JPH03280691A - Telephone system - Google Patents

Abstract

PURPOSE:To transfer FAX data of a G4 mode to lots of G3 facsimile terminal equipments via a trunk line by accommodating a G3/G4 mode conversion FAX (facsimile) adaptor as one of extensions and receiving a G4 FAX date through the adaptor. CONSTITUTION:A mode conversion facsimile(FAX) adaptor 21 is connected to one of extensions of a master set 10 and a G4 FAX data sent via an ISDN (integrated service digital network) 2 is converted into a G3 mode FAX data by the adaptor 21. Moreover, in the case of receiving the G4 FAX signal, when included terminal designation information is information corresponding to a telephone number of other subscriber, the information corresponding to the relevant telephone number is stored tentatively to a storage section of the adaptor 2. Then a trunk line is acquired based on the information and automatic dialing is implemented and the converted FAX data is transferred while awaiting the connection with the other party. Thus, the G4FAX data is transferred to desired G3FAX terminal equipments 22, 23.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to telephone devices such as PBXs and key telephone devices, and particularly relates to transmission from a G4 facsimile connected to an ISDN (Integrated Digital Network) to an existing 63 facsimile.

[Conventional technology]

BACKGROUND OF THE INVENTION Facsimile communication using existing analog telephone communication networks is widely used, and 63 mode machines are generally used as terminals for facsimile communication. On the other hand, perhaps because the ISDN is gradually spreading, the facsimile machines connected to this digital communication network are G4 mode machines, which are different from the existing 63 mode machines which are analog machines, and are not directly connected to facsimile machines. cannot be done. By the way, G4 facsimile has the advantage that communication time is shorter than G3 facsimile and transmission can be performed at a lower cost, but on the other hand, it has the disadvantage that the device itself is expensive. One problem is that the 04 facsimile terminal is expensive, and the other is that it cannot communicate with the existing 63 facsimile terminal, which has been widely used as described above. Therefore, conventionally, when connecting the line to the ISDN network and receiving communications from G4 facsimile terminals, G3 mode and G4
A G3/G4 mode conversion facsimile adapter that performs mutual mode conversion is connected to each 63 facsimile terminal to solve the above-mentioned drawbacks.

[Problem to be solved by the invention]

However, the method of providing a remote conversion facsimile adapter for each of the existing 63 facsimile terminals as described above is too expensive because it is necessary to provide an adapter for each terminal even when multiple G3 facsimile terminals are provided. There are some drawbacks. For example, if a G4 facsimile terminal is installed at the company's head office and facsimile communication is performed with branch offices each equipped with a G3 facsimile terminal,
It is necessary to provide the adapter for each of the existing 03 facsimile terminals in each branch office, which also poses a problem of requiring a large amount of cost. The present invention aims to provide a telephone device that can improve this drawback.

[Means to solve the problem]

This invention provides a method for transmitting facsimile data to the extension line side of the switching equipment section in a telephone device connected to a line connected to an ISDN network on the central line side of a switching equipment section having a switching section and a control section.
identification means for connecting a mode conversion facsimile adapter for converting from G3 mode to G3 mode, and for identifying terminal designation information included in information when 04 mode facsimile information is received from a line connected to the ISDN network; When the terminal designation information identified by the identification means is information corresponding to another subscriber's telephone number, information corresponding to the telephone number according to this information is stored in a storage section provided in the mode conversion facsimile adapter. means for receiving information corresponding to the telephone number from a storage section of the mode conversion facsimile adapter, capturing a central office line, and automatically dialing the telephone number corresponding to the information; The present invention is characterized by comprising means for transmitting the facsimile information converted into the 63 mode by the above-described method to the captured central office line. Further, the present invention provides a method for identifying a telephone number corresponding to the telephone number of another subscriber based on the terminal designation information when the terminal designation information identified by the identification means is information corresponding to the telephone number of another subscriber. storage means for storing information in a storage section provided in the mode conversion facsimile adapter by adding a central office line transmission identification code to the beginning of the information; and automatically dialing the telephone number of the subscriber based on information corresponding to the telephone number.

