JP3410073B2 - Telephone exchange and caller ID information transmission method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange device capable of making a call to an ISDN network for verifying caller number information and a method for sending caller number information.

[0002]

2. Description of the Related Art Conventionally, there is "caller number notification" as a service provided by an ISDN network, and this service provides the caller's telephone number information (hereinafter referred to as "caller number information") to the called party.
Say. ) Is displayed, the caller ID is displayed on the display of the receiving phone, which allows the called party to judge whether or not a response is required, and the call back function to call the called party back from the called party. It is for making it possible to utilize.

A conventional telephone exchange apparatus is disclosed in Japanese Patent Laid-Open No. 11-88.
As disclosed in Japanese Laid-Open Patent Publication No. 924, it is possible to connect to the ISDN network that provides this "caller ID notification" service, but it is possible to send caller ID information.
I was able to connect the SDN phone to the extension. Now,
In the conventional telephone exchange apparatus having such a connection form, when the extension ISDN telephone makes a call request to the ISDN network, the caller number information received from the ISDN telephone is directly transmitted to the ISDN network, When a call origination request is made to another ISDN network via one ISDN network, the caller number information received from the one ISDN network is transmitted as it is to the other ISDN network of the callee.

However, depending on the type of ISDN network, depending on the specifications, when the caller ID information is sent from the telephone exchange device of the sender, see the contents (hereinafter referred to as "verification").
Say. ) If the caller number is different from the caller number registered at the time of subscription, the call was forcibly cut off because the caller number information was not allowed. Therefore, if there is a call from such an ISDN network from an ISDN telephone that has a caller ID that is not registered at the time of subscription, or if there is a call from another ISDN network Since the station line will be disconnected in
Each time, the user of the originating ISDN telephone terminal had to take measures such as redialing using another ISDN network, which was very troublesome.

[0005]

As described above, in the conventional telephone exchange device, when a call is requested from an ISDN telephone having a caller number different from the caller number registered at the time of subscription, or another ISDN. When a call was requested via the network, the station line was forcibly disconnected by the ISDN network of the call destination.

Therefore, an object of the present invention is to verify the sender number information when a call is requested from an ISDN telephone connected to an extension or when a call is requested via another ISDN network. Another object of the present invention is to provide a telephone exchange device and a method of transmitting caller ID information, which can prevent the office line from being disconnected by the ISDN network of the transmission destination.

[0007]

In order to achieve the above object, the telephone exchange apparatus of the present invention is provided with an ISD connected to an extension line.
N telephones and multiple I's connected to different ISDN networks
In a telephone exchange device for switching connection with an SDN office line, a storage means for storing a caller number permitted for each ISDN network, and a network for specifying an ISDN network of a callee when a call is requested from the ISDN telephone. The identification means, the verification determination means for determining whether or not the ISDN network of the transmission destination specified by this network identification means verifies the sender number information, and the ISDN network of the transmission destination by this verification determination means When it is determined that the caller number information is to be verified, the caller number information is created from the caller number stored in the storage means and is sent to the ISDN network of the call destination. It is what

Further, the telephone exchange apparatus of the present invention is a telephone exchange apparatus for switching and connecting a plurality of ISDN office lines respectively connected to different ISDN networks, and storing means for storing a caller number permitted for each ISDN network. And when there is a call origination request from one of multiple ISDN networks, the other IS
Verification judging means for judging whether or not the DN network verifies the sender number information, and storage means when another ISDN network judges that the ISDN network verifies the sender number information. And sending means for creating calling party number information from the calling party number stored in and sending it to another ISDN network.

Next, the method of transmitting the calling party number information according to the present invention is different from the ISDN telephone connected to the extension.
In a method of transmitting caller ID information by a telephone switching device for switching and connecting a plurality of ISDN office lines connected to an SDN network, when a call is requested from an ISDN telephone, the ISDN network of the call destination is specified and specified. If the ISDN network determines whether or not to verify the sender number information, and the ISDN network at the destination determines to verify the sender number information, the ISDN network stored in advance is allowed. Caller ID information is created from the caller ID and the ISDN of the callee
It is characterized in that it is transmitted to the network.

