JPH01293048A - Converter trunk connection processing system - Google Patents

Abstract

PURPOSE:To connect a proper converter trunk to all data terminals even when a data terminal having a different data format is connected to the same subscriber's line by not registering a data format in each data terminal but connecting the data format to the converter trunk. CONSTITUTION:A pool identifier decoding means 31 decodes the name of a converter pool designated by a pool identifier 11 issued from each data terminal 6 and a converter trunk setting means 32 selects a converter trunk 8 in accordance with a decoded result of the means 31 and sets the route of a network 2. Since a necessary converter pool 9 is designated by using the pool identifier 11 in such way, data format converting service can be realized by setting the pool identifier 11 by taking the data format of one of the data terminals 6 into account, even when the data terminal 6 having a different kind of data format is connected to the same subscriber's line.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] Data is transmitted and received between data terminals having different data formats in accordance with the data format conversion function of a converter trunk connected to a network. Concerning converter trunk connection processing methods in digital switching systems.

Even if the subscriber line is to accommodate multiple data terminals with different data formats.

The purpose is to make data format conversion possible.

The data terminal that executes call processing is configured to send a pool identifier to specify the converter pool that it needs, and the digital switching system is configured to send out a pool identifier for specifying the converter pool that it needs, and the digital switching system 5 Processes to set a network route to a vacant converter trunk.

[Industrial application field]

The present invention processes data transmission and reception between data terminals having different data formats according to the data format conversion function of a converter trunk connected to a network. This invention relates to a converter trunk connection processing method in a digital switching system.

As the digitalization of communication networks progresses, it becomes possible to realize digital communication channels between subscribers, which means that not only telephones but also non-telephone terminals such as data terminals and facsimile terminals (hereinafter referred to as data terminals) will be able to communicate directly with each other. By being able to accommodate advanced digital comprehensive services M4 (I 5DN)
is established.

The transmission speed of data terminals accommodated in such an 15DN is 2. Usually, the exchange processing speed of the digital switching system (-
For boat fishing, the speed is slower than 64 Kbps), so data must be converted to various formats to match this 64 Kbps.

From now on, the network of digital exchange systems will
Converter trunks will be installed to perform the conversion process to different data formats, but when implementing these converter trunks, it is necessary to place as little burden on the digital switching system as possible. There is.

[Conventional technology]

First, the data format will be specifically explained. A data format is a low-speed pit stream of data from a data terminal that is carried at 64 Kbps, which is the exchange processing speed of a digital exchange system.Several different formats are used for this data format, depending on the conversion method. There is. An example is shown in FIG. In this figure, 4.8 Kbps of data is
An example of converting to Kbps is shown below.

Figure 5 (A) shows 6 bits of original data added to 2 bits of dummy data, which is repeated 10 times at a cycle of 8 kHz to convert it to 64 Kbps, and Figure 5 (B) adds a bit representing the beginning and 3 bits of dummy data to the 6-bit original data, and converts it to 8 KH.
One by one is assigned to the beginning position of the cycle of z (which means 64
to bps.

Figure 5(C) shows 54K by attaching a flag indicating the start and a flag indicating the end to the 6-bit original data, and placing all the repeated portions in Figure 5(A) in "l".
It converts to bps.

As there are several types of data formats, in order for a digital switching system to accommodate data terminals with different data formats, converter trunks that perform mutual conversion between paired data formats are required. A large number of converter pools are provided for each type of conversion, and one converter pool corresponding to the data format of the data terminal that performs transmission and reception can be selected from among the converter pools (required).

Therefore, in the conventional digital exchange system.

As shown in FIG. 6, a data format information table in which the data format name of the data terminal to be accommodated is registered for each data terminal is developed on the main memory, and
As shown in FIG. 7, a pool boat information table that stores boat position information on the network of converter trunks for each converter pool, and a pool address information table that stores address information of this pool boat information table are stored in the main memory. It was configured to expand upwards.

9. When a call occurs from the originating data terminal to the terminating data terminal, the digital switching system specifies the data format name of the originating and terminating data terminal according to the data format information table. is used to find the address information of the converter pool that is responsible for converting between these data formats, according to the pool address information table.

Next, one unused converter trunk is selected according to the pool boat information table specified by this address information, and one incoming and outgoing data terminal is connected to the port of this selected converter trunk by setting 5 network routes. By connecting these devices, it was possible to send and receive data between data terminals with different data formats.

