Abstract: An N×N switching apparatus for optical components is provided. A switching apparatus includes a first element that provides for a supply of a length of optical fiber in tension and has an interface component for maintaining an end of the optical fiber in tension at a first position. The switching apparatus further includes a second element that has a coupling component for detachably maintaining the end of the optical fiber at a second position. The first and second elements are arranged such that the end of the optical fiber is movable between the first and second elements.

Abstract: Attachment mechanisms configured to be employed to attach a rear housing section to a fiber optic housing, and related assemblies and methods are disclosed. The rear housing section and the fiber optic housing may be part of fiber optic equipment configured to support fiber optic connections of a fiber optic network. The attachment mechanism is configured to be attached and extend from the rear housing section of the fiber optic housing while maintaining the same installed U space of the housing. The attachment mechanism may include a spring plunger which may releasably maintain the rear housing section in a position to allow fasteners to removably attach the rear housing section to the fiber optic housing. In this manner, the rear housing section may be attached to and removed from the fiber optic housing in an efficient manner to minimize downtime for the fiber optic network.

Abstract: A telecommunications closure (10) comprising cables (46), a cover (20), an interior frame (30), the frame (30) holding telecommunications equipment (32), and a seal block (40) sealing the cover (20) closed relative to one or more cables (46) which enter the closure (10). The frame (30) defines a plurality of clamp assembly holders (36). A plurality of clamp assemblies (60, 160, 260) are provided, each clamp assembly (60, 160, 260) for holding a cable including a jacket (48), interior optical fibers (52), and at least one interior strength member (50). Each clamp assembly (60, 160, 260) includes a jacket clamp assembly (64, 164, 264) moveable relative to the frame, and including a wrap (68) which mounts around the jacket, and a strength member clamp assembly (80, 180, 280) moveable relative to the frame. The wrap (68) wraps around the jacket (48) and is adjustable for different jacket diameters.

Abstract: A fiber optic management unit for handling optical fibers unit having a base with first and second segments miming perpendicular to each other. A tray is pivotably attached to the second segment such that the tray is transferable between a first position in which the fiber routing track of the first segment is closed and a second position in which the fiber routing track of the first segment is opened when the tray is pivoted around a first axis, and wherein the tray is transferable between the second position in which the fiber routing track of the first segment is opened and a third position in which the fiber routing track of the first segment is also opened when the tray is pivoted around a second axis running perpendicular to the first axis.

Abstract: The invention relates to a connecting box (1) for glass fiber cables, comprising a housing which is formed from at least two parts and has a lower part and a cover (2), with at least one holder (20) for a coupling (30) for holding glass fiber plugs being arranged within the housing, wherein the holder (20) is in the form of a double frame which comprises two first vertical struts (21) and two second vertical struts (22), with the second struts (22) being arranged closely to a front face (5, 40) of the cover (2) and of the lower part (3), and with the coupling (30) optionally being latchable to the first or the second struts (21, 22).

Abstract: A ferrule holder is provided as one capable of improving convenience in a fusion splice between a built-in fiber and an optical fiber. The ferrule holder 1 is provided with a main body 2 and a lid 3. The main body 2 has a mount portion 4 on which a ferrule body is to be mounted, and the mount portion 4 is provided with a first mount surface 8, and a second mount surface 9 provided through a step portion 11 on the rear side of the first mount surface 8. This allows, for example, the ferrule body with a dust cap thereon to be mounted on the first mount surface 8 in the fusion splice in the case of an SC connector; it also allows the ferrule body with a dust cap thereon to be mounted on the second mount surface 9 in the fusion splice in the case of an LC connector. Therefore, there is no need for preparing a plurality of ferrule holders according to types of connectors, which can achieve improvement in convenience in the fusion splice between the built-in fiber and the optical fiber.

Abstract: A cable exit trough is mountable to a lateral trough section either during initial assembly of the cable routing system, or at a later date. The exit trough includes a bracket portion mountable to the top edge of one of the sides of the lateral trough section. Two lead-ins are provided to lead the cable in an upward direction from the lateral trough section to the exit trough. The exit trough includes an exit trough portion extending from the bracket portion upwardly away from the lateral trough section. The exit trough portion includes a convexly curved bottom trough surface, and two convexly curved upstanding sides. The exit trough portion and the lead-ins define a cable pathway from the lateral trough section to an exit point of the exit trough portion which can either lead downwardly relative to the lateral trough section, or horizontally.

