JPS5819197B2 - Connection method for representative subscriber line lockout - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for selecting an incoming terminal in a telephone exchange when one terminal of a representative subscriber is line-locked out.

FIG. 1 shows an example of the configuration of a switching system using the conventional trunk memory system. As an example, n telephone metering devices n of one representative subscriber SUB are connected to the subscriber side of a communication path switch SW via a line circuit LR. Similarly, m trunks TRK1 to TRKm
is connected to the trunk line side.

Driving control, that is, connection control of the communication path switch SW is performed by the marker MKR, and translation information obtained by translating the subscriber number from the number group NG or representative subscriber selection information is input to the marker MKH as information necessary for control.

The ``idle'' or ``busy'' status of the telephone receiving the incoming call is tested by marker MKR through channel switch SW.

Trunk memory TRKI! VIEN is trunk TRK1
- It stores the "vacant or 6 busy" information input from TRKm and the driving information of the call path switch SW input from marker MKR, that is, the translation information corresponding to the trunk number. Necessary information is output to number group NG.

The result of the busy test mentioned above is represented by 5, the translation information corresponding to the trunk number is represented by 6, and each trunk's ``empty''
Or "busy" information is represented by 7.

Also, arrows indicate the flow of information.

Next, the operation of representative subscriber selection will be described.

If there is an incoming call to the representative subscriber SUB via one trunk TRK, the marker MKR activates the number group NG with the trunk number and called number information as route 1,
Request the translation information of the vacant telephone of the representative subscriber SUB.

By the way, since the "vacant" or 6-busy information of trunks TRK1 to TRKm is stored in the trunk memory TRKMEM in correspondence with the telephone number and telephone number information, the number group NG corresponds to the stored representative subscriber. Trunk memo IJTRK of busy information of SUB telephone
The information is inputted from the MEM through route 2, one free telephone is selected from among them, translated, and the translated information is passed to the marker MKH through route 3.

The marker MKR controls the connection of the communication path switch SW using four routes based on this translated information.

The conventional trunk memory method is trunk memory IJTRKM.
Since representative selection is performed based on EM information, it requires less electrical memory compared to other methods, such as connecting the C line from each representative subscriber's telephone terminal with a jumper and selecting an available telephone depending on the presence or absence of the C line. This method allows for writing, and eliminates the need for complicated jumper work.

By the way, in the example shown in Figure 1, if the telephone of the representative subscriber who received the call is disconnected from the receiver, the line circuit LR is installed so that the telephone does not disable the register or other equipment.
The line is disconnected from the communication path switch SW, resulting in line lockout.

This line lockout phone has trunk memory TR.
Since the call is not recorded as "busy" in KMEM, it may be selected as "idle" in the number group NG when an incoming call is received.

Marker MKR starts a connection operation to this line-locked telephone, but learns from the busy test operation of the telephone that it is in line lockout, and stores the telephone's "busy" state in the trunk memory TRKMEM. 6. However, after the locked-out telephone is stored in the trunk memory TRKMEM as '1 call in progress', if the handset is hooked on and the lockout is released, the line circuit will be restored. The release information is not immediately transmitted to the trunk memo IJTRKMEM, but in order to convey this information, the marker MKR is used to occasionally test the locked-out subscriber while it is busy via the channel switch SW to monitor the release of the lockout, and then the trunk memo IJTRKMEM is sent to the trunk memo IJTRKMEM. It is necessary to modify it according to the test.

According to this conventional method, when a large number of subscriber lockouts occur, the number of operations of marker M'KR becomes extremely large, which significantly reduces the processing capacity of marker MKR and interferes with normal processing. There was a risk.

The present invention takes advantage of the characteristics of the representative selection using the trunk memory method described above, and takes into consideration the problem of line lockout processing, which has been a drawback thereof, so as not to increase the load on the common control equipment.

