve some of these problems, a separate tray or storage box has been used to absorb the gap and / or store and protect the connecting ends of the output connection cables of the splitter. However, these auxiliary devices tend to occupy additional space and often hide the connecting cable in a box that can cause additional delays in deployment depending on how much time is required to access the tray or box. Therefore there is a need for a solution that does not occupy additional space and that provides direct access and identification to the ends of the output connection cables of the splitter. further, some network applications may require equipping the separator outputs with fiber optic terminators in order to reduce or eliminate the reflections caused by the unfinished separator outputs. Other methods of storing connection cables with connectors in cable channels or auxiliary trays may make it difficult to equip the output ports of the separator with fiber optic terminators. Finally, current methods tend to result in a dissociation of the splitter module, coming from the end of the output connection cables of the splitter. This is usually the result because the connection cable, once deployed, is lost in the middle of the other connection cables in the fiber bridge channel. When subscribers unsubscribe from the service, it is desirable to disconnect the output from the separator and redeploy or store it for a quick re-deployment. It is further desirable for administrative purposes to maintain the association of the separator module to the output connection cables of the separator so that the resources are used effectively over time. Fiber distribution centers can be located at or near ground level, or they can be fixed near the top of public utility poles. Since FDHs are frequently located outdoors, the boxes must be weatherproof. And, by reducing the number of binding lines on the outside of the FDH, the chances of moisture penetration are reduced, thus helping to provide an internal weatherproof volume for the box. As a result, most FDHs are accessible only from a front face through a door. Therefore, the service connectors located behind the front plate can be problematic since the removal of the front plate may be required. The removal of the front plate becomes difficult in an increased manner since service providers try to increase the number of connectors or drops, located inside a single box. As the number of falls increases, the size of the box and the size of the front plate increase. In addition, the weight and complexity of the wiring can be increased. When FDHs are installed on utility poles, large panel sizes can become difficult for the lineman to handle because the door must be fully opened to access the interior of the housing while the lineman is attached to the post and / or box. In order to accommodate the lineman, many FDHs installed on poles are equipped with balconies to provide a surface on which the lineman can stand while working inside the box. Typically a lineman climbs a ladder until he can step on the balcony. Transferring from the ladder to the balcony while using a tool belt can be complicated and dangerous. The safety procedures dictate that the lineman attaches a containment line or safety line from his safety cable collector to a structure on the post before transferring from the ladder to the balcony. In some cases, a lineman can connect his safety line to a structure that is not qualified to stop his fall. What is needed are some FDHs that are designed to be easily accessible from the ground level and when working on elevated platforms such as utility poles. These FDHs must provide an efficient deployment and interconnection of the fiber optic connections in them. In addition, FDHs must allow a lineman to open the box without undue risk of losing balance and the internal front plates must provide easy and secure access to the connectors located on the back of the FDH. The FDHs installed on poles must also be further configured to minimize the chances of having a lineman attached to a safety belt to an unskilled structure to stop a fall. SUMMARY OF THE INVENTION A preferred embodiment of the present invention is directed to a fiber distribution center box in a fiber-to-the-facilities network having an overlaid shelf of the subscriber in the box that includes a plurality of fiber optic connectors. termination forming a field of terminations and an optical separator shelf in the box having a plurality of optical separator modules. The optical separator modules have a plurality of ends of output connection cables of the separator where the ends of the connection cables have connectors and are located administratively and directly on the front plate of the splitter module. Preferred embodiments of the present invention include an optical separator module having connection cables with connectors that are stored on the front plate of the front plate of the module. The module includes an output cable collector of the optical separator consisting of, for example, of a ribbon cable installation attached to the front plate with a heavy duty strain relief mechanism. The ribbon cable collector is converted into individual connection cables having connectors that are stored on adapter receptacles on the front plate. The adapter receptacles used can optionally be receptacle means when storage is the only desired function or can be complete receptacles when access to the cap of the connection cables is required. Access to the ferrule may be required to join the fiber optic terminators to eliminate undesirable reflections caused by unfinished connectors. The module provides an administrative location for the outputs of the separator before they are individually connected in service. The module also provides an administrative storage location for separator outputs taken out of service as a temporary parking area before being reassigned and individually connected to service again. Another aspect of the present invention includes a method for installing associated optical length separator modules and fixed length connection cables, which store the ends with connectors of the connection cables in a position ready for deployment and then for individual connection of the separator outputs as required to connect the service to the subscriber terminations. After installing the separator module, the output connection cables are initially directed circumferentially around the field of subscriber terminations, are connected in a storage position and the gap of the connection cables is handled in the vertical channel. When a connection service order is given, the process first verifies if there is an available output port of the optical separator and if there is not, add separator modules to the system. If divider outputs are available, the method includes disengaging the connection cables from the storage position, connecting the output connection cables from the separator to the subscriber termination, directing the connection wires through a path reduced circumferential and storing the gap in half loops in the adjacent channel. If a subscriber is disconnected from the service, the output of the separator is disengaged from the subscriber termination, directed through an expanded circumferential path and connected to the original storage enclosure in the splitter module. Therefore, preferred embodiments of the present invention include configuring a fiber distribution center with optical spacer models having connection cables with fixed length connectors. Preferred embodiments are directed to placing the optical separator modules relative to other fiber terminations that need access to the optical separator ports. Another aspect of the preferred embodiments includes installing the connection cables in a configuration that requires a rearrangement and clearance of the minimum connection cables, still allowing a sufficient clearance to reach any of the. fiber terminations that require access to the splitter ports. Another aspect of the preferred embodiments includes optimally directing the connection cables to minimize and preferably eliminate congestion and control the clearance within the established limits of the box. In a preferred embodiment, all connection cables have the same length to facilitate manufacturing. The splitter modules all have the same length of connection cables, which also allows for flexibility to allow the installation of a separator module in any slot available within an overlapped panel regardless of the sequential order. Preferred embodiments of the present invention also provide a method of administering fiber in the box so that congestion does not occur due to rearrangement and rotation. The mode minimizes slack and any chance of access blocking due to fiber entanglement. further, the modality allows the rotation through time including the storage of initial connection cables, the service connection, the service release and the repeated storage to provide quick access to the connection cables for future use. The methods according to the preferred embodiments are anti-blocking and anti-congestion for the bridges directed in cable paths and overlapped panels for fiber. The methods of the preferred embodiment are completely contained within the limits of the box. An aspect of the present invention includes a communications network that includes a central node configured to select feeds of basic material from a local supply, a long-distance feed, a broadcast feed, a central office operatively coupled to the central node by a line of communications junction and a plurality of fiber distribution centers operatively coupled to the network. The fiber distribution centers include at least one termination shelf, at least one separator shelf having a plurality of optical separator modules and a channel for the administration of fiber. The fiber distribution center further includes a plurality of connection cable ends with separator output connectors located on the front plate of at least one optical separator module. The ends of connection cables are located on adapter ports on the front plate. The optical separator module further comprises a ribbon cable collector extending from the module. In another aspect of the invention, a fiber distribution center is provided for use in an optical communications network. The center includes a box that hosts a subscriber termination field consisting of numerous subscriber terminations. The distribution center further includes an optical separator shelf capable of containing one or more optical separator modules. The separator modules may include a front plate of the divider, a plurality of receptacles and a plurality of connection cables. In addition, the distribution center may include one or more address channels for routing the connection cables circumferentially around at least a portion of the subscriber termination field. Additional aspects of the invention may employ an articulated frame for housing the separator modules and / or subscriber termination fields. The articulated frame facilitates access to the rear portions of the separator modules and to the termination fields. The articulated frame can be used with conventional boxes, boxes having side panels installed pivotally to the rear panel of the box, or boxes employing a pivotally installed front portion and a fixed rear portion separated by a seal. Still other aspects can use a box installed in a public service pole and also have a structural member designed to receive a physical equipment to prevent falls. In addition, aspects of the invention may employ a pivotally installed parking frame for storing ends with connectors of connection cables when they are not connected to the subscriber terminations. The foregoing and other features and advantages of the systems and methods for the distribution and administration of fiber will be apparent from the following more particular description of the preferred embodiments of the system and method as illustrated in the accompanying drawings in which the characters of reference refer to the same parties through all the different views. The drawings are not necessarily to scale, rather emphasis being placed on illustrating the principles of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 schematically illustrates a broadband access network, for