Communications panel systems

Abstract

A majority of a substrate of an electronics arrangement extends over only a forward portion of a tray. To slide cassettes onto the tray from the rear, ramps are included on the tray to transition a forward edge of the cassette over the rearward edge of the substrate. The ramps may be included (e.g., integral) with cassette guides disposed on the tray. The ramps may be mounted within openings defined in the tray.

Description

Attorney Docket No. 02316.8967WOU1COMMUNICATIONS PANEL SYSTEMSCROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is being filed on October 30, 2025, as a PCT International Application and claims the benefit of U.S. Provisional Application No. 63 / 713,703, filed October 30, 2024, titled “Communications Panel Systems”, the disclosure of which is hereby incorporated herein by reference in its entirety.BACKGROUND

[0002] In the communications industry, the demand for added capacity is growing rapidly. This demand is being met in part by the increasing use and density of fiber optic transmission equipment. Even though fiber optic equipment permits higher levels of transmission in the same or smaller footprint than traditional copper transmission equipment, the demand requires even higher levels of fiber density. This has led to the development of high-density fiber handling equipment. In communications panel systems, port members (e.g., optical adapters, electrical jacks, hybrid port members, etc.) defining patch-side ports are mounted to one or more trays that are disposable within a communications panel. The patch-side ports are configured to receive plug connectors at the fronts of the trays. The trays can either be stationary within the communications panel or can slide forwardly of the communications panel to enhance access to the port members.SUMMARY

[0003] In accordance with some aspects of the disclosure, a tray for use in a communications panel includes a tray base; an electronics arrangement; and a plurality of guides. The tray base extends along a width between opposite first and second sides, extends along a depth between a front and a rear, and extends along a height between a bottom and a top. The electronics arrangement is mounted to the tray base. The electronics arrangement includes a plurality of electronics mounted to a substrate. The substrate extends along a depth between a forward edge and a rearward edge. The guides have front ends disposed on the electronics arrangement and rear ends extending past the rearward edge of the substrate to be disposed on an exposed region of the tray base.

[0004] In accordance with other aspects of the disclosure, a tray for use in a communications panel includes a tray base, an electronics arrangement, and a plurality of guides. The tray base extends along a width between opposite first and second sides, extends along a depth between a front and a rear, and extends along a height between a bottom and a top. The electronics arrangement is mounted to the tray base. The electronics arrangement includes a plurality of electronics mounted to a substrate. The substrate extends along a depth between a forward edge and a rearward edge. Each guide includes a ramp that is disposed at the rearward edge of the substrate when the guide is mounted to secure the electronics arrangement to the tray base. The ramp transitions from a first height of the tray base to a second height of the electronics arrangement.

[0005] In accordance with other aspects of the disclosure, a method of installing a cassette onto a tray arrangement including aligning a cassette with a rear of a tray so that a latching arrangement of the cassette aligns with a stop arrangement of a guide along a forward-rearward axis of the tray; sliding the cassette forwardly relative to the tray towards a rearward edge of an electronics arrangement of the tray; continuing to slide the cassette forwardly as the cassette engages a ramp and cams away from the tray while moving forwardly; and continuing to slide the cassette forwardly as the cassette slides over the rearward edge of the electronics arrangement from the ramp.

[0006] In accordance with other aspects of the disclosure, a communications panel includes a chassis; a tray disposed at the chassis; and a plurality of ramps. The tray extends along a depth between a front and a rear and extends along a width between opposite first and second sides. The tray defines a first region and a second region. The first region has a first height. The second region has a second height. The tray defines a plurality of cassette mounting stations disposed in a row along the width of the tray. Each of the cassette mounting stations extends along the depth of the tray. At least a portion of each cassette mounting station extends along a portion of the first region and a portion of the second region. The ramps disposed at the first region of the tray. Each mounting station includes at least one of the ramps. Each ramp transitions between the first height of the first region and the second height of the second region.

[0007] A variety of additional inventive aspects will be set forth in the description that follows. The inventive aspects can relate to individual features and to combinations of features. It is to be understood that both the forgoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the broad inventive concepts upon which the embodiments disclosed herein are based.BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings, which are incorporated in and constitute a part of the description, illustrate several aspects of the present disclosure. A brief description of the drawings is as follows:

[0009] FIG. 1 is a perspective view of an example communications panel including a plurality of tray arrangements.

[0010] FIG. 2 is a perspective view of an example tray arrangement suitable for use in the communications panel of FIG. 1.