Abstract: A cable roller for use in positioning a cable relative to a cable tray or relative to a ceiling of a building includes a mounting channel, a support assembly attached thereto which is moveable relative to the mounting channel, and at least one roller attached to the support assembly for allowing the cable to roll thereover. The support assembly can be moved from a closed position to an open position to allow for the easy removal of the cable from the cable roller.

Abstract: A traverse module includes a frame, a guiding shaft, an optical module, a cover, and a conductive member. The guiding shaft is mounted to the frame. The optical module is slidably mounted to the guiding shaft, and the optical module is capable of generating high frequency electrical signals which cause electro magnetic interference. The high frequency electrical signals are capable of flowing to the guiding shaft. The cover is grounded, the cover covers the frame. The conductive member projects from the cover and tightly clamps the guiding shaft, and the high frequency electrical signals generated by the optical module can flow to ground by using the conductive member.

Abstract: Removable strain relief brackets for securing fiber optic cables and/or optical fiber to fiber optic equipment, and related assemblies and methods are disclosed. The removable strain relief brackets may be employed to secure fiber optic cable and/or optical fibers routed to fiber optic equipment. The removable strain relief brackets may also be employed to provide strain relief for fiber optic cable and/or optical fibers routed and secure to fiber optic equipment. Fiber optic cable discussed herein includes optical fiber whether disposed in a common cable jacket or disposed freely of each other outside a cable jacket.

Abstract: A cable holder including a frame having a plurality of resiliently flexible trays arranged in a column. A top surface of one of the plurality of trays and the bottom surface of another of the plurality of trays immediately positioned above it forms a pocket that is sized and shaped to receive at least one cable. Each of the trays includes at least one low rail extending from the top surface thereof, and the remainder of the trays includes at least one high rail extending from the bottom surface thereof. A clip is secured to the frame for attachment to a bracket. The trays are depressed to open the pocket, enabling insertion of one or more cables therein or removal therefrom. The resiliency of the trays along with the low rails and high rails deform the cables to form slight bends therein to prevent side-to-side movement or slippage of the cables.

Abstract: An adapter panel arrangement including a chassis and a panel of adapters. The adapters defining open rearward cable connections and open forward cable connections of the panel arrangement. The adapters being arranged in arrays that slide independently of other adapter arrays to provide access to the open rearward and open forward cable connections.

Abstract: An apparatus for clamping and relieving strain in a set of optical fiber ribbon. The strain relief clamp includes a first attachment portion and second attachment portion configured to secure the strain relief clamp to a system component and a set of optical fiber ribbons to the strain relief clamp. When secured the strain relief clamp is configured to relieve strain in the set of optical fiber ribbons.

Abstract: A strain relief device for armored fiber optic cable is described. The strain relief device can made up of a boot collet and a collet nut. The boot collet can have a collet, flexible boot, boot collet threads, and a camming surface. The collet nut can have collet nut threads and a collet nut slope. The strain relief device operates by having the camming surface engage the collet nut slope, causing the collet to compress onto the armor sheath when the boot collet threads engage the collet nut threads as the collet nut is tightened onto the boot collet.

Abstract: A bend radius limiter adapted for installation on a fiber guide is disclosed. In one aspect, the bend radius limiter has a main body with a generally rounded outer surface and an interior surface that defines an interior volume. The main body is also configured with a first slot opening in the generally rounded outer surface that may optionally function as a first or second connecting feature. The bend radius limiter can also include a first connecting feature configured to retain the bend radius limiter onto the fiber guide. In one embodiment, the first connecting feature is located within the interior volume and is radially aligned with the first slot opening.

Abstract: An inlet device is described herein for inserting a telecommunication cable into a telecommunications enclosure. The inlet device includes a housing, a retainer clip attached to the housing and a compression member. The housing can include a compressible portion at the second end of the housing. The retainer clip can secure the inlet device in a close fitting port of a telecommunication enclosure.

Abstract: An assembly includes: a foundation structure; first and second cables having a flattened profile; and a mounting member engaging the first and second cables such that the first and second cables are arranged in stacked relationship and are mounted to the foundation structure.

