JP3050948B2 - Electronic exchange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic exchange for connecting, for example, a standard telephone terminal to an analog line or an ISDN terminal to an ISDN line.

[0002]

2. Description of the Related Art In recent years, as an electronic exchange such as a private branch exchange, not only is it possible to connect an analog terminal such as a standard telephone and an analog line network as an analog communication network, but also to carry out data communication and conventional voice communication. Terminal (ISDN Terminal) and IS as Digital Communication Network
A network for connecting to a DN network (combined service digital network) has been developed. In such an electronic exchange, 1
In response to one line transmission operation, one vacant line is captured by bypassing a group of busy lines in a predetermined order.

For example, an attempt is made to make an outgoing connection from an ISDN terminal to an analog line for data communication with an analog terminal connected to the analog line network. If the connection is bypassed to the line, the exchange does not perform any protocol conversion as an ISDN terminal-to-ISDN network, regardless of whether the connection partner is an analog terminal. There is a disadvantage in that the data cannot be connected due to a difference in data type in the middle of the ISDN network versus the analog network.

[0004] Therefore, when data from an ISDN terminal or a data terminal is to be transmitted to a terminal connected to an analog network, the data cannot be transmitted if the data is bypassed via the ISDN network. There was a disadvantage.

[0005]

In a conventional electronic exchange, when data is to be transmitted from an ISDN terminal or a data terminal to a terminal connected to an analog network, a bypass connection is made via the ISDN network. However, there is a disadvantage that data cannot be transmitted. The present invention eliminates the above-mentioned disadvantages, and allows a terminal to select an arbitrary line network regardless of its attributes.
When data is transmitted from a DN terminal or a data terminal to a terminal connected to an analog network, an IS
It is an object of the present invention to provide an electronic exchange capable of transmitting data even when a detour connection is made by selecting a DN network. The present invention also provides a method of transmitting data from an ISDN terminal or a data terminal to a terminal connected to an analog network even when the analog network is unavailable. It is an object of the present invention to provide an electronic exchange capable of performing the following. Further, according to the present invention, when the protocol of the data from the ISDN terminal or the data terminal is converted by using the converting means and the data is transmitted to the receiving terminal connected to the analog network, the converting means cannot be used. It is an object of the present invention to provide an electronic exchange capable of notifying the ISDN terminal or the data terminal that connection is impossible in the state.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an electronic exchange for accommodating a plurality of line networks of different types and connecting terminals having attributes corresponding to these line networks to the line networks. Line selection means for selecting a line network connecting this terminal from the plurality of line networks,
Conversion means for converting a protocol of data from the terminal;
When the terminal is an ISDN terminal or a data terminal, the attribute of which corresponds to the ISDN network, and this terminal attempts to transmit data to a receiving terminal connected to the analog network, the line selecting means switches the ISDN network. In the case of selecting and connecting to the receiving terminal alternately, after converting the data protocol by the converting means, the protocol-converted data is converted into the ISDN network selected by the line selecting means and the analog network to which the receiving terminal is connected. And transmitting means for transmitting to the receiving terminal via Also, the present invention provides an electronic exchange that accommodates a plurality of circuit networks of different types from each other and connects terminals having attributes corresponding to these circuit networks to the circuit networks. Line selecting means for selecting a line network to be selected from the plurality of line networks, and a line selecting means for selecting another line network when a line network corresponding to the request cannot be used, and a converting means for converting a protocol of data from the terminal. And the terminal is an ISDN terminal or a data terminal, the attribute of which corresponds to the ISDN network,
When this terminal tries to transmit data to the receiving terminal connected to the analog network and the line selecting means selects the ISDN network and is connected to the receiving terminal by a bypass, the data protocol is converted to the converting means. After the conversion, the protocol-converted data is converted to the ISD
It comprises an N-line network and transmitting means for transmitting to the receiving terminal via an analog network to which the receiving terminal is connected. Further, in the present invention, when the transmitting means converts the protocol of the data from the ISDN terminal or the data terminal using the converting means, if the converting means cannot be used, the connection to the ISDN terminal or the data terminal is established. It is characterized by having a notifying means for notifying that it is impossible.

