JPH0370948B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic communication route management system in a communication exchange for telephone communication and facsimile communication pipes.

[Prior art and its problems]

As a conventional communication route management system, there is one shown in FIG. 1 that is applied to a facsimile communication network. In the figure, 1 and 2 are toll exchanges, 1a,
2a is a network, 1b, 2b are central control units, 1c, 2c are common route translation devices, 1d,
2d is an image signal transfer path, 1e, 2e; 1f, 2f
are common line signal paths, 3, 4; 5, 6 are local exchanges,
7, 8; 9, 10 are facsimile terminals, 11, 1
2 is a facsimile storage and conversion device.

According to this, the receiving terminal number is dialed from the calling terminals 7 to 10. Then, in order to prevent invalid connections to the facsimile storage and conversion devices 11 and 12,
In the toll exchanges 1 and 2, the common line route translation devices 1c and 2c search for the common line station code information of the toll exchanges 1 and 2 based on the above-mentioned receiving terminal number. and a toll exchange 1 that accommodates the called terminal number;
2, the information of the called terminal is verified by a signaling system using common lines 1f and 2f.

Here, an invalid connection refers to a case in which facsimile information cannot be transmitted while the facsimile terminal is connected to the facsimile storage and conversion devices 11 and 12 because the receiving terminal of the destination facsimile terminal does not have a contract or is suspended. In order to prevent such a situation, the above-mentioned called terminal information is verified in order to check the status of the called terminal in advance.

However, according to the above conventional example, with the expansion of the facsimile communication network, that is, the installation of a new toll exchange, for example, the connection of the local exchange 6 is switched from being under the control of the toll exchange 2 to being under the control of the newly installed toll exchange. There are cases where this is necessary (such as when the number of local exchanges managed by the toll exchange 2 becomes too large). In such a case, it is necessary to change the common line station code information in the common line route translation devices 1c and 2c at all toll exchanges of the facsimile communication network at the same time as the above connection switching, which is very troublesome. There were flaws.

[Purpose of the invention]

In a facsimile communication network, for example, the present invention provides a common line signal relay control device in a toll exchange, thereby making it unnecessary to simultaneously change information on all toll exchanges in the facsimile communication network when expanding the facsimile communication network, and making it possible to An automatic communication route management system that eliminates the above-mentioned drawbacks by allowing a facsimile data conversion device (corresponding to reference numeral 13 in FIG. 2), which is a telephone system device and does not have a common line route translation device, to be inserted into a facsimile communication network. The purpose is to provide

[Structure of the invention]

For this purpose, the configuration of the present invention is such that in a communication system consisting of a facsimile terminal, a local exchange, a toll exchange, a facsimile storage and conversion device, a facsimile data conversion and connection device, and an information center, a common line received by the toll exchange is provided. a first identification unit that identifies whether the signal is a signal to be relayed; and, in the case of a signal to be relayed, a second identification unit that identifies whether the signal is a signal processed by a local toll exchange or a signal processed by another toll exchange; In the case of a signal that requires a relay connection, the common line signal is used to cause the response signal for the common line signal to be directly returned from the relay-connected toll exchange directly to the requesting toll exchange or the facsimile data exchange connection device. a common line signal relay control device having a re-editing section for re-editing the common line signal to rewrite the station code of the requesting toll exchange or the facsimile data exchange connecting device; By inputting the common line signal for incoming terminal verification received from the Kushimi data conversion connection device or other toll exchange to the common line signal relay control device, the local toll exchange processing signal and the multi-station toll exchange processing signal are transmitted. and in the case of a signal processed by another station's toll exchange, perform re-editing to rewrite the station code of the common line signal,
The common line signal is relayed to the corresponding multi-station toll exchange.

[Embodiments of the invention]

FIG. 2 is a block diagram of an example of a facsimile communication network showing an embodiment of the automatic communication route management system according to the present invention. In the figure, the same parts as in FIG. The explanation will be omitted.

