JP3448523B2 - Communication terminal adapter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal adapter, and more particularly to a communication terminal which is accommodated between a plurality of subscriber terminals including an emergency call device and an ISDN communication network and has a plurality of communication channels. Regarding the improvement of the adapter.

[0002]

2. Description of the Related Art A telephone system using an ISDN communication network can secure two call channels that can be simultaneously used with one telephone line, and has an analog interface for connecting analog terminals and an ISDN terminal. And a digital interface for connecting to a subscriber's telephone and a facsimile device are connected to the analog port of this analog interface for high-quality analog communication, and a digital interface has a specified S point port for a personal computer. ISDN such as
High-quality and high-speed digital communication can be performed by connecting the terminal.

In this case, when an incoming call is received from the outside while two call channels are in use, an interrupt call function called a call waiting service or a call waiting service is provided to respond to the incoming call. Whether or not is selected by pushing the operation button or the like each time based on the judgment of the subscriber.

However, the call from the subscriber is disconnected by the network, and the call cannot be made until the channel in use is released. If the first call was from an emergency notification device for fire detection, crime prevention detection, etc., even though it was an emergency call, the call could not be made, and the response in an emergency would be delayed. . It is desirable to be able to automatically make an interrupt call for emergency calls automatically.

[0005]

The conventional communication terminal adapter accepts an emergency incoming call from the outside by interruption when all of a plurality of call channels are in use, and conversely detects fire on the subscriber side. , If an emergency notification device such as crime detection is installed as a subscriber terminal and you want to prioritize calling from the emergency notification device, it is not supported, and the terminal connected to your own terminal Therefore, when a plurality of call channels are in use, a new call cannot be made, so that an emergency call from the emergency call device is delayed.

That is, since an emergency call cannot be made from the emergency call device until the call channel in use becomes a free channel, the call is made after the elapse of time, so that the call is accommodated in the terminal adapter. The occupancy of the call channel by the other terminal that is called) prevents the emergency call.

Although such a problem can be solved by providing a dedicated separate line to the emergency notification device, it is because the emergency notification device has a large configuration redundancy and a low frequency of reporting. However, adopting such a configuration is not a practical solution because the line is not effectively used and maintenance costs such as line usage fees are high.

Therefore, an object of the present invention is to provide an emergency notification when an emergency notification device is accommodated (connected) in a communication terminal adapter by occupying a call channel by another terminal accommodated (connected) in the communication terminal adapter. An object of the present invention is to provide a communication terminal adapter capable of ensuring a channel for emergency calls while effectively using one line without being disturbed and preparing another line.

[0009]

In order to solve the above-mentioned problems, the communication terminal adapter according to the present invention adopts a characteristic structure as described below.

(1) It is accommodated between a plurality of subscriber terminals including an emergency notification device and an ISDN communication network, and
In a communication terminal adapter having a plurality of call channels, each of the plurality of subscriber terminals is tightly connected.
Storage means storing unique data indicating whether or not the device is an emergency report device, use detection means for detecting whether or not the plurality of call channels are used, and storage means stored in the storage means.
Each of a plurality of subscriber terminals based on unique data
And identifying means for identifying whether the emergency reporting apparatus for, by the use detection means and identification means, said all of the plurality of call channels Ri Ah in use, and the call source access terminal If the device is not an emergency call device, it is busy and all of the above-mentioned multiple call channels are in use.
In addition, when the calling subscriber terminal is an emergency notification device, the subscriber terminal using any one of the call channels is disconnected from the ISDN communication network, and the call is disconnected. Communication terminal adapter comprising: priority call control means for controlling to make a call from the emergency notification device using the call channel.

(2) The emergency notification device according to (1) is a communication terminal adapter formed by an analog terminal and connected to an analog port formed with respect to the ISDN communication network.

(3) The emergency notification device of the above (1) is I
A communication terminal adapter formed by an SDN terminal and configured by connecting to an S point port formed for the ISDN communication network.

[0013]

[0014]

[0015]

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, communication terminal adaptation according to an embodiment of the present invention will be described in detail with reference to the drawings. This form is an example in which the present invention is applied when the emergency notification device for making a notification to a predetermined telephone number when a fire is detected is configured as an analog terminal, and its schematic circuit configuration is shown in FIG. As shown in 1, ISD
The terminal adapter 2 connected to the N communication network 1 is provided with a control function unit 3 for compositely controlling the whole.

The control function unit 3 includes a CPU 3a and a ROM 3b.
And a RAM 3c and an NV / RAM 3d, and a ROM 3b
Stores a series of program data for operating the CPU 3a to operate the control function unit 3, and is provided externally or internally to the CPU 3a.
The RAM 3c is for writing and reading data that is temporarily necessary when the CPU 3a is operated by a predetermined program, and is provided externally to the CPU 3a or built therein. NV / RAM3d
Is for storing data of various setting contents to be described later, and is composed of a non-volatile memory such as an EEP-ROM or a flash memory.