[0011] FIG. 3 is an exploded view of the tray arrangement of FIG. 2.

[0012] FIG. 4 is a top plan view of an example tray suitable for use in the tray arrangement of FIG. 2.

[0013] FIG. 5 is a top plan view of an example electronics arrangement suitable for use in the tray arrangement of FIG. 2.

[0014] FIG. 6 is a top perspective view of an example guide suitable for use in the tray arrangement of FIG. 2.

[0015] FIG. 7 is a bottom perspective view of the guide of FIG. 6.

[0016] FIG. 8 is a perspective view of a cross-section of FIG. 2 taken along the 8-8 line.

[0017] FIG. 9 is a side elevational view of an enlarged portion of FIG. 8.

[0018] FIG. 10 shows a cassette mounted on the tray arrangement of FIG. 2.

[0019] FIG. 11 is a bottom perspective view of the cassette of FIG. 10.

[0020] FIG. 12 is a side elevational view of the cassette of FIG. 10.

[0021] FIG. 13 is a perspective view of a cross-section taken along the 13-13 line of FIG. 10.

[0022] FIG. 14 is a side elevational view of an enlarged portion of FIG. 13 showing a front edge of the cassette at the ramp.

[0023] FIG. 15 is another bottom perspective view of the guide of FIG. 6.DETAILED DESCRIPTION

[0024] Reference will now be made in detail to exemplary aspects of the present disclosure that are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0025] The present disclosure is directed to a communications panel 100 (e.g., see FIG. 1) configured to mount to a rack. The communications panel 100 includes a chassis 102 holding one or more tray arrangements 110 (e.g., see FIG. 2). The chassis 102 has a depth D extending along a forward-rearward axis FR between a front 104 and a rear 106. The chassis 102 also has a width W extending along a lateral axis LA between opposite first and second sides 108, 112. The chassis 102 also has a height H extending between a bottom wall 114 and a top wall 116. In certain implementations, mounting brackets 150 are disposed at the first and second sides 108, 112 of the chassis 102. The mounting brackets 150 are configured to mount the chassis 102 to the rack. In certain implementations, a front door arrangement 152 is mounted at the front 104 of the chassis 102 to selectively block and allow access to an interior of the chassis 102 through the front 104.

[0026] Each tray arrangement 110 spans the width W of the chassis 102. In some implementations, the tray arrangements 110 are stationary within the chassis 102. In other implementations, the tray arrangements 110 are slidable along the depth D of the chassis 102 between two or more positions (e.g., a retracted position and an extended position). In certain examples, the tray arrangement 110 can be latched into any of the two or more positions using a latch arrangement. Each tray arrangement 110 is configured to support one or more cassettes 170 (e.g., see FIG. 10) carrying ports (e.g., optical ports, electrical ports, hybrid ports, etc.) configured to receive plug connectors.

[0027] Examples of various tray arrangements suitable for use in the chassis 102 are described in co-pending U.S. Patent No. 11,740,421; co-pending PCT Publication No. WO2022 / 204515 and co-pending PCT Publication No. WO2022 / 226406, the disclosures of which are hereby incorporated by reference in their entirety.

[0028] The tray arrangement 110 includes a tray base 120 carrying two or more cassette guides 140. The tray base 120 extends along a width W1 between opposite first and second sides 122, 123 and along a depth DI between a front 124 and a rear 125. The tray base 120 also has a height Hl extending between a bottom and a top. In certain examples, the front 124 of the tray base 120 defines a front of the tray arrangement 110 and the rear 125 of the tray base 120 defines a rear of the tray arrangement 110. In certain examples, a row 126 of apertures 127 extends along the width W1 of the tray base 120. In certain examples, the row 126 is disposed at an intermediate position along the depth DI of the tray base 120.

[0029] In certain examples, the tray base 120 defines one or more apertures 128 to facilitate gripping and maneuvering the tray arrangement 110 during installation at the chassis 102. In the example shown, the tray base 120 defines a pair of apertures 128 at an intermediate position along the width W 1 and an intermediate position along the depth DI. In certain examples, the apertures 128 are more than twice the size of the apertures 127. The pair of apertures 128 are each sized to receive a finger of a user. In certain examples, rear edges of the apertures 128 are rounded. In certain examples, front edges of the apertures 128 are flat.