[Effect]

In the case of this invention, the mode conversion facsimile adapter is
The line connected to the ISDN network is connected as one of the extensions of the telephone device to which it is connected. G4 facsimile data sent via the ISDN network connected to this telephone device is converted into 63 mode facsimile data by the mode conversion facsimile adapter. In addition, when receiving a 64 facsimile call from a line connected to the ISDN network, if the terminal designation information included in the information at the time of receiving the call, such as a subaddress, corresponds to another subscriber's telephone number, Information corresponding to the telephone number received is temporarily stored in the storage section of the adapter. The information corresponding to this telephone number may be the subscriber's telephone number itself, or may be an abbreviated number or the like. In addition, when storing the telephone information in the memory section of this adapter, a central office line calling identification code (for example, in the case of a telephone device that calls a central office line by calling "0", a central office line calling identification code (for example, "0") is added to the beginning of the telephone information. You can make it memorable. Then, based on the information corresponding to the telephone number stored in this adapter, the telephone device performs central office line acquisition and automatic dialing, waits for connection with the other party, and then transfers the converted facsimile data to the other party. In this case, if the central office line transmission identification code is at the beginning of the stored information, the central office line acquisition operation is performed based on this code. As described above, with one adapter, ISDN
Converts G4 facsimile data sent through the network to G3 mode and sends it to the desired G3 connected to the existing analog telephone network.
It can be forwarded to a fax terminal.

【Example】

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a telephone device according to the present invention will be described below with reference to the drawings, taking the case of a button telephone device as an example. In FIG. 1, ]0 is the main device as a switching device section,
This main device 10 is equipped with an exchange section 11 and a control device 12 equipped with a microcomputer.
The controller 12 performs exchange control and the like. A line 3 connected to the ISDN network 2 is connected to the central office line side of the switching section 11 via an ISDN central line interface 13 . In this example, a G4 facsimile terminal 1 (hereinafter, facsimile will be abbreviated as FAX) is connected to the ISDN network 2. The central office line side of the switching section 11 is also connected via lines connected to the existing analog telephone network 8, two lines 5.7 in the example shown, or analog central office line interfaces 17 and 18. . In the example shown, the existing analog telephone network 8
A G3 FAX terminal 4.6 is connected to each. Furthermore, through the line 3 connected to the ISDN network 2,
It is well known that facsimile data can be communicated between the 03 FAX terminal connected to the existing analog telephone network 8 and the telephone device of this example. On the extension side of the exchange section 11, there are a plurality of G units, for example two G units in the figure.
3 FAX terminals 22 and 23 are connected as one of the extensions (each having a predetermined extension number) via analog extension interfaces 15 and 16, and perform mutual mode conversion between G3 mode and G4 mode.
One of the G3/G4 mode conversion FAX adapters 21 is connected via the ISDN extension interface 14 as one of the extensions. This mode conversion FAX adapter 21
has a memory including a FAX data storage section and a number information storage section such as an extension number or a forwarding destination telephone number, and
It has a CPU. In this example, the memory is capable of storing, for example, three pieces of FAX data and number information. The control device 12 supplies control signals to the ISDN office line interface 13 and analog office line interface 17.18, and also provides control signals via these office line interfaces 13, 17, and 1.8.