That is, the present invention provides a subscriber circuit having a line lockout function that separates the exchange communication path from the subscriber line when the subscriber line is held inactive for a long period of time, a connection control device that performs connection control, and an exchange of connection information. In a telephone exchange, the connection control device inputs each information of the translation device and the storage device, and performs connection control based on the input information. , when an incoming call is made to a representative subscriber and the incoming call terminal is in line lockout, the connection control device adds information necessary for retranslation such as translation information of the line lockout call and sends the translation device again. This connection method for representative line lockout is characterized by activating the translation device and storage device, inputting each information of the translation device and storage device, and allowing the call to arrive at another terminal of the representative subscriber.

The present invention will be explained in detail below.

FIG. 2 is a circuit diagram showing an example of the configuration of an exchange for explaining the present invention, in which the functions of the marker MKR and the number group NG have been changed or modified compared to the conventional trunk memory system.

In other words, between marker MKR and number group NG,
In addition to the conventional route 1 for trunk number and called number information and route 3 for translation information, route 8 for lockout information from marker MKR to number group NG when a call arrives at a lockout telephone is added, and the signal transmission and reception etc. Logic circuits, storage circuits, etc. necessary for marker MKRJ and number group NG are required.

The other parts are as before connected to the telephone line switch SW of the representative subscriber SUB through the line circuit LR, the trunks TRK1 to TRKm1, and the marker MKR, and the information lead for the trunks TRK1 to TRKm. is connected to markers M and KR via trunk memo IJTRKMEM and number group NG.

Next, the operation will be explained.

First, marker MKR accepts an incoming call to representative subscriber SUB, activates number group NG, sends the trunk number and called number via route 1, and sends trunk memo IJTRK.
The busy information of the telephone of the representative subscriber SUB stored in the MEM is input to the number group NG via route 2, representative selection and translation operations are performed, and the operation results are sent to the number group NG as translated information via route 3. The reception is taken as
The switch performs a driving operation, that is, a connecting operation.

Assuming that the phone selected here is a power out, the marker MKR will activate the number group NG again via route 8, send the same trunk number and called number as before to the number group NG, and send the translated information of the lockout phone. (translation information received through route 3 above) is sent back.

Number group NG is here 1-rank memory TRK
MEM is referred to again and new translation information is sent to marker MKH via route 3.

Marker MKR receives the new translation information and performs a switch driving operation.

By controlling as described above, marker MKR can be selected even if the representative subscriber's telephone is locked out.

Further, the number of operations of the marker MKH increases only once when a lockout telephone is selected, and the increase in the number of operations is small.

Therefore, the drawbacks of the conventional trunk memory method can be overcome.

As described above, by implementing the present invention, when there is a lockout subscriber in the representative selection operation using the trunk memory method, effective control is performed in which the common control device such as the marker MKR1 number group NG is used in a small number of times. be able to.

Furthermore, the present invention adds trunk memory, which is an improved representative selection method, to the combination of the common control method using markers MKR1 number group NG, etc., and the line lockout control method using line circuits, which are often used in existing exchanges. A particularly effective control means is realized when the configuration is adopted.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an example of the configuration of an exchange using a conventional trunk memory system, and FIG. 2 is a circuit diagram showing an example of the configuration of an exchange for explaining the present invention. SW...Call path switch, LR...Line circuit, SUB...Representative subscriber, locations I to N
...Telephone, TRK1 to TRKm--Trunk, TRKMEM...Trunk memory, MKR--
...Marker, NG...Number group.

Claims (1)

[Claims] 1. A subscriber circuit having a line lockout function that separates the exchange communication path from the subscriber line when the subscriber line is held invalid for a long time, a connection control device that performs connection control, and a translation device that converts connection information; At a telephone exchange, which has a storage device that stores the call connection state, the connection control device inputs each information of the translation device and the storage device, and performs connection control based on the input information, to the representative subscriber. When a call receiving operation is performed and the receiving terminal is in line lockout, the connection control device adds information necessary for retranslation such as translation information of the call that is partially in line lockout, and the translation device and storage device are reactivated. A connection method for line lockout of a representative subscriber, characterized in that the user starts up the translation device and the storage device, inputs each information of the translation device and the storage device, and receives the call at another terminal of the representative subscriber.