JPS63221694A - Method of constituting communication equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] When configuring a communication device such as a multiplexer, the present invention adopts a rear access method when the device is installed in a large area of a station building, and In order to use the front access method when installed in a location, a common shelf is basically used, and a rear access kit or front access kit can be selectively installed on top of this depending on the circumstances of the station building. be.

[Industrial application field]

The present invention relates to a method of configuring a communication device, and more particularly to a method of configuring a multiplexer used for multiplex communication into a rear access type or a front access type.

Conventionally, connections between devices in this type of communication equipment are often made in relatively large stations or relay stations, where there is plenty of space for installing the equipment, and the so-called rear access method is used to connect equipment from the rear of the equipment. was the main focus.

However, in recent years, in order to increase the capacity of the equipment, it is often necessary to install these communication equipment in a relatively narrow space in the station building (i.e., there is only enough space for a person to enter and work behind the equipment). There are cases where it is necessary to use a so-called front access method in which devices are connected from the front side of the devices.

For this reason, it has become necessary to share the equipment in a station building where the communication equipment is to be installed so that the equipment can be assembled using both rear access and front access methods.

[Conventional technology]

Figure 7 shows the conventional M13 MIX (multiplexer)
1 schematically shows a multiplexing device called .

In FIG. 7, 50 is a box-shaped shelf that accommodates components (not shown) constituting the optical communication device. The height of one shelf 50 is, for example, 6u (1u = 44.4
5 -), and these shelves 50 are installed in the station building so as to be stacked in several stages using racks (not shown). A low-order group side external line connector 52, a high-order group side external line connector 53, etc. are attached to the back panel 51 of each shelf 50, and connections between each device (shelf) 50 are made with an external line connecting connector cable ( (not shown).

[Problems to be solved by the invention] The conventional multiplexing device (M13MIX) as shown in FIG.
), the outside line connectors 52 and 53 are fixed to the back side of the shelf 50, so there is a problem that the outside line cable cannot be connected from the front side, that is, it cannot be used as a front access method.

[Means for solving problems]

In order to solve these problems, according to the present invention,
A box-shaped common shelf that accommodates the components that make up the optical communication device, and a rear panel of the same height that can be mounted on the common shelf and has a connector section to which connector cables can be connected from the rear and front sides of the device, respectively. There is provided a method for configuring an optical communication device comprising an access kit and a front access kit, the rear access kit and the front access kit being alternatively mounted on a common shelf.

[For production]

According to the present invention, since the rear access kit or the front access kit can be selectively installed on the common shelf, either the rear access method or the front access method can be used depending on the circumstances of the station building or relay station where the communication equipment is installed. But it can be adopted. In addition, mutual systems can be easily changed by simply exchanging these kits.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Figures 1 and 2 show a digital multiplexer called M13 MUX, where lO is a box-shaped common shelf in which parts of communication equipment (not shown) are housed, and its height is For example, 6u (1u = 44.45
A plurality of circuit packages in the form of packages in which various components constituting an optical communication device are mounted on a printed circuit board (not shown) are housed inside the common shelf 10, which is (m). There is. A lower-order group side external line connector 12 and a higher-order group side external line connector 13 are attached to the back panel 11 of the common shelf 10. These connectors 1
2.13 connects the common shelf 10 via the back panel 11
to a circuit package (not shown) within the circuit.

Rear access kit 20 (second
Figure (a)) or front access kit 30 (Figure 2)
Either one of b)) is selectively installed. kit 2
Installation of 0 or 30 or exchange between the two is accomplished by tightening the four screws 16 shown in FIG.

These kits 20.30 have almost the same width and depth as the common shelf lO, and both have heights of 1u (-44, 45
m), therefore, when mounted on the common shelf 10, the total height per shelf is 7U (approximately 311 cranes).
0 using the flange parts 14 on both sides of rack 15 (6th
(Fig. 6), they can be stacked in several tiers as shown in Fig. 6, and installed in station buildings or relay stations.

As shown in FIG. 2 (al) and FIG. 3, the rear access kit 20 has a plurality of connectors 21 installed near its back, and a cable 22 extending from the low-order group side external line connector 12.
is connected to this connector 21 by wrapping from the back side.

The connector 21 has a large number of pins protruding from the rear side of the device, and a lower-order group side connector cable 23 (FIG. 6(a)) is fitted and connected from the rear side of the device. On the other hand, the higher-order group side external line connector 13 is a coaxial type connector, and the higher-order group side connector cable 24 (see Fig. 6(a)
) are mated and connected. Other connectors 18 as necessary
, 19 (FIG. 3) are also connected to each other by external cables (not shown). FIG. 6(a) shows the common shelf 10
This is a rear access method by stacking six stacks of equipment with the rear access kit 20 attached on top, and the operator must connect the equipment from the rear of the equipment using the aforementioned cables 23, 24, etc. First, it requires space at the rear of the device.

As shown in Figure 2 (bl, Figures 4 and 5),
A plurality of connectors 31 are installed near the front of the front access kit 30, and a cable 32 extending from the low-order group side external line connector 12 is wrapped and connected to the connector 31 from the back side. The connector 31 has a large number of pins protruding from the front side of the device, and a lower-order group side connector cable 33 (FIG. 6(b)) is fitted and connected from the front side of the device.

On the other hand, the coaxial type high-order group side external line connector 13 connects to the cable 35 passing through the opening of the flange 14.
It is connected to an external line connector 37 on a terminal board 36 mounted at the front side of the common shelf 10. This external line connector 37 is a coaxial type like the connector 13, and is connected to the higher order group side connector cable 34 (
FIG. 6(b)) is fitted and connected. Other connectors 18, 19 (FIG. 5) are also connected as required via cables to connectors on terminal boards 36 mounted on one or both sides of the common shelf IO. Figure 6 (bl) is a front access system in which front access kits 30 are installed on a common shelf 10 and stacked in six tiers, and the operator accesses the above-mentioned cable 33 from the front side of the equipment.
．． 34 etc. can be used to connect devices. Therefore, it is sufficient if there is a gap S (about 1Q cm) between the back of the device and the wall 40 of the station building, which is sufficient to allow air to circulate. Note that the cables 33 and 34 extend along the rack 15.

〔Effect of the invention〕

According to the present invention, a common shelf 10 can be used in both the rear access method and the front access method, and either method can be easily adopted depending on the actual situation of the station building or relay station. Furthermore, it is possible to easily change between the rear access method and the front access method in the field, and it is possible to cope with high-density packaging of communication devices.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an embodiment of the present invention, and FIG. 2 (al,
(bl is a schematic cross-sectional view of the rear access method and front access method, Fig. 3 is a perspective view of the device assembled in the rear access method, Fig. 4 is a perspective view of the device assembled in the front access method, and Fig. 5 is the same Rear view, Fig. 6(a),
(BL is an overall perspective view of the device assembled in the rear access method and the front access method, and FIG. 7 is a schematic sectional view of the conventional device. 10... Common shelf, 11... Bank panel, 20...・Rear access kit, 30...Front access kit.

Claims (1)

[Claims] 1. A box-shaped common shelf that accommodates components constituting a communication device, and a box-shaped common shelf that can be mounted on the common shelf and that connects external line connection connector cables from the rear and front sides of the device, respectively. It has a connector part. A method for configuring a communication device, comprising a rear access kit and a front access kit of the same height, and the rear access kit and the front access kit are alternatively mounted on a common shelf.