[7] Information is exchanged with lines 3 and 5.7. The controller 12 also supplies control signals to each extension interface 14-16, and
The controller 12 and the adapter 21 . G3 FAX terminal 22゜23
Sends and receives various data to and from the In the apparatus shown in FIG. 1, FAX from G4FAX terminal 1 is
A case where an AX call is received will be explained below. In this case, the incoming call information from the G4 FAX terminal 1 includes terminal designation information. In the case of ISDN, the terminal can be specified using a method using a called number (DD1 function) or a method using a subaddress added after the called number. In this invention, either terminal designation method can be adopted, but in this example, a method using a subaddress will be taken as an example. In this case, when sending FAX data from the G4 FAX terminal 1, if the call is to be received at the G3 FAX terminal of the extension of the telephone device in this example, the extension number is sent as a subaddress. Furthermore, when it is desired to transfer FAX data to another party on the outside line of the telephone device, the telephone number of the party to which the data is to be transferred is sent as a subaddress. When a FAX call is received, as shown in the flowchart of FIG.
It is determined whether it is X or not (step 101). This determination is made by referring to the part of the incoming call information that specifies the information transfer capability. As a result of this determination, if it is determined that there is no G4FAX,
The process moves on to the procedure for receiving an incoming 3FAX call. In addition, when it is determined that it is a G4 FAX, the main device 1
The control device 12 of No. 0 extracts a subaddress, which is terminal designation information, from the incoming call information (step 102). next,
The control device 12 determines whether this subaddress is an extension number or an external telephone number (step 103).
). For example, if the extension number is a 4-digit number,
If it is an outside line telephone number, it is a number of 5 or more digits, so this is done depending on whether the number of digits of the subaddress is 5 or more. If it is determined in step 103 that the sub-address is an extension number, the process jumps to step 105, and the control device 12 transmits information on the extension number indicated by the sub-address to the mode conversion FAX adapter 21, and the adapter 21 performs the following steps. This extension number is stored in the number storage section of the memory provided in this adapter 21. If it is determined in step 103 that the sub-address is an outside line telephone number, the process proceeds to step 104, where the control device 12 sends a central office line calling identification code, for example "0", to the beginning of the telephone number indicated by the sub-address. , and sends the telephone number information to the mode conversion FAX adapter 21, which then stores the telephone number with rOJ added at the beginning in the number storage section of the memory provided in this adapter 21. (Step 105). Next, the control device 12 selects G4 of the data of ID5N.
The IDSN extension interface 14 is controlled to supply the B channel, which is FAX data, to the adapter 21 (step 106). The adapter 21 receives this G4 FAX data and sequentially stores it in the FAX data storage section corresponding to the number information storage section of the memory provided in the adapter 21 (step 107). Then, the data from the G4 FAX terminal 1 is accumulated to the end (steps 1.07, 108). Then, when the adapter 21 determines that communication with the G4 FAX terminal 1 has ended (step 108), the mode conversion F
The AX adapter 21 supplies a call request signal to the main device 10 (Step 109), and sends number information from the number storage section of the memory of the adapter 21 to the main device 10 (Step 1).
10). If the number information is an extension phone number, adapter 2
If an extension call is made from 1 and it is an external phone number, rO
Since J is added to the beginning, it is equivalent to a central office line call being made from the adapter 21. In response to this, the control device 12 of the main device 10 determines whether rOJ, which is a central office line origination identification code, is at the beginning of the number information (step 111). When the beginning is not "0" but an extension number, the control device 12 connects the adapter 21 and the 03 FAX terminal connected to the designated extension, for example, G
An internal line is formed with the 3FAX terminal 22 (step 112). Adapter 21 then retrieves 64 from memory.
The FAX data is read out, converted to G3 mode, and transmitted to the G3 FAX terminal 22 via the internal line (step 116). The G3 FAX terminal 22 receives this and prints it out on, for example, FAX paper. If it is determined in step 111 that the first number is "0", the control device 12 proceeds to step 113 and performs an office line capture operation, and then connects the telephone number sent from the adapter 21 to the captured line. Then, the automatic dialing operation is performed (step 114). Then, the other party's response is checked (step 115), and if the other party does not respond or is in communication and the line connection is not established, for example, after waiting a certain period of time, steps 109 and subsequent steps are repeated. and,
After confirming the line connection, the process proceeds to step 116, where the adapter 21 reads the G4 FAX data from the memory and transfers the G3
mode, and transmits it to the other party's G3 FAX terminal, for example, the G3 FAX terminal 4, via the captured line. Note that even if line 3 is captured as the central office line at the time of transfer, the telephone office selects the existing analog telephone network and uses the other party's G3F.
Since it is connected to an AX terminal, there is no problem. As described above, when transmitting G4FAX data from a G4FAX terminal, by sending the subscriber phone number of the other party to the subaddress, the FAX data is sent to 0 at the adapter 21.
3 mode and can be transferred to the other party's G3 FAX terminal. Therefore, with one mode conversion FAX adapter, it is possible to convert 64 mode FAX data from a G4 FAX terminal to 63 mode and transfer it to a G3 FAX terminal connected to an existing analog telephone network. In the above example, the adapter 21 is provided with a large-capacity memory to temporarily store all the FAX data sent from the G4 FAX terminal 1, and after the end of communication, the stored data is stored.
However, when the ISDN extension interface 14 supplies G4FAX data to the adapter 21, the other B channel is vacant, so the ISDN extension interface 14 uses this vacant B channel to send the data to the forwarding destination. 6
3FAX terminal and office line are formed, and adapter 21 is used to connect G4F.
Without converting the AX data to 63 mode, the other party's G3
By transferring the data to the FAX terminal, the FAX data can be received at the destination G3 FAX terminal without being stored in the adapter 21. However, if the adapter is equipped with a large-capacity memory as in the example above, and is able to store multiple faxes (for example, 3 faxes) of fax data and telephone number data, the other party's G3 fax terminal may be in communication at the time of transfer. When this happens, it is easy to redo the transfer. Moreover, even if another G4 FAX call is received while the transfer is being redone, it is possible to store it in the memory and transfer it. Note that the mode conversion adapter 21 converts from G3 mode to G4 mode.
It is also possible to convert to G3 FAX terminal 2 of the extension.
2 or 23 can perform FAX transmission to a G4 FAX terminal via the ISDN network 2 via the mode conversion adapter 21. In the above example, whether the number of digits in the subaddress is used to identify that the transfer destination is an external subscriber telephone number rather than an extension number, or, for example, whether the central office line is stored in the memory of the control device 11 of the main device 10 A memory table is prepared in which the subscriber telephone number of the other party to be transferred is stored in advance, and a match between the number in the memory table and the subaddress is detected to identify whether the transfer is via a central office line or not. You can also do it like this. In this case, FAX data can be transferred only to a specific destination registered in the storage table. In addition, in the above example, when making a call from G4FAX terminal 1,
I made it so that the phone number of the person I want to forward to is sent as a subaddress.
It may be an abbreviated number. In this case, a conversion table between the abbreviated number and the subscriber telephone number is prepared in the control device 11 of the main device 1o of the telephone device. In this case, the number information stored in the number storage section of the adapter's memory starts with "
It may be the telephone number itself with "0" added, or an abbreviated number may be stored. Note that it is also advisable to add a central office line calling identification code such as "0" to the beginning of the telephone number in the conversion table. Furthermore, in the above example, when sending the number information to the number storage section of the memory of the adapter 21, the main device 10 performs an operation to add the central line calling identification code based on the number of digits of the subaddress. When reading the number from the number storage section of the adapter 21 and sending it to the main device, the adapter 21 determines, for example, the number of digits of the number information, and based on this, when transferring via a central office line, the central line transmission identification code is may be added to the beginning and sent to the main device. Furthermore, a specific key code (for example, #555, etc.) is determined when transferring via a central office line, and when a call is made from a G4 FAX terminal, this is sent to the beginning of the subaddress, and then as a subaddress to the other party. The information corresponding to the destination phone number (telephone number or abbreviated number) is sent to the main device 10.
The key code may be transferred via the central office line only when this key code is sent. In this case, only those who know the key code in advance can perform the transfer. Note that the above example describes the case where the present invention is applied to a key telephone device, but in the case of a PBX, by using one common adapter for multiple G3 FAX terminals in exactly the same way, It is possible to transmit and receive data to and from G4 FAX terminals via the ISDN network. Effects of the Invention As explained above, according to the present invention, the G3/G4 mode conversion FAX adapter is accommodated as one of the extensions,
When G4 FAX data is received through the ISDN network, by passing it through this adapter, G4 mode FAX data can be converted to G3 mode and sent to multiple G3 FAX terminals connected to the existing analog telephone network via the central office line. It is possible to transfer via. That is, a large number of 63
One adapter can be shared for FAX terminals. Therefore, without purchasing a new expensive G4 FAX terminal, you can use multiple existing 03 FAX terminals by simply purchasing one G3/G4 mode conversion adapter.
Fax between 04FAX terminal connected to SDN network
Transmission and reception are possible, making low-cost communication possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment in which a telephone device according to the present invention is applied to a button telephone device, and FIG.
4 is a flowchart when transferring from a G3 FAX terminal to a G3 FAX terminal. 1.64 FAX terminal 2, ISDN network 3.5, 7. Line 8; Existing analog telephone network 10; Main device 11; Exchange control device 21; G3/G4 mode conversion FAX adapter 4゜6; FAX terminal