example, a fiber-to-the-facilities (FTTP) network using passive optical network (PON) components according to a preferred embodiment of the present invention; Figure 2 schematically illustrates additional details of an FTTP network according to the preferred embodiment of the present invention; Figure 3A illustrates an optical separator module in a fiber distribution network having connection cables with connectors according to a preferred embodiment of the present invention; Figure 3B illustrates an exemplary embodiment of an optical component module according to a preferred embodiment of the invention; Figure 4A schematically illustrates the installation of the connection cables of the optical separator module according to a preferred embodiment of the present invention; Figure 4B schematically illustrates the service connection configuration of the optical separator module according to a preferred embodiment of the present invention; Figures 5A and 5B schematically illustrate the installation of the connection cables of the optical separator module and the service connection configuration of the optical separator module, respectively, in a network having modules adjacent to each other according to a preferred embodiment of the present invention; Figures 5C and 5D schematically illustrate the service connection configurations between the adjacent fiber distribution centers according to alternative preferred embodiments of the present invention; Figure 6A illustrates one embodiment of a single amplitude spacer module together with one embodiment of a double amplitude module according to one aspect of the invention; Figures 6B-6H illustrate exemplary spacer module arrangements according to an aspect of the invention; Figures 7A-7E illustrate views of the fiber distribution center according to preferred embodiments of the present invention; Figure 8 illustrates a view of the internal components of the fiber distribution center box according to a preferred embodiment of the present invention; Figure 9 illustrates a schematic view of a box of the fiber distribution center having a side-by-side equipment configuration according to a preferred embodiment of the present invention; Figure 10 illustrates an embodiment of an FDH employing an articulated frame according to one aspect of the invention; Figure HA illustrates an embodiment of an FDH using a divided box; Figures 11B-11G illustrate various aspects and modalities of an FDH having a divided box; Figures 11H and 111 illustrate an exemplary method for using an FDH box having a divided housing; Figure 12A illustrates a modality of an FDH installed in a public service pole that has a physical equipment to prevent falls integrated thereto; Figure 12B illustrates a method for accessing a high FDH; Figure 13 is a flow chart illustrating a method for installing and connecting optical separator module connection cables according to a preferred embodiment of the present invention; Figure 14A illustrates a preferred embodiment of a single articulated parking panel for use in fiber distribution centers; and Figure 14B illustrates a preferred embodiment of a dual articulated parking panel for use in fiber distribution centers. DETAILED DESCRIPTION OF THE INVENTION The preferred embodiments of the present invention are directed to an optical separator module that is equipped with adapters for storing ends of optical separator connection cables with connectors. The adapters are located administratively on the front plate of the optical separator module, for example, but without being limited to, octal account arrays ideally suited to identify the separator ports having sixteen or thirty two output ports. The adapters according to the preferred embodiments are used to store or locate the ends with connectors of the optical separator for a quick location, identification, easy access and removal of the output ends of connection cables. According to the preferred embodiments, the optical separator outputs extending from the front plate on the module are wrapped again and secured to the adapters on the front plate of the divider. Preferred embodiments also include methods for installing associated optical length separator modules and fixed length connection cables, storing the ends with connectors of the connection cables in a position ready for deployment and then individually connecting the outputs of the separator as shown in FIG. require to connect a service to subscriber terminations. Figure 1 illustrates, schematically, a broadband access network '10, which for example can be a Fiber-to-the-facilities (FTTP) network using passive optical network (PON) components according to a preferred embodiment of the present invention. Figure 1 includes an optical line terminal (OLT) 12, a voice input 14 coming from a service network, a data entry from 16 coming from a service network, a video input 18 from a service network, a fiber from a division of length of wave 20, a passive optical separator 22, an optical network terminal (ONT) 24 and 26 a residence and an office building 28. The network 10 uses OLT 12 which receives input data streams from the service networks. By way of example, the OLT 12 can receive a voice input 14, a data input 16 and a video input 18. The OLT 12 can then output a multiple data stream on one or more optical fibers 20. In one In this embodiment, the OLT 12 can emit voice at a wavelength in the order of 1490 nm, data at a wavelength in the order of 1310 nm and video at a wavelength in the order of 1550 nm. The optical fiber 20 can carry data using, for example, wavelength division multiplexing (WDM) towards a passive optical separator (POS) 22. The POS 22 can receive data by a single fiber (the input fiber) and divide the data through a plurality of output fibers. For example, POS 22 can divide the input data through 8, 16, 32 or more output fibers. In a preferred embodiment, each output fiber is associated with a respective end user such as a residential end user 27 or a commercial end user in the office building 28. End user locations may employ optical network terminals (ONTs) 24, 26 to accept data in multiple and making them available to the end user. For example, ONT 24 can act as a demultiplexer by accepting a data stream in multiplex containing voice, video and data and demultiplexing the data stream to provide a separate voice channel to a user telephone, a separate video channel towards a television set and a separate data channel to a computer. The architecture described in conjunction with Figure 1 can be a point-to-multi-point PON construction, which uses, for example, spacer is 1:32 in a fiber center box within a distribution area. The architecture can be a 1: 1 fiber rich distribution between the fiber center and the client installation, or the architecture can be diluted 1: X where X is an integer greater than 1. The capacity of broadband services in the network 10 for distributing the source information may include, for example, data signals (622 Mbps x 155 Mbps (shared) and video signals (860 MHz, ~ 600 analog and digital channels, high definition television (HDTV) and video on demand (VOD).) Source information may consist of data, such as, for example, voice or video originating from a source such as a telecommunications service provider, hereinafter a service provider. Signaling can be achieved using a simultaneous transmission of wavelength division (WDM) and fiber sharing The network 10 can include optical network terminals 26 that are scalable, provide high bandwidth, applications multi-service serving residences and businesses of small to medium sizes. Network 10 includes passive components that are located outside the plant, i.e., outside the service provider's building and require minimal maintenance, since active components such as amplifiers are not required. The broadband access network 10 includes plug-in subscriber digital cards that have a broadband terminal adapter configured to receive a digitally multiplexed broadband data stream and which outputs a plurality of data streams of broadband demultiplexed for the respective subscriber cycles. Figure 2 illustrates an alternative implementation of an optical broadband access network 50. Network 50 may include a circuit breaker / OLT 52, a UPS, a 54 separator center, 56 residential ONTs, 58 small business ONT, 60 office parking ONT, a 64 separator and fiber-toward-facilities (FTTP) 62. In bandwidth applications Wide fiber-towards-facilities 64 optical separators are used to divide the optical signals at various points in the network. Typically in the FTTP 50 network the optical separators are located in both indoor and outdoor environments including a Central Office / Central Node, environmentally safe cabinets, boxes or fiber drop terminals. In some outdoor applications, optical separators have been deployed in sealed boxes that are not easily re-introduced. Preferred embodiments include optical separators incorporated in fiber distribution centers 54 that are re-introductory outdoor stop boxes. These boxes allow easy re-entry by line installers or other service personnel to access the optical dividers 64 allowing the separator ports to be used effectively and for additional separator ports to be added on an incremental basis. Preferred embodiments of the present invention can receive data from the optical separators that are provided pre-packaged in optical separator module housings that are installed in an overlay fiber panel to facilitate directing the interconnected bridges from the fibers in the fiber optic ports. subscriber adjacent to the divider outputs. This module of optical separator or cassette, provides a protective packaging and therefore the easy handling for the otherwise fragile components of the divider. The optical separator modules can be added incrementally to the superimposed panel. FTTP broadband networks are designed to achieve low optical insertion loss in order to achieve maximum network reach from electronics that have a fixed power output. Each component and optical subsystem used in the network is optimized to provide a minimum insertion loss. The optical loss budget in a preferred embodiment is approximately 23 to 25 dB with a passive separation of 1:32. Components and factors that contribute to optical loss include separators (1:32, single or cascaded), EDM, connectors (optical line terminal (OLT), DFD, separator, multipoint terminal, ONT), fiber attenuation ( at least three wavelengths: 1310 nm, 1490 nm, 1550 nm), and splicing. The center of separator 54 can serve in the order of 128 splice ports / rooms. It includes multiple distribution lugs, with connectors or fusion junction between the splice and the distribution center 54. The distribution centers used in conjunction with the preferred modalities are poles or mountable on the floor. Multipoint terminals can be with or without a separator and include several numbers of falls, both aerial or buried. The dividers 64 can be deployed by a center of the separator 54 or they can be deployed in smaller boxes. A fiber multipoint terminal terminal 65 is frequently used in conjunction with a public service pole 63 (Figure 2). Public service post 63 can be used to support conventional copper wire strands such as those used for the old simple telephone service (POTS) and those used for cable television (CATV). For example, the POTS filaments may consist of a plurality of twisted pairs and CATV may consist of coaxial cables. The public service post 63 may also support fiber optic rolls such as those used to supply the FTTP services. A fiber multipoint terminal terminal 65 may be attached to a public service post 63 and communicatively coupled with one or more connection cables contained in a filament. The fiber multipoint terminal terminal 65 can be spliced with connection cables using techniques known in the art. For example, the fiber multipoint terminal terminal 65 can be spliced with a connecting cable in a manufacturing or assembly plant at a predetermined location on a filament or multipoint fiber terminal terminal 65 can be spliced with a patch cable in the field by a Lineman or a person with other skills in a certain location. In a Passive Optic Network (PON) application (Passive Optical Network) Multipoint fiber terminal terminals are used as an interface between distribution cables and multipoint terminal