Further, the method for transmitting the calling party number information of the present invention is a method for transmitting a plurality of ISDNs connected to different ISDN networks.
In a method of transmitting caller ID information by a telephone exchange device that connects and connects a central office line, when a call is requested from one of a plurality of ISDN networks, another ISDN network of the call destination verifies the caller ID information. When it is determined whether or not to perform the call, and when it is determined that the other ISDN network verifies the caller number information, the caller number information is created from the caller number permitted in the ISDN network stored in advance and other It is characterized in that it is transmitted to the ISDN network.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a telephone exchange device according to the present invention. The main device 1 which is a component of this telephone exchange device has a plurality of ISDN telephones 2 on the extension side.
-1 to 2-n, the analog telephone 3, and the digital key telephone 4 are connected. In addition, there are multiple ISDs on the station line
A plurality of ISDN network 6-1 in which a plurality of ISDN station line groups 5-1 to 5-m in which N station lines are respectively grouped are connected.
The transmission signal can be transmitted to each of 6 to 6-m, and the leased line 7 is connected to the leased line network 8 as well.
It is possible to send an outgoing signal to.

Each of the ISDN telephones 2-1 to 2-n is a digital telephone capable of transmitting caller number information by itself. ISDN telephones 2-1 to 2-n all have the same configuration, and among them, ISDN telephone 2
The external view of -1 is shown in FIG. The handset 21 is a handset having a transmitter and a receiver built-in. It is possible to listen to the voice from the other party through the handset and send the voice to the other party through the handset. Is something that can be done.

The display device 22 is an LCD (liquid crystal display device) having a two-stage display portion, and the current time, date, etc. are displayed during a normal call when no call is being made. Displays the call time. Also, when there is an incoming call from the ISDN central office line, the telephone number of the sender is displayed. The dial pad section 23 is for inputting numbers "0" to "9" and special characters "*" and "#" of the dial number.

The LED-equipped function key 24 is provided with a round LED corresponding to each of the plurality of rectangular function keys. Each function key is also called a one-touch key, and various function operations are started by simply pressing the key by being programmed beforehand. For example, in order to grab an extension, it is normal to use "*" from dial pad 23.
Where "1", "3" and "6" must be dialed, if the function key is preset as an extension call key, the extension can be grasped by pressing this key. In the case of the ISDN telephone 2-1 shown in FIG. 2, when the function key 24-1 is pressed, the extension number 300 can be grabbed, and when the function key 24-2 is pressed, the extension number 400 can be grabbed. .

Now, returning to the description of FIG. 1, the analog telephone 3 is a telephone that can be used by connecting to an analog line. Further, the digital key telephone 4 is a digital telephone which, unlike the ISDN telephones 2-1 to 2-n, cannot transmit the caller number information by itself, and an audio channel (not shown) with the main device 1. Signals can be sent and received on the control channel.

On the other hand, the ISDN office lines forming each of the ISDN office line groups 5-1 to 5-m on the office line side are digital lines capable of transmitting caller number information, and each ISDN network 6- 1 to 6-m. The leased line 7 is a dedicated line connected to another business office through the leased line network 8.

Next, the structure of the main unit 1 will be described.
The main device 1 includes a switching circuit 12, a plurality of ISDN line circuits 9-1 to 9-n, an analog line circuit 10, a digital line circuit 11, and a plurality of ISDN trunk circuit groups 12-1 to 12 including a plurality of ISDN trunk circuits. −
n, dedicated line trunk circuit 13, main control unit 14, storage unit 1
5, PCM highway 16 and data highway 17.

The switching circuit 12 is connected to each other or to the extension and the I.
It is used to exchange connection with SDN station line or dedicated line,
This is made possible by exchanging time slots (not shown) on the PCM highway 16. Multiple I
Each of the SDN line circuits 9-1 to 9-n includes an exchange circuit 1
2 and the ISDN telephones 2-1 to 2-n are interfaces for connecting the ISDN telephones 2-1 to 2-1.
Power supply to 2-n, incoming call response detection, outgoing call detection, etc. are performed.

