JPH07221839A - Device for verifying connection route of automatic mdf - Google Patents

Abstract

PURPOSE:To enhance the job efficiency by executing simultaneously the input of connection position designation information for jumpering between a subscriber line and an exchange and the verification of a state of connected wiring in the case of path connection. CONSTITUTION:An existing MDF 3 and a new automatic MDF 6 are connected in duplicate, a test use terminal equipment 8 is connected to the automatic MDF 6, and relays T1b-Tnb making dial connection to an exchange via the existing MDF 3 and relays T1a Tna making dial connection to the exchange via the new automatic MDF 6 are provided in the automatic MDF 6, after a test trunk device is connected to the exchange, when the connection position designation information is executed at path connection, one of the relays T1 a-Tna is operated to form a connection route from one of existing subscriber lines 2-1-2-n to an existing subscriber circuit in the existing exchange via the new automatic MDF, dial information dialed synchronously with the connection position designation is led to the test trunk device via the connection route and the test trunk device sends an acknowledge signal when the connection is normal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the MDF of an existing exchange.
The present invention relates to a connection route verification device for an automatic MDF, which performs a verification work of a new connection route formed by a connection work in the automatic MDF, which is one of the preparatory works for substituting a new automatic MDF.

[0002]

2. Description of the Related Art An existing MDF of an exchange being serviced (generally, a manual MDF for manually jumper between a subscriber line side terminal board and a subscriber circuit side terminal board of the exchange).
In order to minimize the service interruption time to subscribers and to facilitate the accommodation replacement work to the new automatic MDF, The work of connecting the subscriber line accommodated in the existing MDF side to the new automatic MDF side in advance and temporarily making a double connection, and the subscriber data of the corresponding subscriber circuit (SLIC) are newly added. Preparatory work such as work for inputting to the automatic MDF is performed. Then, after the preparatory work is completed, the accommodation replacement work is performed, the existing MDF is removed, and thereafter, the operation of the new automatic MDF is started.

In connection work with the above automatic MDF,
It is necessary to verify the connection state of the connection route formed by the connection work. The verification work is, for example,
As shown in FIG. 5, the subscriber telephones 51-1 to 51-n are connected to the subscriber circuits 55-1 to 55-n of the exchange 54 via the subscriber lines 52-1 to 52-n and the MDF 53, respectively. When replacing the manual MDF 53 used in the system with an automatic MDF, the following is done.

[0004] For example, in the case of manual work, a connection confirmation state of a connection to a new automatic MDF is confirmed by using a continuity confirmation buzzer or the like, and it is confirmed that all are normally arranged.
Since this work requires a large amount of work, it usually requires the work of a plurality of people, resulting in poor work efficiency. Further, a tester for confirming the connection wiring having a transmitter / receiver of an AC signal of 1 KHz may be used, but this tester does not have an interface for connecting to the control unit of the automatic MDF.

[0005]

When the above-mentioned conventional tester is used, wiring for the tester is connected to the ammunition of the termination part composed of the subscriber line termination terminal, the arrester, the ammunition, etc. Preliminary work for connecting manually is required, and since the verification work of the connection route must be performed separately from the connection position specifying work at the time of path connection of the new automatic MDF, there is a large amount of work and the construction period is shortened. It is difficult to meet the demand for work efficiency reduction such as reduction of work man-hours and automation at night.

According to the present invention, work efficiency is improved by simultaneously inputting jumper ring connection position designation information between the subscriber line side and the exchange side and verifying the connection wiring state of the path connected thereby. It is an object of the present invention to provide an automatic MDF connection route verification device that is obtained.

[0007]

To this end, the present invention relates to the above-mentioned existing subscriber line via a new automatic MDF, which is formed by connection work when replacing the MDF of an existing exchange with a new automatic MDF. In an automatic MDF connection route verification device for verifying the connection state of a connection route to an existing subscriber circuit in an exchange, for making an outgoing connection to the exchange through the existing MDF on the subscriber line side of the new automatic MDF. A first switching circuit and a second switching circuit for connecting to the originating position of the exchange through a new automatic MDF are provided, and a test trunk device having a confirmation signal transmitting function is connected to the exchange. And has a function of transmitting to the exchange, a function of transmitting dial information, a function of receiving the confirmation signal, and a function of interfacing with a new automatic MDF,
A test terminal device for verifying the connection route is connected to the new automatic MDF based on the confirmation signal and the information regarding the accommodation connection state of the subscriber line, and the test terminal device is connected to the new automatic MDF at the time of path connection. It is characterized in that the connection state of the connection route after accommodating the new automatic MDF is verified in synchronization with the input of the connection position designation information and the path connection.