cables. Typically the fiber multipoint terminal terminal 65 is installed by splicing a multi-fiber cable at a branch point on a wide fiber calculation distribution cable. Multipoint fiber terminal terminals can typically consist of 4, 6, 8 or 12 fibers and in some cases up to more fibers. A single cable is used as input to the terminal that contains the fibers with the aforementioned beads. By way of example, a power cable can have a central tube containing a plurality of individual connecting cables. Inside the fiber terminal 65 the multi-fiber power cable is separated into individual fibers and then terminated on an individual rugged outdoor connector / adapters, located on the outer surface of the box. The multipoint fiber terminal terminal 65 is therefore used to locate the PON cabling system near the room locations, such as a residence or office building, so that when a subscriber requires the service he can quickly connect an simple multipoint termination cable with connectors between the fiber terminal multipoint terminal and the Optical Network Terminal (ONT) in the home. In preferred embodiments, the optical connectors are used in the network to provide the desired flexibility however they are restricted to points in the network where flexibility is absolutely required. Optical connectors are required to provide flexible access to optical separator outputs. Preferred embodiments of the present invention provide the flexibility of the connector and still minimize optical loss by using the optical separator module with connection cables with connectors. The connection cables have standard SC or LC type connectors on the ends. Figure 3A illustrates an optical separator module 100 in a fiber distribution network having connection cables with connectors according to a preferred embodiment of the present invention. The module 100 can include essentially any number of output connection cables; however, typical deployments will use either 16 or 32 outputs per divisor module. The module 100 includes a front plate of the faceplate 102 having storage pockets 112. In a preferred embodiment, the optical spacer module 100 provides a high density wire collector 106 to protect the separator outputs extending from the divider. . The cable trap of the optical separator 106 is secured to the module 100 with a deformation compensation mechanism 104 to provide a high traction force and bending radius control. The compact nature of the cable collector 106 allows for greater packing density and better utilization of the space in the wiring channel. The collector of the module is converted into individual connection cables with connectors to allow the outputs of the separator to be individually managed and re-arranged. The module 100 can be equipped with either non-functional adapters or fully functioning adapters as means for storing connection cable ends. In a preferred embodiment, half of the non-functional adapters are used in applications that do not require fiber optic terminators other than for storage functionality. Fully functional adapters are used in applications that require a fiber optic terminator connection to an optical separator output port. Access to a connector sleeve of the connection cables may be required to join the fiber optic terminators to eliminate unwanted reflections caused by unterminated connectors. The module provides a starting position from which optical separator connection cables can be deployed and where they can be returned once they are removed from service. This administrative use of the adapters provides protection for the ends of the connection cables with connectors, maintains a clean end of the connector and enables a fast service connection and deployment. Preferred embodiments of the present invention are directed to configuring a fiber distribution center with optical spacer modules having connection cables with fixed length connectors. One aspect of the preferred embodiment determines where to position the optical spacer modules relative to other fiber terminations that need access to the spacer ports is optical. Preferred embodiments also provide for the installation of connection cables in a configuration that requires a reordering of minimum connection wires still allowing a sufficient clearance to reach any fiber termination that requires access to the splitter ports. The methods for installing patch cables of the optical splitter module include determining how to extend the connecting wires to provide an optimal stroke pattern that is not congested and where the clearance can be controlled within certain limits of the box. The methods according to the preferred embodiment of the present invention include the manufacture of all connection cables of the same length to facilitate the manufacture and ordering of the client. All the separator modules have the same length of connection cables to also allow the ease of flexibility to allow a separator module to be installed in any available slot inside the overlapped panel regardless of the sequential order. While fixed-length connection cables are preferred for many implementations, the modalities are not limited to them. Variable length connection cables may also be used if desired. A preferred embodiment of the method for installing the connection cables of the separator module also provides for the administration of fibers in the housing so that reordering and turning do not congest this handling. To achieve this, play is minimized and any chance of blocking access due to fiber entanglement is minimized. Preferred embodiments allow rotation through time including storage of initial connection cables, service connection, service release and repeated storage to provide quick access to connection cables for future use. The methods of the present invention are anti-blocking and anticongesting for extended bridges in cable paths and overlapping fiber panels. The method of the preferred modality is completely contained in the limits of the attached document. Figure 3B illustrates a view of the optical component modules (OCM) 107A-D in a frame structure of the module 101 a fiber distribution center box according to a preferred embodiment of the present invention. The FDH configuration in a preferred embodiment provides physical fiber management equipment on one side of the cabinet. This allows the bridges to be traced between the termination shelf and the divider shelf. The excess of slack can be handled on the side of the cabinet using slack rings. According to a preferred embodiment, the OCM 107-D modules can also be equipped with connection cables 105 to reduce the number of connections in the network. Each of the modules shown in Figure 3B contains a 1x32 spacer with connection cables provided on the entrance and the 32 exits. The ends with connectors of the connection cables are stored on adapters of the front plate 103 on the front of the module. These storage adapters provide a familiar location scheme for the reserve connection cables so that the connector ends can be identified and quickly connected to the distribution fibers. The space on the adapters is the same as on the panels of the standard connector. In preferred modalities, OCM modules can also be equipped with standard terminators. The finished modules can be equipped with front sheet adapters, with terminators on the front of the module. The modules connected by means of connection cables and equipped with storage adapters, are equipped with terminators on the back of the panel. Figure 4A schematically illustrates the installation of the optical separator module connection cables 138 in accordance with a preferred embodiment of the present invention. A preferred embodiment of the present invention includes a cabling installation arrangement 125 for the FDH 127 including the spacer modules 132 installed in an increased manner on a shelf 129 adjacent to the subscriber termination field 128. The optical fibers with connectors 138 from the separator modules 132 having a fixed identical length extend in a circumferential path 130 surrounding the subscriber termination field 128. The end connectors of the otic fibers 138 are stored in a position on the front of the separator module 132 using the storage receptacles 134. The arrangement, according to a preferred embodiment, employs a fan placement traversed so that the connection cables of the separator module can be installed without disturbing the installation of the connection cables already connected to the field of subscriber terminations 128. This provision of installation according to a preferred method of the present invention also ensures that the separator module 132 can be preconfigured with the connectors of the connecting cables 135 in the storage position and left in the storage position through the installation process of the connection cables. Figure 4B schematically illustrates the service connection configuration 150 of the optical separator module according to the preferred embodiment of the present invention shown in Figure 4A. Preferred embodiments of the present invention include a service connection method for connecting a subscriber to the service by first releasing an individual separator output connection cable 138 from the storage position in the separator module 132 and then directing the connection cable to the desired subscriber access 152. Since the connection cable frame has been preconfigured and extended circumferentially around the subscriber termination, the connection cable 138 inherently reaches any of the desired subscriber ports within the target population simply by a reduction of circumferential path distance. By reducing the circumferential path, the gap of the connecting cables exhibits an additional gap. The additional gap can be collected using half-clearance rings in the vertical channel 153A, B or fiber optic channel where the connection cables extend. The haphazard nature of the connector spacer output connection cables to the subscriber ports 152 results in a family of half-rings of various sizes 154 which are handled in the vertical channel 153A 153B within the confines of the cabinet 149. Figures 5A and 5B schematically illustrate the installation of the connection cables of the optical separator module 132 and the service connection configuration of the optical separator module, respectively, in a network having modules adjacent to each other according to a preferred embodiment of the present invention. A preferred embodiment of the present invention includes a method for connecting subscriber ports that are in an adjacent field but not initially contained within the circumference of the connecting cable frame of the splitter. In this extension the output connection cables of the separator are extended to the adjacent field 180 which due to a juxtaposed position, has a trajectory at the same distance towards the subscriber's access inside the circumference. The subscriber ports 192 in the adjacent field are also assigned randomly so the resulting gap is handled using a family of half-rings of several measures in the vertical channel 176. Figures 5C and 5D schematically illustrate the connection configurations of service 194, 206 of the termination and separation fields in the adjacent fiber distribution centers according to a preferred embodiment of the present invention. In a preferred embodiment, the connection cables 198, 208 of the left module 196, 214 extend circumferentially in the clockwise direction while the right connection cables 204, 210 of the module 202, 216 extend circumferentially in the counterclockwise direction . In this mode, the fiber distribution centers are located adjacent to each other, each having a separator shelf with separator modules and a termination shelf. Counter-rotation feeding provides the extension of the separator module output connection cables circumferentially around the subscriber termination fields. The gap of the connection cables is stored in the vertical channels 200, 212. A preferred embodiment includes a method of removing a separator connection cable from the subscriber access and either re-deploying that connection cable. output to a new subscriber or storing the connection cable back to its original storage position in the splitter module. The method is completely anti-blocking and anti-congestion due to planned slack handling.

