JPH01188156A - System for selecting subscriber line - Google Patents

Abstract

PURPOSE:To improve the profitability of communication by changing-over the connecting destination of a subscriber line with the operating switch of a network termination equipment(NT) and selecting an exclusive line as a transmission path with an opponent whose communication quantity is extremely large. CONSTITUTION:When a subscriber 10 or a subscriber 11 executes communication with a specified opponent 12 or 13, whose communication quantity is extremely large, the output terminal 106 of a switching part 3 is connected to an ISDN public exchange and a terminal 107 is connected to the exclusive line 5, whose using charge is cheaper than that of a public network. When the subscriber 10 or subscriber 11 executes the communication with the ISDN public network, an operating switch '1' of a switch 401 is depressed. When the communication is executed to the specified called party, an operating switch '2' is depressed. Thus, the transmission path can be operated most economically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a subscriber line selection method, and more particularly to a method for selecting a plurality of subscriber lines including a leased line.

The rest of the article [Prior art] Conventionally, the subscriber lines of the I5DN (integrated communications service network) are connected to one I5DN network, and connections with other networks are made as shown in Figure 3. The 15DN switch 4 was connected to the switch 8 via an interoffice communication line 9. In FIG. 3, 10 to 13 are terminals (TE), 15 is a subscriber path termination section (R), and 1.7 is a network termination device for 4-wire to 2-wire conversion.

[Problem that the invention seeks to solve]

In the above-mentioned conventional 15OH connection form, communication between subscribers is always carried out via exchanges and inter-office communication lines, but this is especially true for very limited purposes.

In addition, since there is no direct route connecting subscribers with a large amount of communication, it is necessary to permanently use (nail-up) a part of the high-performance switching equipment for connecting general public lines, and the equipment There was a gap in terms of efficient use.

The present invention provides a subscriber line selection system that can solve these conventional problems.

[Means for solving interlayer points]

The subscriber line selection method of the present invention uses a control circuit including a subscriber line operating switch and an output obtained from the control circuit to transmit the state of the subscriber line operating switch as information via overhead bits on the subscriber line. network terminating means including a circuit; and means for switching the connection of the subscriber line in accordance with information on the state of the subscriber line operating switch sent via the overhead bit.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1(a) is a block system diagram showing the configuration of an embodiment of the present invention. Conventionally, the NT (network terminal) 1 and the exchange 4 were directly connected via the subscriber line 2, but according to this embodiment, the subscriber line switching unit 3 is inserted in front of the exchange 4. However, by providing a transmission path via the dedicated line 5 to the subscriber line switching unit 6 of the other subscriber line with a large amount of communication, the terminals 10 and 11 accommodated in the subscriber line 2 can be switched to the subscriber line 14. It is possible to freely communicate with the terminals 12 and 13 housed in the terminals 12 and 13 without using the I5DN public exchanges 4 and 8.

FIG. 1(b) is a block diagram showing a specific example of the subscriber line switching unit 3 of the NTI' shown in FIG. A subscriber path 16 is stretched between the terminals 10 and 11.
is connected. NTI' is composed of an overhead bit integration section 102 and a control section 101 including operation switches, and FIG. 2 shows an external view of an example thereof. Control part 1
01 includes the 'operation switch 401 of FIG. 2, and the state of this switch (fi 2 N is selected in FIG. 2) is sent to the overhead bit integration unit 102 as an overhead bit. Overhead integration section 102
multiplexes the overhead pits sent from the control section 101 and the information bits sent from the terminal 10 (or 11) and sends them to the subscriber line switching section 3 via the subscriber line 2.

The subscriber line switching unit 3 includes an overhead separation unit 103, a control unit 104, and a changeover switch 105. The overhead separation unit 103 extracts signals from NTI' transmitted through the subscriber line 2.

The overhead bits are separated and passed to the control section 104, and the information bits from other terminals 10 and 11 are sent as they are to the changeover switch 105. The control unit 104 decodes the overhead pit and switches the changeover switch 105 in accordance with the state of the operation switch 401. For example, when the operation switch 401 is pressed down, the output of the overhead separation section 103 is connected to the terminal 106, and the operation switch 401 is connected to the terminal 106.
When the 2" of 01 is pressed, it is connected to the terminal 107. If the subscriber 10. or 11 has an extremely large amount of communication with a specific party 12. or 13, the output terminal 10 of the switching unit 3
6 to the l5DN public exchange and terminal 107 to the dedicated line 5, which has a lower usage fee than the public network, the subscriber 10. Or, if 11 communicates with the l5DN public network, press the 1" operation switch of the switch 401, and when communicating with a specified party, press the 2" operation switch to operate the transmission line most economically. can.

Note that although the above description has been made using the NT 1' and the subscriber line switching unit 3 as examples, it should be understood that the NT 7' and the subscriber line switching unit 6 also have the same functions.

In addition, as an application example of the present invention, the overhead separation unit 10
If a multiplexing function is added to 3 and used as a channel unit of a multiplexing device, compatibility with the network will be further improved and economical efficiency will be improved.

Furthermore, by connecting dedicated lines with different connection partners to the terminals 106 and 107 of the switching unit 3, and adding circuits to directly connect the terminals 106 and 107 to each of these two dedicated lines, Its application value will increase, as it will enable free three-dimensional communication via wires.

According to this embodiment, by switching the connection destination of the subscriber line using the NT operation switch, it is possible to select the applicable line as the transmission route between parties with an extremely large amount of communication, allowing economical communication. At the same time, it becomes possible to use expensive replacement equipment efficiently. Furthermore, by increasing the number of terminals to be selected in the subscriber line switching section and adding a circuit for connection between subscriber terminals, the degree of freedom in operating the dedicated line increases and more economical communication becomes possible.

〔Effect of the invention〕

As is clear from the above explanation, the present invention makes it possible to use a dedicated line as a transmission path between parties with extremely large amounts of communication by switching the connection destination of the subscriber line using the NT's operation switch. The benefits of improving the economic efficiency of communications are significant.

[Brief explanation of the drawing]

FIG. 1(a) is a block diagram of an embodiment of the present invention. Figure 1(b) is a configuration diagram of an example of the NT and subscriber line switching unit in Figure 1(a), Figure 2 is an external view of an example of the NT in Figure 1(b), and Figure 3 is a conventional FIG. 2 is a block system diagram showing a configuration example of the l5DN of FIG. 1, 1', 7, 7'...NT (Network termination equipment)
e 2.14... Subscriber line, 3, 6... Subscriber line switching section, 4, 8... Exchange, 5... Dedicated line, 9...
・Inter-office communication line, 10 to 13...TE (terminal), 10
1,104...Control unit. 102...overhead ff3e joint t 103.
... Overhead separation section, 105... Changeover switch,
4o1...operation switch. Figure 2 Figure 3

Claims (1)

[Claims] 1. Network termination means including a control circuit including a subscriber line operating switch and a circuit that transmits the state of the subscriber line operating switch as information via an overhead bit on the subscriber line based on the output obtained from the control circuit; , means for switching the connection of the subscriber line in accordance with the state information of the subscriber line operation switch sent via the overhead bit.