[Problem to be solved by the invention]

However, in the I5DN, a plurality of data terminals having different data formats may be connected to one subscriber line. In such a case, the incoming data terminal is specified by the subaddress from the outgoing data terminal, but in a digital switching system, only one data format can be registered for one subscriber line. If so, there was a problem in that only data terminals with registered data formats could receive data format conversion services by the converter trunk.

Further, in the conventional technology, it is necessary to register the data format name of each data terminal in advance and create a data format information table.

It is necessary to equip the digital exchange system with a program to realize this registration. Then, since it is necessary to search the pool address information table to find the required converter pool using the data format name found from the data format information table, this search is implemented in the digital exchange system. It is necessary to equip programs for this purpose. As described above, the conventional technology has the problem of increasing the processing load on the digital switching system.

The present invention has been made in view of the above circumstances, and aims to reduce the processing load of the digital exchange system, and
The purpose of this invention is to provide a converter trunk connection processing method that enables data format conversion to be realized in a digital switching system even if a subscriber line accommodates multiple data terminals with different data formats. It is.

[Means to solve the problem]

FIG. 1 is a diagram showing the basic configuration of the present invention.

In the figure, 1 is a digital switching system, 2 is a network that sets a route, 3 is a common control device that controls the network 2, and 6 is a data terminal accommodated in the digital switching system l. 1 is a converter trunk that transmits and receives data in different data formats, 8 is a converter trunk that performs mutual conversion between paired data formats, and 9 is a converter pool consisting of a large number of converter trunks 8 of the same type. , which are prepared in multiple types and connected to the network 2; 10 is called address information issued by the data terminal 6 that executes call processing; 9 is information that specifies the data terminal 6 on the called side; 11 is A pool identifier issued by the data terminal 6 that also executes the call processing, which specifies one of the plurality of types of converter pools 9; 31 is a pool identifier decoding means provided in the common control device 3; 32 is converter trunk setting means provided in the common control device 3, which decodes the converter pool 9 specified by the identifier 11, and the pool identifier decoding means 31
This is to connect a data terminal 6 with nine outgoing and incoming calls to an unused converter trunk 8 in the converter pool 9 that has been decrypted.

(Function) In the present invention, the 2-pool identifier decoding means 31 decodes the converter pool name designated by the pool identifier 11 issued from the data terminal 6, and the converter trunk setting means 32 decodes the converter pool name specified by the pool identifier 11 issued from the data terminal 6. Converter trunk 8 is selected and a route for network 2 is set.

In this way, in the present invention, a necessary combined pool 9 is specified using the pool identifier 11.

Even if data terminals 6 with different data formats are connected to the same subscriber line, data format conversion services can be realized by setting the pool identifier 11 in consideration of the data format of the data terminals 6. You will be able to do it.

〔Example〕

Hereinafter, the present invention will be explained in detail according to examples.

FIG. 2 shows a system configuration diagram for realizing the convert trunk connection processing method of the present invention.

In the figure, the same parts as in FIG. 1 are indicated by the same symbols, and 1 is a digital switching system, 2 is a network, 3 is a common control device, 4 is a main memory, and 5 is connected to a data terminal. Converts low-speed data handled by data terminals into data format.

Also, a data interface device that performs processing of converting the data format into low-speed data, 6 a data terminal;
Reference numeral 7 denotes a line circuit 59 for accommodating the data interface device 5 in the digital switching system 1, which is a converter pool.

As explained in FIG. 1, the converter pool 9 is made up of a large number of converter trunks.

These converter trunks perform the conversion process between data formats. Each converter trunk is configured to be connected to a port of the network 2 in order to realize mutual conversion of data formats. This converter pool 9 is.

A plurality of types are prepared so that conversion processing of all data formats handled by the data interface device 5 can be realized. For example, the data format handled by the data interface device 5 is the 3 format explained in FIG.
If these three data formats are represented by "a", "b", and "C", the converter pool 9 that performs mutual conversion between "a" and "b" and "a" Three types are prepared: a converter pool 9 that performs mutual conversion between " and "C", and a converter pool 9 that performs mutual conversion between °b" and "C".

The contents of the table that will be developed on the main memory 4 in order to implement the present invention will be explained with reference to FIG.