[0007]

According to the present invention, when an ISDN terminal or a data terminal attempts to transmit data to a receiving terminal connected to an analog network, an ISDN network is selected according to the request of the terminal. When a bypass connection is made to the receiving terminal, the protocol of the data is converted, and then the protocol-converted data is transmitted to the receiving terminal via the ISDN network and the analog network to which the receiving terminal is connected. It was made. Further, according to the present invention, when data is transmitted from an ISDN terminal or a data terminal to a terminal connected to the analog network, if the analog network cannot be used, the ISD terminal is used instead.
The N-line network is selected and bypass-connected to the receiving terminal, the data protocol is converted, and the data is transmitted to the receiving terminal via the ISDN network and the analog network to which the receiving terminal is connected. It is. Further, in the present invention,
If the protocol of the data from the ISDN terminal or the data terminal is converted by using the converting means and the data is transmitted to the receiving terminal connected to the analog network, the converting means cannot be used. This notifies the ISDN terminal or the data terminal that connection is impossible.

[0008]

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

FIG. 1 shows an example of the configuration of an electronic exchange system according to the present invention. That is, 1 is the exchange body,
2, ... are standard telephone terminals connected to the exchange body 1, 3,
Are ISDN terminals (for example, G4 type facsimile) connected to the exchange body 1, 4 are data terminals connected to the exchange body 1, 5, ... are analog lines as communication lines connected to the exchange body 1, 6 , ... is the exchange body 1
Are protocol conversion units connected to the exchange main unit 1. Are connected to an analog network 20, the ISDN lines 6,... Are connected to an ISDN network 21, and the analog network 20 and the ISDN network 21 are connected.

The protocol converters 7,...
It comprises a protocol converter 7a for converting a protocol for the DN line (ISDN signal) to a protocol for the analog line (voice data) and a modem 7b.

A standard telephone terminal 2,...
Terminal control circuits 8a,..., 8 connected to ISDN terminals 3,.
b, 8c, transmission line selection control unit 9, line selection order data storage unit 10, analog line 5,..., ISDN line 6,.
, 11b,... For performing protocol conversion and a protocol control unit 12 connected to the protocol conversion units 7,.

The terminal control circuits 8a,...
When a dial signal is supplied from..., Subscriber data is added to the dial data and the calling line selection control unit 9
Output to

The terminal control circuit 8b outputs dial data from the ISDN terminals 3,..., Subscriber data including transmission capability data and caller data to the transmission line selection controller 9.

When a dial signal is supplied from the data terminal 4, the terminal control circuit 8 c adds subscriber data including transmission capability data and caller data to the dial data and outputs the data to the calling line selection control unit 9. Is what you do.

The outgoing line selection control unit 9 includes a terminal control circuit 8
a,..., based on the subscriber data added to the dial signal from the terminal control circuit 8b and the terminal control circuit 8c, whether the originating terminal is the standard telephone terminal 2,..., the ISDN terminal 3,. The line selection order data read out from the line selection order data storage unit 10 by the selected line group number according to this determination result,
.. Or the ISDN lines 6,. The line selection order data storage unit 10 stores line selection order data according to a line group number.

The line selection order data is, for example, as shown in FIG.
, The line group numbers “1”, “2”,... Are sequentially stored for the line transmission special number “0”, and the line group numbers “2”, “ .. Are sequentially stored, the line group number "1" corresponds to the analog line 5,..., And the line group number "2" corresponds to the ISDN line 6,. The protocol control unit 12 includes a memory 12a that stores the usage status of the protocol conversion units 7,...

Next, the operation in such a configuration will be described. For example, now, the standard telephone terminal 2 is off-hook by the user, and the destination to be connected is a standard telephone terminal (not shown) connected to the analog network 20, so that the line calling special number "0" is dialed. Then, the line transmission special number “0” from the standard telephone terminal 2 is output to the transmission line selection control unit 9 via the terminal control circuit 8a.
As a result, the transmission line selection control unit 9 reads the line selection order data corresponding to the line transmission special number “0” from the line selection order data storage unit 10. That is, line group number 1,
The line selection order data in the order of 2,... Is read. Therefore, the transmission line selection control section 9 selects the analog line 5,..., And connects the standard telephone terminal 2 to the idle line in the analog line 5,.