Most modalities of optical spacer modules 132 used in FDH 127 may have 16 output ports or 32 output ports depending on a particular network configuration which may include considerations for an optical budget associated with optical separators and range of associated network. Figure 6A illustrates a single width module 222 having a width (Wl) 230 together with a double width module 224 having a width (W2) 232 that is of the order of two times that of Wl 224. The separator modules optical devices 222, 224 may have a physical configuration in which the output ports terminate on the front plate of the faceplate 227, 229 using connectors and / or receptacles 228, 238, 240 or alternatively with output ports in the form of connection cables 138 that extend from the front plate of the front plate and are collected and placed on storage ports 226, 234, 236 located on the front plate as shown, for example, in Figure 4A. In at least one design implementation, a 16-port module 222 can be deployed in a single-width module Wl 230 having output ports or storage ports arranged in a single column 226 of sixteen on the faceplate 227. And, of According to the implementation of the same design, a 32-port module 224 is a double-width module W2 232 having output ports and storage ports arranged in two columns 234, 236 of sixteen each on the front plate 229. When It uses with connection cables and storage ports, the manifold of extendable multi-fiber connection cables and the disconnection point associated with individual connection cables, occupies space in the housing to store the protective disconnection point device that becomes of multi-fiber cables to individual connection cables. The space for storing the disconnection point, or transition 131 (Figure 4A) device is designed to allow either the disconnection points from the sixteen output ports 222 to be an access module of thirty two outlets 224. In addition , the space for storing the disconnect point device can be located at a fixed distance along a circumferentially extending spacer exit frame. Therefore, the space in the frame placed to mount spacer modules corresponding to the fixed storage space for the disconnection point devices should allow the installation of only two sixteen exit modules 222 or one spacer module of thirty. and two output ports 224. In certain situations, it may be desirable to employ a configuration that uses an installation sequence in which a 16-port module 222 is interstitially installed between two 32-port modules 224 with no space between the adjacent modules. Such a configuration can create problems if an inadequate space is provided to accommodate the transition 131. Examples of the problems can include blocking and congestion. A pairwise installation of a single width module 222 (eg, a 16 output port module) in a double width slot can be used to preserve the mapping of disconnect point devices of the equal length 131 cable frame that they are stored and secured remotely from a separator module in a designated storage area 133 of the housing 127. The embodiments of the invention use structures and methods that alone or in combination dissuade the user from installing a double-width module of 32. ports 224, immediately adjacent to a single-width module of 16 ports in situations where single-width modules of 16 ports were not installed in pairs, ie, two 16-port modules installed immediately side by side. The techniques used in the preferred modalities, employ an automatically spaced fastener to substantially preserve the allation by pairs of 16-port single-width modules in the same position as 32-port dual-width modules. Figure 6B illustrates a modality using a single frame mounting plate configuration for the spacer modules and a single fastener configuration associated with the spacer module to ensure that the two sixteen port single width spacer modules 260 are alled in a pairwise arrangement within the same space that would otherwise accept a single thirty-two port 254 separator module. Figure 6B includes a front plate 250 having a top mounting support bar 251A and a lower support bar 251B defining an opening 257 for receiving double-width spacer modules 254 and single-width spacer modules 260. Double-width modules 254 include a pair of upper mounting holes 256A, pair of spacer holes. lower assembly 256B on the faceplate along with a first group of receptacles 255A and a second group of receptacles 255B. The single-width modules 260 include an upper mounting hole 261A and a lower mounting hole 261B and a single group of receptacles 263. In addition, single-width modules 260 and / or double-width mounting modules 254 may include mounting retention An FDH frame is provided with a front plate 250 which provides an opening 257 for receiving spacer modules 254, 258 in combination with mounting holes that receive spacer module retainer circuits immediately above and below the opening in the front plate . The pattern for the mounting holes of the module on the front plate of the frame FDH consists of four holes for each module of double width 254 which is divided into two upper holes 256A and two lower holes 256B with respect to the opening. The configuration is only ordered so that each set of holes is displaced towards the center so that it is not. they are equally spaced at the center where they would normally be expected when mounting single-width modules of 16 ports in the same space. This unique front sheet mounting arrangement ensures that a double width module 254 can not be alled immediately adjacent to a single width module 260 unless two single width modules 260 have been alled in a pairwise array. Ensuring a pair allation this in turn forces the correct utilization of a storage area for splitter outlet connection cable release point devices on the FDH frame that are remotely located from the spacer modules at a fixed distance of the separator module along the circumferential length. As part of the solution a 16-port single-width module with a spacer feature uniquely formed above and below the module is equipped so that the single-width module 260 can be alled in the opening of the front sheet while allowing the fastener is slightly out of center to the left or right. The unique fastener feature is a physically formed bilobar orifice 261A, 261B which allows the single-width module holder to move left or right over the allation to align with the offset orifices. In addition, the oblong hole on the single-width module 260 is uniquely formed to allow a standard pin typically used for this type of module to be fixed in place either to the left or to the right. This oblong hole is configured as a single heart or bilobar so that it engages the pin eye either to the right of the center when the single width module is installed in the left position or to the left of the center when the single width module is installed in the right position. Essentially the heart-shaped slot spacing the fastener spans the fastener to the left or right while retaining adequate force to seat the buttonhole and to locate and secure the module firmly in place without a subsequent displacement within the opening of the front plate. Figures 6C-6H illustrate the aspects of the closing mechanism used to align 16 and 32 port separator modules in a desired pattern. Figures 7A-7E illustrate views of a fiber distribution center according to a preferred embodiment of the present invention. The fiber distribution center (FDH) according to a preferred embodiment, manages the connections between optical fiber cables and passive optical separators in the Exterior to the Plant (OSP) environment. These boxes are used to connect the power and distribution cables by means of electromagnetic power separator providing the distributed service in an FTTP network application. The FDH of the preferred embodiment provides a vital cross-connect / interconnect interface for the optical transmission signals at a location in the network where fiber centering, operational access and re-configuration are important requirements. In addition the FDH is designed to accommodate a range of sizes and fiber numbers and supports the installation of connection cables, graduates and separator is from the factory. According to preferred embodiments, the FDH is provided in pole mounting or pedestal mounting configurations. The same cabinet and work space are available in both pole mounting units (Figures 7A and 7B) and pedestal mounting (Figures 7C, 7D and 7E). Three measurements of FDH are typically available, for example, to correspond to three different feed accounts, for example, 144, 216 and 432; however, additional FDH measures can be used without limitation. The modalities of the FDHs 280, 290, 300, 310, 320 provide termination, splicing, interconnection and 'separation in a compartment. The boxes accommodate either metal or dielectric OSP cables through a sealed grommet inlet. The cables are secured with standard grippers or other means known in the art. The FDH can also provide a base for the metal members and for the cabinet. Boxes 280, 290, 300, 310 320 provide environmental and mechanical protection for cables, splices, connectors and passive optical separators. These boxes are typically manufactured from heavy gauge aluminum and are rated NEMA-4X and provide the necessary protection against rain, wind, dust, rodents and other environmental contaminants. At the same time, these boxes are kept light for easy installation and breathable to prevent the accumulation of moisture in the unit. An aluminum construction with a heavy powder coating finish also provides a corrosion resistance. These boxes are accessible through secure doors that are locked with a standard tool or padlock. Figure 8 illustrates a view of the internal components of a fiber distribution center box 350 according to a preferred embodiment of the present invention. The FDH housing 350 can be configured in a number of different ways to support the fiber cable termination and the interconnection of passive optical spacers. The configuration illustrated in Figure 8 provides a termination shelf 352, a separator shelf and optical component modules 354, a splice shelf 356, and a fiber handling channel 358. The termination shelf 352 can be based on a line of standard central distribution center boxes (MDC) which provides complete handling for fiber terminations according to a preferred embodiment of the present invention. In a preferred embodiment, the termination shelf is predetermined in the factory with a connecting cable containing either 144 fibers or 432 fibers. This cable connection is used to connect services to the extended distribution cables to residences. Distribution fibers end on certified connectors. The termination shelf can use 12-pack or 18-pack adapter panels, for example, that have been ergonomically designed to provide easy access to fiber terminations in the field. These panels can be mounted on an articulated front plate to allow easy access to the back for maintenance. The bridges are organized and protected while passing through the handling section of the fiber 358 of the box. The spacer shelf 354 can be based on a standard fiber overlay panel that accepts standard optical component (OCM) modules that hold optical separators according to a preferred embodiment of the present invention. In preferred embodiment, the splitter modules, or cassettes, are simply designed to snap into the shelf and therefore can be added incrementally as needed. The separator shelf 3354 serves to protect and organize the input and output fibers connected to the cassettes. Separator shelves 354 are available in various sizes and the shelf size can be optimized for different OCM module configurations. Figure 9 illustrates a schematic view of the fiber distribution center housing 380 having a side-by-side equipment configuration according to a preferred embodiment of the present invention. There are two adjacent termination shelves 388, 390 and two adjacent spacer shelves 384, 386, separated by a central fiber handling channel 382 according to a preferred embodiment of the present invention. The FDH can be installed on public service poles or in pedestal arrangements that require the back of the housing to remain fixed. In these situations, it is not possible to access the cables or fiber terminations through the back of the cabinet. A normal administration of an FDH may require a line installer to access the back of the terminating front plate to perform maintenance operations on the subsequent connectors. One such operation is the cleaning of a connector to remove dust or contamination that could prevent the performance of the components contained inside. In addition, the back of an FDH box may have to be accessed for fiber problems that require immediate solution such as those that may occur with fiber breakage or fiber crush. In addition, it may be necessary to access the back of the housing to add cables as in the case of maintenance improvement or in the case of making a branch junction to direct fibers designated to alternate locations using an FDH as the point of origin. In circumstances such as those immediately identified above, access to the back of the housing can be difficult if the back door or access panel is not provided. Gaining access to the back of such a box may require the dismantling of the frame of the equipment and / or wiring apparatus to provide access to the connectors or fiber cables. The orderings to provide access behind the frame must be carefully planned to minimize the movement of fibers in operation. For example, a sort can be sighted to move the endings and not the splitter fibers. Such ordering can put undue stress on the terminations and / or connection cables because a section of the device is movedwhile another remains stationary. The device that includes a partial movement to access the connectors may not be adequate to add additional capacity to and maintenance of the cabling system. Sliding appliance trays or incunable sheet metal panel appliances tend to create stress points on the fiber cables and block certain other areas of the frame for maintenance access and therefore may not be desirable alternatives for the boxes that have removable back panels. Figure 10 illustrates a preferred embodiment of an FDH box 301 that is designed with a frame of unique oscillating structure 322 that oscillates the entire frame including the optical connectors, spacer and splices to open 90 degrees or more to allow access to all Optical components for cleaning and testing and cables for maintenance or additions. The swing structure design provides the necessary provisions to add additional cables to the unit for future use that may require full access to the back of the cabinet. For example, an access for rear penetrator punches 320 with the swing frame in the open position is possible. Water-proof feeding passages can be installed when the punches are removed and the multi-fiber cables can then be passed through the feed passages and into the box. One modality of the FDH 301 cabinet is equipped with a 326 single-point oscillating structure release fastener that provides easy access to the back and securely closes the frame from its place when it is closed. In addition, locks can be provided to keep the frame open at several angular increments to reduce the chances of injury for a lineman when working on the components located behind the front plate 335. Frame 322, when equipped with locks to keep it open, it is referred to as a frame with automatic closing. In the embodiment of Figure 10, the entire frame is articulated providing a single point of flexure for the fiber cable extended towards the frame. This articulation point is carefully constructed in the factory to control the fiber channel; and, therefore, the fiber channel at the point of articulation, is not subject to the manipulation of expertise in the field. In particular, the articulation of frame 324 and the physical equipment that extends the cable are designed to ensure that channel spokes recommended by the manufacturer are not violated when the frame is opened or closed. For example, the frame 322 may have connecting cable channels 153A, B adhered thereto so that the gap associated with the remainder of the fixed connection cables while the frame 322 moves through its range of motion. In addition, transitions 131 and transition area 133 can be located on the frame 322. In this configuration, the transitions 131 can be accessed from above when the frame 322 is in an open position. To ensure that the input fibers and connection cables are not disturbed or deformed in an unauthorized manner, the housing 300 can be configured in a factory or plant, so as to have bundles of cables arranged around a link 324. Preconfigure the housing 300 reduces the probability that the wiring is performed incorrectly.

