JPH0279625A - Transmission equipment - Google Patents

Abstract

PURPOSE:To attain miniaturization and integration by reducing the number of transmission path access parts by utilizing a folding function by a current use/spare switching device. CONSTITUTION:A low-order group input signal 10 is inputted to a multiplex converter 2 in current use via a current use/spare switching device 1, and passes a U link (transmission access part) 4, and is converted, for example, from a bipolar code to a unipolar code at a low-order group input interface part 5, then, it is multiplexed at a multiplex conversion part 7. After that, it is U/B- converted at a high-order group output interface 8, and is outputted as a high- order group output signal 11. Meanwhile, a high-order group input signal 12 is B/U-converted at a high-order input interface 9 via the U link, and after that, it is multiplex-separated at the multiplex conversion part 7, and it is U/B- converted at a low-order output interface 6, then, is outputted as a low-order group output signal 13 via the current use/spare switching device 1. In such a way, since the number of the transmission path access parts can be reduced to around 1/2, the device can be miniaturized and highly densified.

Description

[Detailed Description of the Invention] [Field of Application of Higashi Togami] The present invention enables ITIM to be miniaturized and to achieve ITIM by reducing the number of transmission path access sections! It is related to tlK.

[Conventional technology]

Up until now, I have been working on "transmission facility design for digital networks."
(Noboru Teranishi, Takashi Kitamura, published by the Electronic Communications Association (August 10, 1982)) Figure 4.17
5, U-links for accessing the transmission path are provided corresponding to the input and output terminals of the transmission device.

[Problem to be solved by the invention]

However, in the conventional K, no particular consideration has been given to the method of accessing the transmission path in the case where the devices are densely deployed and have high efficiency, such as when they are made into LSIs. In the past, even if multiple lines of transmission lines could be accommodated in one package, it would be necessary to provide transmission line access sections for 2X·m (m: the number of accommodated transmission lines). , This makes the FC installation smaller,
It is becoming difficult to integrate.

An object of the present invention is to provide a smaller and more integrated transmission device by reducing the number of transmission path access points.

Means for Solving Problem C] The above-mentioned feature is to enable a plurality of transmission lines accommodated in the working yarn device and the standby system devices to be turned back to the transmission line mother by the working standby switching device, and to connect the transmission line access section. This is achieved by providing the following on the transmission line input side interface corresponding to the transmission line in the active system device and the transmission line output side interface corresponding to the transmission line in the standby system device.

[Effect]

Utilizes a spare switching device for grinding and a turn-around function.

The aim is to reduce the number of transmission path access units to 172. In other words, the input signal is taken out from the transmission line by the transmission line access section provided in the active system equipment, and the output signal is inserted into the transmission line by switching to the protection system equipment and then accessing the transmission line installed in the protection system equipment. At the access section, the output signal from the active device is taken out by looping the device back to the side, and the input signal is inserted into the active device at the transmission path access point provided in the active device. By using the transmission path access section provided in the active system device, it is possible to access the transmission path in the same way as in the conventional system with the number of transmission path access sections reduced by 1 to 172.

〔Example〕

Hereinafter, the present invention will be explained with reference to the accompanying drawings.

The figure shows the configuration of an example of a multiplex conversion device to which the present invention is applied. In the case of K, the entire multiplex conversion aA system is composed of a working and standby switching device 1, a working multiplex converter [2] and a standby multiplexing converter 3.
2 and the preliminary multiplex converter 3 have basically the same configuration. However, it is also possible to eject the extension link c as a transmission path access part) 4.18 Push-in position &
i2.5 is a low-order scale input ink face 5, a low-order scale output interface 6. Multiple conversion s7,? It basically consists of an ih-order liver output interface 8 and a high-order group input interface 9, but among the components of these components, the low-order group interfaces 5 and 6 are multiplexed by the number of multiplexers 2,
It is set up within 3.

Now, the reason shows the normal state, and the low-order group input signal 10 from the outside is inputted to the congratulatory multiplex converter 2 via the working/standby switching device 1.

