JPS6065641A - Exchange system - Google Patents

Abstract

PURPOSE:To designate a terminal device with a subscriber number independently of a physical location by storing physical information corresponding to a subscriber number of the terminal device connected to an exchange device in an exchange management device. CONSTITUTION:The exchange system is constituted of connecting exchanges 2a, 2b and the exchange management device 3 to a relay line 4 and connecting terminal devices 1a-1c, and 1d to the exchange devices 2a, 2b respectively. A subscriber number table 8 representing the correspondence between a subscriber number assigned to the terminal device and a terminal physical address showing the allocated position in the exchange device is provided to a storage device 6 of the devices 2a, 2b. An address converting table 13 representing the correspondence between the subscriber number of the terminal device and the physical address of the exchange device to which terminal devices are connected is provided in a storage device 11. When a user dials from a terminal device, the exchange device references the table 8, and when the address does not exist in the own exchange device, an address control signal is transmitted to the device 3, the device 3 references the table 13 and transmits a control signal to a corresponding exchange device.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention comprises a plurality of switching devices and a switching management device connected to a trunk line, and a plurality of terminal devices connected to a terminal device. It relates to an improved system in an exchange system.

[Prior art]

Conventionally, this switching system includes, in particular, a switching management device 4 that allocates the use of a plurality of switching layers and a plurality of data channels connected to a single closed ring relay;
Ring-type local area networks are known, consisting of a plurality of terminals connected to a switching device and a plurality of terminals connected to a switching device. This method uses a part of the subscriber number directly as a physical address indicating the housing location of the switching equipment and the terminal equipment within the switching equipment. For this reason, since the subscriber number depends on the physical location of the terminal device, there is a drawback that when making a dial connection, it is necessary to know the physical location of the other party's terminal device in advance.

[Summary of the invention]

This invention was made with the purpose of alleviating all the drawbacks of the conventional ones as described above, and includes a plurality of switching devices and a switching management device connected to a trunk line, and a plurality of terminal devices connected to the switching device. In an exchange system consisting of This provides an exchange system that allows the terminal device on the receiving side to be specified by a subscriber number independent of the physical location of the terminal.

[Embodiments of the invention]

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

FIG. 1 is a block diagram showing a ring-type exchange system according to an embodiment of the present invention. In the figure, la, lb
, Ic, and ld are terminal devices, 2a and 2b are switching devices, 3 is a switching management device, and 4 is a ring-shaped trunk line. Each of the exchange devices 2a, 2b and the exchange management device 3 are equipped with a processing device dedicated to exchange, as well as a microcomputer,
It is constructed using a minicomputer, etc. The ring-shaped trunk line 4 is, for example, a coaxial cable or an optical fiber.

FIG. 2 is a block diagram showing a switching device in the switching system of FIG. 1. In the figure, 2 is a switching device similar to each switching device 2a and 2b in FIG. 1, 5 is a CPU (central processing unit W), 6 is a storage device, and 7 is a communication device. The storage device 6 stores various programs and data to be read and processed by the CPU 5, and the communication device 1 is used for transmitting signals between the terminal device 1 and the exchange management device 3. This is hardware that includes controls, communication path switches, etc. In the storage device 6, there is an in-office subscriber number table 8.
There is an exchange processing unit 9 and the like.

FIG. 3 is a block diagram showing an exchange management device in the exchange system of FIG. 1. In the figure, exchange management device 3
10 inside each is a CPU.

11 is a storage device, and 12 is a communication device. Storage device 11
Various programs and data to be read out and processed by the CPU 10 are stored in the communication device 12, and the communication device 12 is hardware for transmitting signals with the exchange device 2. In the storage device 11, there is an address conversion table 13. There is an exchange management processing unit 14 and the like. Storage device 11\i where address conversion table 13 is stored, read-on memory (
ROM).

It is configured using random access memory (R, AM), disk devices, etc. ＼ FIG. 4 is a format diagram showing the format of signals transmitted in the switching system of FIG. 1.