In particular, a preferred embodiment of the housing 301 includes, among other things, an upper panel 302, a first side panel 304, a second side panel 306, a lower panel 308, a rear panel 309, a first door 310 and a second door 312 which collectively constitute the exterior dimensions and structure of the housing 301. In addition, the housing 301 may include one or more portable lugs 318 to facilitate deployment of the housing 301 in a desired location. The first and second doors 310 and 312 can each be pivotally mounted by means of an articulated edge 313, 3315 to facilitate access to the components installed inside the housing 301. In addition, the first and second doors 310, 312 can employ a assembly of projection 316 and channel 314 to facilitate resistance to tampering and impermeability to water. The channel 314 can operate in conjunction with an elastomeric seal material to further facilitate a waterproof seal. The housing 300 may further include an edge 307 running along an interior portion of the top surface 302, first side surface 304, second side surface 306 and bottom surface 308 to further facilitate a waterproof seal when the first and second doors 312, 314 are closed. A lock 311 may be installed in a door to discourage unauthorized access to the interior volume of the housing 301. The housing 301 includes an oscillating structure 322 that is hinged along the side opposite the joint 324 for removal from the interior volume of the housing 301. When the structure 322 is in the open position, as shown in Figure 10, the rear feeding passages 320 are accessible together with the cable management tray 328, the rear end plate of the separator frame 330 and the rear termination connections 332. In contrast, when the oscillating structure 322 is in the closed position, only the components on the front front plate 335 are readily accessible. For example, the front plate of the termination field 334 and the front plate of the frame of the separator 336 are accessible when the oscillating structure 322 is in the closed position. The trend of higher capacity fiber distribution centers creates additional problems concerning the subsequent access of optical components and cables. Along with other dimensions of the box, the frame width must be increased to accommodate the increased termination capacity that includes an increased number of connectors, splitter modules, splices and fiber bridges. In addition to the problems described in conjunction with the frame of the oscillating structure of Figure 10, additional problems may arise while increasing the width of the FDH frame of the oscillating structure 322. While increasing the width of the frame of the Oscillating structure 322 The cabinet width must be increased proportionally to accommodate space between a frame of oscillating structure and the side wall of the housing since the frame opens swinging. At a certain point the width of the entire cabinet grows beyond conventionally acceptable widths, especially for utility pole installations, when using the structure of oscillating structure inside it. While the width of the frame needs to be increased to accommodate, say for example, a larger field of terminations, the proportional increase of the frame of oscillating structure may not be acceptable due to the addition of even more width for the housing to accommodate the oscillating structure. Figure HA illustrates an embodiment of a fiber distribution center 383 capable of accommodating large termination fields and large oscillating structures associated therewith while minimizing the additional width of the housing necessary to accommodate the oscillating structure 322. Center 383 may include, among other things, a back box portion 387, a front box portion 385, a tie line 381 and one or more access door panels. The center, as illustrated, includes a first access door 389A and 389B. The center 383 includes a box designed with a vertical spacing 381 over the entire side wall of the housing thus allowing the front section of the housing to be completely separated and hinged away from the rear section of the housing which remains fixed. The separation of the housing means that the total closure is separated and therefore a reduction of the total box width is needed to achieve a frame configuration of oscillating structure, since the additional width that would be necessary to allow a space between the frame of oscillating structure and the side of the housing is greatly eliminated. The separate housing is achieved using a particularly strong rear section 387 designed as the only fixed, or stationary, structural member of the box. The housing is spaced apart in a position along the depth to provide sufficient stiffness of the side wall of the rear section 387 to ensure structural integrity for the entire frame by means of a rear section and a stiff joint. Since an FDH is typically an environmental box, the partition 381 in the housing must be sealed to protect it against water and other environmental factors. Therefore the back section and the frame are joined with a compression seal in the partition 381 that serves as an environmental barrier. To achieve an environmental seal the sturdy hinge 391 which serves to support the entire frame section of the housing is located outside the moisture seal to allow a continuous seal to extend around the gap. In addition, the entire rear section of the housing is covered by an upper rain shield 393 that provides a roof for the complete housing include the separation section. The joint is designed and configured so that the curve radii of the fibers are handled in an acceptable manner. In addition, the separate section is joined by two quick-release retention circuits inside the housing and accessible only through the previous doors. These retention circuits quickly actuate the release to divide the frame section away from the back to provide quick access. The retention circuits easily pull the enclosure back and provide compression to complete the environmental seal on the separation when closed. The housing 383 can also be equipped with oblique cable entry channels to transport moisture away from the cable seals. The oblique entrance, if used, is associated with the rear section of the box. The rear section 387 of the housing provides a single cable management scheme to provide a rear or side entry. The rear entry is provided in much the same way as conventional boxes by means of an oblique positioner to transport moisture away from the cable seals. The rear section of the separate housing is designed in such a way that the side sections are large enough to accept the same positioners thus also allowing the entrance of the side cable in the box. Figures 11B-11G also illustrate separate box modes. Figure 11B illustrates a top view of the housing 440 showing the upper surface 442 consisting of a rain guard 446. Figure 11C illustrates a view showing a rear surface 444 and a public service post mounting bracket 445A- D. Figure 11D illustrates a side view of a box 440 showing a protection against rain 446, the front portion 448, central portion 447 and rear portion 444. In the embodiment of Figure 11D, the rear portion 444 remains fixed by being held on a utility pole. The central portion 447 is pivotally attached to the rear portion using a hinge and the front portion 448 is pivotally attached to the central portion 447 using a hinge 450. Figure HE illustrates a front view of a box 441 showing, among others a mounting area of optical splitter 456, a subscriber termination field 458, a cable conduit channel 454 and a first door 452A and a second door 452B. Figure 11F illustrates a box 459 having a rear portion 444 and a joint 450 pivotally attached to the central portion 447. The central portion 447 is in an open position and is disengaged from the rear portion along 3 edges. The housing 459 further includes racks 460, optical separator module mounting areas, subscriber termination fields, etc. Figure 11G illustrates a perspective view showing the back portion of the housing 459. The retention circuits 464 stop the central portion 447 in a closed position. Figures 11H and 111, together, illustrate an exemplary method for using FDH box modes using one or more oscillating frames. First, a determination is made as to whether the housing uses an oscillating frame 322 (step 337). If no oscillating scaffold is used, the housing is accessed using conventional techniques known in the art (step 339). If an oscillating frame 322 is identified in step 337, a determination is made as to whether the housing is a spaced box (step 341). If the housing is not a box with separation, the doors of the housing are opened (step 343) and the flow of the method goes to the input of step 351. In contrast, if a box with separation is identified in step 341, it is open the doors of the housing (step 345) and then one-or-more compression retention circuits are disengaged (step 347). Compression retention circuits are used to keep the housing joint in compression to facilitate water impermeability. After the compression retention circuits are disengaged, the flexible portion of the housing is moved to its open position (step 349). After step 349, the flow of the method from path No of step 341 meets the flow of the main method. The oscillating frame 322 is disengaged (step 351) and the frame rotates to an open position (step 353). After the frame is in the open position, a determination is made as to whether the frame structure is equipped with a lock mechanism to maintain the structure at a desired angle with respect to the housing (step 355). If no lock mechanism is present, the flow of the method goes to the input of step 359. In contrast, if a lock mechanism is present, the lock is operated to keep the frame open in a certain position ( stage 357). Then a desired service is performed (step 359). By way of example, a desired service may include repairing a damaged or worn components inside the box, inspecting some components inside the box, connecting a subscriber, disconnecting a subscriber, adding additional components such as optical separator modules to the housing or remove some components from the box. Now with reference to Figure 111, after the service is performed, a determination is made as to whether the frame structure is locked in an open position (step 361). If the frame is not locked in the open position, the method flow goes to the input of step 365. In contrast, if the structure is blocked open, the lock is disengaged (step 363). The frame is then closed (step 365) and locked in a closed position (step 367). A determination is made as to whether a box with separation is in the open position (step 369). If a box with separation was not used, the flow of the method goes to the input of step 375. In contrast, if a box with separation was used and it is open, the appropriate housing section is closed (step 371) and the compression retention circuits are activated (step 373). The doors of the housing are then closed (step 375) and blocked if necessary. Commonly the FDH box is mounted on utility poles at an elevation that can not be accessed by a lineman standing at ground level; and therefore, the line installer typically accesses the housing by climbing up to the lift of the box. Frequently the boxes