The analog line circuit 10 includes a switching circuit 12
Is an interface for connecting the analog telephone 3 to the analog telephone 3, and performs power supply to the analog telephone 3, detection of incoming call response, detection of outgoing call, and the like. Digital line circuit 1
Reference numeral 1 denotes an interface for connecting the exchange circuit 12 and the digital button telephone 4 to supply power to the digital button telephone 4, detect incoming call response, and detect outgoing call.

ISDN trunk circuit group 12-1.
12-m is a group composed of a plurality of ISDN trunk circuits, respectively.
-1 is connected to the ISDN network 6-1 via the ISDN office line group 5-1 and the ISDN trunk circuit group 12
-2 is connected to the ISDN network 6-2 via the ISDN office line group 5-2, and similarly, the ISDN trunk circuit group 12-m is IS via the ISDN office line group 5-m.
It is connected to the DN network 6-m.

The leased line trunk circuit 13 is connected to the leased line network 8 through the leased line 7 and can send and receive a call signal and the like to and from a telephone exchange device installed in another office (not shown). It is what The main control unit 14 includes the exchange circuit 12
ISDN line circuit 9-1
To 9-n, ISDN trunk circuit group 12-1 to 1
Various control is performed by transmitting and receiving a control signal to / from each component inside the main device 1 such as 2-m via the data highway 17.

The storage unit 15 stores various programs for executing the operation of the main control unit 14, data, and the like. In addition, the storage unit 15 is particularly characterized in that it has the tables shown in FIGS.

Next, the tables shown in FIGS. 3 to 5 provided in the storage unit 15 will be described. First, in the table shown in FIG. 3, the ISDN telephone lines 2-1 to 2-n for the ISDN office line group 5-1 and the function keys 24-1 and 24-
2, and also shows the relationship with the dial-in number. The dial-in number is used to make an incoming call from an ISDN office line directly to an extension ISDN phone without going through a relay stand.
It is an extension number assigned to each of the n.

FIG. 4 shows ISDN office line groups 5-1 to 5
-M, additional numbers, and ISDN networks 6-1 to 6-m
And a representative number of an ISDN office line group, which is a caller number permitted for each network. The additional numbers are ISDN telephones 2-1 to 2-
When a call is made from n to any of the ISDN networks 6-1 to 6-m, it is formed as a telephone number that can be discriminated by the ISDN network by adding it to the head of the dial-in number.

FIG. 5 shows ISDN office line groups 5-1 to 5
-M and their corresponding ISDN networks 6-1 to 6
-M represents a table showing a relationship as to whether or not to verify the content of the caller number information. The content of the table is the same as that of the ISDN network 6-1 to which the ISDN office line group 5-1 is connected. It means that the ISDN network 6-2 to which the ISDN station line group 5-2 is connected is not verified, although the verification is performed.

Now, returning to the description of FIG. 1, the PCM highway 16 is a voice signal transmission line including time slots for transmitting and receiving voice signals, and is connected to various line circuits and various trunk circuits. .

The data highway 17 is a control signal transmission path for transmitting a control signal transmitted and received between the main control unit 14 and each of the other constituent elements in the main device 1. That is,
The above-mentioned components in the main device 1 are the data highway 1
7 is connected to the main control unit 14 via the main control unit 1.
Reference numeral 4 controls the switching circuit 12 according to a control program stored in advance in the storage unit 15 so that a communication path between various line circuits and various trunk circuits is formed to enable the switching operation. Next, a method of making a call request to the ISDN network will be described with reference to two cases in which the ISDN telephone 2-1 makes a call request to the main device 1.

The first case is the ISDN telephone 2-
When the user presses the function key 24-1 in 1,
This is detected by the ISDN line circuit 9-1 of the main unit,
The data is transmitted to the main control unit 14 via the data highway 17.
On the other hand, in the main control unit 14, the ISDN telephone 2-1 is the extension 3
It is judged from the table of FIG. 3 that the use of 00 is started, the LED corresponding to the function key 24-1 of the ISDN telephone 2-1 is turned on via the ISDN line circuit 9-1, and the transmission of the handset 21 is performed. Have a certain tone from the handset. Furthermore, the user who hears this tone has ISD.
For example, "#", "7", "0" for grasping one ISDN trunk circuit in the N trunk circuit group 12-1.
When "0" or "0" is input from the dial pad section 23, this is detected by the ISDN line circuit 9-1 of the main unit and transmitted to the main control section 14 via the data highway 17. On the other hand, the main control unit 14 is "#""7""0""0"
"0" is analyzed, and as a result, one ISDN trunk circuit in the ISDN trunk circuit group 12-1 is grasped, and the destination is specified to be the ISDN network 6-1. The flow chart shown is started.