[0030] The guides 140 are spaced from each other along the width W1 of the tray base 120. Each guide 140 extends parallel to the depth DI of the tray base 120. The guides 140 are configured to define a plurality of cassette mounting stations. The cassette mounting stations extend in a row along the width W1 of the tray base 120. In certain implementations, a combination of two or more of the guides 140 are configured to slidingly receive a cassette 170 along the guides 140 from either the front end of the tray 110 or from the rear end of the tray 110 at a discretion of a user. Interaction between the guides 140 and the cassettes 170 will be discussed in more detail herein.

[0031] In certain implementations, an electronics arrangement 130 (e.g., a circuit board) is mounted to the tray base 120 to be carried with the tray base 120 relative to the chassis 102. The electronics arrangement 130 includes a substrate 131 on which one or more electronics are mounted. For example, port presence sensors or portions or port presence sensing arrangements can be mounted to the substrate 131. In certain examples, a cassette presence sensor or a part of a cassette presence sending arrangement can be mounted to the substrate 131.

[0032] The substrate 131 extends along a width W2 between opposite first and second ends 132, 133 and along a depth D2 between a forward edge 134 and a rearward edge 135. In certain examples, the rearward edge 135 of the substrate 131 is recessed inwardly (e.g., forwardly) from the rear 125 of the tray base 120. In certain examples, the rearward edge 135 of the substrate 131 is disposed forward of the row 126 of apertures 127. In certain examples, the rearward edge 135 is a flat edge facing the rear of the tray 110. In certain examples, the substrate 131 and tray base 120 have a combined height H2 that is greater than the height Hl of the tray base 120 (e.g., see FIG. 9).

[0033] In certain implementations, the substrate 131 includes a leg 137 that extends rearwardly of the rearward edge 135. The leg 137 extends over a rearward region of the tray base 120 to a rear of the tray 110. In certain examples, a communication circuit isdisposed on the leg 137 so that a data cable routed to the rear of the tray 110 can be connected to the electronics carried by the substrate 131 via the communications circuit. In certain examples, a notch 138 or contour is defined by the leg 137 to accommodate the apertures 127 of the row 126 (e.g., see FIG. 10).

[0034] In certain implementations, the electronics arrangement 130 is held to the tray base 120 using one or more of the guides 140. For example, each guide 140 includes one or more posts 148 extending outwardly from a body 142. In certain examples, at least some of the posts 148 of at least some of the guide bodies 142 extend through the substrate 131 of the electronics arrangement 130. In certain examples, the posts 148 can be heat staked or otherwise secured to the tray base 120. In certain examples, a forward group of one or more posts 148 may extend through the substrate 131 to reach the tray base 120 while a rearward group of one or more posts 148 attach directly to the tray base 120 without the substrate 131 being interposed.

[0035] As shown in FIGS. 6, 7, and 15, each guide body 142 extends along a length LG between a first end 144 and an opposite second end 146. In certain examples, the body 142 is elongate along the length LG. In certain implementations, each guide body 142 has a first side that faces towards the first side 122 of the tray base 120 and an opposite second side that faces towards the second side 123 of the tray base 120. In certain examples, the second side of the body 142 is flat along the length LG. Each guide 140 includes a stop arrangement 154 extending outwardly from the first side of the body 142 towards the first side 122 of the tray base 120. In certain examples, each stop arrangement 154 includes first and second oppositely-facing camming members spaced apart along the length LG of the guide 140. The camming member define opposing stop surfaces. The camming members also define camming surfaces at opposite ends of the camming members from the stop surfaces. Further details on the stop arrangement 154 of the guides 140 can be found in PCT Appl. No. PCT / US2024 / 024024, filed April 11, 2024, and titled “Communications Panel System,” [having attorney docket no. 02316.8758WOU1], the disclosure of which is hereby incorporated herein by reference.

[0036] In accordance with certain aspects of the disclosure, each guide body 142 also includes a ramp 160 extending outwardly from the first side of the body 142. In certain implementations, the ramp 160 is disposed at an intermediate position along the length LG ofthe guide body 142. In some examples, the ramp 160 is disposed at a central location along the length LG. In other examples, the ramp 160 is offset along the length LG so that a first length LG1 from the ramp 160 to a first end of the body 142 is greaterthan a second length LG2 from the ramp 160 to a second end of the body 142. In other examples, the ramp 160 is offset along the length LG so that a first length LG1 from the ramp 160 to a first end of the body 142 is less than a second length LG2 from the ramp 160 to a second end of the body 142. In certain examples, the ramp 160 aligns with the stop arrangement 154. For example, the ramp 160 may align with a gap between the opposing stop surfaces of the stop arrangement 154. In certain examples, at least part of the ramp 160 extends downwardly below the body 142 (e.g., see FIG. 9). In certain examples, the ramp 160 extends along the length LG of the guide body 142 from a shorter end 162 to a taller end 164. In some examples, the ramp 160 is planar between the shorter and taller ends 162, 164. In other examples, however, the ramp 160 has a non-linear contour between the shorter and taller ends 162, 164 (e.g., see FIG. 6).

