JP2543755B2 - Test method for common line signaling - Google Patents

Description

DETAILED DESCRIPTION [Overview] Regarding a test method for performing a construction test of a signal line of a common line signal system and a communication line, it is possible to perform a common line signal system communication test by itself. The receiving station code DPC and the originating station code OPC in the receiving MSU are exchanged with each other, and when the line number CIC is odd, 1 is subtracted and 1 is added when it is even. An MSU analysis unit that determines and starts a reception processing unit that performs processing corresponding to the information according to various information, a changeover switch that can be set by switching between a test state and an operating state of the electronic exchange, and a changeover switch Receive MSUs when the
Is sent to the MSU analysis unit as it is, and when it is in the test state, it has a switching monitoring unit that sends the received MSU to the MSU analysis unit via the MSU changing unit, and the common line signal link control device of two lines to the same opposite station is folded back to each other. In addition, the line number CIC for transmitting / receiving the MSU using the two lines is adjacent and the call circuit of two lines to the same opposite station with an odd value> an even value is folded according to the processing result in the reception processing unit. It is configured by performing a common line signaling connection call test by itself by performing control.

[Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a common line signaling system test method for conducting a construction test on a signal line and a communication line in an electronic exchange equipped with a common line signaling system.

[Conventional technology]

As a relay line signaling system for transmitting and receiving control information between two exchanges, an individual line signaling system for transmitting control information through a communication line and a dedicated line (common line) are provided and digitized on it. There is a common line signaling system for transmitting control information.

Unlike the individual line signal system in which the signal line and the communication line are integrated, the common line signal system has the signal line independently of the communication line, so that various information can be transferred between stations at any time and at high speed. Therefore, it can be expected that the connection time between stations will be shortened, the intra-station service will be expanded between stations, and ISDN will be supported, and the demand for introduction in the PBX market is increasing.

When introducing such a common line signaling method, it is necessary to consider the connection test with the opposite station, especially when the opposite station cannot perform the opposite test yet. It is required to be able to test in.

In the individual line signal system, when the opposite station is in a state where it is not possible to perform the opposite test, by setting a jumper for returning to the other repeater line on the jumper rack MDF for the repeater line for this opposite station, , The connection test to the opposite station can be performed only by the own station.

However, in the case of the common line signal system, the same method as the individual line signal system cannot be adopted for the following reason.

That is, in the common line signaling system, different signaling station codes are assigned as station numbers to all the exchanges in the network, and different line numbers are also assigned to the call lines between two opposing stations. And the line numbers must match between the two stations.

Therefore, if the signal station code is incorrectly set between the two stations, the call line becomes unusable, and even if the signal station code settings match, the call line can be used if the line number settings are wrong. However, it becomes impossible to talk when connecting.

If the opposite station is in a state where it cannot perform the opposite test, if a jumper is performed on the MDF of the signal line to this opposite station to the other signal line for this opposite station, a jumper is sent from any signal line. Receiving station code DPC in common line significant signal unit MSU received by returning to other signal line on rack MDF
Does not match the signal station code of its own station, so that the common line significant signal unit MSU is discarded and the connection operation cannot be performed.

As a means for solving such a problem, the receiving station code of the opposite station in a state where the opposite test cannot be performed is registered as one of the own station identification codes, and the incoming call in the received common line significant signal unit MSU is registered. When the station code DPC coincides with the registered signal station code, a method of treating it as an incoming signal of its own station is considered, and it has already been disclosed in JP-A-61-236262.

However, in the above method, firstly, there is a problem that the operation of registering the own station identification code is troublesome, and secondly, since there is no consideration for the line number CIC value in the receiving MSU, the line by transmitting and receiving the test MSU Even if the capture test can be performed, there is a problem in that it is not possible to perform call connection and call confirmation by MSU transmission / reception for call connection.