As conceptually shown in FIG. 2, the contents stored in the RAM 3c are, for example, "2" for the analog port number, "* 000" for the specific dial, and "2" for the calling subaddress.
3 ”, the TEI is stored as“ 32 ”.

Returning to FIG. 1, the input function unit 4 for controlling the control function unit 3 is for performing an input for control of the terminal adapter 2 and an input for communication, and a reset switch or the like is used as a control input. And a serial terminal of RS232C standard for connecting a personal computer as a communication input.

The display function unit 5 displays the operating state of the terminal adapter 2 and the like under the control of the control function unit 3, and is composed of a display element such as an LED or LCD.

T point I provided on the terminal adapter 2
/ F6 is an interface circuit for the ISDN communication network 1, and is configured to be controlled and controlled by the control channel Dch with the control function unit 3 and connected to the T point I / F6. The circuit 7 is a time switch (Tim on the storage terminal side in the information channel.
e / SW), and the converter 8 connected to the switch circuit 7 has a D / A ratio to the analog I / F 9 connected to the subsequent stage.
It is configured to achieve the A conversion function and the A / D conversion function.

S point I / F1 connected to the switch circuit 7
Reference numeral 0 is an interface circuit for accommodating the ISDN terminal, which is configured to control communication by the communication channel Bch between the S point I / F 10 and the switch circuit 7 and also has the control function unit 3 and the S point I / F. The control channel Dch is used for control with the F10.
It is configured to detect the I and recognize the originating subaddress.

A plurality of (n) S points I / F 10 are provided.
12-n are connected to the ISDN terminals 12-1, 12-2 ... 12-n, and a plurality (for example, two) of analog terminals 11-1 and 11-2 are connected to the analog I / F 9.
Note that this embodiment is an example in which the analog terminal 11-2 is an emergency notification device and is configured to notify a planned telephone number when a fire is detected.

Therefore, a plurality of subscriber terminals (analog terminal 11-1, ISDN terminals 12-1 to 2-n) including the emergency notification device (analog terminal 11-2) and IS.
A communication terminal adapter 2 which is housed between the DN communication network 1 and has a plurality of communication channels Bch is configured.

The terminal adapter 2 is constructed so that the subscriber terminal of each of the plurality of subscriber terminals is provided.
An NV / RAM 3d as storage means for storing unique data indicating whether or not the machine is an emergency notification device, and a control function unit 3 as use detection means for detecting whether or not a plurality of call channels Bch are used. , The control function unit 3 detects that a plurality of communication channels Bch are in use, and issues a call with an alert from the emergency notification device (analog terminal 11-2) stored in the NV / RAM 3d. Priority call detection means for detecting the call by the emergency call device (analog terminal 11-2) is detected by the priority call detection means, and a plurality of call channels Bch are used by the use detection means. when it is detected that is, the subscriber station using one traffic channel (analog terminal 11-1, ISDN terminal 12-1 -N) is disconnected from the ISDN communication network 1, and control means is provided for controlling to make a call from the emergency notification device (analog terminal 11-2) using the disconnected idle communication channel. It

Emergency reporting device (analog terminal 11-
When an abnormality such as a fire is detected in 2) and a call is made to a predetermined telephone number, the call detection is started as shown in the flowchart of FIG. If it is determined that there is a free channel, a predetermined notification operation is performed using the free channel in the next step S2.

On the other hand, if there is no free channel, the process proceeds to step S3, the model of the calling source is identified, and if the device is a reporting device, that is, the analog terminal 11-2, the process proceeds to the next step S4. The currently used call channel Bch is disconnected to create an empty channel, and in the next step S5, a predetermined notification operation is performed using the empty channel as in step S2.

When it is determined as the "other" terminal in the identification in step S3, it is made busy in step S6,
In other words, since it is not a call from the analog terminal 11-2, the currently used communication channel Bch is left as it is and a new call is made busy.

Here, the call detection is mainly performed as in the following (Detection 1) to (Detection 4).

(Detection 1) It is a port detection of an analog terminal, and it is a notification terminal by assigning the analog port of the analog I / F 9 to the emergency notification device (analog terminal 11-2) and detecting off-hook. Specify. The analog I / F 9 detects off-hook, and the control function unit 3 determines based on the data set in the NV / RAM 3d whether or not a call is made from the corresponding analog port.

(Detection 2) This is signal detection of the analog terminal, and a specific dial after on-hook from the analog terminal 11-1 and the emergency notification device (analog terminal 11-2) is stored in the NV / RAM 3d and set. By specifying it, specify that it is an emergency call. That is, analog I /
DTMF is detected at F9, and NV / RA of the control function unit 3 is detected.
It is determined by whether or not the specific dial set in M3d is added. I by the T point I / F6
A call to the SDN communication network 1 is made by deleting the specific dial.