are installed in conjunction with a utility platform or balcony that is a permanent device attached to the housing post that allows a lineman to stand in front of the housing while making the circuit connections. Typically a lineman climbs a ladder or steps up to the balcony lift and then transfers over the platform to conduct operations. The standard safety procedures used in the art require that the lineman be secured in appropriate safety mechanisms in conjunction with a safety frame to stop a fall in the event of a fall while climbing the ladder, transferring to the balcony or while work on the platform. Typically provision is made for a safety catch and access together with housing facilities such as FDH facilities. Boxes manufactured for use in copper plant installations (such as old simple telephone system or POTS installations). they were typically manufactured from heavy-gauge steels and therefore provided adequate strength to secure safety frames directly to the box. However, the new boxes are constructed from aluminum and other lightweight materials, resistant to corrosion to provide an easier installation and to provide added protection against exposure to long-lasting elements. These light boxes do not provide adequate structural strength to reliably stop a fall if a safety line is attached to it. In typical field operations, a lineman can transfer a ladder to the platform or balcony to start working in a raised box. The security procedures dictate that a line installer first assures a safety line to an appropriate structure, and there at a hook point, on the post before performing the transfer. In order to encourage the connection of the safety line to an appropriately designed structure, the modalities use a safety structure that is easily accessible and optimally located with respect to the line installer while on the ladder. In addition, the security structures provide the necessary mobility to the lineman while transferring from the ladder to the platform and while working in the box. In addition, a structurally reliable handle is provided to support the weight of the lineman at the time the ladder is transferred to the platform. The point of attachment and the handle are installed on both sides of the pole and the installed housing since it can not be determined in advance, with certainty, on which side of the pole the lineman will ascend to the platform. Preferred embodiments relating to high FDHs include an attachment point in conjunction with a structural member that can be installed as an option with an FDH installed on a pole. The use of an optional member allows the installation of an FDH equipped with a latching point only in circumstances where it is desired. For those situations where a point of attachment is not needed, the FDH is provided with a standard mounting bracket. Still other high FDH embodiments provide a standard mounting clamp that is capable of providing an increase in post installation by the addition of a structural member and a latching point if desired after an initial FDH installation. Since the attachment point and / or structural member can incur a damage if used to stop a fall or due to normal deterioration due to use, the high FDH modalities use blocking points and replaceable structural members in the field. Figure 12A illustrates a preferred embodiment of a raised FDH 399 installed on a utility pole 401 using a structural member 404 having a hook point 400. The structural member or stabilization bar 404 serves as a heavy mounting bracket that can optionally equipped with a heavy-duty safety fastener 400 attached to the bar together with a handle 406 that can be releasably attached to the housing mounting bracket using nuts 408. The structural stabilizer bar 404 is constructed, for example, from Starting from a heavy duty steel beam such as a welded beam and providing adequate force to transfer the weight of the accidental fall directly to the utility pole 401 without relying on the force of the raised FDH housing 403. In a preferred embodiment, the bar 404 extends over the total width of the housing 399. In addition, the blocking points 400 are located in such a way that a line installer can access them from the front, side or back of the FDH 399. In addition, the blocking points 400 are located so that the security line can be covered over a door of the FDH 399 while the installer Lines works inside the box. While the steel is used in a preferred embodiment of the structural stabilizer bar 404, other materials such as aluminum, titanium and bar compounds may be used if desired, provided that the transverse dimensions of the material are appropriately altered for the specific material for achieve the necessary weight support capacity. In addition, the shape of the structural stabilizer bar can be changed. The stabilizer bar 404 can be mounted directly on the post 401 or can be mounted on an intermediate structure which in turn is mounted on the post 401. Additionally a stabilizer bar 404 can be disassembled if desired. In the embodiment of Figure 12A, the attachment point consists of a safety fastener 400 manufactured from a heavy-duty N, D-Ring "ring (D-Ring) that is dimensioned to allow fastening the safety frame of the standard line installer to the same and that also has sufficient force to stop a lineman in accidental fall conditions.The safety fastener 400 is replaceable and can be specified to be replaced after a single fall.As such, the fastener Safety is designed to be easily replaced using fasteners such as nuts 401 in conjunction with a clamp 402. A handle 406 is also provided in the illustrated embodiment Handle 406 is held on one side of the clamp installed on the post to facilitate transfer from the installer of stair lines to the platform In particular, a handle 406 can be mounted on a projection 410 on the structural member 4 04 and is positioned to assist a lineman while transferring from the ladder to the post 401. For example, a lineman who climbs the post 401 will lock the safety frame to the "D-Ring" 400 and then hold on to the handle 406 while transferring from the ladder to a secure position on the balcony in front of the raised FDH housing. A typical high FDH box installation will include two "D-rings" and two handles with each one installed on each side of the box.To help ensure the safety of the lineman, a handle is designed so that it will not accept the fastener of the lineman's frame because the handle 406 may not have been classified to sustain the weight of an accidental fall. This safety feature is achieved by increasing the diameter of the handle 406 beyond a diameter that will work with the safety fastener 400 while maintaining the handle's diameter in an acceptable range so that a normal hand of a lineman can grip it. As a result, a lineman is forced to connect only to "D-Ring" 400 that are classified according to the requirements of safety frame and accidental fall. Figure 12B illustrates an exemplary method for using a raised FDH box 399 equipped with a handle 406 and D-ring 400. The method of Figure 12B begins when a lineman places a ladder against a public service pole 401 having a High FDH 399 installed therein (step 426). The lineman climbs on the pole at the height of a balcony associated with the elevated FDH (step 422). Then the lineman connects a safety line, rated to stop a fall, to the D-ring 400 (step 424). The lineman then takes the handle 406 and transfers it from the ladder to the balcony (step 426). Once on the balcony, the lineman opens the doors 414 and 416 to gain access to the components located inside the internal volume of the elevated FDH 399 (step 428). Any necessary service is performed (step 430) and then the doors 414, 416 are closed (step 432). The lineman then takes the handle 406 and transfers it to the ladder (step 434). The security line of the D-ring 400 is unblocked (step 436) and the line installer descends the ladder (step 438). Figure 13 is a diagram illustrating a method for installing and connecting the connection cables of the optical separator module according to a preferred embodiment of the present invention. The method includes step 522 of installing a separator module without output connection cables in an overlapped panel position. In addition, the method includes step 524 of extending the output connection cables of the separator module circumferentially around a field of subscriber terminations. The method includes step 526 connecting ends with individual spacer connection cable connectors in storage sockets of the splitter module. These storage receptacles can initially be preconditioned in the factory. The method includes a next step 528 of storing the gap of the connecting cables in half-circles in an adjacent vertical channel. In addition, the method includes step 530 of deciding whether to connect or disconnect the service order. If the service order needs to be connected, the method includes the decision in step 532 to determine if a separator output is available for an assignment. If it is determined that a separator output is available for assignment then the method proceeds to step 542 of disengaging the connection cables with connectors from the storage position. If it is determined that the output of the separator is not available by step 538, then it is determined whether a position is available to add a module. If so, then the steps of the method are repeated starting from step 522. But, however, it is determined that there is no available position then the maximum capacity of the system module has been reached. The method also includes the option of disconnecting the service order by step 534. Step 534 includes disengaging the connection cable with connectors from the position of the subscriber and by step 536 directing the connection cable through an expanded circumferential path. around the field of terminations subscriber 536. The method further includes step 544 of connecting the separator connection cable to the subscriber's position and step 546 of extending the connection cable through a reduced circumferential path around the subscriber termination field. The method includes step 548 of storing the gap of the connecting cables in half-circles graduated in an adjacent vertical channel. The alternative modalities for the internal components of the FDH can be practiced in accordance with the teachings included here. By means of an example, articulated parking panels can be used to store unused connection cables. Figure 14A illustrates a frame 600 using an articulated parking lot. The embodiment of Figure 14A may include, inter alia, a frame structure 602, fasteners of the module 603, a mounting area of spacer module 604, a shelf of upper spacer module 605, a mounting bracket 607 for mounting on pivot a frame structure 602 and a storage / parking panel 612 on an interior surface of a case, an internal volume 608, a storage panel articulation 610, parking storage panel 612, a parking lot having a plurality of receptacles 614, connecting cable guides 616, a fiber optic fiber guide panel 618, a primary storage panel guide 620 and a frame fiber guide 622. A frame structure 602 has an internal volume 608 for accept a field of subscriber terminations. The frame 602 also includes a spacer module shelf 605 for supporting