[0008]

According to the present invention, when verifying the connection state of the connection route from the existing subscriber line to the existing subscriber circuit in the existing exchange through the new automatic MDF after the accommodation change to the new automatic MDF. , The new automatic MDF is activated after the first switching circuit operates and is connected to the test trunk device.
When the work for inputting the connection position designation information at the time of the path connection to the path is carried out, the second switching circuit operates in response to the command from the test terminal device, and the existing subscriber line goes through the new automatic MDF to the existing exchange. A connection route to the existing subscriber circuit is configured, and dial information issued in synchronization with the connection position designation information is guided to the test trunk device via the connection route. At this time, in the normal connection state, the confirmation signal is transmitted from the test trunk device to the test terminal device through the same connection route. Therefore, based on the confirmation signal and the information regarding the connection state of the accommodated subscriber line, You can verify that the connection route is in a normal connection state,
It is possible to greatly improve the work efficiency by simplifying the connection route verification work and its preparation work.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a diagram showing a configuration of a system to which a connection route verification device for an automatic MDF according to a first embodiment of the present invention is applied. This FIG. 1 shows the connection state of each component when the MDF is double installed in the replacement work to the new automatic MDF, and at this time, the jumper ring to the new automatic MDF is in a non-implemented state. There is.

In FIG. 1, before replacement work, the subscriber telephone sets 1-1 to 1-n already have the existing subscriber line 2-.
1-2-n, each is connected to the subscriber circuits 5-1 to 5-n of the existing exchange 4 via the existing manual MDF 3, and the exchange 4 is also connected to other exchanges to provide an exchange service. is doing. In order to replace the manual MDF 3 of this system, a new automatic MDF 6 is installed, and the switching circuit for realizing the present invention has an existing subscriber as shown in FIG. 2 which is a detailed view of the A section of the new automatic MDF 6 of FIG. Lines 2-1 to 2-n
And to the existing MDF3.

Before the existing MDF3, subscriber lines 2-1 to 2-that are dually connected to the existing subscriber lines 2-1 to 2-n.
Each n is drawn into the new automatic MDF 6 as shown in FIG. 2 and, for example, through a contact such as a two-contact transfer type relay T1a, T1b to Tna, Tnb provided in the same number as the number of lines, for example, a primary switch. 7a, a test terminal device (TTRM) provided outside the new automatic MDF 6 via contacts such as relays T1a, T1b to Tna, Tnb, while being connected to a primary switch 7a which is a two-stage switch including a secondary switch 7b. ) 8 and the new automatic MDF 6 is provided with a control device 9 connected to the public network. Needless to say, the wirings from the new automatic MDF 6 are double-connected to the wirings between the existing MDF 3 and the exchange 4, respectively, as shown in FIG.

The connection to the relay will be described in more detail with reference to FIG. 3, which is a detailed view of a portion B of FIG. Each subscriber line 2-1 to 2-n is composed of L1 and L2 lines,
The L1 line is connected to the primary switch 7a via a contact that conducts when the relays T1a-1 and T1b-1 are not energized, and the TTRM8 via a contact that conducts when the relay T1a-1 or T1b-1 is energized. Terminals L1A, L
1B is connected to each. Similarly, line L2 is relay T1
a-2 and T1b-2 are connected to the primary switch 7a through a contact that conducts when they are not excited, and the relay T
The terminals L2A and L2B of the test terminal device 8 are respectively connected via contacts that conduct when 1a-2 or T1b-2 is excited. In the same manner, the contact points of each relay are TT
Multiple connections are made to the terminals L1A, L2A, L1B, L2B of the RM8.

In the above structure, only the relay corresponding to one subscriber line among the relays is operated by the control command from the control unit 9, so that, for example, the relay T1b is used.
-1, T1b-2 are excited, and in that case, TT
The L1A and L2A of the RM8 are connected to the existing subscriber line 1-1, and the mode for verifying the connection route through the existing MDF3 is entered. Therefore, the relay T1b- on the primary switch side
1 and T1b-2 function as a first switching circuit for making outgoing connection to the existing exchange through the existing MDF. Similarly, when the relays T1a-1 and T1a-2 are excited, T
The L1B and L2B of the TRM8 are connected to the new automatic MDF 6 and the mode for verifying the connection route passing through the new automatic MDF 6 is entered. Therefore, the relays T1a-1 and T1a-2 use the new automatic MDF to set the transmission position of the existing exchange. And functions as a second switching circuit for connecting to.