That is, each of the two call lines folded back on the jumper rack MDF has a line number CIC, and when one of them is captured and a trunk line is sent, a common line for call connection request accompanying the call is made. The significant signal unit MSU is sent to the opposite station using any one of the signal lines corresponding to the communication line, but is folded back on the jumper rack MDF and received by the own station from other signal lines. . The receiving station code DPC in the received common line significant signal unit MSU is registered as the own station identification code, so it is analyzed and processed, but at this time, the line number CIC in the common line significant signal unit MSU has been captured. Since the value of the line is shown, the analysis processing unit considers it as an outgoing / incoming call collision, and therefore the line release process is executed.

Therefore, even if there is a communication line in which communication is not possible due to a transmission line failure in the own station, the failure cannot be detected until the opposite test is performed.

[Problems to be Solved by the Invention]

SUMMARY OF THE INVENTION The present invention is intended to solve such a problem of the prior art, and in an electronic exchange equipped with a common line signaling system, a common line signal capable of performing a common line signaling system call test by itself. The purpose is to provide a test method in the method.

[Means for Solving the Problems] FIG. 1 is a principle configuration diagram of a test system in the common line signaling system of the present invention. As shown in FIG. 1, the present invention relates to a common line signaling system electronic switch that performs call control processing according to a common line significant signal unit MSU from a common signal line,
MSU change unit 1, MSU analysis unit 5, and changeover switch 2
And a switching monitoring unit 3, and by performing call control according to the processing result in the reception processing unit in a state where two lines for the same opposite station with adjacent line numbers CIC and odd values> even values are looped back. This is to conduct the common line signaling connection call test by itself. Here, MSU change unit 1
Replaces the receiving station code DPC with the originating station code OPC in the receiving MSU, and subtracts 1 from the line number CIC when it is odd and adds 1 to it when it is even.

The MSU analysis unit 5 determines a reception processing unit that performs processing corresponding to this information according to various information in the received MSU, and activates this reception processing unit.

The changeover switch 2 can be set by switching between a test state and an operating state of the electronic exchange.

When the changeover switch 2 is in the operating state, the changeover monitoring unit 3 sends the received MSU to the MSU analysis unit 5 as it is, and when the changeover switch 2 is in the test state, the received MSU is MSU.
It is sent to the MSU analysis section via the change section 1.

Therefore, the configuration of the present invention is as follows. That is, in the common line signaling type electronic exchange that performs call control processing according to the common line significant signal unit MSU from the common signal line, the receiving station code DPC and the transmitting station code OPC in the receiving MSU are exchanged, and the line number CIC Is an odd number, subtracts 1 from this when it is an even number, and adds 1 to this when determining an MSU change unit (1) and a reception processing unit that performs processing corresponding to the information in the received MSU. MS that activates the reception processing unit
A U analysis unit (5), a changeover switch (2) that can be set by switching between a test state and an operating state of the electronic exchange, and a receiving MSU as it is when the changeover switch (2) is in an operating state A switching monitoring unit (3) for sending the received MSU to the unit (5) and sending the received MSU to the MSU analysis unit (5) via the MSU changing unit (1) when the changeover switch (2) is in a test state, The common line signal link controllers of two lines for the same opposite station are folded back to each other, and the line numbers CIC for transmitting and receiving MSUs using the two lines are adjacent to each other. A test method in the common line signaling method, characterized in that a connection call test of the common line signaling method is performed by itself by performing call control according to the processing result in the reception processing unit in a state where the communication line is folded back. It has a configuration as.

[Work]

In FIG. 1, A is a common line signal link control device, which manages a signal line and, when receiving a common line significant signal unit MSU from the signal line, sends a received signal to the MSU.
It is sent to the reception processing device B. Further, the common line significant signal unit MSU received from the MSU transmission request processing device C is sent to the signal line.

In the MSU reception processing unit B, when the MSU receiving unit 4 receives the common line significant signal unit MSU from the common line signal link control unit A, the MSU receiving unit 4 stores the common line significant signal unit MSU and then activates the switching monitoring unit 3.

The switching monitoring unit 3 extracts the state of the changeover switch 2 for switching between the test / operation and when the test is in progress.
The MSU changing unit 1 is activated, and the MSU analyzing unit 5 is activated when it is in operation.

