JPH01188197A - Remote concentrator with switch for connection in its own station - Google Patents

Abstract

PURPOSE:To eliminate the returning of a master station exchange by providing a switch part and a control part to execute the control of the switch part in a remote concentrator side. CONSTITUTION:The dial signal of a subscriber A is received by a subscriber concentrating part 1 and analyzed by a concentrator control part 5. Then, whether the signal is its own station call or not is identified. When the signal is identified as its own station call, a switch part 2 and a dial tone sending part 3 are connected and a call returning tone is sent to the subscriber A. A calling signal is sent from a subscriber concentrating part 7 to a subscriber B. After the subscriber B gives a response, the subscribers A and B are connected through the switch part 2. Thus, the connection between the subscriber can be executed without through the master station exchange.

Description

[Detailed Description of the Invention] [Industrial Application Field 1] The present invention relates to a remote line concentrator connected to a master exchange via a line and accommodating a plurality of subscribers, and particularly relates to a remote line concentrator that is connected to a master exchange through a line and accommodates a plurality of subscribers. This invention relates to a remote line concentrator with a switch for connection within its own station.

[Prior Art] Conventionally, in this type of remote line concentration system, even connections between subscribers within a line concentrator are connected via a master exchange.

[Problems to be Solved by the Invention] However, in the conventional remote line concentrator described above, even connections between subscribers within the remote line concentrator are connected via the master exchange. When connecting between remote line concentrators and master exchanges, two transmission paths are used, one for going and one for returning, which has the disadvantage of poor efficiency.

[Means for Solving the Problems] The present invention solves the above problems and provides a remote line concentrator with an internal connection switch that allows connections between subscribers within the remote line concentrator without going through a master exchange. The purpose is to provide

In order to achieve the above object, the present invention provides a remote line concentrator with an internal connection switch, which is connected to a master exchange via a line, and accommodates a plurality of subscribers that can be controlled by the master exchange. In the remote line concentrator, the remote line concentrator connects a plurality of subscribers, and includes a switch section that switches connections between each subscriber or between the subscribers and the master exchange; The apparatus includes a control section that identifies whether or not the call is to a subscriber within the remote line concentrator, and controls the switch section based on the identification result.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a switch remote line concentrator for intra-office connection according to an embodiment of the present invention.

In the same figure, the remote line concentrator according to the present embodiment includes a subscriber line concentrator l that accommodates a plurality of subscribers A, a subscriber line concentrator 7 that accommodates a plurality of subscribers B, and a subscriber line concentrator 1.7 that accommodates a plurality of subscribers B.
a switch section 2 connected to the dial tone sending section 3 and the transmission line interface section 4; a line concentrator control section B section 5 that controls the switch section 2, the dial tone sending section 3, etc.; and a line concentrator. It is composed of a control section 5 and a data link control section 6 which is connected to the transmission path interface section 4 and performs control with the master exchange.

On the other hand, the master exchange includes a transmission line interface unit 9 connected to the transmission line interface unit 4 of the remote concentrator via a line, a master exchange switch 10, a data link control unit 11, and a master exchange switch 10. and a master exchange control section 8 that controls the data link control section 11. Next, the operation of this embodiment will be explained.

A connection request from subscriber A to subscriber B is made by the concentrator control unit 5.
The dial tone sending unit 3 and the switch unit 2 are controlled by the dial tone transmitter 3 and the dial tone is sent. That is, the dial signal of subscriber A is received by the subscriber line concentrator 1, and analyzed by the east line equipment control unit 5 to determine whether it is a local call or not.

If it is identified as a local call, switch section 2 and dial)
- tone sending section 3 is connected and a call back tone is sent to subscriber A. Also, a calling signal is sent to subscriber B from subscriber line concentrator 7. After subscriber B responds, subscriber A,
B is connected through the switch section 2.

If subscriber A or subscriber B requests special services such as speed dialing, three-way calling, and at-on (Add-on), the east line equipment control unit 5 requests data link control unit 6 .11 and transmission line interface section 4.
The remote line concentrator is controlled by accessing the master exchange controller 8 of the master exchange through data communication through the master exchange controller 9.

In addition, when a call is made from subscribers A and B in the remote concentrator to the parent station subscriber or other station subscriber, the call is sent through the data link control section 6.11 and the transmission line interface section 4.9. Necessary information such as the small number is sent to the master exchange control unit 8 to connect the call.

[Effects of the Invention] As described in 1-1 above, the present invention provides a switch section and a control section for controlling the switch section on the remote line concentrator side, so that in the case of connection between joining grooves in the remote line concentrator, This has the effect of making it possible to use the transmission path more efficiently without the need to turn back the master exchange.

In addition, even in an emergency such as when the transmission line with the master exchange is cut off, the connection between subscribers in the remote concentrator is maintained by +1, which also serves as an emergency measure.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a remote line concentrator with a switch for internal connection according to an embodiment of the present invention. 1, 7: Subscriber concentrator 2: Switch section 3: Dial tone transmission section 4.9: Transmission line interface section 5: Concentrator control section 6.11: Data link control section 8: Master exchange control section, 10 : Master exchange switch

Claims (1)

[Scope of Claims] A remote line concentrator connected to a master exchange via a line and accommodating a plurality of subscribers that can be controlled by the master exchange, wherein the remote line concentrator connects the plurality of subscribers. , a switch unit that switches connections between each subscriber or between the subscribers and the master exchange; and a switch unit that identifies from the subscriber's dial signal whether the call is to a subscriber in the remote line concentrator. and a control section that controls the switch section based on the identification result.