Thereafter, in response to an instruction from the standard telephone terminal 2, the terminal is connected to a standard telephone terminal (not shown) via the analog line 5 and the analog line network 20, and voice data from the standard telephone terminal 2 is transmitted to the terminal. The control circuit 8a, the transmission line selection control unit 9, the line control circuit 11a, the analog line 5, and the analog line 5 are output to a standard telephone terminal (not shown) via the analog network 20, and the standard telephone terminal (not shown). (Not shown) from the analog network 2
0, analog line 5, line control circuit 11a, transmission line selection control unit 9, and standard telephone terminal 2 via terminal control circuit 8a.
Supplied to

If there is no free line in the analog lines 5, the outgoing line selection control unit 9 selects the ISDN lines 6,... And the free lines in the ISDN lines 6,. And connect.

Thereafter, in accordance with an instruction from the standard telephone terminal 2, the standard telephone terminal 2 (not shown) is connected via the ISDN line 6, the ISDN line network 21, and the analog line network 20. Is transmitted to a destination standard telephone terminal (not shown) via the terminal control circuit 8a, the transmission line selection control unit 9, the line control circuit 11b, the ISDN line 6, the ISDN line network 21, and the analog line network 20. The voice data output from the other party's standard telephone terminal (not shown) is output to the analog network 20, ISD
N network 21, ISDN line 6, line control circuit 11b,
The signal is supplied to the standard telephone terminal 2 via the transmission line selection control unit 9 and the terminal control circuit 8a.

A user inputs a data output instruction from the ISDN terminal 3 and dials a line transmission special number "0" when the connection destination is a terminal connected to the analog network 20. Then, the data in which the transmission capability data as the subscriber data and the sender data are added to the line transmission special number “0” are output from the ISDN terminal 3 to the transmission line selection controller 9 via the terminal control circuit 8b. . As a result, the calling line selection control unit 9 determines that the calling terminal is in accordance with the subscriber data given to the dial signal.
It is determined that it is the DN terminal 3. Further, the transmission line selection control unit 9 reads out the line selection order data corresponding to the line transmission special number “0” from the line selection order data storage unit 10. That is, the line selection order data in the order of line group numbers 1, 2,... Is read. Therefore, the transmission line selection control unit 9 selects the analog line 5,... And connects the idle line in the analog line 5,.

Thereafter, in accordance with an instruction from the ISDN terminal 3, the terminal is connected to a terminal (not shown) via the analog line 5 and the analog line network 20. And ISDN
Data from the terminal 3 is supplied to the transmission line selection control unit 9 via the terminal control circuit 8b. Then, the transmission line selection control unit 9 first determines whether there is a usable protocol conversion unit 7 based on the stored contents of the memory 12a in the protocol control unit 12, and when there is no usable protocol conversion unit 7,
Inform the ISDN terminal 3 that connection is impossible. When there is a usable protocol converter 7, the transmission line selection controller 9 converts the data (ISDN signal) from the ISDN terminal 3 into voice data by the protocol converter 7 and outputs the voice data to the line control circuit 11a. . This audio data is converted into an analog signal by the line control circuit 11a, and then output to the destination terminal (not shown) via the analog line 5 and the analog line network 20.

When there is no free line in the analog lines 5,..., The outgoing line selection control unit 9 selects the ISDN lines 6,. Connect.

Thereafter, in accordance with an instruction from the ISDN terminal 3, the terminal is connected to a terminal (not shown) via the ISDN line 6, the ISDN line network 21, and the analog line network 20. Then, data from the ISDN terminal 3 is supplied to the transmission line selection control unit 9 via the terminal control circuit 8b. Then, the outgoing line selection control unit 9 first determines whether there is a usable protocol conversion unit 7 based on the stored contents of the memory 12a in the protocol control unit 12, and if there is no usable protocol conversion unit 7, the ISDN terminal Notify 3 that connection is not possible. If there is a usable protocol converter 7, the transmission line selection controller 9 converts the data (ISDN signal) from the ISDN terminal 3 into a protocol converter 7.
Then, the data is converted into audio data and output to the line control circuit 11b. This voice data is converted into a digital signal by the line control circuit 11b,
The signal is transmitted to the network 21, then converted into an analog signal, and output via the analog network 20 to a terminal (not shown) of the other party. At this time, since the attribute of the data is converted from the ISDN signal to the voice data, the data can be transmitted to the analog network 20.