The MSU changing unit 1 replaces the called station code DPC with the calling station code OPC in the received MSU, further subtracts 1 from CIC if the line number CIC is an odd value, and adds 1 if it is an even value. , MSU analysis unit 5 is started.

The MSU analysis unit 5 determines the reception processing unit in the reception processing unit E according to various information in the common line significant signal unit MSU, and activates this reception processing unit.

D is a call control processor, which performs call control based on information from the MSU reception processor B, and if necessary, MS
The U transmission request processing device C issues an MSU transmission request.

If the changeover switch 2 is now set during the test, in the configuration shown in FIG. 1, the first effect is that the source station code OPC and the destination station in the received common line significant signal unit MSU are received. Since the code DPC is replaced and the analysis process is performed, it looks as if the normal common line significant signal unit MSU was received from the opposite station.

As a second action, if two lines with adjacent line numbers CIC and odd values> even numbers are folded back on the jumper rack MDF by the jumper, the received line signal CIC in the common line significant signal unit MSU Since the analysis processing is performed after -1 or +1 according to the odd value or the even value, it seems that there is an incoming call from one line and then the other line. If you perform an incoming call connection operation, it will appear as if you are connected to the opposite station.

〔Example〕

FIG. 2 is a schematic configuration diagram for explaining a test method in the common line signal method as one embodiment of the present invention.

In the local exchange N (hereinafter abbreviated as the local station N), CC is a central control unit, which includes the MSU reception processing unit B, the MSU transmission request processing unit C, and the call control processing unit D shown in FIG. Included inside. CSE1 and CSE2 are common line signal control devices and correspond to the common line signal link control device A shown in FIG.

The common line signal control devices CSE1 and CSE2 are connected to the central control device CC by a communication path p and communicate with each other.
Further, the common line signal control devices CSE1 and CSE2 are respectively connected to the common line signal control device CSE of the same opposite station exchange M (hereinafter abbreviated as opposite station M) via the jumper rack MDF to perform transmission / reception of common line signals. There is.

a1 to a4 are communication lines between the own station N and the opposite station M,
Values of CIC = 2 to 5 are given as the line numbers, respectively. The call lines a1 to a4 can be connected to the extension terminal accommodation devices 11 and 12 via the call path device NW.

The CM is a communication path control device, and controls the communication path device NW according to an instruction from the central control device CC. The extension terminal accommodating devices 11 and 12 accommodate the extension telephones X and Y, respectively, are connected to the central control device CC by a communication path q, and communicate with each other.

The station N is given a signal station code of 10.
The opposite station M is provided with a signal station code 20 and is connected to the own station N by a signal line of a common line signal system and a communication line.

Z is an extension telephone housed in the opposite station M, and the extension number is the same as that of the extension telephone Y of the own station N. That is, the extension telephone set Y is an extension telephone set simulating the extension telephone set Z of the opposite station M.

Now, it is assumed that the construction of the own station N is completed and the opposite line test of the common line is desired, but the construction of the opposite station M is not completed yet.
In this case, the own station N will perform a test by itself until the construction of the opposite station M is completed.

On the jumper rack MDF, the contractor at the own station N uses the call lines a1 and a2, the call lines a3 and a4, the common line signal control devices CSE1 and CSE.
Return 2 and return by setting jumper, and at the same time call lines a1, a2, a3, a4, common line signal controller CSE1, CSE
Separate 2 from the opposite station M.

Next, the operator of the own station N sets the changeover switch 2 during the test. The changeover switch 2 may be composed of an external electronic key device (a toggle switch or the like) and a monitoring device for notifying the switching monitoring unit 3 in the exchange of the state of the electronic key device, or 1 in the storage device unit in the exchange. It may be composed of data and an input / output device (such as a typewriter) for rewriting the data.