Abstract: A thermal-management optical-fiber packaging system that includes an optical fiber and a temperature-management device configured to remove excess heat from the optical fiber. In some embodiments, the temperature-management device includes a first housing having a first outer-perimeter surface and an inner volume facing a first inner surface (wherein the inner volume has a length), a plurality of fiber-support members coupled to, and/or integral with, the first inner surface of the first housing, wherein each of the fiber-support members has one or more small-area-of-contact supports arranged along the length of the inner volume, and wherein each small-area-of-contact support is configured to provide a small area (e.g., a point) of contact with the optical fiber, and wherein the optical fiber follows a coiled path around the inner volume. A thermal-management material surrounds the optical fiber except at those locations where the optical fiber contacts the fiber-support members.

Abstract: The present invention provides a connector unit that can surely position and connect a plurality of optical fiber plugs in a short time and easily release a connected state of optical fiber connectors even if the number of optical fiber connectors increases. A connector unit includes a positioning member for positioning a plurality of optical fiber plugs, an adapter that has plug guide holes for inserting tip ends of the optical fiber plugs to connect with the optical fiber plugs, and guide portions for guiding the positioning member with respect to the adapter and inserting the tip ends of the optical fiber plugs into the plug guide holes of the adapter to connect with the optical fiber plugs.

Abstract: An enclosure system for receiving a cable includes an enclosure having an inner chamber and an open position exposing the inner chamber and a closed position covering the inner chamber. A cable receiving port in a wall of the enclosure extends along a longitudinal axis from outside of the enclosure into the inner chamber. The cable receiving port is configured to receive a cable therein when the cable is advanced axially into the port without rotation of the cable when the enclosure is in the closed position. A mating member is associated with the cable receiving port that limits rotation of the cable when the cable is advanced axially into the port. An axial retention member is associated with the cable receiving port that limits axial movement of the cable out of the port when the cable is advanced axially into the port to a lock position.

Abstract: A clamping device for connecting a cable to a strain relief member includes a housing having a retention member extending therefrom. The retention member is configured to be inserted in a mating opening in the strain relief member and to be secured thereto. A connector is configured to connect the cable to the housing.

Abstract: An enclosure-less fiber optic terminal can include a base plate, a spool, an adapter, and an adapter plate. The spool can be rotatably mounted to the base plate. The spool can house an input fiber cable. The adapter can secure a connection between a fiber of the input fiber cable and a fiber of an output fiber cable. The adapter plate has a cable guide defining a channel for routing the output fiber cable from the adapter.

Abstract: The invention relates to a holding fixture (71) for holding at least one cable (72) with an affixing member (1) and a clamping member (40). In order to ensure that the clamping member (40) and the affixing member (1) are arranged in a holding position (H), in which the cable (72) is securely held, the invention provides that the holding fixture (71) is provided with an indicator element (77, 78) that is at least sectionwise laterally shielded by the clamping member (40), if the clamping member (40) is arranged before its holding position (H), and that is arranged in an indication position (I), in which it can easily be perceived, if the clamping member (40) is arranged in its holding position (H).

Abstract: A telecommunications apparatus (10, 210) includes a frame (20, 220) for mounting to a fiber optic cable trough (104, 106, 206). The frame (20, 220) includes a main body (22, 222) defining at least one opening (24, 26). The opening (24, 26) receives a connector module (60, 260). The frame (20, 220) includes a plurality of extensions (40, 240) extending transversely to the main body (22), wherein one or more extensions (40, 240) includes two parallel prongs (42) separated by a slot (44). Fasteners (34) mount the frame (20, 220) to slots (138) on a trough system element.

Abstract: A multi-port or multi-outlet cassette that may be configured as a low profile, high-density cassette. Selected embodiments include a bezel member having a projection positioned between each adjacent pair of outlets to help reduce crosstalk. A releasable latch mechanism may be included that is configured to selectively latch and unlatch the cassette to a patch panel. Embodiments configured for use with fiber optic cables may include a movable connector member. A cable connector may be mounted to the movable connector member to move therewith as a unit. Moving the movable connector member determines an angle of the cable connector relative to the panel. Angles may be selected to reduce stress on a cable connected to the cable connector. In particular, it may be desirable to position the cable connector such that it is orthogonal to the panel.

