JPH04100397A - Changing method for cross connect device - Google Patents

Abstract

PURPOSE:To shorten a channel changing time by operating controls due to a CPU towards transmitted data, at each one part of an inputting side and an outputting side. CONSTITUTION:For example, the 1 bit changeover information of the output of a signal generator 1, inserted into the data of each channel at the inputting side, is transmitted to an outputting side interface part 1002 with the data of each channel, by the output of a controlling part 11 mounted with the CPU in an inputting side interface part 1001. However, when a fault occurs at a certain channel of a plural channel active side switch system 20, the data of the fault channel of the active side switch system 20 are changed into the applicable channel data of a preliminary side switch system 30 by detecting the 1 bit changeover information of the channel by a detector 2 at the outputting side 1002. The controlling part mounted with the CPU which controls the data of each channel is provided at each one part of the inputting side interface part 1001 and the outputting side interface part 1002, so that the time required changeover can be shortened.

Description

[Detailed Description of the Invention] [Summary] Data from the input side interface section of multiple channels is transmitted by a working side switch system and a standby side switch system consisting of a one-hour switch T-5- and a space switch 5-8-. ,
Regarding cross-connect devices that select and output either active system output data or backup system output data from the output side interface section, when switching to the backup side SW system when a failure occurs in the active side SW system, the switching With the aim of providing a switching method for cross-connect devices that requires less time for
It is equipped with a signal detector driven by a control unit equipped with a PU, and when a fault occurs in a channel of the active switch system, the control unit equipped with a CPU on the input side converts the output of the signal generator into data for each channel. It is inserted as switching information and transmitted together with the data to the output side, and on the output side, the signal detector is driven by a control section on the output side to detect switching information of the output of the signal generator from each channel data.

Data on the faulty channel of the active switch system.

It is configured to switch to and output the data of the corresponding channel of the output of the standby side switch system.

[Industrial application field]

The present invention relates to a cross-connect device that electronically sets up a line in units of basic multiplexed signals for digital multiplexed signals of multiple channels of a new international standard synchronous interface, and in particular, it relates to a cross-connect device that electronically sets up a circuit in units of basic multiplexed signals. Regarding the switching method for switching to .

Since the cross-connect device is a device whose main purpose is to set line routes, when a failure occurs in the active switch,
It is necessary to switch to the backup system switch in a short time.

[Conventional technology]

Conventional cross-connect equipment handles only a small number of lines and is therefore small-scale, so although it is not shown in the figure, one
Time switch TSW IN on the input side of time division, space switch 5-sh, time switch T-5W O[I on the output side
Since it was possible to mount each of the switch units sw, , sw, of the T in one shelf, each of the switch units sw, , sw, could be controlled by one control unit. Therefore, for example, if a failure occurs in a channel consisting of the active SW, the control unit of the SW1 collects the failure information of the gl s w, and sends it from there to the corresponding interface section, where it is sent to the corresponding interface of the standby SW. I had switched to the channel.

[Problem to be Solved by the Invention] However, recently there has been a demand for a cross-connect device that can handle a large number of lines, so the switching units SW + and S W o of the active system and standby system are , can no longer be composed without being distributed into multiple parts.

Therefore, when switching is performed using the same method as before, the fault information collected in the control unit of each sw, , sw is sent to the system control unit that has all the line setting information, and the fault information is sent from the control unit of the interface unit. A switching signal is output to perform switching.

Therefore, when switching from a channel in the active SW system 20 to a corresponding channel in the backup SW system 30 when a failure occurs, the switching signal is sent via three control units, each of which is equipped with a CPU. Therefore, there was a problem in that the switching time was too long.

An object of the present invention is to provide a switching method in a cross-connect device that requires less time for switching to the corresponding channel of the protection SW system when a failure occurs in a channel of the active SW system. .

[Means to solve the problem]

This problem, as shown in the principle diagram of FIG. The data is transmitted between the working side switch system 20 and the standby side switch system 30, which are composed of a time switch (T-SW) and a space switch (SSW), and the working side data or standby side data is transmitted from the output side interface section 100□. In a cross-connect device that selects and outputs, a signal generator 1 driven by a CPU-equipped control unit 11 in the input-side interface unit 1001 and a CPU-equipped control unit 12 in the output-side interface unit 100□. a signal detector 2,
When a failure occurs in a channel of the active side switch system 20, the output of the signal generator I is inserted into each channel data as switching information by the output of the CPU-equipped control unit 11 on the input side, and sent to the output side together with the data. On the output side, the signal detector 2 is driven by the output of the output side control unit 12, and the switching information of the output of the signal generator is detected from each channel data, and the faulty channel of the working side switch system 20 is detected. This is achieved by the present invention, which is configured to switch the data to the data of the corresponding channel of the output of the standby side switch system 30 and output it.