The second case is the ISDN telephone 2
When the user lifts the handset 21 at -1, the caller number information is sent from the memory (not shown) inside the ISDN telephone 2-1 to the main unit 1, and the ISDN line circuit 9-on the main unit 1 side. This is detected by 1 and transmitted to the main control unit 14 via the data highway 17. On the other hand, the main control unit 14 recognizes that the ISDN telephone 2-1 is in a calling state, automatically grasps one ISDN trunk circuit in the ISDN trunk circuit group 12-1 and, at the same time, sends a call to the ISDN network. 6-1 is specified, and then the flowcharts shown in FIGS. 6 and 7 are started.

Next, the operation of the main unit 1 when transmitting to the ISDN network from an extension line or ISDN office line will be described below. Here, the ISDN network 6-1 includes at least "7431000" of the sender number information. And "743200
"0" is allowed. First, the main controller 14
Determine whether the sender is an analog extension (step 60)
1). If the source is an analog extension, the destination ISD
Caller number information permitted in the N network is created (step 602). Specifically, using the table of the storage unit 15 shown in FIG. 4, the ISDN acquired by the analog telephone 3 is used.
Caller number information is created from the representative number of the ISDN office line corresponding to the ISDN trunk circuit group to which the trunk circuit belongs. Then, the created caller number information is transmitted to the network and notified to the destination telephone (step 603).

On the other hand, if the source is not an analog extension in step 601, then it is determined whether the source is an ISDN extension (step 604). Here, when it is determined that the source is the ISDN extension, the table shown in FIG. 5 is referred to, and it is determined whether or not the ISDN which is the destination verifies (step 605). Step 60
If the ISDN network, which is the destination of the call, verifies the caller number information at 5, then it is determined whether the caller ID information is notified from the ISDN telephone via the extension (step 60).
6). From the ISDN telephone set 2-1 to the ISDN described above
As in the second case when making a call request to the network, I
When the caller number information is notified from the SDN telephone through the extension, it is determined whether or not the caller number information is allowed by the ISDN network to be sent next (step 607).

In step 607, if the caller number information notified from the ISDN telephone through the extension is not allowed in the ISDN network, in step 606, the above-mentioned ISDN telephone 2-1 transmits to the ISDN network. As in the first case when making a request, when the ISDN telephone is considered to notify the use start of the extension number 300 and the caller number information is not notified, the process proceeds to step 602 and the table shown in FIG. 4 is used. The representative number "7" of the ISDN office line, which is the caller number permitted to the ISDN network of the destination according to the ISDN trunk circuit group 5-1 to which the ISDN trunk circuit grasped via the extension number 300 belongs.
The sender number information "432000" is created (step 602). Then, the created sender number information "7432
"000" is transmitted to the network and notified to the destination telephone (step 603).

On the other hand, in step 607, the caller ID information notified from the ISDN telephone through the extension is ISD.
If the N network permits, this sender number information is transmitted to the ISDN network as it is. Here, steps 606 and 6
At 07 and 603, when the ISDN telephone notifies the caller number information through the extension and the caller number information is permitted in the network, the caller number information notified through the extension is directly transmitted to the network. The reason is to notify the callee of the caller number information attached to the ISDN telephone so that the call is accurately returned to the ISDN telephone when the call is sent back from the callee. Now, in step 605, the ISDN that is the destination
If the network is not to be verified, then it is judged whether or not the caller number information is notified from the ISDN extension (step 608).

If the ISDN telephone notifies the calling party number information, the notified calling party number information is transmitted to the network as it is and notified to the destination telephone (step 603). In step 608, if the caller number information is not notified from the sender, the caller number information is created (step 609), and the created caller number information is transmitted to the network and sent to the destination. Notify the telephone (step 603).