Further, a user inputs a data output instruction from the ISDN terminal 3 and, when the other party to be connected is a terminal connected to the digital network 21, dials the line transmission special number “9”. Then, the data in which the transmission capability data as the subscriber data and the sender data are added to the line transmission special number "9" are output from the ISDN terminal 3 to the transmission line selection controller 9 via the terminal control circuit 8b. . As a result, the calling line selection control unit 9 determines that the calling side terminal is on the basis of the subscriber data added to the dial signal.
It is determined that the terminal is the SDN terminal 3. Also, the transmission line selection control unit 9 reads out the line selection order data corresponding to the line transmission special number “9” from the line selection order data storage unit 10.
That is, the line selection order data having the order of line group numbers 2, 1,... Is read. Therefore, the transmission line selection control unit 9 selects the ISDN lines 6,.
The idle lines in the SDN lines 6 are connected to the ISDN terminal 3.

Thereafter, in response to an instruction from the ISDN terminal 3, the terminal is connected to a destination terminal (not shown) via the ISDN line 6 and the ISDN line network 21. Line selection control unit 9,
Line control circuit 11b, ISDN line 6, and ISDN
The data is output to a destination terminal (not shown) via the network 21.

If there is no free line in the ISDN lines 6,..., The outgoing line selection control section 9 selects the analog line 5,. Connect.

Thereafter, in accordance with an instruction from the ISDN terminal 3, the terminal is connected to a terminal (not shown) via the analog line 5 and the analog line network 20. And I
Data from the SDN terminal 3 is output to a destination terminal (not shown) via the terminal control circuit 8b, the transmission line selection control unit 9, the line control circuit 11a, the analog line 5, and the analog line network 20.

Further, a user inputs a data output instruction from the ISDN terminal 3 and the destination to be connected is I
In the case of a terminal connected to the SDN network 21, a line transmission special number "9" is dialed. Then, transmission capability data and subscriber data as subscriber data are added to the line transmission special number "9", and output from the ISDN terminal 3 to the transmission line selection control unit 9 via the terminal control circuit 8b.
Thus, the transmission line selection control unit 9 determines that the calling terminal is the ISDN terminal 3 based on the subscriber data added to the dial signal. In addition, the transmission line selection control unit 9
Reads the line selection order data corresponding to the line transmission special number "9" from the line selection order data storage unit 10. That is,
The line selection order data having the order of the line group numbers 2, 1,... Is read. Therefore, the transmission line selection control unit 9 selects the ISDN lines 6,..., And connects the idle lines in the ISDN lines 6,.

Thereafter, in accordance with an instruction from the ISDN terminal 3, the terminal is connected to a destination terminal (not shown) via the ISDN line 6 and the ISDN line network 21, and data from the ISDN terminal 3 is transmitted to the terminal control circuit 8b and transmitted to Line selection control unit 9,
Line control circuit 11b, ISDN line 6, and ISDN
The data is output to a destination terminal (not shown) via the network 21.

At this time, if there is no free line in the ISDN lines 6,..., The outgoing line selection control unit 9 selects another line group, and the free line in the line group and the ISDN terminal 3
And connect.

When the user inputs a data output instruction from the data terminal 4, the operation is the same as in the case of the ISDN terminal 3. However, the transmission capability data and the sender data as the subscriber data are provided by the terminal control circuit 8c. As mentioned above, I
Data from SDN terminal or data terminal is ISD
When the data is output to a terminal connected to the analog network via the N network and the analog network, the data is converted into voice data and then output to the ISDN line. Thus, when data from an ISDN terminal or a data terminal is to be transmitted to a terminal connected to an analog network, the data can be transmitted even if the connection is made via the ISDN network.

