JPH04157855A - Processing system for alarm on transmitter - Google Patents

Abstract

PURPOSE:To gather information at a terminal station device by preventing a communicable channel from being blocked in the case of trouble on a transmission line, etc., and sending an alarm signal to the terminal station device. CONSTITUTION:If the trouble occurs on the transmission line, a bit substitution part 200 provided to the dropping/inserting device which is the closest to this transmission line receives a 1st bit for sending the alarm and inserts a signal indicating this alarm into a 2nd bit only for the alarm transmission. Then the 2nd bit is multiplexed with signal data and transferred to a 1st or 2nd opposite terminal station device 300 or 500, which is informed of the alarm. Consequently, the communicable channel is prevented from being blocked in the case of the trouble occurrence and the alarm signal is sent to the terminal station device to gather information at the terminal station device.

Description

[Detailed Description of the Invention] [Summary] Regarding an alarm processing method in a drop/insert device, the present invention aims to prevent the blockage of a communicable channel when a failure occurs, and to transmit an alarm signal to an end station device so that the end station device can perform the alarm processing method. The purpose is to provide an alarm processing method in a transmission device that enables the collection of information, by multiplexing input signal data and sending it to a transmission path, or by separating multiplexed signal data input from a transmission path. first and second terminal devices for output;
and a second terminal device are connected in series via a transmission line, inputting multiplexed signal data transferred from the first or second terminal device, and transmitting signal data of a predetermined number of channels. A plurality of devices that separate and transfer signal data to a third exchange, or multiplex signal data input from the third exchange with signal data transferred from the first or second terminal equipment and send the signal data to a transmission path. a drop/insert device, and when a fault occurs in the transmission path, an alarm is issued at the first or second terminal device or drop/insert device closest to the transmission path;
The alarm is inserted into a predetermined first bit of the transmission frame format and transferred to the opposing first or second terminal device, and the drop/insert device that receives the first bit transmits the multiplexed data. In an alarm processing method in a transmission device of a system having a function of separating a channel from a third exchange and transmitting it to a third exchange, an alarm is transmitted to a drop/insert device when the first bit is received. A bit replacement unit is provided that has the function of replacing the second bit with the second bit that only performs transmitting the second bit to the first or second terminal device,
Configure alert notifications.

[Industrial application field]

The present invention relates to an improvement in an alarm processing method in a drop/insert device (hereinafter referred to as a D/■ device).

In this case, there is a need for an alarm processing method in the transmission device that prevents the blockage of communication channels when a failure occurs, transmits the alarm signal to the terminal device, and enables the terminal device to collect information. .

[Conventional technology]

FIG. 3 is a block diagram showing the configuration of a system including an example of a D/I device.

FIG. 4 is an example frame configuration diagram.

FIG. 5 is a block diagram showing the configuration of a conventional system.

In the data transmission system shown in FIG. 5, for example, analog voice signals from subscriber's telephones 1-1 to 1-30 are input to the terminal equipment 3 via the switchboard 2 of office A, and the terminal equipment 3 For example, after converting into digital PCM data and multiplexing it, it is sent to transmission lines 4 to 4. On the other hand, at station B, which is the opposite station, the terminal equipment 5 receives the voice data from the transmission line 4-1, separates the multiplexed PCM data, and converts it back into an analog voice signal. The information is transferred to the subscriber's telephones 7-1 to 7-30 via the telephone line.

Now, for example, if a failure occurs in transmission line 4-1, from station A to B.
The data sent to the station could not be received by the terminal device 5 of station B,
Suppose that a signal disconnection is detected. Then, the terminal device 5 of the B station issues a game alarm (RMT ALM) to the A station. In this case, the RMT ALM is processed using the spare pick (SB) shown in FIG. Here, the spare bit (SB) will be explained. FIG. 4 shows the structure of a specially used frame for multiplexing and transmitting PCM data.

In the figure, it is assumed that one multiframe is composed of 0 to 15 frames (frame 0 to frame 15), and each frame is composed of 0 to 31 time slots (TSO to TS30). The TSOs of even-numbered frames (frame 03, frame 2, . . . , frame 14) are used to transmit control signals for frame synchronization. Also, the TSO of the odd-numbered frames (frame 1, frame 3, ..., frame 15) is the game alarm (
It is used to transmit control signals such as RMT, ALM), etc.

TSO is 8 bits (SBI~5B8) as shown in the figure.
SB3 was normally used to transmit game alerts (!IMT ALM). A game alarm (RMT ALM) signal was inserted into this S83, multiplexed with the main signal data, and then transmitted to the A station.

[Problem to be solved by the invention]

In the above system, stations A and B are installed facing each other, but as shown in Figure 3, there is a D
Consider the case where 0 stations with /I devices 8.9 are installed. The D/I device 8 separates, for example, 30 channels of multiplexed data transferred from the A station or the B station, and transfers the data of channels 1 to 10 of them to the exchange 10, or It has a function of multiplexing the data of channels 1 to 10 transferred from the station with the data transferred from the A station or the B station, and transferring the data to the B station or the A station. Regarding the D/I device 9, the D/I device 8
Similarly, the same operation is performed for data of channels 11 to 20, for example.