Now, in step 604, the sender is IS
If it is determined that the extension is not a DN extension, the next sender is ISD.
It is judged whether the line is an N station line or a dedicated line (step 70).
1). In this step, if the source is the ISDN station line or the leased line, the table shown in FIG. 5 is referred to, and it is determined whether the ISDN network corresponding to the destination ISDN station line group is to be verified. (Step 702). Here, when the ISDN network as the transmission destination is for verification, the transmission source number information permitted by the ISDN network as the transmission destination is created (step 602), and the transmission source number information created after this is added to the network. To the destination telephone (step 603).

In step 702, if the ISDN network as the transmission destination does not perform verification, it is next determined whether or not the caller number information has been notified from the transmission source ISDN station line or leased line. (Step 703). here,
When the caller number information is notified from the caller's ISDN office line or leased line, the notified caller number information is directly transmitted to the network and notified to the callee's telephone (step 60).
3). If the caller number information is not notified from the sender in step 703, the caller number information is created with the caller number being the representative number of the ISDN office line allowed in the ISDN network (step 704). ), The caller number information created thereafter is transmitted to the network and notified to the destination telephone (step 603).

In step 701, if the source is not an ISDN office line or a leased line, it is judged whether the sender is an analog station line or a leased line (step 705), and the sender is an analog station line or a leased line. If the line is a leased line, then the table shown in FIG. 5 is referred to, and it is determined whether or not the ISDN, which is the transmission destination, is to be verified (step 706). Here, if the ISDN network as the transmission destination is to be verified, the sender number information permitted for the ISDN network at the transmission destination is created (step 602), and then the created sender is created. The number information is transmitted to the network and notified to the destination telephone (step 603). If the sender is not an analog office line or leased line in step 705, and if the ISDN network of the recipient does not perform verification in step 706, caller number information is not created. Send to the ISDN network. As described above, appropriate transmission can be performed to the ISDN network to be verified in this way.

Next, step 60 of the above flow chart.
2, the main control unit 14 for creating caller number information when a call is made from any of the ISDN telephones 2-1 to 2-n to any of the ISDN networks 6-1 to 6-m. The processing operation will be described with reference to the flow chart shown in FIG. 8 by taking the first case where the ISDN telephone 2-1 issues a call request to the ISDN network 5-1 as an example.

When the flow for creating the sender number information allowed in the ISDN network is started, first, the ISD of the sender is started.
The N telephone sets are searched for which function key has been pressed (step 801). In the previous case, the function key 24-1 was pressed on the ISDN telephone 2-1 and this is searched. Next, it is determined using the table shown in FIG. 3 whether or not a dial-in extension number has been set for the pressed function key (step 802). In the previous case, it is determined here that the dial-in number "1000" is set corresponding to the function key 24-1.

In step 802, if the dial-in extension number is set for the pressed function key, then the table shown in FIG. 4 is used to correspond to the destination line group of the ISDN network. It is determined whether or not the additional number is registered (step 803). In the previous case, it is determined that the additional number “743” is registered here. Next, if an additional number is registered in the table shown in FIG. 4 corresponding to the destination line group of the ISDN network, caller number information is created from the additional number and dial-in extension number (step). 804). In the previous case,
Here, the additional number "743" and the dial-in extension number "1"
Caller number information "7431000" is created from "000".

On the other hand, if the dial-in extension number is not set for the function key pressed in step 802, the ISDN station line of the table shown in FIG. Representative number "743200
"0" is read (step 806), and sender number information is created using this representative number (step 807). If the additional number is not registered in step 803 in the table shown in FIG. 4 corresponding to the destination ISDN network line group, the caller number is created using only the dial-in extension number (step 804). ). Thus, the processing operation of the main control unit 14 is completed.

As described above, according to the present invention,
When a call is requested from the ISDN telephone connected to the extension or a call is requested via another ISDN network, the caller ID information is verified and the station line is disconnected by the caller's ISDN network. Since this can be prevented, it is possible to obtain the effect that the user of the ISDN telephone does not have to take the trouble of making a redial call.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a telephone exchange device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an appearance of an ISDN telephone 2-1 shown in FIG.

FIG. 3 is a diagram showing a table showing the relationship between ISDN telephones, function keys 24-1, function keys 24-2 and dial-in numbers provided in each ISDN telephone.