First, code conversion (for example, conversion from bipolar code to unipolar code CB/UR conversion 2) is synchronized at the low-order group input interface unit 5 through the U link 4, and then the multiplex conversion unit 7 performs code conversion for the number of multiplexed codes. It is designed to be multiplexed. 70f is subjected to scrambler processing and code conversion (for example, conversion from univollar code to bipolar code (U/BK conversion)) at the high-order group output interface 8, and then outputs the i1b order group output chig via the U link. It is designed to be output as No. 11. On the other hand, in contrast to this, the high-order group input signal 12 from the outside is descrambled after B7U conversion by the high-order group input interface 9 via the processing U link, and further synchronized with multiple x conversions s7, and multiple K so that the signals are separated and obtained as low-order n-speed signals corresponding to the number of multiplexed signals. Each of these signals is output as a U/B conversion image next group output 1! at the low order group output interface 6. It is designed to be outputted onto the transmission path as No. I 13 via the active/standby switching device 1.

By the way, the dust backup switching device [1] switches to the backup system when the current system becomes abnormal, and has relay contacts 14 to 17.
However, in this example, the number of relays in the active standby switching system &1 should be reduced (in the normal state, the standby system is busy in the internal loopback state). At the time of switching, the active system is automatically placed in the internal loopback state.However, if a relay is also used, these controls, that is, internal loopback and active backup switching, can be executed independently. It is also possible to harvest the seeds.

Here, to explain the case where transmission path access is performed, first, in the normal state, the low-order group output 1 from the transmission path is
! I10 can be removed using U-link 4.
Insertion of the input signal 10 into the spacer 2 can also take place by means of a U-link 4. In addition, the low-order group output signal 13 to the transmission path
can be inserted by switching the standby cutter 9 for bowls 1 to the standby system and using it as a signal from the U link 18, and for taking out the output 1g from the multi-layer device 2 for lumps, the spare cutter 9 for the bowl can be used as a signal from the standby system. 1 to the standby system, that is, the low-order group side of the working multiplex converter 2 can be brought back into the working device and taken out from the U-link 4.

In addition, the low-order group output f8 from the preliminary multiplex converter 3 is taken out by the U IJ link 18, and the insertion of the low-order group manual signal of the preliminary multiplex converter 6 is also performed by the IJ link 1B in the normal state. It is something that can be done.

In this example, for each input and output on the crystalline group side, (J
An IJ link is implemented, but since there is only one pair for every one space on the Karasugi side, two U links are placed next to each other, and it is clear that the TL will not be an obstacle to device miniaturization. be. Of course, there is also a currently used kiribetsu device on the side of Shima V, and with RI, in other words, if you are performing a scissor kiribetsu of Takatomo Kyojo, and if the bottom is 5m, it will be a low-order group. It is possible to reduce the U IJ link on the higher-order pillar side by half at the same time as the side and 1TjJ rest.

In addition, normally, in order to perform loopback without having to perform internal loopback in the active standby 9-honor device 1, an additional 1 card is required (as shown in the figure).
There are only 11 relays per line, which is insignificant. The relay for turning back is provided in the working standby cutting V straight 1, but it is of course possible to have it in the multi-XIS device.

〔Effect of the invention〕

As explained above, according to the present invention, the number of transmission line access parts for accessing the transmission line can be reduced to about 172, which is very effective in reducing the size of the device and increasing the packing density.

[Brief explanation of the drawing]

The figure is a diagram showing the configuration of an example of polyspasmodic convulsion #2 to which the present invention is applied. 1... Working standby cutting equipment & 2... Desk multiplexer equipment 3... Backup multiplex converter 4.18... U link (transmission line access S) 5...
Low-order group input interface 6...Low-order group output interface 7...Multi-X conversion unit 8...^Next group output interface 9...-Next group input interface agent Patent attorney Katsuki Ogawa

Claims (1)

[Claims] 1. In a transmission device consisting of an active system device, a standby system device, and an active standby switching device, multiple transmission paths accommodated in each of the active system device and standby system device can be looped back for each transmission by the active standby switching device. A transmission device characterized in that a transmission path access section is provided at a transmission path input side interface corresponding to a transmission path in an active system device and at a transmission path output side interface corresponding to a transmission path in a standby system device.