[0037] In certain implementations, the ramps 160 of the guides 140 fit into the apertures 127 defined in the tray base 120 (e.g., see FIG. 9). The apertures 127 accommodate the ramps 160, thereby allowing the guide bodies 142 to be seated directly on the electronics arrangement substrate 131. In certain examples, the rearward edge 135 of the substrate 131 is disposed at forward edges of the apertures 127. In some examples, the rearward edge 135 of the substrate 131 is flush with the apertures 127. In other examples, the rearward edge 135 overhangs the apertures 127 (e.g., see FIG. 9). In other examples, the rearward edge 135 is recessed forwardly of the apertures 127. In certain examples, the guides 140 are mounted to the tray 110 so that the shorter ends 162 of the ramps 160 face the rear of the tray 110 and the taller ends 164 face towards the front of the tray 110. In certain examples, the taller ends 164 of the ramps 160 faces the rearward edge 135 of the electronics arrangement substrate 131 (e.g., see FIG. 9).

[0038] Referring to FIGS. 10-14, a cassette 170 carries one or more front ports 174 at a front of the cassette 170. The front ports 174 are configured to receive plug connectors. In some implementations, the front ports 174 are optical ports configured to receive optical plug connectors. In other implementations, the front ports 174 may be electrical ports configured to receive electrical plug connectors, hybrid ports configured to receive hybrid plug connectors, or a mixture thereof. In some implementations, a cassette 170 carries single-fiber front ports 174 (e.g., LC front ports). In other implementations, a cassette 170 carries multi-fiber front ports 174 (e.g., MPO front ports, SN front ports offered by Senko, etc.). In still other implementations, the same cassette 170 may carry a mix of two or more types of front ports 174 (e.g., a mixture of MPO and LC ports).

[0039] In some implementations, the cassette 170 carries one or more rear ports 176 (e.g., optical port, electrical port, hybrid port, etc.) at the rear of the cassette 170. Each rear port 176 is configured to receive a plug connector. Intermediate optical fibers within the cassette 170 connect the front and rear ports 174, 176. In other implementations, the cassette 170 carries ports only at the front of the cassette 170. In such implementations, a rear of the cassette 170 is configured to enable optical fibers or one or more optical fiber cables to extend into / onto the cassette 170 and be routed towards the front ports 174.

[0040] The cassettes 170 are slidably mounted to the tray arrangement 110 along the guides 140. In certain implementations, the cassette 170 includes a cassette body 172 that defines one or more bottom channels sized to receive guides 140 to enable a cassette 170 to extend over one or more guides 140. In certain implementations, each cassette 170 includes an end rail at one side configured to engage a first guide 140 and a bottom rail disposed within the bottom channel configured to engage a second guide 140. The second end of the cassette body 172 is not configured to engage a guide 140. Additional information about the bottom rail of the cassette is provided in U.S. Patent No. 11,740,421, incorporated by reference above.

[0041] In accordance with certain aspects of the disclosure, the cassette body 172 may define a front edge 173. In certain examples, one or more port members (e.g., optical adapters) extend forwardly of the front edge 173. In some examples, the front edge 173 is chamfered (e.g., see FIGS. 11 and 12). In other examples, the front edge 173 defines a forward shoulder. As the cassette 170 is slid onto the tray 110 from the rear, the front edge 173 of the body 172 cams over the ramp 160 from the shorter end 162 to the taller end 164 (e.g., see FIG. 14). Accordingly, the ramp 160 raises the front edge 173 of the cassette 170 to be flush or above the rearward edge 135 of the electronics arrangement substrate 131, thereby enabling the cassette 170 to continue sliding forwardly along the tray 110 without becoming hung up on the electronics arrangement substrate 131.

[0042] In certain implementations, a cassette 170 is configured to releasably lock (e.g., latch) to one of the guides 140 (e.g., to the stop arrangement 154) in at least one discrete position. Each cassette 170 includes a latching arrangement 175 that includes a stop member configured to engage the stop arrangement 154 of the respective guide 140 when the cassette 170 is disposed at a particular location relative to the guide 140. The latching arrangement 175 also includes a release handle to unlock the cassette 170 from the guide 140.