FIG. 4 is a diagram showing ISDN station line groups 5-1 to 5-m, additional numbers, ISDN networks 6-1 to 6-m, and ISDN station line groups which are caller numbers permitted for each network. The figure showing the table which shows the relationship with a representative number.

FIG. 5 shows a relationship between each of the ISDN office line groups 5-1 to 5-m and whether or not the corresponding ISDN networks 6-1 to 6-m verify the contents of caller number information. The figure showing the table.

FIG. 6 is a diagram showing a flowchart showing the processing operation of the main control unit when there is a call request to the ISDN network in the embodiment of the present invention.

FIG. 7 is a diagram showing a flowchart showing the processing operation of the main control unit when there is a call request to the ISDN network in the embodiment of the present invention.

FIG. 8 is an ISDN telephone 2-in the embodiment of the present invention.
The figure showing the flow chart which shows the processing operation of the main control part at the time of creating caller number information, when there is a call from any of 1-2.

[Explanation of symbols]

1 main device 2-1 to 2-n ISDN telephone 3 analog telephone 4 digital button telephone 5-1 to 5-m ISDN station line group 6-1 to 6-m ISDN network 7 dedicated line 8 dedicated line network 9-1 to 9-n ISDN line circuit 10 analog line circuit 11 Digital line circuit 12-1 to 12-m ISDN trunk circuit group 13 Private line trunk circuit 14 Main control unit 15 memory 16 PCM highway 17 Data Highway

Claims (10)

