JPH09130480A - Failure report of communication cable for electronic exchange Torquay service method and cutting piece of test ammunition for the exchange - Google Patents

Abstract

(57) [PROBLEMS] To provide a communication cable fault notification talkie service system that can be easily applied to a digital electronic exchange, and a test piece cutting piece that is a main tool of the system. SOLUTION: In a digital electronic exchange that accommodates a communication cable via an MDF, a test ammunition of the MDF is tested with the communication cable side terminals opened and a diode inserted and connected between the terminals of the exchange side wiring. The cutting piece for ammunition is prepared to be inserted, and when the cutting piece for test ammunition is inserted into the test ammunition in the above-mentioned state, the directionality of the diode between the terminals of the exchange side wiring is utilized. The insertion state is detected, and when the insertion state is detected, when there is an incoming call between the terminals of the exchange side wiring in the insertion state, it is detected that the line connected to the terminal is a failure, the predetermined failure notification from Torquay device is configured to transmit the calling subscriber of the incoming call.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a notification processing service of an exchange station when a failure occurs in a communication cable accommodated in the exchange station, and further relates to a test ammunition cutting piece which is a main tool for the countermeasure. It is a thing.

[0002]

2. Description of the Related Art When a failure occurs in a communication line using a communication cable, in order to identify the failure point, a cutting piece is inserted into a test ammunition unit of an MDF in an exchange station accommodating the communication cable. The communication cable side and the internal wiring side are separated from each other. As the cut piece in this case, a cut piece simply made of an insulator is used.

[0003]

When the communication cable is thus broken and the communication cable side and the in-office wiring side are separated from each other, the subscriber connected to the communication cable in which the failure has occurred When there is an incoming call
The caller of the other party of the incoming call is required to have a service for reporting failure information such as "information regarding the state in which the called subscriber cannot be connected due to a failure of the communication cable and the prospect of recovery". In such a case, the conventional X
In a space-dispersion type exchange such as B, an antenna is arranged on the back side of a test bullet, etc. and an announcement device is connected to this antenna, and the failure information as described above is transmitted from the announcement device as a talkie service, There is an example in which a configuration is used in which an induction distributor is arranged to receive the talkie service. However, this configuration utilizes the fact that the solid line conductors are individually arranged in the exchanges for each line, and therefore cannot be applied to the digital electronic exchanges, which have recently become popular rapidly.

A first object of the present invention is to provide a fault notification talkie service system for communication cables, which can be easily applied to a digital electronic exchange. Second of the present invention
It is an object of the present invention to provide a cutting piece for a test ammunition, which is the main tool of such a communication cable fault notification talkie service system.

[0005]

In order to achieve this first object, a fault notification talkie service system for a communication cable for an electronic exchange according to the present invention is a digital electronic exchange that accommodates a communication cable via an MDF. The test ammunition of the MDF is prepared so that the communication ambulance side terminals are opened and the test ammunition cutting piece is inserted in a state where the diode is inserted and connected between the terminals of the exchange side wiring,
When the cutting piece for a test ammunition is inserted into the test ammunition in the above state, the insertion state is detected by utilizing the directionality of the diode between the terminals of the exchange side wiring, and the insertion state is detected. When a call is received between the terminals of the exchange side wiring in the inserted state, it is detected that the line connected to the terminal has a failure, and a predetermined failure notification is issued from the talkie device. It has a configuration characterized by transmitting it to a subscriber. Furthermore, this second
In order to achieve the above object, during disconnection of the test ammunition for an electronic exchange according to the present invention, between the terminals on the side of the communication cable with respect to the test ammunition of the MDF for accommodating the communication cable in the digital exchange. It has a configuration prepared so that it is opened and inserted in a state in which a diode is inserted and connected between the terminals on the exchange side.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION With respect to a test ammunition of MDF for accommodating a communication cable in a digital exchange, the terminals on the side of the communication cable are opened and a diode is inserted and connected between the terminals on the side of the exchange. A cutting piece according to the invention is provided for insertion into a state. When the test ammunition cutting piece is inserted into the test ammunition of the MDF with the communication cable side terminals opened and the diode is inserted and connected between the terminals of the exchange side wiring, between the terminals of the exchange side wiring The insertion state is detected by utilizing the directionality of the diode, and when the insertion state is detected, the line connected to the terminal when there is an incoming call between the terminals of the exchange side wiring in the insertion state. Is detected as a fault, and a predetermined fault notification can be transmitted from the talkie device to the incoming call subscriber.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of an MDF test ammunition used for pulling a cable into an exchange when the present invention is carried out, and (a) shows a surface of a test ammunition 4 for 10 lines. In this figure, a pair of upper and lower portions indicated by A and B from the left side indicates 1, 2, ... (B) is test bullet 4
The inner contact springs 1a, 2a, 1b, 2b are shown. In this example, each contact pair A, located in the upper and lower rows,
In B, the upper contact springs 1a and 1b are inside the station, and the lower contact springs 2a and 2b are on the line side. These contact spring pairs A and B shown in (b) are provided in (b) inside the respective jack holes 3a and 3b of the test ammunition 4 shown in (a).
The contact portion at the left end of is located near the openings in the jack holes 3a and 3b and arranged so as to be perpendicular to the paper surface.
Further, the upper contact pair A is normally connected to the ground (G) and the lower contact pair B is connected to the electric potential of the battery (-48V).