In the figure, 15 is a command response code field, 16 is a called subscriber number field, and 17 is an additional data field. The order of arrangement of each command response code field 152, called subscriber number field, and additional data field 17 may be determined in any order; It is necessary to determine this in advance by agreement between the exchange management devices 3. Command response code field 15
contains a code indicating the type of signal (for example, whether it is an address control code or a response to an address control signal), and the called subscriber number field 1
6 contains the subscriber number assigned to the other party's terminal device.

FIG. 5 is a diagram showing the stored contents of the intra-office subscriber number table in the switching device of FIG. 2. In the figure, 81 physical addresses of switching devices each exist in the intra-office subscriber number table 8, 82 is the number of terminal devices connected to the switching device, 83 is a subscriber number, and 84 is a terminal physical address.

In the example shown in FIG. 5, for subscriber numbers 83 (1) to (n>) of terminal devices connected to the exchange device 2 I/C, corresponding terminal physical addresses 84 (1) to
(n) is provided.

FIG. 6 is a diagram showing the stored contents of the address exchange table in the exchange management device of FIG. 3. In the figure, 131, which exist in the address conversion table 13, indicates a subscriber number, and 132 indicates the physical address of the switching device and the physical address of the terminal. In the example shown in FIG.
All devices connected to! tU1 subscriber number 131
For (1) to (e), the corresponding physical address of the switching device and physical terminal address 132 (1) to
h) is provided.

FIG. 7 is a diagram showing an example of a signal sequence between the switching device and the switching management device in the switching system of FIG. 1. 7th
In the example shown in the figure, a terminal device 1a connected to an exchange device 2a is connected to a terminal device 1 connected to an exchange device 2b.
When making a full connection request by dialing to d, each switching device 2a.

2b and the switching management device 3; In FIG. 7, 18 is a dial connection request signal;
19 is an address control signal from the exchange device 2a to the exchange management device 3, and 20 is the exchange tube 8! An address control signal is sent from the device 3 to the exchange bag [2b, and 21 is an incoming call signal.

Next, the operation of the above-mentioned exchange system of the present invention will be explained with reference to all of the above-mentioned FIGS. 1 to 7. Now, the switching device 2a receives a dial connection request signal 1 from the terminal device 1a.
8, the entire in-office subscriber number table 8 in the switching device 2a is referred to from (i) of the subscriber number 83 shown in this dial connection request signal 18, and the (i) of the subscriber number 83 is
Check whether i) exists. As a result, if (1) of subscriber number 83 does not exist in subscriber number 83,
A code indicating a connection request is set in the command response code field 15, the subscriber number 83 (i) is set in the called subscriber number field 16, and an address control signal 19 is sent to the exchange management device 3. Exchange management device 3 has address fii
! When all I control signals 19 are received, the address conversion table 13 is referred to from (i) of the subscriber number 83 set in the called subscriber number field 16 in the signal. Since all available subscriber numbers 131 are set in ascending order in this address conversion table 13, the (!) of subscriber number 131 always exists, so (i) of subscriber number 131 exists. The physical address of the switching device in the terminal device corresponding to n and the terminal physical address 132 i> are determined. The physical address of this switching device and the terminal physical address 132 (i), that is, the received address control signal 20 is transmitted to the switching device 2b. When the switching device 2b receives the address control signal 20, it sends an incoming call signal 21 to the terminal device 1d corresponding to the physical address of the switching device and the terminal physical address 132 (i), indicating that a connection request has been made. Notice.