Now, when reusing the circuit of conventional terminal equipment 3 or 5 for D/I equipment 8.9 in order to reduce development man-hours, the TSO used in the terminal equipment will also be used for the game alarm (RMT ALM). Use SB3. Since the book/work device 8.9 is designed based on the terminal device 3.5, when the game alarm (RMT ALM) is received by the D/I device 8 or 9, it is sent to the D/I device 8 or 9. Corresponding channels 1 to 10 in the connected exchange 10 or 11, or 1
Block channels 1 to 20 and connect the D/I device 8 or 9.
and the exchange 10 or 110.

Therefore, if the TSO SB3 is transmitted as it is, even a communicable channel will be blocked, resulting in a problem that the communication service will be degraded.

Therefore, an object of the present invention is to provide an alarm processing method in a transmission device that prevents blockage of a communicable channel when a failure occurs, transmits an alarm signal to a terminal device, and enables the terminal device to collect information. It is about providing.

[Means to solve the problem]

The above problem is solved by the configuration of the device shown in FIG.

That is, in FIG. 1, first and second terminal devices 300 multiplex input signal data and send it to a transmission path, or separate and output multiplexed signal data input from a transmission path.
．． 500 and the first and second terminal devices 300.500 via a transmission path, and multiplexed signal data transferred from the first or second terminal device 300.500. is input, the signal data of a predetermined number of channels is separated and transferred to the third exchanges 100-1 to 100-n, or the signal data input from the third exchanges 100-1 to 100-n is separated from the first Or a plurality of drop/insert devices 800-1 to 800- that multiplex the signal data transferred from the second terminal station 300.500 and send it out to the transmission path.
n, and when a fault occurs in the transmission path, the first or second terminal device 300.500 or drop/insert device 800-1 to 800-n closest to this transmission path issues an alarm. , the drop/insert device inserts the warning into a predetermined first bit of the transmission frame format and transfers it toward the opposing first or second terminal device 300,500, and receives the first bit, In an alarm processing method in a transmission device of a system having a function of separating a channel for separating multiplexed data and transferring it to third exchanges 100-1 to 100-n from third exchanges 100-1 to 100-n. , 200 is a bit replacement unit provided in the drop/insert devices 800 to 800-n, which has the function of replacing the first bit with a second bit that only transmits an alarm when it is received.

and drop/insert devices 800-800-n
When the second bit is received by the drop/insert devices 800 to 800-n, the opposing first or second terminal device 300 .
500 and configure it to notify an alarm.

[Function] In FIG. 1, when a failure occurs in the transmission path, the bit replacement unit 200 provided in the drop/insert device closest to the transmission path receives the first bit that transmits the alarm,
A signal indicating this alarm is inserted into the second bit that only transmits the alarm. Then, the second bit is multiplexed with the signal data and transmitted to the opposing first or second terminal device 30.
0 or 500 to notify the alarm.

As a result, the first or second terminal device 300 or 50 facing the drop/insert device (for example, 800-n) that received the first bit and sent out the second bit
drop/insert devices 800-1 to 800- (in this case, the first terminal device 300)
Even if the second bit is received in the drop/insert device 800-1 due to the nature of the second bit,
~800- Third exchange 100 connected to (n-1)
-1 to 100- (n-1), transfer the second bit to the opposing first or second terminal device 300.500 (in this case, the first terminal device 300). , can notify an alarm.

As a result, it is possible to prevent the communicable channel from being blocked when a failure occurs, transmit an alarm signal to the terminal device, and collect information at the terminal device.

〔Example〕

FIG. 2 is a block diagram showing the configuration of a D/r device according to an embodiment of the present invention.

The same reference numerals refer to the same objects throughout the design.

The difference between the present invention and the conventional example is that in the D/I device that receives the TSO's SB3 game alert (RMT AIJ),
The spare bit used for the game alarm (RMT ALM) is switched to a spare bit (for example, 5B5) that performs only the game warning transmission without blocking the communicable channel.

In FIG. 3, it is assumed that, for example, 30 channels of PCM signal data are multiplexed and sent from the terminal device 3 to the transmission line-1. The D/I device 8 separates the 30 channels of multiplexed signal data input from the transmission line 4-1 and transfers (drops) the signal data of channels 1 to 10 to the exchange 10. Alternatively, 1 to 1 from the exchange 10
The signal data of channel 0 is input, multiplexed with the signal data input from the terminal device 3 via the transmission line 4-1, and sent to the transmission line 14-1 (insertion).

Similarly, the D/I device 9 separates the 30 channels of multiplexed signal data input from the transmission line 14-1, and
The signal data of channels 1 to 20 are transferred to the exchange 11 (dropped). Alternatively, the signal data of channels 11 to 20 are input from the exchange 11 and multiplexed with the signal data manually input from the terminal device 3 via the transmission path 4-1, the D/I device 8, and the transmission path 14-1. Send it to the transmission line 15-1 (insert).