FIG. 2 (a) is an external perspective view of a cutting piece 5 of the present invention that is inserted into the test ammunition unit 4 of FIG. 1, and FIG. 2 (b) shows the interior along the 2B-2B plane of FIG. Structural drawing, (c) is an internal structural drawing along 2C-2C of (a), (d) is (c)
FIG. 2D is an internal structural view taken along the 2D-2D plane of FIG.

In FIG. 2, 6 is a terminal of the cutting piece 5, and a pair of terminals facing each other like 6-1 and 6-2 is used for one line. As shown in (a) and (b), the conductor piece 8 is provided on one side of the printed board 9 of the insulator whose tip is divided for each terminal.
Is attached. A spacer 7 is provided between the two printed boards 9 and the diode 1 is provided between the conductor pieces 8.
0 is connected. A case 11 for accommodating each of these members is provided.

The terminals (6-1, 6-2) of the cutting piece 5 in FIG.
1 is inserted into the jack holes 3a, 3b of the test ammunition 4 of FIG. 1 by connecting the cutting piece 5 and the test ammunition 4 to between the contact point inner contact springs 1a, 1b shown in FIG. 1 (b). The diode 10 is connected through the conductor piece 8. On the other hand, the line side contact springs 2a and 2b contact the right side surface of the terminal pair 6-1 and 6-2 without the conductor piece 8 shown in FIG. 2C, and therefore the contact springs 2a and 2b are left open. Becomes

Next, an embodiment of the fault notification talkie service system of the communication cable for a digital electronic exchange according to the present invention using the cut piece 5 of the test ammunition will be described. FIG. 3 is a block diagram showing an outline of a line concentrator of the electronic exchange. The concentrator is a device that converts an analog signal from each subscriber line into a digital signal, performs time-division concentrating, and then connects it to a distribution stage speech path device. The digital exchange is provided with a subscriber circuit that integrates the trunk functions of the analog exchange. The signals from the subscriber circuits are multiplexed, and after the line-sharing switches of the line concentrators perform time-division concentrating and exchanges according to the traffic volume from the subscribers, they are connected to the distribution stage channel devices. The line concentrator is provided with functions for time-division line concentrating voice signals obtained by converting analog signals into digital signals, accumulating monitoring signals and control signals, and generating and distributing clocks.

FIG. 4 is a block diagram showing an example of peripheral equipment of the line concentrator LCNE. Telephones of general, public, and shared are drawn into the MDF of the exchange by subscriber lines.
From the MDF via the subscriber line interface device SLIE to the line concentrator LCNE. The line concentrator LCNE is connected to the channel rack SWF and the monitoring test rack STF, and is also connected to an aggregator (STTF / STM) including a talkie device that supplies talkie service information in the event of a failure. ing.

FIGS. 5 and 6 are operation flows for explaining the operation at the time of an incoming call in the method of the present invention. M shown in FIG.
In the DF, the line "1" of the test ammunition 4 shown in FIG.
A case where a failure occurs in "10" will be described as an example.
In this case, it has been pulled into the test ammunition 4 of FIG.
Since it is customary that all 0 pairs of line-side cables are faulty, the cutting piece 5 shown in FIG. 2 should be inserted into the jack holes 3a and 3b of the test ammunition 4 so that the cutting piece 5 can be inserted. 5 and the test ammunition 4, the line side contact springs 2a, 2b of the test ammunition 4 are all station inner contact springs 1a,
The diode 10 is disconnected from the contact point 1b and is connected between the contact point inner contact springs 1a and 1b of the contact point pair A and B. S _{1 in} FIG. 5 shows this state, in which a voltage of 48 V is applied between the contact pairs, but the current is off.