Basically, one TTRM 8 is used for each automatic MDF, but a plurality of TTRMs 8 may be installed to separately install the switching circuits to further improve the efficiency. The TTRM 8 is a function of interfacing with the new automatic MDF 6, a function of confirming use / non-use of the subscriber line to be tested, a calling function of making a call to the exchange 4 and transmitting dial information, and a test trunk device (TTR) described later.
K) confirmation signal (special signal) transmitted from 10 and L
2, L1 line inversion signal reception function, L2, L1 line polarity check function, call termination disconnection function, busy tone (BT)
Signal receiving function, new automatic MDF controller (CON
T) It has a control function that controls each of the above functions including the command from 9. The TTRM8 may be built into the new automatic MD6F, but after the replacement work is completed, the TTRM
Since it is not economical because it is not used, it is externally attached in this embodiment.

The test trunk device (TTRK) 10 is
It is installed externally on the exchange 4, and as shown in FIG.
Is connected to a predetermined position (a position where a normal talkie service is performed), but when a digital exchange is used, it may be built in the exchange main body. Also, TTRM8
The same number (a plurality of units) may be provided to improve efficiency, and in that case, the connection number can be one. The TTRK 10 has an interface function with the exchange 4, a function of transmitting a signal indicating a special signal indicating that it is a TTRK (a different number is used when a plurality of units are installed) as a confirmation signal, and an incoming call (connection) free function (this Function may be provided on the exchange side), L2, L1 line inversion function,
On the calling side, the function of holding the call path even if the L2 and L1 lines are temporarily disconnected, such as when a hooking signal is input (or the function of holding the call path until a special signal arrives from the TTRM side), It has a function of transmitting the polarity check signal of the L2 and L1 lines.

Next, the connection route verification at the time of replacing the manual MDF with the automatic MDF according to this embodiment will be described. First, in the double connection state of FIG. 1, the CONT 9 is operated to connect the subscriber line (2-1 to 2-1) of the connection route verification target.
Any one of 2-n; for example, the relay (relay T1b-1, T1b-2) corresponding to the subscriber line 2-1) is operated to check whether the subscriber line is busy. Here, when busy, the connection route verification relating to the subscriber line is temporarily stopped, or the process of storing the fact that the subscriber line is busy and skipping the connection route verification is performed, and the processing is performed as such. To CONT9.

If it is confirmed by the above-mentioned check that the telephone is not busy, the call is sent to the exchange 4 via the existing MDF 3 and the dial information for connecting to the TTRK 10 is transmitted. Depending on this dial information, TTRK10
When the connection to is made free of charge, a special signal is returned from the TTRK10. By receiving this special signal, it is possible to confirm that the TTRK10 has been connected. Next, the TTRM8 receives the polarity check signal of the L2 and L1 lines transmitted from the TTRK10, confirms whether the construction wiring on the subscriber line side is wrong, and notifies the CONT 9 of the confirmation result. deep.

Next, the CONT 9 performs a jumper operation to specify the connection position on the new automatic MDF of the subscriber line 2-1 whose connection route is to be verified, and the connection positions of the primary switch and the secondary switch are automatically determined. To be decided.
After the jumper ringing is completed, the relays T1b-1 and T1b-2 of the subscriber line 2-1 to be verified for the connection route are restored (released), and then the relays T1a-1 and T1a.
-2 is operated. As a result, the TTRM 8 and the TTRK 10 are temporarily disconnected, but the call path holding function of the TTRK 10 holds the call path at that time.

In this embodiment, when the pre-connection work is completed, the accommodation position of the subscriber line in the existing MDF,
A database (for example, managed by the station) that holds management data related to the connection status of the accommodated subscriber line, such as the accommodation position on the exchange, the connection data when connecting the subscriber line and the subscriber circuit, etc. Since the data is to be accessed via the public network and kept in a state where it is fetched, the data and the connection position designation data input at the time of jumper are used to connect the existing subscriber line through the new MDF to the existing exchange. It is possible to automatically verify, by the TTRM8, the connection route that has been constructed and connected up to the subscriber circuit.

Therefore, in accordance with the above relay operation, TTRM
In the state where the connection route is changed so that 8 is connected to the TTRK 10 via the contacts of the relays T1a-1 and T1a-2 of the new automatic MDF, the primary switch, the secondary switch and the exchange 4, jumpering operation and connection are performed. If the construction is correct, the TTRK10 will send a special signal and the L2 and L1 line polarity check signals, so the normality can be confirmed (Note that if the connection is not correct, the special signal will not be sent, so it is an erroneous connection. I understand).

