JPS62268242A - Exchange system for depopulated area - Google Patents

Abstract

PURPOSE:To ensure the communication channel with a host station even on emergency by using a changeover switch to connect a specific subscriber terminal equipment to the host station via an interface equipment provided independently of an exchange and a radio equipment if the automatic exchange is disabled for exchange connection. CONSTITUTION:In addition to a conventional exchange, a manual desk is provided, which has an emergency power supply connected to a specific subscriber terminal equipment 2 and a radio equipment 10. The manual desk 12 is provided with a subscriber interface device 8, an E&M two-way trunk 9, a control section 11 and a changeover switch 7 connecting the terminal equipment 2 to the exchange normally. The switch 7 is connected normally to the exchange side. If the exchange is disabled for exchange connection, the control section 11 operates the switch 7 to connect the radio equipment 10 to the terminal equipment 2 via the manual desk 12 thereby attaining the communication with the host station. In such case, since the terminal equipment 2 is directly accommodated in the manual desk 12, the function of a subscriber circuit 3 at normal communication is substituted by the subscriber interface device of the manual desk 12.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a switching system for depopulated areas, and is particularly suitable for use in depopulated areas where power conditions are poor and it is difficult to install trunk lines. Concerning land exchange system.

[Conventional technology]

For example, Japanese Patent Application Laid-Open No. 55-50202 discloses a system in which, in the event of an emergency, a switching device is used to change the connection of a call from the outer edge from connecting to an exchange to connecting to a manual reception desk, allowing the manual reception desk to respond. The emergency reception method is described. Also, JP-A-57-33860 and JP-A-57-7538
Publication No. 61 describes a wireless telephone switching system for depopulated areas in which terminals in depopulated areas are all connected to a depopulated area exchange using radio equipment, and are connected to an upper station via the depopulated area exchange.

[Problem that the invention seeks to solve]

Japanese Patent Publication No. 55-10202. The switching equipment described in the bulletin is installed in locations where the power situation is poor and there are frequent power outages, and where the topographical conditions between the host station and the upper station are poor and where inter-office relay failures are likely to occur. Some cases have not been considered. Furthermore, the switching equipment described in Japanese Patent Application Laid-open No. 57-55860 f and Japanese Patent Application Laid-open No. 57-63861 is
Similar to the above, no consideration is given to the case where the system is installed in a depopulated area with poor power supply.

In this way, the conventional depopulated Asahikawa switch did not take into consideration the power situation and topographical conditions of the depopulated area where the switch was installed, and if the switch became unable to connect due to a long power outage, etc. If a failure occurs in the relay line between a station in a depopulated area and a station in a depopulated area, there is a problem in that not only communication between general subscribers but also emergency communication with hospitals, 11th police, the fire department, electric power companies, etc. becomes impossible. O An object of the present invention is to provide a switching system for depopulated areas that can secure a communication line with an upper station using a specific subscriber's terminal even if the emergency situation described above occurs.

[Means for solving problems]

The above purpose is to provide a reswitching system in depopulated areas, in addition to an automatic switchboard, an interface device and a radio equipped with an emergency power supply independent of the automatic switchboard, and to provide the interface device with subscriber N-route and trunk functions. This is achieved by providing a connection changeover switch that changes the connection between a specific subscriber terminal and the wireless device or the automatic exchange.

[Effect]

Normally, specific subscriber terminals in sparsely populated areas communicate with higher-level stations via automatic exchanges, just like general subscriber terminals. In an emergency when the automatic exchange is unable to connect due to a power outage or trunk line failure, etc., the switch is switched to connect the specified subscriber terminal to the upper station via the interface device and radio,
Secure calls over wireless lines.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

The figure is a system configuration diagram showing a connection state between a depopulated area conversion system and its upper station. In addition to a normal exchange consisting of a subscriber circuit 3 connected to a general subscriber terminal 1 used for normal communication, a network 4, an E&Mi rank 5, and a transport device, bfr's exchange 7 for connecting the specific subscriber terminal 2 and the radio device 10
A manual stand 12 is provided which has a power source separate from the stem.