When an incoming call is received in this state (S ₂ ), the power-down is released (S ₃ ) in the normal procedure, the path connection is completed (S ₄ ), the codec loopback test (S ₅ ), and when the test is OK ( S _6), after the processing of the local station call (S _7),
The control signal (SD pattern information) is inspected. In the inspection of the LTC of SD bit number 24 in the SD pattern information, the logical O: LT pull-in is turned off (S ₈ ), and the CTT of the next SD bit number 25 is also turned off the logical O: CODEC loopback test (S ₉ ). in pre-trip test (S _10), S ₁
The polarity of the applied voltage of −48V and G described in 1 above is inverted. As a result, the terminal A side of the pair pair A and B is high and the B side is low, so that a direct current flows between A and B. In this state, the process goes to the inspection of the signal TSCN of the upward highway (FHW) (S ₁₁ ), and the “off hook” is detected by turning on the current between the A and B.

As shown in (c) below, the flow shifts to the flow of FIG. 6 in which the LTC inspection (S ₁₂ ) is off, and the subscriber side is disconnected (P ₀ = off) (S ₁₃ ). The −B current becomes “off”, and then a voltage (−48 V) is applied between A and B with the same normal polarity indicated by S ₁ , and the signal TS is restored again.
The CN is inspected (S ₁₅ ). At this time, since the current between A-B is off, is "on-hook", the state as the "line fault detection" (S _16).

By the above operation, the inserted state of the diode is detected by utilizing the directivity of the diode 10 inserted between the contact pair A and B. As a result, the exchange normally notifies the caller of the busy signal, but by inserting a command into the exchange, it becomes possible to switch to the talkie supplied from the aggregation device STTF / STM, so that the cutting piece 5 is inserted. In carrying out the present invention, if the latest fault information is recorded in the talkie device of the aggregation device, the fault information can be transmitted to the subscriber who needs to transmit the fault information with minimum labor cost. Stable and reliable execution is possible.

[0017]

As described in detail above, according to the present invention, the cutting piece 5 shown in FIG. 2 is simply inserted and coupled to the test ammunition unit shown in FIG. According to the inspection / control procedure for a normal incoming call in the electronic exchange, the necessary failure information can be surely transmitted to the calling subscriber of the incoming call to the line using the failed cable. Therefore, the practical effect obtained from the operation management side of the communication network in which the electronic exchange is connected via the cable is extremely large.

[Brief description of the drawings]

FIG. 1 is a surface view (a) of a test cartridge for an MDF used for implementing the present invention and a schematic cross-sectional view (b) showing an internal contact structure.

FIG. 2 is a perspective view (a) and schematic cross-sectional views (b) (c) (d) showing a structural example of a cut piece of a test bullet according to the present invention.

FIG. 3 is a block diagram showing a structural example of an electronic exchange to which the present invention is applied.

FIG. 4 is a block diagram showing a structural example of an electronic exchange to which the present invention is applied.

FIG. 5 is an operation flow for explaining the operation of the method of the present invention.

FIG. 6 is an operation flow for explaining the operation of the method of the present invention.

[Explanation of symbols]

 1a, 1b, 2a, 2b Contact splashes 3a, 3b Jack hole 4 Test bullet 5 Cut piece 6 Terminal of cut piece 5 6-1, 6-2 Terminal pair 7 Spacer 8 Conductor piece 9 Printed board 10 Diode 11 Case MDF Main wiring board SLIE Subscriber line interface device LCNE Concentration line device FFTU rack Fuse terminal SWF Communication line device rack STF Monitoring test rack SSF Monitoring supply rack MISCF Miscellaneous device rack

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Michiyama Mori 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation

Claims (2)

[Claims] 1. A digital electronic exchange that accommodates a communication cable through an MDF, wherein the test ammunition of the MDF is opened with the communication cable side terminals open and the diode is inserted and connected between the exchange side wiring terminals. The cutting piece for test ammunition is prepared so as to be inserted, and when the cutting piece for test ammunition is inserted into the test ammunition in the above-mentioned state, the directionality of the diode between the terminals of the exchange side wiring is utilized. The insertion state is detected, and when the insertion state is detected, when there is an incoming call between the terminals of the exchange side wiring in the insertion state, it is detected that the line connected to the terminal has a failure. , A fault notification talkie service system for a communication cable for an electronic exchange, characterized in that a predetermined fault report is transmitted from a talkie device to a calling subscriber of the incoming call. 2. A test ammunition for an MDF for accommodating a communication cable in a digital exchange, wherein the terminals on the communication cable side are opened and a diode is inserted and connected between the terminals on the exchange side. A cut piece of test ammunition for an electronic exchange that is prepared to be inserted.