[0033]

As described above in detail, according to the present invention, an arbitrary network can be selected from a terminal regardless of its attributes, and data from an ISDN terminal or a data terminal is connected to an analog network. An electronic exchange capable of transmitting data even when an ISDN line network is selected and a detour connection is made when attempting to transmit to a terminal that is in use. The present invention also provides a method of transmitting data from an ISDN terminal or a data terminal to a terminal connected to an analog network even when the analog network is unavailable. An electronic exchange capable of performing such operations can be provided. Further, according to the present invention, when the protocol of the data from the ISDN terminal or the data terminal is converted by using the converting means and the data is transmitted to the receiving terminal connected to the analog network, the converting means cannot be used. When in the state,
It is possible to provide an electronic exchange capable of notifying the ISDN terminal or the data terminal that connection is impossible.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a main part of an electronic exchange according to the present invention.

FIG. 2 is an exemplary view for explaining a storage example of a line selection order data storage unit in FIG. 1;

[Explanation of symbols]

1: Switch body, 2-: standard telephone terminal, 3-: ISDN
Terminal, 4 Data terminal, 5 Analog line, 6 I
SDN line, 7 to protocol conversion unit, 7a protocol converter, 7b modem, 8a, to 8b, 8c terminal control circuit, 9 transmission line selection control unit, 10 line selection order data storage unit, 11a , 11b -... line control circuit, 1
2 ... protocol control unit, 12a ... memory, 20 ... analog network, 21 ... ISDN network.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Katsunori Yoshihara 70, Yanagimachi, Yuki-ku, Kawasaki-shi, Kanagawa Prefecture Inside the Toshiba Yanagimachi Plant (72) Inventor Jun Hirai 70, Yanagicho, Yuki-ku, Kawasaki-shi, Kanagawa Toshiba Corporation Inside the Yanagimachi Plant (72) Inventor Masakazu Shirakawa 70, Yanagimachi, Saiwai-ku, Kawasaki City, Kanagawa Prefecture Inside the Toshiba Yanagimachi Plant (72) Inventor Toshio Murai 70, Yanagimachi, Saiwai-ku, Kawasaki City, Kanagawa Prefecture Inside the Toshiba Yanagicho Plant (56) References JP-A-64-32563 (JP, A) JP-A-3-117060 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 3/00 H04M 3 / 16-3/20 H04M 3/38-3/40 H04M 7/00-7/16 H04Q 3/58-3/62

Claims (3)

(57) [Claims] An electronic exchange for accommodating a plurality of line networks of different types and connecting terminals having attributes corresponding to these line networks to said line network, wherein said terminal is connected to said terminal in response to a request from said terminal. Line selecting means for selecting a line network to be connected from the plurality of line networks; converting means for converting a protocol of data from the terminal; and the terminal is an ISDN terminal or a data terminal, and the attribute of the terminal is an ISDN line network. Correspondingly, when this terminal attempts to transmit data to a receiving terminal connected to an analog network, the line selecting means selects an ISDN network and makes a detour connection to the receiving terminal. After the protocol is converted by the conversion means, the protocol-converted data is converted to the ISD selected by the line selection means.
An electronic exchange comprising: an N-line network; and transmission means for transmitting to the receiving terminal via an analog network to which the receiving terminal is connected. 2. An electronic exchange for accommodating a plurality of circuit networks of different types from each other and connecting a terminal having an attribute corresponding to the circuit network to the circuit network. When a line network to be connected is selected from the plurality of line networks, and a line network corresponding to the request cannot be used, a line selecting means for selecting another line network, and converting a protocol of data from the terminal. A conversion means, when the terminal is an ISDN terminal or a data terminal, the attribute of which corresponds to an ISDN network, and when this terminal attempts to transmit data to a receiving terminal connected to an analog network, When the means selects an ISDN line network and is bypass-connected to the receiving terminal, the protocol of the data is converted by the converting means, and then the protocol-converted data is converted. Data is selected by the line selection means.
An electronic exchange comprising: a DN line network; and transmission means for transmitting to the receiving terminal via an analog network to which the receiving terminal is connected. 3. When the transmitting means converts the protocol of data from the ISDN terminal or the data terminal using the converting means, if the converting means cannot be used, the transmitting means transmits the data to the ISDN terminal or the data terminal. 3. The electronic exchange according to claim 1, further comprising a notification unit that notifies that connection is impossible.