(57) [Claims] 1. A telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines connected to different ISDN networks, wherein an extension or extension group permitted for each ISDN network is provided. A first storage unit for storing the assigned caller number; a second storage unit for storing information indicating a relationship of whether or not each ISDN network verifies the caller number; When there is a call request from an ISDN telephone, the network specifying means for specifying the ISDN network of the call destination by analyzing the call request, and the ISDN network of the call destination specified by this network specifying means are the caller numbers. When the second storage means determines whether or not to perform verification, and the verification determination means determines that the ISDN network of the called party verifies the sender number. , It IS information relating to the caller number stored in the first storage means of the destination
A telephone exchange device, comprising: a sending means for sending to a DN network. 2. A telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines respectively connected to different ISDN networks, wherein an extension or extension group allowed for each ISDN network is provided. A first storage unit for storing the assigned caller number; a second storage unit for storing information indicating a relationship of whether or not each ISDN network verifies the caller number; When a call request is made from an ISDN telephone, the call request information is analyzed by the network specifying means for specifying the call destination ISDN network by analyzing the call request and the call destination ISDN network specified by the network specifying means. When the ISDN network determines that the ISDN network verifies the caller number, the verification judgment means for judging whether or not the verification is to be carried out is carried out by the second storage means. The verification means for ISDN telephone caller number sent from verifies whether acceptable to the destination of the ISDN network, the caller ID in the verification means of the destination ISD
If it is verified that the N network is not permitted, the transmission means for transmitting the information relating to the caller number stored in the first storage means to the ISDN network of the transmission destination is provided. Characteristic telephone exchange device. 3. A telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines connected to different ISDN networks, and when the ISDN telephone requests a call, the call is transmitted. A network identifying means for identifying the ISDN network of the callee by analyzing the request, and whether or not the ISDN network of the callee identified by this network identifying means verifies the caller number in advance in the telephone exchange device. When the ISDN network judges that the ISDN network verifies the caller ID, the caller ID sent from the ISDN telephone is the callee destination. Verification means for verifying whether or not the ISDN network is allowed by the information stored in advance in the telephone exchange device, and the verification means verifies that the sender number is the destination. ISD
If the network is verified to be acceptable, then the ISDN
A telephone exchange apparatus comprising: a sending unit that sends information relating to a caller number sent from a telephone set to the ISDN network of the call destination. 4. A telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines connected to different ISDN networks, wherein an extension or extension group permitted for each ISDN network is provided. Storage means for storing the assigned caller number, network specifying means for specifying a call destination ISDN network by analyzing the call request when there is a call request from the ISDN telephone, and this network specifying means Verification determining means for determining whether or not the ISDN network of the caller specified by the method verifies the caller's number, and whether the caller's number is notified from the ISDN telephone. Notification determining means for determining whether or not the ISDN network determines that the ISDN network verifies the sender number, and the notification determining means Said I at
When it is determined that the caller number has not been notified from the SDN telephone, the sending means sends the information relating to the caller number stored in the storage means to the ISDN network of the callee. A telephone exchange device characterized by the above. 5. A telephone switching apparatus for switching and connecting a plurality of ISDN office lines connected to different ISDN networks, and stores a caller number assigned to an extension or extension group, which is allowed for each ISDN network. When there is a call origination request from the storage means and one of the plurality of ISDN networks, by analyzing the call origination request, another I
Verification judging means for judging whether or not the SDN network verifies the calling party number based on information stored in advance in the telephone exchange, and the other ISDN network verifies the calling party number by this verification judging means. And a sending means for sending the information related to the caller number stored in the storage means to the other ISDN network when it is determined. 6. A method of transmitting caller ID information by a telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines respectively connected to different ISDN networks, wherein the ISDN telephone is called. When there is a request, the ISDN network of the transmission destination is specified by analyzing the transmission request, and whether or not the specified ISDN network verifies the caller number is stored in advance in the telephone exchange device. When it is determined based on the information, and the ISDN network of the callee determines that the caller ID is verified, the ISN stored in advance in the telephone exchange device is determined.
A method for transmitting caller number information, which is characterized in that information relating to a caller number permitted in the SDN network is transmitted to the ISDN network of the call destination. 7. A method of transmitting caller ID information by a telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines respectively connected to different ISDN networks. When there is a request, the ISDN network of the transmission destination is specified by analyzing the transmission request, and whether or not the specified ISDN network verifies the caller number is stored in advance in the telephone exchange device. If it is determined based on the information and the ISDN network verifies the caller number, it is determined whether the caller number sent from the ISDN telephone is allowed by the ISDN network of the callee. When it is verified by the information stored in advance in the exchange device that the caller number sent from the ISDN telephone is not allowed in the ISDN network of the callee. How transmission of caller ID information, characterized in that transmits information relating to the caller number allowed for the ISDN network which is previously stored in the telephone exchange to said destination of ISDN network. 8. A method of transmitting caller ID information by a telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines respectively connected to different ISDN networks. When there is a request, the ISDN network of the transmission destination is specified by analyzing the transmission request, and whether or not the specified ISDN network verifies the caller number is stored in advance in the telephone exchange device. If it is determined based on the information and the sender number information is verified, the I
Whether or not the caller number sent from the SDN telephone is allowed in the ISDN network of the callee is verified by the information stored in advance in the telephone exchange device, and the caller number information sent from the ISDN telephone Is verified to be accepted by the ISDN network of the callee, the caller is characterized in that information relating to the caller number sent from the ISDN telephone is sent to the ISDN network of the callee. Number information transmission method. 9. A method of transmitting caller ID information by a telephone switching device for switching and connecting an ISDN telephone connected to an extension and a plurality of ISDN office lines respectively connected to different ISDN networks. When there is a request, the ISDN network of the transmission destination is specified by analyzing the transmission request, and whether or not the specified ISDN network verifies the caller number is stored in advance in the telephone exchange device. Judging from the information, it is judged from the information stored in advance in the telephone exchange whether or not the caller number is notified from the ISDN telephone, it is judged that the ISDN network verifies the caller number, and If the caller ID has not been notified from the ISDN telephone, the caller number permitted in the ISDN network stored in advance in the telephone exchange device is used. How transmission of caller ID information, characterized in that delivering that information to the destination of the ISDN network. 10. A method of transmitting caller ID information by a telephone switching device for switching and connecting a plurality of ISDN office lines respectively connected to different ISDN networks, wherein a calling request is made from one of the plurality of ISDN networks. In addition, it is determined whether or not the other ISDN network of the call destination verifies the caller number based on the information stored in advance in the telephone exchange device, and it is determined that the other ISDN network verifies the caller number information. The telephone exchange device, the I
A method for transmitting caller number information, which is characterized in that information relating to a caller number permitted in an SDN network is transmitted to the other ISDN network.