Abstract: An adapter retaining system comprises an adapter, an adapter pack, and a retaining base. The retaining base allows the adapter pack to slide in a direction substantially parallel to a surface of the retaining base and prevents the adapter pack from moving in a direction substantially perpendicular to the surface. In another embodiment, an adapter retaining system comprises an adapter, an adapter pack, and an adapter plate. The adapter pack rotates about an axis substantially perpendicular to a surface of the adapter plate. In another embodiment, an adapter retaining system comprises an adapter, an adapter pack, and an adapter plate having a curved adapter post. The adapter pack slidably engages the adapter post. In another embodiment, an adapter retaining system comprises an adapter, and an adapter plate having a pair of adapter posts. The adapter posts directly receive the adapter.

Abstract: A cable exit trough is mountable to a lateral trough section either during initial assembly of the cable routing system, or at a later date. The exit trough includes a bracket portion mountable to the top edge of one of the sides of the lateral trough section. Two lead-ins are provided to lead the cable in an upward direction from the lateral trough section to the exit trough. The exit trough includes an exit trough portion extending from the bracket portion upwardly away from the lateral trough section. The exit trough portion includes a convexly curved bottom trough surface, and two convexly curved upstanding sides. The exit trough portion and the lead-ins define a cable pathway from the lateral trough section to an exit point of the exit trough portion which can either lead downwardly relative to the lateral trough section or horizontally.

Abstract: An optical fiber connector includes a fixing module for gripping an optical fiber, an inner housing sleeved on the fixing module; and an outer housing sleeved on the inner housing. The fixing module includes a support member, a fastening member mating with the support member, and a locking member sleeved on the support member. The locking member forms at least one pair of gripping portions at outer surfaces of the locking member. The inner housing defines a pair of sliding grooves in a side wall thereof. The outer housing defines a pair of operating grooves communicating with the pair of sliding grooves correspondingly. The locking member is capable of sliding along the support member to grip or unlock the optical fiber driven by an assembly tool engaging with the pair of gripping portions through the pair of sliding grooves and the pair of operating grooves.

Abstract: The fiber optic hinge can mechanically connect a first fiber optic tray and a second fiber optic tray of a fiber optic device, while providing an optical fiber path extending continuously through the first and second hinge members.

Abstract: Fiber optic enclosures employing clamping assemblies for strain relief cables and related assemblies and methods are disclosed. The fiber optic enclosures may be part of a fiber optic terminal in a fiber optic network. The fiber optic enclosures may include openings in the walls of the fiber optic enclosure. A cable fitting assembly may be attached to a portion of the wall around an opening to form a passageway for fiber optic cables to enter the fiber optic enclosure. An elongated member may be used to guide the fiber optic cables through the passageway. The elongated member may have a first end and second end. The elongated member may include a clamping assembly at the first end to provide strain relief to the fiber optic cables by clamping strength members of the fiber optic cables.

Abstract: An adapter panel arrangement including a chassis and a panel of adapters. The adapters defining rearward cable connections and forward cable connections of the panel arrangement. Openings permitting access to the rearward and forward cable connections of the adapters are provided. The chassis further including a removable rear chassis portion to provide access to cable routing areas within the chassis interior.

Abstract: An apparatus is provided and includes a housing, a block formed to define an array of holes corresponding to an array of plugs into which connectors with spring loaded sleeves are pluggable such that the block engages with a respective sleeve of each connector, the block being supportively disposed within the housing to be movable with respect to the housing between first and second block positions at which the sleeves are extended and retracted, respectively and a cam lever supported on the housing and coupled to the block, which selectively occupies first and second lever positions at which the cam lever causes the block to assume the first and second block positions, respectively.

Abstract: A duct for distributing one or more optical fiber communication lines. The duct comprises an elongated main body having a length and a conduit portion with a lengthwise bore formed therein. The conduit portion contains one or more optical fiber communications lines. The duct also includes a flange portion extending lengthwise adjacent the main body to mount the duct to a generally flat surface, wherein the duct further includes an additional fiber channel for distributing at least one additional optical fiber at least a portion of the length of the duct. The duct can also be formed as a two piece duct system. The duct can be utilized in a drop access location system for horizontal cabling in multi-dwelling unit (MDU) applications.

Abstract: A strain relief device for a fiber optic cable is disclosed. The strain relief device has a cable fitting having a cable fitting body, a shoulder washer and a compression cap. The cable fitting is positioned on the fiber optic cable. The shoulder washer is installed on a central tube of the fiber optic cable, under strength members of the fiber optic cable and fitted in the cable fitting body. The compression cap is installed over the central tube with the strength members inserted through the compression cap. The strength members are compressed between the shoulder washer and the compression cap. The compression cap provides compressive force between the cable fitting body, the shoulder washer and the compression cap.