[0043] Examples of the disclosure may be described according to the following aspects.

[0044] Aspect 1. A tray arrangement for use in a communications panel, the tray arrangement comprising:

[0045] a tray base extending along a width between opposite first and second sides, extending along a depth between a front and a rear, and extending along a height between a bottom and a top;

[0046] an electronics arrangement mounted to the tray base, the electronics arrangement including a plurality of electronics mounted to a substrate, the substrate extending along a depth between a forward edge and a rearward edge;

[0047] a plurality of guides having front ends disposed on the electronics arrangement and rear ends extending past the rearward edge of the substrate to be disposed on an exposed region of the tray base.

[0048] Aspect 2. The tray arrangement as claimed in aspect 1, further comprising ramps disposed rearward of the rearward edge of the substrate.

[0049] Aspect 3. The tray arrangement as claimed in aspect 2, wherein each of the guides defines a respective one of the ramps.

[0050] Aspect 4. The tray arrangement as claimed in aspect 2, wherein the tray base defines a row of apertures extending along the width of the tray base, the apertures receiving the ramps.

[0051] Aspect 5. The tray arrangement as claimed in aspect 4, wherein the row is positioned at an intermediate location along the depth of the tray base.

[0052] Aspect 6. The tray arrangement as claimed in aspect 1, wherein the guides hold the electronics arrangement to the tray base via a first set of heat stakes that each extend through both the substrate and the tray base, each guides also having a second set of heat stakes that extend through the tray base only, but not through the substrate.

[0053] Aspect 7. A tray arrangement for use in a communications panel, the tray arrangement comprising:

[0054] a tray base extending along a width between opposite first and second sides, extending along a depth between a front and a rear, and extending along a height between a bottom and a top;

[0055] an electronics arrangement mounted to the tray base, the electronics arrangement including a plurality of electronics mounted to a substrate, the substrate extending along a depth between a forward edge and a rearward edge;

[0056] a plurality of guide, each guide including a ramp that is disposed at the rearward edge of the substrate when the guide is mounted to secure the electronics arrangement to the tray base, the ramp transitioning from a first height of the tray base to a second height of the electronics arrangement.

[0057] Aspect 8. The tray arrangement as claimed in aspect 7, wherein the tray base defines a row of apertures extending along the width of the tray base, each aperture receiving a respective one of the ramps.

[0058] Aspect 9. The tray arrangement as claimed in aspect 8, wherein the row is positioned at an intermediate location along the depth of the tray base.

[0059] Aspect 10. The tray arrangement as claimed in aspect 7, wherein the guides hold the electronics arrangement to the tray base via a first set of heat stakes, each guide also having a second set of heat stakes that attach to the tray base, but do not extend through the substrate.

[0060] Aspect 11. A method of installing a cassette onto a tray arrangement, the method comprising:

[0061] aligning a cassette with a rear of a tray so that a latching arrangement of the cassette aligns with a stop arrangement of a guide along a forward-rearward axis of the fray;

[0062] sliding the cassette forwardly relative to the tray towards a rearward edge of an electronics arrangement of the tray;

[0063] continuing to slide the cassette forwardly as the cassette engages a ramp and cams away from the tray while moving forwardly; and

[0064] continuing to slide the cassette forwardly as the cassette slides over the rearward edge of the electronics arrangement from the ramp.

[0065] Aspect 12. The method of aspect 11, wherein step (d) is performed until a latching arrangement of the cassette latches to the tray arrangement.

[0066] Aspect 13. A communications panel comprising:

[0067] a chassis;

[0068] a tray arrangement disposed at the chassis, the tray arrangement extending along a depth between a front and a rear and extending along a width between opposite first and second sides, the tray arrangement defining a first region and a second region, the first region having a first height, the second region having a second height, the tray arrangement defining a plurality of cassette mounting stations disposed in a row along the width of the tray, each of the cassette mounting stations extending along the depthof the tray, at least a portion of each cassette mounting station extending along a portion of the first region and a portion of the second region; and

[0069] a plurality of ramps disposed at the first region of the tray arrangement, each mounting station including at least one of the ramps, each ramp transitioning between the first height of the first region and the second height of the second region.

[0070] Aspect 14. The communications panel of aspect 13, wherein at least a majority of the second region is disposed forward of the first region.