In such a state, the builder of the own station N dials from the extension telephone X and dials the extension telephone Z of the opposite station M to dial the extension telephone number Z of the opposite station M in order to perform a call test. To do. The call origination and dialing of the extension telephone set X are detected by the extension terminal accommodating device 11 that accommodates the extension telephone set X and sent to the central control device CC via the communication path q.

When the central control device CC analyzes the received information from the extension terminal accommodation device 11 and recognizes that it is a call request from the extension telephone set X to the opposite station M, it selects any one of the communication lines for the opposite station M. To capture.

It is now assumed that the call line a1 is captured. The central control unit CC transmits the transmission connection request to the opposite station M, and therefore transmits the transmission of the transmission connection request MSU to the opposite station M to the MSU transmission request processing unit C.

The MSU transmission request processing device C sets "1" as the transmitting station code OPC.
0 ", call station code DPC" 20 ", call line number CI
Set "2" as C in the common line significant signal unit MSU,
Further, the incoming extension number Z and a known heading code IAM (address signal) as the MSU signal type are edited in the common line significant signal unit MSU, and the common line signal control device CSE1.
To the common line significant signal unit MSU via the communication path p.

The common line significant signal unit MSU transmitted from the common line signal controller CSE1 is a jumper rack MDF and the common line signal controller CS
It is returned to E2 and received by the common line signal controller CSE2. The common line signal control device CSE2 transmits the reception notification and the reception MSE to the MSU reception processing device B in the central control device CC via the communication path p.

The MSU receiving unit 4 which has received the common line significant signal unit MSU in the MSU reception processing device B activates the switching monitoring unit 3. The change monitoring unit 3 checks the state of the changeover switch 2. Since the changeover switch 2 indicates that the test is in progress, the MSU changing unit 1 is activated.

The MSU changing unit 1 first exchanges the calling station code OPC and the called station code DPC in the received MSU. As a result, the source station code OPC becomes "20" and the destination station code DPC becomes "10", which makes it appear as if the common line significant signal unit MSU was received from the opposite station M.

Next, the MSU changing unit 1 checks the line number CIC in the received MSU. In this case, since the value of the line number CIC is "2", the MSU changing unit 1 determines that the value is an even number and adds "1" to the value of the line number CIC. As a result, the line number CIC becomes "3", and the MSU analysis unit 5 that has taken over the processing from the MSU change unit 1 calls the received common line significant signal unit MSU from the opposite station M to the extension telephone Y of the own station N. It is analyzed that it is the incoming call connection request signal using the line signal 3 (that is, a2), and the incoming processing unit E corresponding to the incoming call is activated.

The reception processing unit E activates the call control processing device D, and when the call control processing device D recognizes that the extension telephone set Y is in an idle state, it controls the speech path control device CM so that the extension telephone set Y and the ringer reverse output. The device RG, the call line a2, and the ring back tone sending device RBT are connected via the call device NW, respectively, and further, to the MSU transmission request processing device C for sending a call completion signal to the opposite station M. Request to send the call completion MSU.

The MSU transmission request processing device C edits the originating station code OPC "10", the terminating station code DPC "20", the line number CIC "3" and the known heading code ACM in the common line significant signal unit MSU, and the opposite station Request MSU transmission to any signal line for M.

Now, assuming that the common line signal control device CSE2 is selected, the common line significant signal unit MSU sent from the common line signal control device CSE2 is folded back to the common line signal control device CSE1 on the Jappa rack MDF, and the common line signal control is performed. Received at device CSE1.

The common line signal control device CSE1 transmits the reception notification and the reception MSU to the MSU reception processing device B in the central control device CC via the communication path p.

In the MSU reception processing device B, the MSU receiving unit 4 receives the common line significant signal unit MSU and activates the switching monitoring unit 3.

The changeover monitoring unit 3 checks the state of the changeover switch 2, and since the changeover switch 2 indicates that the test is in progress, the MSU changing unit 1 is activated.

First, the MSU changing unit 1 determines the originating station code OPC in the received MSU.
Replace the called station code DPC with. As a result, the source station code OPC becomes "20" and the destination station code DPC "10", and it looks as if the common line significant signal unit MSU was received from the opposite station M.