the spacer modules over a field of subscriber terminations. The spacer modules remain in place using fasteners 603. The connection cables having ends with connectors, extend through a cable guide of frame 622, primary panel guide and one or more cable guides. connections installed in panels 616 before being stored in a parking receptacle field 614. The articulated storage / parking panel 612 provides a higher density fiber connector than the embodiments using separator modules having storage receptacles thereon and located below a field of subscriber terminations. In addition, the storage receptacles 6 and 14 can be arranged in columns of 16 or 32 receptacles so as to correspond to a separator module having 16 or 32 connection cables. While the connecting cable connectors of the storage receptacles 614 are removed and deployed over a subscriber termination field, the receptacle columns of the articulated panel 612 can be removed and reused in FDH in other locations. In addition, once all connection cables have been deployed over the subscriber termination field, the complete articulated panel 612 can be removed providing unimpeded access to the termination field. In addition, the articulated panel 612 can be adjusted to serve as a protective front plate for the subscriber termination field. If the use of seals or other separable means for sealing is provided, then the articulated panel 612 can operate to prevent the accumulation of dust and debris on the field of subscriber terminations. Figure 14B illustrates a mode of a frame having two doors containing a connector parking. The mode 650 may include, among other things, a frame 651, a top spacer module shelf 652 having a first module area 656A, a second module area 656B, a first module guide assembly 654A, a second set of module guides 654B, a first set of module fasteners 658A, a second set of module fasteners 658B, an upper frame fiber guide 660A, a lower frame fiber guide 660JB, a first door panel 662A having a lower parking handling area 666, a upper parking handling area 664, a upper and lower parking area 668, 670, upper panel fiber guides 672, lower panel guides, an internal volume 680 and a first panel of door 662B having substantially the same configuration as the first door panel 662A. The embodiment of Figure 14B operates substantially in the same manner as the embodiment of Figure 14A except that the receptacles for parking the separator module outputs are contained on two hinged door panels 662A, 662B. The frame modalities of Figures 14A and 14B can be used with boxes installed on a slope as well as boxes supported on utility poles. Claims should not be read as limited by the order or elements described unless otherwise determined. Therefore, all the embodiments included in the scope and spirit of the following claims and equivalents thereof are claimed as the invention.

Claims (93)

1. CLAIMS 1. A fiber distribution center for use in an optical communications network, said center comprising: a box; a subscriber termination field having a plurality of subscriber terminations; an optical separator shelf; an optical separator module installed on said separator shelf comprising: a splitter front plate; a plurality of receptacles; and a plurality of connection cables each having a proximal end and a distal end; and a routing channel for directing said connection cables circumferentially around at least a portion of said subscriber termination field.
2. 2. The distribution center of the claim 1 wherein said plurality of connection cables are fixed length connection cables.
3. 3. The distribution center of the claim 2 wherein each of said plurality of connection cables has a connector communicatively coupled with said respective distal end.
4. The distribution center of claim 3 wherein said plurality of connectors is adaptable in an adaptive manner to an equal number of said plurality of subscriber terminations
5. 5. The distribution center of claim 3 wherein said proximal ends of said plurality of connecting cables are coupled to a first end of a transition member and a distal end of a flat cable is coupled to the second end of said transition member and a proximal end of said flat cable is coupled to said front divider plate, said flat cable further has a plurality of optical fibers thereon for transporting optical signals to the equal plurality of connection cables through said transition member.
6. 6. The distribution center of claim 5 wherein said transition member is releasably held in a storage area of the transition member.
7. The distribution center of claim 5 wherein said routing channel and said storage area of the transition member operate to manage the play associated with the respective members of said plurality of connection cables.
8. The distribution center of claim 7 wherein said managed gap allows said plurality of connectors to be communicatively coupled to an equal plurality of subscriber terminations so as to prevent said plurality of connection cables from intersecting.
9. The distribution center of claim 6 wherein said field of subscriber terminations and said optical separator shelf are installed on an articulated frame, said articulated frame being pivotally installed by said articulation in a manner that allows access to the back portion of said subscriber termination field and said optical separator module.
10. 10. The distribution center of the claim 9 wherein said articulated frame further includes said routing channel and said storage area of the transition member.
11. 11. The distribution center of the claim 10 wherein said articulated frame is retained in a closed position substantially in said case using a fastener.
12. 12. The distribution center of the claim 10 wherein said articulated frame is retained in an open position using a securing device.
13. The distribution center of claim 10 wherein said articulated frame can rotate at least 90 degrees from said closed position.
14. 14. The distribution center of claim 9 wherein said articulated frame further includes a storage shelf.
15. The distribution center of claim 10 wherein a plurality of input cables that carry optical signals to said optical separator module is installed in said housing proximate said articulation in a manufacturing facility.
16. The distribution center of claim 8 wherein said box comprises: a rear portion attached to a mounting structure; and a front portion pivotally installed to said back portion using a box hinge.
17. 17. The distribution center of the claim 16 wherein said field of subscriber terminations and said separator shelf are attached to said front portion.
18. 18. The distribution center of claim 17 wherein said front portion engages said back portion using a seal when said front portion is in a closed position.
19. 19. The distribution center of claim 18 wherein said seal forms an airtight compression seal when said front portion is in said closed position.
20. 20. The distribution center of the claim 19 wherein a fastener of the box facilitates said compression seal.
21. 21. The distribution center of the claim 20 further comprising a rain guard to prevent a precipitation from coming into contact with a portion of said gasket when said front portion is in said closed position.
22. 22. The distribution center of -the claim 8 wherein said box is installed near an upper portion of a public service pole using a mounting bracket.
23. 23. The distribution center of claim 22 wherein said mounting bracket comprises a structural member.
24. 24. The distribution center of the claim 23 wherein said structural member is associated with a hooking point and a handle.
25. 25. The distribution center of the claim 24 wherein said attachment point is configured to accept a safety hook having an internal dimension associated therewith, said safety hook further attached to a safety line.
26. 26. The distribution center of claim 25 wherein said handle has a larger diameter than said internal dimension, said diameter preventing said safety hook from attaching to said handle.
27. 27. The distribution center of claim 26 wherein said box is associated with a balcony.
28. 28. The distribution center of claim 27 wherein said handle is positioned to facilitate a transition of a ladder to said balcony while said safety hook is engaged with said attachment point.
29. 29. The distribution center of claim 28 wherein said engaging point is a D-ring calculated to stop a fall.
30. 30. The distribution center of claim 29 wherein a load associated with said fall is transferred from said D-ring to said utility post through said mounting bracket.
31. 31. The distribution center of claim 26 wherein said box further comprises an articulated frame.
32. 32. The distribution center of the claim 26 wherein said box comprises a front portion and a rear portion pivotally coupled using a box hinge.
33. 33. A method for accessing a fiber distribution center comprising the steps of: opening an access door; said opening providing access to at least one front plate associated with a field of terminations; release a bra from the frame; rotating said frame around a joint to provide access to the rear portion of said front sheet, said frame further having a routing channel for directing a plurality of connection wires around said end field.
34. 34. The method of claim 33 wherein said frame further includes a transitional storage area.
35. 35. The method of claim 34 wherein said frame further includes an optical separator module associated with said plurality of connection cables, said optical separator module further having an equal plurality of receptacles for respectively receiving a connector associated with each one. of said plurality of connection cables.
36. 36. The method of claim 35 wherein said termination field includes a plurality of subscriber terminations, said subscriber terminations being communicatively coupled with a plurality of subscribers. .
37. 37. The method of claim 36 wherein said fiber distribution center is part of a passive optical network.
38. 38. A method for accessing a fiber distribution center comprising the steps of: opening an access door, said opening providing access to a release device associated with a seal in a box, said opening further providing access to the front of front plate; disengaging said release device to allow said box to rotate on a joint, said joint being coupled to the rear portion of the box and to the front portion of the box; rotating said front portion away from said posterior portion; and access the back of said front plate.
39. 39. The method of claim 38 wherein said front sheet comprises a subscriber termination field and an optical separator module having a plurality of connection cables associated therewith, said plurality of connection cables carrying electromagnetic communication signals. from an input cable to a plurality of subscriber terminations located in said field of subscriber terminations.
40. 40. A method for accessing a raised box used in a communications network, the method comprising the steps of: ascending a ladder; joining a security line to a hooking point associated with said box; hold a handle next to said box; and moving from said stairway to a platform next to said box.
41. 41. The method of claim 40 wherein said raised platform is installed on a utility pole.