Abstract: A bracket for securing an end of a fiber optic cable, having at least one strength member, to a termination point includes a base portion at a first end of the bracket, a retention feature at a second end of the bracket that is opposite to the first end, and adapted to receive and at least partially surround an exposed end of the at least one strength member, and an elongated portion extending from the base portion to the retention feature. A first flat surface, on the base portion or the elongated portion, has at least one opening adapted to receive a fastener for mounting the strength member bracket to a first mounting surface on the termination point. A first flange is disposed along the elongated portion, and adapted to receive a tether for securing a jacketed portion of the fiber optic cable to the bracket.

Abstract: A self-locking cable clamp arrangement includes a bracket and a flexible tab disposed on the bracket. The bracket has a cable mounting region, a first engagement region, and a support region disposed therebetween. A cable can be clamped to the cable mounting region. The support region defining two members spaced apart sufficient to enable an edge of the panel to extend partially therebetween. The flexible tab can be selectively coupled to the cable mounting region and to the first engagement region. The clamp arrangement mounts to the panel by sliding the bracket downwardly through an open-ended slot defined in the panel until the tab is received within a cutout portion of the panel to secure the bracket to the panel.

Abstract: Certain types of fiber optic cable assemblies include a fiber optic cable; and a cable pulling assembly coupled to one end of the fiber optic cable. The fiber optic cable includes optical fibers and a first fanout arrangement at which the optical fibers are transitioned from a multi-fiber cable section to connectorized pigtails. Some example cable pulling assemblies include an enclosure defining a cavity in which the second end of the fiber optic cable is disposed. A first end of the enclosure surrounds the first fanout arrangement. A second end of the enclosure is folded into a loop. A first cable tie arrangement secures the second end of the enclosure in the loop. At least a second cable tie extends through opposite side holes in the first fanout arrangement and through both top and bottom portions of the enclosure.

Abstract: A fiber optic adapter system includes a fiber optic adapter and a mounting bracket. The fiber optic adapter includes a first interlock feature. The mounting bracket defines a channel having a longitudinal channel axis and a longitudinally extending lateral side opening. The mounting bracket includes a second interlock feature. The fiber optic adapter and the mounting bracket are relatively configured to enable a user to interlock the first and second interlock features to secure the fiber optic adapter to the mounting bracket by inserting the fiber optic adapter into the channel through the lateral side opening in an insertion direction transverse to the channel axis.

Abstract: A cable clamp assembly and a cable clamp method for a flat fiber optic cable are disclosed. The assembly includes a wedge-shaped outer shell with a bottom wall having a friction inner surface with a longitudinal central recess formed therein. The flat fiber optic cable resides within the interior of the outer shell and is supported by the friction inner surface. A shim having two parallel rows of protrusions fits within the interior of the outer shell with the protrusions being in contact with the fiber optic cable. The assembly includes a wedge insert having two outer ridges that substantially align with the two rows of protrusions. When the wedge insert matingly engages the outer shell, the outer ridges press down on the protrusions, which in turn press down on the fiber optic cable mainly at the locations where longitudinal dielectric strength members reside.

Abstract: A communications enclosure has an interior, a front, a rear, first and second sides extending from the front to the rear, and a rear wall at or near the enclosure rear and including a mounting surface generally perpendicular to the first side. A bracket has a first portion overlying the rear wall mounting surface, is releasably connected to the rear wall mounting surface, and is configured to secure a cable bundle to the rear wall mounting surface.

Abstract: A furcation tube for an optical fiber cable comprising a plurality of channels for receiving a plurality of optical fiber strands that allows for the breakout of multiple fiber groups without the need for marking individual fibers. For example, a 24 fiber cable can be broken out into two, 12-fiber groups within the same furcation tube for connectorization. This improves the sortabilility of the optical fiber strands and eliminates the extra bulk of using multiple furcation tubes. The furcation tube includes strength members disposed therein for strain relief.

Abstract: An optical device is disclosed, including a surface emitting laser element having a surface emitting laser which emits a light in a direction which is perpendicular to a substrate face; a light receiving element which monitors the light of the surface emitting laser; a package provided with a region on which the surface emitting laser element and the light receiving element are provided; and a lid which has a window through which passes the light of the surface emitting laser, the window being formed with a transparent member, and which covers the surface emitting laser element and the light receiving element.