As shown in this figure, the tables provided in the present invention include a pool boat information table that stores boat position information of converter trunks for each converter pool, and an identification code such as a serial number to store address information of this pool boat information table. and a code/address correspondence table that is stored in association with the code/address correspondence table. In this way, in the present invention, although it is necessary to provide a pool boat information table as in the prior art, the data format information table in FIG. 6 and the pool address information table in FIG. 7, which were required in the prior art, are There is no need to prepare.

Next, the present invention includes such a table.

It will be explained how to connect the data terminal 6 with nine incoming and outgoing calls to the necessary converter trunks.

In order to realize this, in the present invention, 1 the data terminal 6 on the transmitting side;
The digital exchange system 1 requires a user to specify the converter pool 9 at the same time when specifying the address information of the data terminal 6 on the receiving side using a dial or the like.
It also processes to notify the digital exchange system 1 of the identification code of the required converter pool 9. This notification method is 1 example.

rX, Y, A, z+, 2! , Z3. This can be achieved by specifying Z4 j and a number.

Here, rX, YJ are special numbers for accessing the converter pool 9, "A" corresponds to the identification code of the code/address correspondence table explained in FIG. 3, and rZ+, Zt, Zs, Z4 J is the extension number or the like of the data terminal 6 on the receiving side as in the past.

In this way, if the user directly specifies the converter pool 9 that the user needs using the identification code, the digital switching system 1 that has received the converter pool access special number can decipher the subsequently sent identification code. death,
According to the code/address correspondence table from the identification code decoded in this way, it becomes possible to immediately know the address information of the converter pool 9 that executes the data format conversion process. From now on, the digital switching system 1 will select the desired converter pool 9 from within the pool boat information table according to this address information.
Since the port can be identified, the use flag is checked, an unused converter trunk is found, and processing is performed to connect the outgoing and incoming data terminal 6 to that port. From now on, digital exchange system 1 will continue to operate as 1
The data terminal 6 on the called side is called, and if a response is returned, a response signal is sent to the data terminal 6 on the calling side.

The communication state is entered according to the data format conversion processing function of the connected converter trunk.

In this way, in the present invention, necessary converter trunks can be connected to the network without having to register the data format used by the data terminal 6 in advance.

Since no registration process is required, even if there is a change in the data terminals 6 accommodated in the digital exchange system 1, it is sufficient to replace only the converter pool 9. in particular.

As shown in FIG. 4, the converter trunk of the converter pool 9 is constituted by the data interface device 5 that performs the conversion process and the line circuit 7, so it is only necessary to replace the data interface device 5.

Although the illustrated embodiment has been described above, the present invention is not limited thereto.For example, the identification code that designates a converter pool is not limited to numbers.

〔Effect of the invention〕

In this way, according to the present invention, it is possible to connect to a converter trunk without registering the data format for each data terminal, so data terminals with different data formats can be connected to the same subscriber line. This means that correct converter trunk connections can be achieved for all terminals even if something happens. Moreover,
There is no need to register the data format, and there is no need to search the pool address information table.

This will greatly reduce the processing load on the digital switching system. Even when the station data of the other party's data terminal cannot be checked, as in the case of connection to and from the digital station vA/trunk line, correct converter trunk connection is possible.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle configuration of the present invention. FIG. 2 is a system configuration diagram of the present invention. FIG. 3 is an explanatory diagram of a table developed in main memory. FIG. 4 is an explanatory diagram of the configuration of the converter trunk. FIG. 5 is an explanatory diagram of the data format. FIGS. 6 and 7 are explanatory diagrams illustrating the configuration of the prior art. In the figure, 1 is a digital switching system, 2 is a network, 3 is a common control device, and 4 is a main memory. 5 is a data interface device, 6 is a data terminal, 8
is converter trunk, 9 is converter pool, 10
is the incoming call address information, and 11 is the pool identifier.

Claims (1)

[Claims] A digital switching system (
1) is configured to have a converter pool (9) consisting of a large number of converter trunks (8) that perform mutual conversion of paired data formats, connected to the network (2) in a plurality of types; ) Executes call processing in a digital switching system that transmits and receives data between data terminals (6) with different data formats according to the data format conversion function of the converter trunk (8) selected by route settings. The data terminal (6) transmits a pool identifier (11) for specifying the converter pool (9) it needs, and the digital switching system (1) Converter pool (9) specified by pool identifier (11)
) by setting a route for the network (2) on the vacant converter trunk (8) of the converter trunk (8), data can be sent and received between data terminals (6) having different data formats. Features a converter trunk connection processing method.