C action] Input side interface section 100. For example, 1-bit switching information for the output of the signal generator 1 inserted into the data of each channel on the input side is transmitted to the output side together with the data of each channel by the output of the control unit 11 equipped with a CPU. When a failure occurs in a channel of the working side switch system 20 of multiple channels, one of the channels on the output side
By detecting the bit switching information with the detector 2, the data of the faulty channel in the working switch system 20 is switched to the corresponding channel data in the protection switch system 30.

The switching method in the cross-connect device of the present invention is such that the CPU-equipped control unit that controls the data of each channel has only one control unit 11 and one control unit 12 in the input side interface unit and the output side interface unit, respectively. , the time required for switching is shortened and the problem is solved.

〔Example〕

FIG. 2 is a block diagram showing the configuration of a switching method in a cross-connect device according to an embodiment of the present invention. In FIG.
n-channel serial data Cl 1 to C input to
Hn is converted into parallel data by the internal S/P converters (1) to (n), and the current interface INF (1) and backup interface INF (2) are controlled by the output of the control unit 11. On the output side, the output of the signal generator 1 of 9 bits, for example, 1 bit, is added to each channel's data to switch information S.
W, as shown in the frame configuration diagram in Figure 3 (,
It is assumed to be m-bit parallel data. Then, the working side switch system 20 and the standby side switch system 30 pass through the respective space switch units 5-5W, 5S-0, and reach the output side interface unit 100! (1) to (n).

The output side interface section 100□ is connected to the internal control section 12.
Active side interface INF (3) controlled by
On the output side of the standby side interface (4), the switching information S- of the 1-bit signal extracted from the data string is detected by the detector 2.
and switches the channel of the working side switch system 20 to the corresponding channel of the standby side switch system 30. After that, with n-channel P/S converters (1) to (n),
Convert parallel data to serial data and output data C
Outputs I1 to CHn.

After that, the first channel C1 among the plurality of n channels
Only the data of the interface section (1) of l1 will be explained.

Input side interface section 100. The data output from (1) is sent to the time switch TS IN on the input side of the active system.
The information is input to section (1). Here, T-SW IN section (1)
When a failure occurs in the T-5W IN section (1), the OR output of the 1-bit switching information sh inserted into the data and the failure information is added to the data as new switching information S-. The data is then sent to the space switch 5-SW section, where the data to be sent to the time switch T-5W 0jIT section on each output side is replaced, and the normal data sent from other T-5W IN sections is replaced. Therefore, the switching information SW includes bits that are ON and bits that are OFF. The data into which this switching information sh has been inserted passes through the time switch T-5W 0IJT section (1) and is input to the output side interface section 100□, where the switching information is extracted and the detector 2 checks the 0N10FF. When some of the bits in the switching information store are ON, the control section 12 performs channel switching control and selects the data sent from the backup system 30, thereby switching the active system 2o from the backup system. Data can be switched to the system 30.

C Effects of the Invention] As explained above, according to the present invention, since the control by CP[J for transmission data is only performed at one place each on the input side and the output side, It is possible to shorten the time it takes to switch channels. In addition, in the space switch section of the switch section, the Tatsumi data and switching information distributed to each interface section on the input side are
Since the signal is always input to each output side interface section through the same transmission path, there is no need to centrally control all channels, and the effect of simplifying the circuit configuration can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a principle diagram showing the basic configuration of the switching method in the cross-connect device of the present invention;

Claims (1)

[Claims] The data from the input side interface unit (100_1) that inputs data of multiple (N) channels is transferred to the active side switch system ( 20) and a backup switch system (30), and selects and outputs either the output data of the active system or the output data of the backup system from the output side interface section (100_2). A signal generator (1) driven by a CPU-equipped control unit (11) in the interface unit (100_1) and a signal detection driven by a CPU-equipped control unit (12) in the output side interface unit (100_2). When a failure occurs in a certain channel of the active side switch system (20), the output of the signal generator (1) is switched to each channel by a control unit (11) equipped with a CPU on the input side. It is inserted into the data as switching information and transmitted to the output side together with the data, and on the output side, the control unit (12) on the output side detects the signal detector (2).
) to detect the switching information of the output of the signal generator from each channel data, and to detect the switching information of the output of the signal generator (20).
The faulty channel data is sent to the standby switch system (30
) in a cross-connect device, the switching method is characterized in that the output of the channel is switched to the data of the corresponding channel.