The manual base 12 includes a subscriber interface device 8 and an E
It is equipped with a &U two-way trunk 9, a control s+1, and a changeover switch 7 that normally connects the specific subscriber terminal 2 to the switch. The upper station is general subscriber terminal 1, subscribed?
3' mu road 6, it's work 4. E&M trunk5.
Transport device! c6, and a radio device 10.

In the case of normal communication between the general subscriber terminal 1 of another depopulated station and the general subscriber terminal 1 of the upper station, the general subscriber terminal 1
The analog call data from the subscriber circuit 6 is digitally exchanged, and the network 4 is again connected to the digital exchange, and the E&M trunk 5 converts it into analog data again, and the transport device 6 advances the υ inter-office trunk line and transports it to the other station. device 16 and similarly B&
This is achieved by receiving the data through the M trunk 5, the network 4, and the subscriber circuit 6 as in the case of general subscribers.

The specified subscriber terminal 2 installed in a 1 fc% depopulated area station is normally controlled by the control unit 11 of the manual unit 12, and the connection changeover switch 7 is connected to the exchange side. Conduct anecdotes through the same route as subscribers.

In an emergency when the switchboard of another depopulated station is unable to make an exchange connection, operate the connection selector switch 7 using the control s11 of the manual stand 12,
The radio device 10 is connected to the specific subscriber terminal 2 via the manual stand 12, and the upper station's non-IvlI 1 device 10° E & Mi rank 5
, network 6, and subscriber circuit 6, a route is created with 1 and a telephone call is made as with the general subscriber of the upper station. At this time,
Since the specific subscriber terminal 2 is directly housed in the manual console 12, the function of supplying communication current and monitoring the calling party performed by the subscriber circuit 6 during normal communication is carried out by the subscriber terminal equipped in the manual console 12. The interface device 8 takes over. Also, the signal is E&
Bidirectional B&M? Rank 9 is equipped on the manual stand, allowing two-way communication with one line.

In other depopulated stations, the same as the general subscriber usually used, 1, subscriber (ro) route 6, network 4, E&M i-link 5,
In addition to the power supply that operates the transport device 6, it has an emergency power supply that operates the manual stand 12 that accommodates the specified subscriber terminal 2 and the radio device 10, so that the exchange equipment of another depopulated station cannot be replaced due to a power outage or other reason. Even if connection becomes impossible, it is possible to communicate with the higher-level station via the above-mentioned wireless line.

Therefore, according to this embodiment, even if the exchange becomes inoperable due to a power outage, etc., a specific number of subscriber terminals can be disconnected from the exchange and connected to the higher-level station by wireless, thereby enabling the specific subscriber terminals to be disconnected from the exchange. can be used to secure communication with higher-level stations.

〔Effect of the invention〕

According to the present invention, even if a power outage occurs due to the power situation in a depopulated area, a specific subscriber terminal can be connected to a higher-level station, and communication in an emergency can be ensured.

[Brief explanation of the drawing]

The figure is a system configuration diagram showing a connection state with an upper station of a depopulated area switching system according to an embodiment of the present invention. 0 1... general subscriber terminal, 2... specific subscriber terminal, 3
°゛Subscriber circuit, 4...Network, 5...E&
M) rank, 6...transport device, 7...connection changeover switch, 8...subscriber interface device, 9...
E&M two-way 1 rank, 1G... radio, 11...
Control unit, 12... manual stand. , -N

Claims (1)

[Scope of Claims] 1. An interface device and a radio device operated by emergency power supply are provided in an automatic exchange, and the interface device has subscriber circuit and trunk functions, and a specific subscriber terminal and the automatic exchange or the radio device. A switching system for depopulated areas, characterized in that a changeover switch is provided to connect the automatic switching equipment, and in the event of an emergency when the automatic switching equipment becomes inoperable, the specific subscriber terminal is connected to the upper station via the radio equipment. . 2. The switching system for depopulated areas as set forth in claim 1, wherein the interface device is housed in a manual stand, and is connected to an upper station by dial operation by the operator of the manual stand.