After confirming the normality, the TTRM 8 performs a disconnecting operation, and a loop disconnection is made to the L2 and L1 line inverting device by, for example, diode cutting. Thereby TTRK1
When 0 is disconnected, a BT signal is transmitted through the subscriber circuit. Therefore, after confirming that, the BT receiving circuit (not shown) is disconnected and the L2 and L1 lines are disconnected. The CONT 9 is notified that the series of normality confirmations on the line 1-1 has been completed. CONT9
Upon receiving this notification, the relays T1a-1 and T1a-2 are restored, and then the process shifts to the test of the subscriber line 1-2 which is the next connection route verification target.

In this way, the above is repeated until the test is completed for all subscriber lines subject to connection route verification. After the test is completed, as shown in FIG. 4, until the existing MDF is removed and the system shifts to a system that operates only with the new automatic MDF, the connection state is established via both MDFs.

The first embodiment has the following operational effects. First, since the work of verifying the connection wiring state is performed at the same time as the work of specifying the connection positions of the jumper rings on the subscriber line side and the exchange side, the work amount is greatly reduced. Second
In addition, since the interface with the TTRM is provided in the new automatic MDF, preparatory work for verification work is reduced, and after the construction is completed, retests and disconnection tests on the subscriber line side and the exchange side can be performed. It will be possible. Third
Further, since the route passing through the existing MDF and the route passing through the new automatic MDF can be easily switched by the first and second switching circuits, the wiring for the test machine is manually connected to the ammunition. No need for preliminary work. Fourth, since the management data of the existing MDF is fetched and used for changing the connection route, the work of data creation and input by the operator can be greatly reduced. Fifth
In addition, when a call is made or a call is received by the subscriber during the test, the test is temporarily suspended, so that the test at night can be performed.

[0024]

As described above, according to the present invention, the connection route from the existing subscriber line to the existing subscriber circuit in the existing exchange via the new automatic MDF is connected to the new automatic MDF after accommodation. When verifying the state, if the connection position designation information input operation is performed at the time of connecting the path to the new automatic MDF after the first switching circuit operates and is connected to the test trunk device, The second switching circuit operates in response to a command from the test terminal device, and a connection route from the existing subscriber line to the existing subscriber circuit in the existing exchange through the new automatic MDF is constructed. Via this, the dial information issued in synchronization with the connection position designation information is guided to the test trunk device. At this time, in the normal connection state, the confirmation signal is transmitted from the test trunk device to the test terminal device through the same connection route.
It is possible to verify that the connection route is in the normal connection state based on the confirmation signal and the information about the connection state of the accommodated subscriber line, simplifying the connection route verification work and preparatory work, and greatly improving work efficiency. Can be improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a system to which a connection route verification device for an automatic MDF according to a first embodiment of the present invention is applied.

FIG. 2 is a detailed view of part A of FIG.

FIG. 3 is a detailed view of a B part in FIG.

FIG. 4 is a diagram showing a state in which the existing MDF is removed after the replacement work is completed.

FIG. 5 is a diagram illustrating a system using an existing manual MDF.

[Explanation of symbols]

 1-1 to 1-n subscriber telephone set 2-1 to 2-n subscriber line 3 existing MDF 4 existing switch 5-1 to 5-n subscriber circuit 6 new automatic MDF 7a primary switch 7b secondary switch 8 Test terminal device (TTRM) 9 New automatic MDF control device (CONT) 10 Test trunk device (TTRK)

Claims (1)

[Claims] 1. An MDF of an existing exchange is changed to a new automatic MD.
An automatic MDF connection route verification device for verifying a connection state of a connection route from an existing subscriber line through a new automatic MDF to an existing subscriber circuit in the exchange, which is formed by a connection work when replacing with F, On the subscriber line side of the new automatic MDF, a first switching circuit for making outgoing connection to the exchange through the existing MDF and a second switching circuit for connecting to the outgoing position of the exchange through the new automatic MDF. A switching circuit is provided, and a test trunk device having a function of transmitting a confirmation signal is connected to the exchange, and a function of transmitting to the exchange, a function of transmitting dial information, a function of receiving the confirmation signal, and a new automatic MDF are provided. A test terminal device having an interface function for verifying the connection route on the basis of the confirmation signal and information regarding the accommodation connection state of the subscriber line. Connect to regulations automatic MDF, the test terminals, in synchronization with the input and the path connection path connection at the connection position designation information to the new automatic MDF,
An automatic MD, characterized in that the connection state of the connection route after the accommodation is changed to a new automatic MDF is verified.
F connection route verification device.