In the figure, 1g and 2g are common line signal relay control devices, which are provided in toll exchanges 1 and 2, respectively.
13 is a non-telephone facsimile data conversion/connection device, 14 is an information center, and 15 and 16 are signal relay points. The common line signal paths 1e and 2e are connected to the facsimile storage and conversion device 1 via relay points 15 and 16, respectively.
1, 12, facsimile data conversion connection device 13
The common line signal paths 1f and 2f are not provided. The rest of the configuration is the same as the configuration shown in FIG. The non-telephone facsimile data conversion/connection device 13 does not have common line code information for all toll exchanges in the facsimile communication network, which changes due to the installation of new toll exchanges. It has only the common line station code of No. 2 as fixed information.

Here, the toll exchanges 1 and 2 receive connection requests for facsimile communication from the facsimile terminals 7 to 10, and the non-telephone type facsimile data conversion and connection device 13 receives the connection request from the information center 14. And facsimile storage conversion device 1
In order to prevent invalid connections to terminals 1 and 12, information regarding the receiving terminals that have received a connection request to the toll exchanges 1 and 2 having receiving terminal information is checked. Such information collation is performed via common lines 1e and 2e and signal relay points 15 and 16. On the other hand, each toll exchange 1, 2 issues a relay processing request to the common line relay control devices 1g, 2g for all received common line signals.

Here, the common line relay control devices 1g and 2g each have a first
a second identification unit that identifies whether the signal to be relayed is a local toll exchange processed signal or another toll exchange processed signal; and another toll exchange processed signal;
That is, in the case of a signal requiring a relay connection, the common line signal causes a response signal to the common line signal to be directly returned from the relay-connected toll exchange to the requesting toll exchange 1, 2 or facsimile data conversion connection device 13. It consists of a re-editing department.

Here, re-editing the common line signal means that, in the case of a signal that requires a relay connection, the response signal for the common line signal is sent directly from the relay-connected toll exchange to the requesting toll exchange or facsimile data conversion connection device. This involves rewriting the station code of the common line signal in order to send it back.

Here, a case will be explained in which a new toll exchange is installed in a facsimile communication network and connection switching between the toll exchange and the local exchange is required.

In the figure, for example, when the local exchange 6 is switched from being under the control of the toll exchange 2 to being under the control of a newly installed toll exchange, the common line station code information is rewritten in the toll exchange 2; There occurs a period in which the exchange 1 does not perform such rewriting.

In this case, a signal sent via the common line 1e for verifying incoming terminal information with the local exchange 6 as the transmission destination from the toll exchange 1 that has not yet rewritten the common line station code information will be sent to the newly installed toll exchange (incoming (accommodating terminal information) has not yet been set with a common line station code, so it is sent to the toll exchange 2 that was managing the local exchange 6 before the connection was switched. Then, the common line control device 2g of the toll exchange 2 identifies the signal,
Re-edit and send to the newly installed toll exchange.
Since the newly installed toll exchange can recognize that the source is the toll exchange 1 based on the re-edited signal, the reply to the verification will be directly transmitted from the newly installed toll exchange to the toll exchange 1.

Therefore, even if the common line station code information has not been rewritten in the toll exchange 1, the facsimile terminals 7 and 8 managed by the toll exchange 1 and the facsimile terminal 10 managed by the newly installed toll exchange
It becomes possible to communicate with

The rewriting of the common line station code information of the toll exchange 1 does not have to be done at the same time as installing a new toll exchange, that is, switching the line, but it can be done at a later date. Until the rewriting is done, the common line station code information is managed by the local exchange 6. The toll exchange 2 relays signals for checking information regarding the receiving terminal.

Next, a case will be described in which the non-telephone type facsimile data conversion/connection device 13 is connected to the facsimile communication network.