The terminal device 5 of the B station inputs the multiplexed signal data from the above-mentioned transmission line 15-1, demultiplexes it, converts the PCM data into an analog audio signal, and then connects the signal data via the exchange 6. 7-1 to 7-30. Alternatively, analog audio signals input from subscriber telephones 7-1 to 7-30 via the exchange 6 are converted into digital PCM signal data and multiplexed, and then the transmission line 15
-2. Thereafter, the D/1 device 9.8 performs the same drop or insert operation as described above.
The multiplexed signal data is transferred to the terminal device 3 of the A station.

Now, the transmission path 15 between the D/1 device 9 and the terminal device 50 of the B station
Assume that a failure occurs in -1 and an alarm is issued.

Then, the terminal device 5 of the B station detects a signal interruption due to this failure and issues a game alarm (RMT ALM). In this case, as explained in the conventional example, a signal indicating a game alarm (RMT ALM) is inserted into the SB3 bit of the TSO, multiplexed with the main signal data, and sent to the transmission line 15-2.

In the D/I device 9'' shown in FIG.
(referred to as the UX section) 16 separates the multiplexing. Then, the TSO inserts a signal indicating a match alert (RMT ALM).
SB3 (this bit is RMT-A) is RM
The signal is input to the T reception processing section 17 and output to the channel unit (CH unit) 18 as well as to the memory 19.

In the CH unit 18, this D/I device 9° is connected to the exchange 1.
The use of channels 11 to 20 that are transferred to 1 is prohibited. Further, in the memo January 9, when the above-mentioned signal to RMT~ is input, the corresponding signal is output from SB3 in the memory 19 and added to the buffer 20. In the buffer 20, only when the output signal of SB3 is input from the memory 19,
A signal corresponding to SB5 of the memory 19 is output. Then, a game warning (this bit is set to R4↑-B) is output from SB5 of the memory 19, inserted into S85 of the TSO, multiplexed with the main signal data, and sent to the transmission line 14-2. In this case, RMT-B only transmits a game warning.

Thereafter, the D/I device 8 receives the multiplexed signal data (
(including RMT-B), the drop or insert operation is performed with the exchange 10 as described above, but in this case, the D/I device 8 separates or multiplexes the 1
Channels 1 to 10 are not disconnected from switch 10, and channels 1 to 10 can be used as before. Then, the game alarm (RMT-B) is transferred to the terminal device 3 of the A station to notify that a failure has occurred in the transmission path 15-1.

Note that the game alarm (R
MT-A) and RM with the D/I device in the same manner as above.
It is possible to replace T-B, prevent blockage of a communicable channel, and transfer a game alarm (RMT-B) to the terminal device 3 to notify a failure.

Further, the number of D/I devices is not limited to two as described above (the above-described operation can still be achieved even if as many as possible are connected).

In this way, it is possible to prevent failures in transmission paths, particularly blockage of communicable channels, and to transmit alarm signals to the terminal equipment. Information can then be collected by the terminal device.

(Effects of the Invention) As described above, according to the present invention, it is possible to prevent blockage of a communicable channel when a failure occurs in a transmission path, etc., and to transmit an alarm signal to a terminal device. Information can then be collected by the terminal device.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention. FIG. 2 is a block diagram showing the configuration of a D/I device according to an embodiment of the present invention. FIG. 3 is a block diagram showing the configuration of a system including an example of a D/I device. , FIG. 4 is an example frame configuration diagram, and FIG. 5 is a block diagram showing the configuration of a conventional system. In the figure, 200 indicates a bit replacement section.

Claims (1)

[Claims] First and second terminal devices (300, 500) that multiplex input signal data and send it to a transmission path, or separate and output multiplexed signal data input from a transmission path. and the first and second terminal equipment (300, 500) are connected in series via a transmission line, and are transferred from the first or second terminal equipment (300, 500). Input the multiplexed signal data, separate the signal data of a predetermined number of channels, and transfer it to the third exchange (100-1 to 100-n),
Alternatively, the signal data input from the third exchange (100-1 to 100-n) is transmitted to the first or second terminal equipment (300-n).
A plurality of drop/insert devices (8
00-1 to 800-n), and when a failure occurs in the transmission path, the first or second terminal device (300, 500) or drop/insert device (800-n) closest to the transmission path
00-1 to 800-n), inserts the alarm into a predetermined first bit of the transmission frame format, and transmits it to the opposing first or second terminal device (300, 500). The drop/insert device that has received the first bit separates the multiplexed data and transfers it to the third exchange (100-1 to 100-n). -1 to 100-n), in which the drop/insert device (800 to 800-n) transmits the alarm when the first bit is received. A bit replacement unit (2
00), and when the second bit is received by the drop/insert device (800-800-n), without disconnecting the third exchange connected to the drop/insert device (800-800-n). , the opposing first or second terminal equipment (3
1. A method for processing an alarm in a transmission device, characterized in that the second bit is transferred to a signal (00, 500) to notify an alarm.