Claims (2)

[Claims] (1) On the central line side of the switching equipment section, which has a switching section and a control section,
In a telephone device to which a line connected to the ISDN network is connected, facsimile data is sent to the extension side of the switching equipment section using G4.
identification means to which a mode conversion facsimile adapter for converting from mode to G3 mode is connected, and for identifying terminal designation information included in information when facsimile information in G4 mode is received from a line connected to the ISDN network; When the terminal designation information identified by the identification means is information corresponding to another subscriber's telephone number, information corresponding to the telephone number according to this information is stored in a storage section provided in the mode conversion facsimile adapter. means for receiving information corresponding to the telephone number from a storage section of the mode conversion facsimile adapter, capturing a central office line, and automatically dialing the telephone number corresponding to the information; and means for transmitting the facsimile information converted into the G3 mode by the acquired telephone line to the captured central office line. (2) When the terminal designation information identified by the identification means is information corresponding to another subscriber's telephone number, based on this terminal designation information, the information corresponding to the telephone number of that subscriber is storage means for adding a central office line calling identification code to the beginning of the code and storing it in a storage section provided in the mode conversion facsimile adapter; capturing a central office line based on the central office line calling identification code from the storage section; 2. The telephone device according to claim 1, further comprising means for automatically dialing the subscriber's telephone number based on information corresponding to the telephone number.