42. 42. The method of claim 41 wherein said attachment point engages a structural member associated with a mounting bracket that retains said housing in said post.
43. 43. The method of claim 42 wherein said safety line is attached to said attachment point using a latching device having an internal dimension.
44. 44. The method of claim 43 wherein said engaging device is dimensioned so as to be attached to said attachment point.
45. 45. The method of claim 44 wherein said handle has a diameter that exceeds said internal dimension to prevent said engagement device from engaging said engagement point.
46. 46. The method of claim 45 wherein said box includes an oscillating frame having a termination field and an optical separator module associated therewith.
47. 47. The method of claim 46 wherein said oscillating frame is pivotally joined to said box using a hinge.
48. 48. The method of claim 47 wherein said oscillating frame further includes a routing channel and a storage area of the transition member.
49. 49. The method of claim 45 wherein said box includes a front portion having a frame supporting a field of terminations and an optical separator, said box further having a rear portion pivotally attached to said front portion using a joint, said rear portion further coupled with said mounting bracket.
50. 50. The method of claim 49 further comprising the steps of: releasing a fastener, said fastener allowing said front portion to rotate when released; rotating said frontal portion around said articulation; and access the back portion of said frame.
51. 51. A frame for supporting optical separator modules in a particular configuration within a box used to provide optical communication signals to a user in conjunction with a subscriber termination field, said frame comprising: a top support bar having a first pattern of holes; and a lower support bar having a second pattern of holes cooperatively operating with said upper orifice pattern to receive a plurality of optical separator modules according to said particular configuration, said determined configuration causing the fiber optic connection cables associated with said plurality of separator modules are arranged in a manner that does not interfere with access to said subscriber termination field.
52. 52. The frame of claim 51 wherein said plurality of spacer modules comprises: a 16 fiber spacer module.; and a 32 fiber separator module.
53. 53. The frame of claim 52 wherein said 16-fiber separator module has an upper orifice and a lower orifice shaped to facilitate alignment in accordance with said particular pattern and wherein said 32-fiber separator module has a pair of upper holes and a pair of lower orifices arranged to further facilitate alignment according to said particular pattern.
54. 54. A fiber distribution center box comprising: a frame having a mounting area of the separator module and a subscriber termination field; a frame guide for managing the optical fibers associated with said mounting area of the splitter module; and a panel for supporting a plurality of fiber storage receptacles, said storage receptacles being for coupling to a connector associated with said optical fibers when said fibers are not deployed, further said panel is pivotally installed in said frame to allow said storage receptacles are accessed when said panel is in an open position.
55. 55. The fiber distribution center of claim 54 wherein said panel is removable from said frame when it is no longer necessary.
56. 56. The fiber distribution center of claim 55 wherein said panel can be removed without the use of tools.
57. 57. The fiber distribution center of claim 55 wherein said plurality of storage receptacles are arranged in modules having 16 receptacles each.
58. 58. The fiber distribution center of claim 55 wherein said mounting area of the spacer module supports a spacer module for providing an optical communication signal to a subscriber using a termination connector associated with said subscriber termination field. .
59. 59. A fiber distribution center box in an optical fiber network -to-the-facilities, comprising: a box of the fiber distribution center; an overlay subscriber shelf in said box and having a plurality of termination connectors to form a termination field; and an optical separator shelf in said housing and having a plurality of optical separator modules, said optical separator modules having a plurality of spacer outlet connecting cable ends wherein said ends of connecting cables have connectors and they are administratively located directly on the front plate of the module. of divisor.
60. 60. The fiber distribution center of claim 59 further comprising extendable separator outlet connecting cables, having ends that are initially located on adapter ports located on said front plate of the splitter module.
61. 61. The fiber distribution center of claim 59 further comprising a flat frame extending from said optical separator shelf, said frame being fixed to said shelf of the optical separator and having a tension release adapter that provides a Higher level of tensile force on said flat cable and an improved bending radius control.
62. 62. The fiber distribution center of claim 59 further comprising a flat frame extending from said optical separator shelf to provide a higher level of packing density on said front plate of the separator module and to allow a space for a plurality of storage adapters on said front plate of the splitter module.
63. 63. The fiber distribution center of claim 59 further comprising a frame extending from said optical separator shelf having a flat cable in a transition of the front plate to increase the packing density in a wiring channel.
64. 64. The fiber distribution center of claim 59 further comprising a frame constructed partly of flat cable and with a disconnection point to a plurality of individual coated connecting cables that allow each separator port to be individually managed.
65. 65. The fiber distribution center of claim 59 further comprising storing the plurality of ends of output connection cables of the separator on said front plate for purposes of locating said ends for rapid deployment.
66. 66. The fiber distribution center of claim 59 further comprising a complete adapter so that each of said plurality of output connecting cable ends of the separator is stored on said front plate and to provide access to the tip of said separator. connector to connect a fiber optic terminator.
67. 67. The fiber distribution center of claim 59 further comprising a plurality of adapter receptacles that can be configured to provide access to a connector bushing inside said module.
68. 68. The fiber distribution center of claim 59 further comprising an articulated shelf for opening said plurality of separator modules for purposes of installing or removing fiber optic terminators.
69. 69. The fiber distribution center of claim 59 further comprising a plurality of adapter receptacle means.
70. 70. A method for configuring a box for use in the distribution of optical signals in a communications network, said method comprising the steps of: installing a first optical separator module having a first plurality of output connection cables, each having one end with connectors; directing said first plurality of connection cables circumferentially around a first field of subscriber terminations located within said box, said first field of subscriber terminations comprising a plurality of subscriber terminations, said routing performing in a manner that does not obstruct access to said plurality of terminations; and storing said ends with connectors of said first plurality of connection cables in an equal number of stored positions ready for deployment.
71. 71. The method of claim 70 wherein said first plurality of connection cables are fixed length connection cables.
72. 72. The method of claim 71 wherein said first plurality of connection cables have a gap associated therewith, respectively, said gap facilitating interaction with at least a subset of said plurality of subscriber terminations.
73. 73. The method of claim 72 wherein said gap associated with the respective members of said first plurality of connection cables is administered in a vertical channel associated with said case.
74. 74. The method of claim 70 further comprising: receiving a connection command associated with a member of said plurality of subscriber terminations.
75. 75. The method of claim 74 further comprising: determining whether at least one of said plurality of connection cables is available; and connecting said at least one of said connection cables to said member of said plurality of subscriber terminations if said at least one of said plurality of connection cables is available.
76. 76. The method of claim 74 further comprising: adding a second optical separator module if said at least one of said first plurality of connection cables is not available.
77. 77. The method of claim 75 wherein said connection step further comprises: directing the gap associated with said at least one of said first plurality of connection cables through a reduced circumferential path; and storing said gap in a loop means
78. 78. The method of claim 72 further comprising: removing one of said plurality of connectorized ends from said stored position and coupling said one of said plurality of connective ends to an adjacent subscriber termination. located within a second field of subscriber terminations near said first field of subscriber terminations, said second field of subscriber terminations is located in such a manner as to cause said play associated with said removed end to be substantially similar to the play associated with the minus another of said plurality of connection cables.
79. 79. The method of claim 78 wherein said first and second termination fields are located within a single fiber distribution center.
80. 80. The method of claim 79 wherein said fiber distribution center comprises a single access door for allowing return to said fiber distribution center.
81. 81. The method of claim 79 wherein said fiber distribution center comprises two access doors to allow return to said fiber distribution center.
82. 82. The method of claim 79 wherein said first and second termination fields are installed on articulations, respectively, to rotate said first and second termination fields to expose the connectors located behind said first and second termination fields respectively.
83. 83. The method of claim 77 further comprising: installing a second separator module having a second plurality of connection cables, each having an end with connectors; and directing said second plurality of connection cables circumferentially around said first termination field so as to cause said second plurality not to cross a substantial number of said first plurality of connection cables.
84. 84. The method of claim 83 wherein said first and second separator modules are installed according to increments, said increments being to determine where said first and second separator modules must be placed.
85. 85. The method of claim 84 wherein said first and second plurality of connection cables further comprise a transition section, respectively.
86. 86. The method of claim 85 wherein said first and second transition sections are located between a planar frame and said plurality of connection cables, respectively.
87. 87. The method of claim 86 wherein said first transition section is installed at a fixed distance away from said first separator module along said circumferential path and said second transition is installed at a fixed distance away from said transition. second separator module so that the locations of said first and second transition sections are substantially co-located when installed in a fiber distribution center.
88. 88. The method of claim 77 wherein said box is a fiber distribution center.
89. 89. The method of claim 88 wherein said fiber distribution center comprises a single access door for allowing return to said fiber distribution center.
90. 90. The method of claim 77 wherein said fiber distribution center comprises two access doors to allow return to said fiber distribution center.
91. 91. The method of claim 77 wherein said first and second termination fields are pivotally installed on articulations, respectively, to rotate said first and second termination fields to expose the connectors located behind said first and second termination fields respectively.
92. 92. The method of claim 70 wherein said field of subscriber terminations is pivotally installed using a link to facilitate access to the back portion of said subscriber termination field.
93. 93. The method of claim 70 wherein said field of subscriber terminations and said optical separator module are supported on a structure pivotally installed in said box using a joint.