Abstract: An optical cable holding device includes a central shaft section fixed to a substrate in such a way as to stand on the substrate, a plurality of flexible holding feet that are disposed in such a way as to spread radially from the central shaft section, each flexible holding foot extending from a base end on a side where the central shaft section is located, toward a side where the substrate is located and being bent in such a way as to get away from the central shaft section as the flexible holding foot gets closer to a tip which is a free end, and a plurality of cable holders that are disposed independently of the substrate at the tips of the flexible holding feet and hold an optical cable.

Abstract: A lashing assembly lashes together two or more fiber optic telecommunications cables. The lashing assembly comprises at least a first and a second bobbin. As the cables are passed through the first bobbin, twine pays off from the first bobbin and wraps around the cables in a clockwise helix. As the cables are passed through the second bobbin, twine pays off from the second bobbin and wraps around the cables in a counterclockwise helix. In this way, the twine from the first and second bobbins lash the cables together as the cables are passed through the first and second bobbins.

Abstract: The present invention relates to an insert for an optical fiber assembly through which an optical fiber element can be pulled out without damage. The insert is provided for guiding a part of the optical cable (2) which comprises at least one optical fiber element (3) and being accommodated in a housing of the optical fiber assembly, wherein said part of the optical cable (2) has a cut-out portion in which a jacket of said optical cable (2) is partially removed, thereby exposing said at least one optical fiber element (3). The insert (1) comprises an optical cable guidance means (4) for guiding said optical cable (2) across the insert (1); a recess (5) surrounding the exposed optical fiber element (3) and a bend element (6) arranged at an end portion of the recess (5) and projecting from the recess (5) in a curved manner.

Abstract: A fiber optic enclosure includes a housing and a cable spool assembly disposed on an exterior surface of the housing. The cable spool assembly has a first tear-away end and a second tear-away end. The first and second tear-away ends include at least one area of weakness extending from an inner diameter of the cable spool assembly to an outer diameter of the cable spool assembly. A mounting plate is rotationally engaged with the cable spool assembly such that the cable spool assembly and the housing selectively and unitarily rotate about an axis of the mounting plate.

Abstract: A cable exit trough is mountable to a lateral trough section either during initial assembly of the cable routing system, or at a later date. The exit trough includes a bracket portion mountable to the top edge of one of the sides of the lateral trough section. Two lead-ins are provided to lead the cable in an upward direction from the lateral trough section to the exit trough. The exit trough includes an exit trough portion extending from the bracket portion upwardly away from the lateral trough section. The exit trough portion includes a convexly curved bottom trough surface, and two convexly curved upstanding sides. The exit trough portion and the lead-ins define a cable pathway from the lateral trough section to an exit point of the exit trough portion which can either lead downwardly relative to the lateral trough section, or horizontally.

Abstract: A grounding clamp assembly for a cable having a spiral metal shield employs a first clamp and a second clamp. The clamps have concave cradles. The clamps are forced together around the cable. A biased contact element connects with a conductive strip extending from one of the clamps. The cable is captured between the cradles, and the contact element engages the shield.

Abstract: A duct for distributing one or more optical fiber communication lines. The duct comprises an elongated main body having a length and a conduit portion with a lengthwise bore formed therein. The conduit portion contains one or more optical fiber communications lines. The duct also includes a flange portion extending lengthwise adjacent the main body to mount the duct to a generally flat surface, wherein the duct further includes an additional fiber channel for distributing at least one additional optical fiber at least a portion of the length of the duct. The duct can also be formed as a two piece duct system. The duct can be utilized in a drop access location system for horizontal cabling in multi-dwelling unit (MDU) applications.

Abstract: A fiber optic cable distribution box has an interface compartment for interfacing a first set of fibers when routed inside the compartment, with a second set of fibers associated with a fiber optic cable that is routed to the box. A drum region is disposed beneath the interface compartment. The drum region includes a cylindrical wall for supporting a fiber optic cable wound about the wall. The drum region is formed so that the box can turn about the axis of the cylindrical wall when a cable is paid out from the drum region. The interface compartment and the drum region are constructed so that the first set of fibers inside the interface compartment, originate from an inside end portion of the cable wound on the drum region.