Next, the MSU changing unit 1 checks the line number CIC in the received MSU. In this case, the value of the line number CIC is "3", so the MSU change unit 1 determines that the value is an odd number, and the value of the line number CIC is "1".
Subtract.

As a result, the value of line number CIC becomes "2", and MSU change unit 1
The MSU analysis unit 5 which has inherited the processing from the common line significant signal when the received common line significant signal unit MSU is connected from the own station N to the extension telephone Z of the opposite station M using the communication line a1. This will be analyzed as a positive return signal to the unit MSU, and the reception processing unit corresponding to the positive return signal in the reception processing unit E will be activated. The reception processing unit corresponding to the positive return signal activates the call control processing device D, and the call control processing device D controls the call path control device CM to set the call path between the extension telephone X and the call line a1. NW
Form on top.

As a result, the operator of the own station N can hear the ringing tone from the extension telephone set X.

When the extension telephone set Y responds, the call control processor D controls the speech path control unit CM to form the extension telephone set Y with the speech line a2 on the speech channel unit NW, and at the same time, the MSU transmission request processing unit C. To activate the response signal MS to the opposite station M
Request to send U.

The MSU transmission request processing device C performs the same processing as described above.
Source station code OPC “10”, destination station code DPC “20”, line number CIC “3”, and heading code ANN are edited as common line significant signal unit MSU, and any one of the signal lines for opposite station M is edited. To send the common line significant signal unit MSU.

After that, the call between the extension telephone X of the own station N and the extension telephone Y of the own station N, which imitates the extension telephone Z of the opposite station M, is returned on the jumper rack MDF by the same processing as the transmission / reception of the call completion signal. You will be able to make calls through the communication lines a1 and a2.

〔The invention's effect〕

As described above, according to the present invention, in the electronic exchange equipped with the common line signaling system, the changeover switch is simply changed over without requiring any special device,
Since it is possible to perform a common line signaling connection call confirmation test only by the own station, it is possible to improve the reliability of construction work.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram of a test system in a common line signal system of the present invention. FIG. 2 is a schematic configuration diagram for explaining a test system in a common line signal system as an embodiment of the present invention. Common line signal link control device B ... MSU reception processing device C ... MSU transmission request processing device D ... Call control processing device E ... Reception processing unit 1 ... MSU changing unit 2 ... Changeover switch 3 ... Switching monitoring Part 4 …… MSU receiving part 5 …… MSU analysis part N …… Own local exchange M …… Opposite local exchange CC …… Central control unit CM …… Call path control device NW …… Call path device CSE1, CSE2 …… Common Line signal control device a1 to a4 ...... Call line 11,12 ...... Extension terminal accommodation device X, Y, Z ...... Extension telephone p, q ...... Communication path RG ...... Ringer transmission device RBT ...... Ring tone transmission device MDF …… Jumper rack CIC …… Call line number

Claims (1)

(57) [Claims] 1. A common line significant signal unit from a common signal line.
In the common line signaling electronic exchange that performs call control processing according to the MSU, the receiving station code DPC and the originating station code OPC in the receiving MSU are exchanged, and when the line number CIC is odd, subtract 1 from this and when it is even Determines the MSU change unit that adds 1 to this and the MSU that activates the reception processing unit by deciding the reception processing unit that performs processing corresponding to the information according to various information in the reception MSU.
An analysis unit, a changeover switch that can be set between the test state and the operation state of the electronic exchange, and a receiving MSU when the changeover switch is in the operation state
To the MSU analysis unit as it is, and when the changeover switch is in the test state, the received MSU is passed through the MSU changing unit to the MS
It is equipped with a switching monitoring unit that sends to the U analysis unit, loops back two common line signal link controllers for the same opposite station, and uses the two lines to transmit and receive MSUs. Numerical value> Even value The two call lines to the same opposite station are folded back, and the call control is performed according to the processing result in the reception processing section to perform the common line signaling connection call test by itself. A test method in the common line signaling method characterized by.