[0071] Aspect 15. The communications panel of aspect 13, wherein the tray arrangement includes an electronics arrangement mounted to a tray base, wherein the first region includes an area where the tray base is covered by the electronics arrangement and the second region includes another area where the tray base is not covered by the circuit board.

[0072] Having described the preferred aspects and implementations of the present disclosure, modifications and equivalents of the disclosed concepts may readily occur to one skilled in the art. However, it is intended that such modifications and equivalents be included within the scope of the claims which are appended hereto.

Claims

What is claimed is:

1. A tray arrangement for use in a communications panel, the tray arrangement comprising: a tray base extending along a width between opposite first and second sides, extending along a depth between a front and a rear, and extending along a height between a bottom and a top; an electronics arrangement mounted to the tray base, the electronics arrangement including a plurality of electronics mounted to a substrate, the substrate extending along a depth between a forward edge and a rearward edge; a plurality of guides having front ends disposed on the electronics arrangement and rear ends extending past the rearward edge of the substrate to be disposed on an exposed region of the tray base.

2. The tray arrangement as claimed in claim 1, further comprising ramps disposed rearward of the rearward edge of the substrate.

3. The tray arrangement as claimed in claim 2, wherein each of the guides defines a respective one of the ramps.

4. The tray arrangement as claimed in claim 2, wherein the tray base defines a row of apertures extending along the width of the tray base, the apertures receiving the ramps.

5. The tray arrangement as claimed in claim 4, wherein the row is positioned at an intermediate location along the depth of the tray base.

6. The tray arrangement as claimed in claim 1, wherein the guides hold the electronics arrangement to the tray base via a first set of heat stakes that each extend through both the substrate and the tray base, each guides also having a second set of heat stakes that extend through the tray base only, but not through the substrate.

7. A tray arrangement for use in a communications panel, the tray arrangement comprising:a tray base extending along a width between opposite first and second sides, extending along a depth between a front and a rear, and extending along a height between a bottom and a top; an electronics arrangement mounted to the tray base, the electronics arrangement including a plurality of electronics mounted to a substrate, the substrate extending along a depth between a forward edge and a rearward edge; a plurality of guide, each guide including a ramp that is disposed at the rearward edge of the substrate when the guide is mounted to secure the electronics arrangement to the tray base, the ramp transitioning from a first height of the tray base to a second height of the electronics arrangement.

8. The tray arrangement as claimed in claim 7, wherein the tray base defines a row of apertures extending along the width of the tray base, each aperture receiving a respective one of the ramps.

9. The tray arrangement as claimed in claim 8, wherein the row is positioned at an intermediate location along the depth of the tray base.

10. The tray arrangement as claimed in claim 7, wherein the guides hold the electronics arrangement to the tray base via a first set of heat stakes, each guide also having a second set of heat stakes that attach to the tray base, but do not extend through the substrate.

11. A method of installing a cassette onto a tray arrangement, the method comprising:(a) aligning a cassette with a rear of a tray so that a latching arrangement of the cassette aligns with a stop arrangement of a guide along a forward-rearward axis of the tray;(b) sliding the cassette forwardly relative to the tray towards a rearward edge of an electronics arrangement of the tray;(c) continuing to slide the cassette forwardly as the cassette engages a ramp and cams away from the tray while moving forwardly; and(d) continuing to slide the cassette forwardly as the cassette slides over the rearward edge of the electronics arrangement from the ramp.

12. The method of claim 11, wherein step (d) is performed until a latching arrangement of the cassette latches to the tray arrangement.

13. A communications panel comprising: a chassis; a tray arrangement disposed at the chassis, the tray arrangement extending along a depth between a front and a rear and extending along a width between opposite first and second sides, the tray arrangement defining a first region and a second region, the first region having a first height, the second region having a second height, the tray arrangement defining a plurality of cassette mounting stations disposed in a row along the width of the tray, each of the cassette mounting stations extending along the depth of the tray, at least a portion of each cassette mounting station extending along a portion of the first region and a portion of the second region; and a plurality of ramps disposed at the first region of the tray arrangement, each mounting station including at least one of the ramps, each ramp transitioning between the first height of the first region and the second height of the second region.

14. The communications panel of claim 13, wherein at least a majority of the second region is disposed forward of the first region.

15. The communications panel of claim 13, wherein the tray arrangement includes an electronics arrangement mounted to a tray base, wherein the first region includes an area where the tray base is covered by the electronics arrangement and the second region includes another area where the tray base is not covered by the circuit board.

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