Non-telephone facsimile data conversion connection device 1
3 has only the common line station code of the nearby toll exchange as fixed information. The facsimile data conversion and connection device 13, which has received the connection processing from the information center 14, creates a common line signal to the toll exchange 1 corresponding to the common line station code based on the receiving terminal number sent from the information center 14. .

The toll exchange 1 uses the first identification section of the common line signal relay control device 1g to identify whether or not the received signal is a signal to be relayed. Next, if the signal is a signal to be relayed, the second identifying section identifies whether it is a signal processed by the own toll exchange or a signal processed by another toll exchange. In this case, if the signal is a local toll exchange processing signal, the toll exchange 1 performs connection processing based on the received common line signal.

On the other hand, if it is a signal processed by another toll exchange, the re-editing section rewrites the destination code of the common line signal to another destination code, and also rewrites the originating station code to the station code of this toll exchange.

Here, an area for a network internal user part is provided within the common line signal, and the station code of the original transmission source is recorded in this area. The common line signal edited by the re-editing section is relayed to the corresponding toll exchange 2 of another station.

The corresponding toll exchange 2 directly sends a response signal back to the request source facsimile data conversion connection device 13 through the internal user part.

Therefore, even if the non-telephone type facsimile data conversion connection device 13 is connected to the facsimile communication network, the information center 1 is connected via the toll exchange 1.
4 and the facsimile terminals 7 to 10 become possible.

In the above embodiments, a facsimile communication network has been described, but the present invention is not limited to this and may be applied to other telephone communication networks.

〔Effect of the invention〕

As explained above, according to the communication route automatic management method of the present invention, for example, in a facsimile communication network, a common line signal relay control device is provided in a toll exchange, and a connection request for facsimile communication is made when the facsimile communication network is expanded. is identified and re-edited by the common line signal relay device to correspond to the appropriate toll exchange. Therefore, the common line station code information in the common line route translation device must be changed at all toll exchanges in the facsimile communication network. This method has the advantage of being convenient since it eliminates the difficulty of performing the connection change at the same time.

Moreover, according to the present invention, it is possible to use a non-telephone type facsimile data conversion device that does not have a common line route translation device into a facsimile communication network, and furthermore, a new toll exchange can be added to the facsimile communication network. In this case, there is no need to change the information of all toll exchanges at the same time, and it is only necessary to change the information of at least one toll exchange.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional example of a facsimile communication network, and FIG. 2 is a block diagram of an example of a facsimile communication network to which an embodiment of the automatic communication route management system according to the present invention is applied. 1, 2...Toll exchange, 1a, 2a...Network, 1b, 2b...Central control unit, 1c, 2
c... Common line route translation device, 1e, 2e, 1
f, 2f...Common line signal path, 1g, 2g...Common line signal relay control device, 3-6...Toll exchange, 7
~10...Facsimile terminal, 11, 12...Facsimile storage and conversion device, 13...Facsimile data conversion and connection device, 14...Information center.

Claims (1)

[Claims] 1. In a communication system consisting of a facsimile terminal, a local exchange, a toll exchange, a facsimile storage and conversion device, a facsimile data conversion and connection device, and an information center, it is determined whether the common line signal received by the toll exchange is a signal to be relayed. In the case of a signal to be relayed, a second identification part that identifies whether the signal is a local toll exchange processed signal or another toll exchange processed signal; In the case of a signal, the station code in the common line signal is used to request that the response signal for the common line signal be directly returned from the relay-connected toll exchange to the requesting toll exchange or the facsimile data exchange connection device. A common line signal relay control device having a re-editing unit for re-editing the common line signal to be rewritten to the office code of the original toll exchange or the facsimile data exchange connection device is provided; A common line signal for verifying the incoming terminal received from the toll exchange of In the case of a signal processed by a central toll exchange, automatic management of communication routes characterized by re-editing the station code of the common line signal and relaying the common line signal to the corresponding multi-station toll exchange. method.