JPH0828769B2 - Remote subscriber connection control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] A remote subscriber connection control system for performing switching connection control of subscribers accommodated in a digital exchange outside the area as well as subscribers accommodated in a local digital exchange, and a digital exchange. In order to make the remote subscriber's accommodation terminal and general subscriber's accommodation terminal in the same position, and to simplify the software, they are accommodated in a digital exchange outside the area of the own digital exchange. In the remote subscriber connection control system, in which the remote subscriber is a remote subscriber, and the remote subscriber is a subscriber accommodated in the own digital exchange, the exchange connection control is performed. Section is provided, and one terminal of the signal conversion section is connected to the remote subscriber housed in the out-of-area digital exchange by a dedicated line, and the other terminal is connected to the self-terminal. The remote subscriber is connected to the general subscriber accommodation terminal of the digital exchange, and the remote subscriber is processed as a subscriber accommodated in the own digital exchange via the signal conversion unit.

[Industrial applications]

The present invention relates to a remote subscriber connection control system for controlling exchange connection of subscribers accommodated in a digital exchange outside the area as well as subscribers accommodated in a local digital exchange.

When the service area of the exchange before the subscriber's move and the service area of the exchange after the move are different, usually at least the area code of the telephone number will be changed. However, when the telephone number is already registered to receive various services, it becomes necessary to register again with the new telephone number, and it becomes necessary to send the telephone number change notice to each place.

In order to prevent such service deterioration, even if you move to a different service area, you can receive the same switching connection control as if accommodated in the exchange in the previous service area without changing the telephone number. A remote subscriber connection control method is known. In this remote subscriber connection control system, it is desired to simplify the software of the digital exchange and to operate economically.

[Conventional technology]

FIG. 3 is a block diagram of a conventional example. A, B, C, D are subscribers, 10 and 20 are digital exchanges, 30 and 31 are PCM lines, and 11 and 21.
Is a digital channel switch (HSW), 12,22 are concentrators (LC), 13,14,23 are digital trunks (DT), 15,16,
24 and 25 are subscriber circuits (SLC).

Between the digital exchanges 10 and 20, the digital trunk 13,
The PCM circuit 30 is connected via the PCM circuit 30, and the digital exchange 10 and another digital exchange (not shown) are connected via the PCM line 31 via the digital trunk 14. The subscribers C and D are concentrated by the concentrator 12 via the subscriber circuits 15 and 16 and connected to the digital speech path switch 11. The subscribers A and B are also concentrated by the concentrator 22 via the subscriber circuit 24.25 and connected to the digital speech path switch 21.

When a subscriber accommodated in the digital exchange 10 moves into the service area of the digital exchange 20 and receives a remote subscriber service, if the subscriber is, for example, A, the digital exchange 10 for this remote subscriber A , 2
One fixed channel, for example, of 24 channels of the PCM line 30 between 0 is allocated, and the remote subscriber A is connected through the PCM line 30 as if accommodated in the digital exchange 10. As a result, the remote subscriber A is switched and controlled in the same manner as the other general subscribers C and D accommodated in the digital exchange 10 without changing the telephone number.

[Problems to be solved by the invention]

Each channel of the PCM line between ordinary digital exchanges is recognized as a trunk, but the fixed channel of the PCM line 30 assigned to the remote subscriber A must be recognized as a subscriber. . Therefore, in the digital exchange 10, one PCM line 30 needs to be divided into two types, that is, a trunk and a subscriber, and the software is very complicated.

Therefore, for remote subscribers, separately from general trunk lines
It is possible to provide a PCM line. In this case, the software in the digital exchange 10 can be simplified because the control according to the attribute may be performed for each PCM line. However, since there are almost no remote subscribers having the same number of channels as the PCM line, the multiplexed PCM line cannot be effectively used, which is a disadvantage of an uneconomical configuration.

The accommodating terminal of the general subscriber is configured in the concentrator 12 as the concentrating stage of the digital exchange, but what appears as a fixed channel of the PCM line 30 for the remote subscriber A is the digital as the distributing stage. Call path switch 11
It is. Therefore, in the digital exchange 10, the accommodating terminals of the general subscribers C and D and the accommodating terminal of the remote subscriber A are at different positions, which also complicates the software.

SUMMARY OF THE INVENTION It is an object of the present invention to make the accommodation terminal of a remote subscriber and the accommodation terminal of a general subscriber at the same position in a digital exchange and to simplify software.

[Means for solving problems]

The remote subscriber connection control system of the present invention can accommodate a remote subscriber in the same manner as a general subscriber by providing a signal conversion unit for the remote subscriber. Refer to FIG. explain.

Digital exchange 2 outside the area of own digital exchange 1
The subscriber 3 accommodated in the remote exchange is a remote subscriber, and the remote subscriber 3 is a subscriber accommodated in the own digital exchange 1 for switching connection control.
Is provided with a signal conversion unit 4 for remote subscribers, one terminal of the signal conversion unit 4 is connected to the remote subscriber 3 accommodated in the out-of-area digital exchange 2 by a dedicated line, and the other terminal is connected to the own digital exchange 1 Connected to the general subscriber accommodating terminal of the remote subscriber 3 via the signal converter 4
It is processed as a subscriber housed in. In addition,
Reference numerals 5 and 6 denote general subscribers accommodated in the digital exchanges 1 and 2, respectively.

[Action]

The signal conversion unit 4 converts the signal from the digital exchange 2 connected to the leased line indicated by the dotted line by the fixed channel of the PCM line in the same manner as the signal from the general subscriber. It can be connected to the accommodation terminal of the general subscriber 5 via the signal conversion unit 4. Then, in the digital exchange 1, for example, a call made by a remote subscriber can be processed in the same manner without being distinguished from a call made by the general subscriber 5 directly accommodated, so that the software can be simplified. .