〔Effect of the invention〕

As explained above, the present invention is applicable to a switching system consisting of a plurality of switching devices connected to a trunk line, a switching management device, and a plurality of terminal devices connected to the switching devices. Since the configuration is such that the terminal device on the other side can be specified using an independent subscriber number, even if the physical location If of the terminal device is changed, there is no need to change the subscriber number as in conventional examples of this type. This has an excellent effect in that it is extremely easy to specify the terminal device on the receiving side.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a ring type switching system which is an embodiment of the present invention, FIG. 2 is a block diagram showing a switching device in the switching system of FIG. 1, and FIG.
4 is a block diagram showing the exchange management device in the switching system shown in FIG. 1. FIG. 4 is a format diagram showing the format of signals transmitted in the switching system shown in FIG.
6 is a diagram showing the stored contents of the in-office subscriber number table in the switching device shown in FIG. 6, and FIG. 7 is a diagram showing the stored contents of the address conversion table in the switching management device 4 of FIG. FIG. 3 is a diagram illustrating an example of a signal sequence between a switching device and a switching management device in the switching system. In the figure, 1, 1a to 1d...terminal device, 2.2a
. 2b... Exchange device, 3... Exchange management device, 4...
Ring-shaped trunk line, 5, 10...CPU (central processing unit), 6.11...Storage device, 7, 12...Communication device, 8...Internal subscriber number table, 81...・Physical address of exchange device, 82...Number of terminal devices, 83.1
31...Subscriber number, 9...Exchange processing unit, 13...
-Address conversion table, 132...Physical address of exchange device and physical address of terminal, 14...Exchange management processing unit, 15...Command response code field, 16...
Called subscriber number field, 17... Additional data field, 18... Dial connection request signal, 19.20
. . . address tlilJ control signal, 21 . . . incoming call signal. In each figure, the same reference numerals indicate the same or equivalent parts. Agent Masuo Daiiwa Figure 1 Figure 2N Figure 3 21 R4 Figure 6 Ai 131 132 Continued from page 1 ■ Inventor Tsubone Posted 35 Kamimachiya, Kamakura Mitsubishi Electric Corporation Information and Electronics Research Laboratory Procedural amendment (spontaneous) Day 1, Indication of case Japanese Patent Application No. 58-173534 No. 2, Title of invention Paternity change system 8 System 3, Relationship with the person making the amendment Patent applicant address 2 Marunouchi, Chiyoda-ku, Tokyo Chome 2-3 Name
(601) Mitsubishi Electric Co., Ltd. Representative: Hitoshi Katayama 4, Agent address: 2-2-3 Marunouchi, Chiyoda-ku, Tokyo (Complete) 5. Subject of amendment ``Detailed description of the invention'' in the specification and 1. - “Brief description of the drawing” column. 6. Contents of amendment (1) "Communication device 1" in the first line of page 5 of the specification. Corrected to "Communication device 7." (2) Correct the "Called subscriber field" in the fourth line of page 6 of the same book to "Called subscriber number field 16." (3) "Koken No. 9..." on page 11, line 6 of the same book. Correct it to "personal number, 84...terminal physical address, 9...".

Claims (1)

[Claims] A plurality of 9. exchange equipment and exchange management equipment,
and a plurality of terminal devices M connected to the switching device, in which the switching device has a personal identification number assigned to the terminal device and a reason why the terminal device is connected. A subscriber number table in the station showing the correspondence with the physical address of the terminal indicating the accommodation location in the exchange equipment, and a table of subscriber numbers in the station indicating the correspondence with the physical address of the terminal indicating the accommodation position in the exchange equipment, and the number (n subscriber; Referring to the subscriber number table, if the receiving subscriber number exists, means for connecting the terminal physical address by using this receiving subscriber number as the terminal physical address control signal; If the name number does not exist in the above-mentioned in-house registration number table,
means for transmitting an address control number 16 including the called subscriber number from the switching device to the switching management device using the trunk line, and the switching management device transmits an address control number 16 including the incoming subscriber number from the switching device to the switching management device. an address conversion table showing a correspondence between the enrollment examination number of the terminal device and the physical address of the conversion device to which the terminal device is connected;
Referring to the address translation table according to the called subscriber number included in the address control signal. and means for determining the switching equipment in which the N1g terminal device is present and transmitting the address control signal indicating the called subscriber number to the switching equipment using the trunk line. An exchange system featuring