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a block diagram of an embodiment of the present invention, in which 40 is a signal conversion unit (FXO) for remote subscribers, and the same reference numerals as those in FIG. 3 denote the same parts.

The signal conversion unit 40 has one terminal a and the other terminal b, and one terminal a is a dedicated line connection by a fixed channel of the remote subscriber A accommodated in the digital exchange 20 and the PCM line 30, that is, , A fixed connection without switching connection, as shown by the dotted line, remote subscriber A, subscriber circuit 24, concentrator 22, digital speech path switch 21, digital trunk 23, PCM line 30, digital trunk 13 Then, the digital communication path switch 11 and the concentrator 12 are connected and connected. The other terminal b is used to connect the general subscriber C of the concentrator 12 to the subscriber circuit.
It is connected via the accommodation device 12 which is connected via 15. The other terminal b of the signal conversion unit 40 is connected to the accommodation terminal of the concentrator 12 to which the general subscriber C or the like is connected via the subscriber circuit 15. Then, the PCM input / output from one terminal a
The signal conversion unit 40 converts between the signal system using the fixed channel of the line 30 and the signal system input / output from the other terminal b. Therefore, the signal conversion unit 40 is
The remote subscriber A accommodated in the digital exchange 20 is accommodated in the digital exchange 10 and has a conversion function corresponding to those signal systems and a relay function for calling signals, calling, disconnecting, dial numbers and the like. The same service as the general subscriber C can be received.

In the digital exchange 20 accommodating the remote subscriber A receiving the remote subscriber service, the on-hook information, off-hook information, dial information, etc. of the remote subscriber A are not subject to software control each time, and the subscriber circuit 24
-Concentrator 22-Digital speech path switch 21-PC assigned to remote subscriber A in the route of digital trunk 23
It is transmitted on a fixed channel of the M line 30. A call signal is also transmitted and received on this route. Further, in the digital exchange 10, the remote subscriber A's on-hook information, off-hook information, dial information, etc. are added to the terminal a of the signal conversion unit 40 in the route of the digital trunk 13-digital speech path switch 11-concentrator 12. And is converted into a signal similar to the signal applied to the concentrator 12 from the general subscriber C via the subscriber circuit 15.

Therefore, in the digital exchange 10, various information from the remote subscriber A accommodated in the digital exchange 20 outside the area can be processed in the same manner as various information from the general subscriber C. For example, when the remote subscriber A makes a call to a subscriber accommodated in another digital exchange (not shown), the calling information from the remote subscriber A is the fixed PCM line 30 of the leased line connection. The signal is transferred from the digital exchange 20 to the digital exchange 10 via the channel and the signal conversion unit 40
And is converted into a signal similar to the calling information from the general subscriber C.

In the digital exchange 10, a path between the signal conversion unit 40 and the digital trunk 31 is set based on this calling information, a subscriber accommodated in another digital exchange is called, and the called subscriber is called. Response, a call is made between the remote subscriber A and the remote subscriber A and the digital exchange.
A fixed channel is connected to the digital exchange 10 by using a leased line connection, and a channel acquired by selecting a free channel is used to connect the digital exchange 10 and another digital exchange.

Further, it goes without saying that the digital exchange 20 can also be provided with the signal conversion unit 40 to provide remote subscriber service, and the signal conversion unit 40 will be provided for remote subscribers.

〔The invention's effect〕

As described above, according to the present invention, the signal converter 4 is provided in the own digital exchange 1 so that the signal is transmitted from the digital exchange 2 outside the area in which the remote subscriber 3 is accommodated through the channel connected to the dedicated line. Signal is sent to the own digital exchange 1
The signal is converted so as to be the same as the signal from the general subscriber 5 accommodated in, and the reverse signal conversion is performed.
One terminal of the signal conversion unit 4 is connected to a dedicated line and the other terminal is connected to a terminal for accommodating a general subscriber. In the own digital exchange 1, the remote subscriber 3 is exchanged without distinguishing it from the general subscriber 5. Connection control can be performed. Thereby, there is an advantage that the software can be simplified without providing a special PCM line for the remote subscriber service.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention, FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a block diagram of a conventional example. 1 is an own digital exchange, 2 is an out-of-area digital exchange, 3 is a remote subscriber, 4 is a signal conversion unit, 5 and 6 are general subscribers, 10 and 20 are digital exchanges, 11 and 21 are digital communication line switches (HSW). ), 12,22 are concentrators (LC), 13,14,23
Is a digital trunk (DT), 15, 24 and 25 are subscriber circuits (SLC), and 40 is a signal converter.

Claims (1)

[Claims] 1. A subscriber (3) housed in a digital exchange (2) outside the area of the own digital exchange (1) is a remote subscriber, and the remote subscriber (3) is designated as the own digital exchange (1). In a remote subscriber connection control method for performing exchange connection control as a accommodated subscriber, a conversion function and a signal between a signal method input / output from one terminal and a signal method input / output from the other terminal The remote subscriber in which a signal conversion unit (4) having a relay function is provided in the own digital exchange (1), and the one terminal of the signal conversion unit (4) is accommodated in the outside-area digital exchange (2). (3)
And a dedicated line connection, the other terminal is connected to a general subscriber accommodation terminal of the own digital exchange (1), and the remote subscriber (3) is exchanged as a subscriber accommodated in the own digital exchange (1). Remote subscriber connection control method characterized by processing.