(Detection 3) This is the detection of the originating subaddress of the ISDN terminal, and the emergency notification device (analog terminal 11-
By setting the calling subaddress of 2), the call from this calling subaddress is recognized as an emergency call. That is, the calling sub-address is detected at the S point I / F 10, and the judgment is made based on whether or not the calling sub-address is set in the NV / RAM 3d of the control function unit 3.

(Detection 4) TEI detection of the ISDN terminal, and TE of the emergency notification device (analog terminal 11-2)
By setting I, the reporting terminal is identified by TEI. That is, it is determined whether the TEI detected at the S point I / F 10 is the TEI set in the NV / RAM 3d of the control function unit 3.

The disconnection operation of the in-use call in step S4 disconnects one of the currently used speech channels Bch, and the criterion is "previous call / late call / speech channel Bch. B1ch / call channel B
It is possible to set the priority order of “ch B2 ch” and select the terminal to disconnect based on this.

The disconnection on the analog terminal side in step S4 can be performed by disconnecting the connection of the switch circuit 7, and a "message to disconnect" accompanying the disconnecting operation is issued from the analog I / F 9 from the corresponding terminal. It is also possible to start the call end processing by sending the signal, or to send a warning sound signal before the disconnection to emit a sound.

On the other hand, in the disconnection on the ISDN terminal side in step S4, "message data indicating disconnection" is sent to the ISDN communication network 1 side from the S point I / F 10 to the ISDN terminal side to start the end call processing. After that, the ISDN terminal side is also released by the normal call control processing, and ISDN is also released.
The communication network 1 side and the S point I / F 10 side may be individually terminated.

The busy operation of the analog terminal side by the step S6, is performed by sending a busy tone from the analog I / F9, busy operation of the ISDN terminal side, (no information channel) "release completion from the S point I / F10 It is executed by sending the message data to the effect of "" to the ISDN terminal side.

The emergency notification device according to this embodiment is
Although it is configured to detect and report a fire, it may be configured to detect an abnormality by various crime prevention sensors and report it. It may be a device that reports "no abnormality" or a device that periodically reports "current data" at a predetermined time interval. It is formed by an analog type terminal and has an ISDN communication network. It may be configured by connecting to an analog port formed with respect to, or by connecting to an S point port formed with an ISDN type terminal and formed with respect to the ISDN communication network. Of course.

Further, if the data stored in the NV / RAM 3d is configured so as to be stored in correspondence with at least one of the calling sub address on the extension side, the terminal termination identifier, the analog port number, and the calling telephone number. Of course, it is needless to say that the unique data of another mode may be additionally stored.

[0040]

As is apparent from the above description, the communication terminal adapt according to the present invention is applicable to the case where the subscriber side is provided with an emergency notification device for fire detection, crime prevention detection, etc. the call from the emergency notification device may correspond to a case to be prioritized, when a plurality of speech channels in the connected terminal to the host terminal in use forcibly closing communication channel currently in use Since it is possible to make an emergency call, the emergency call from the emergency call device will not be delayed and the emergency call will not be hindered by the occupation of the call channel by other terminals. .

Moreover, since the emergency notification device is not provided with a dedicated separate line, the line can be effectively used.

Therefore, according to the present invention, when the emergency notification device is accommodated (connected), another terminal is accommodated (connected) in the communication terminal adapter without the interruption of the emergency notification due to the occupation of the call channel by the other terminal. It is possible to provide a communication terminal adapter that can secure a channel for emergency calls while effectively using one line without preparing a line.

[Brief description of drawings]

FIG. 1 is a block circuit diagram showing a schematic circuit configuration of a communication terminal adapt according to an embodiment of the present invention.

FIG. 2 is a NV / RA of the communication terminal adaptation shown in FIG.
It is a figure which shows the data storage state of M notionally.

FIG. 3 is a flowchart for mainly explaining a calling operation in the communication terminal adapt shown in FIG.

[Explanation of symbols]

1 ISDN communication network 2 terminal adapter 3 Control function section 3a CPU 3b ROM 3c RAM 3d NV / RAM 4 Input function section 5 Display function section 6 T point I / F 7 switch circuit 8 converter 9 Analog I / F 10 S point I / F 11-1, 11-2 analog terminal 12-1, 12-2, 12-n ISDN terminal

Claims (3)

(57) [Claims] 1. A communication terminal adapter which is housed between a plurality of subscriber terminals including an emergency call device and an ISDN communication network, and which has a plurality of communication channels, wherein: Emergency call for each
A storage unit that stores unique data indicating whether the device is a device, a usage detection unit that detects whether or not the plurality of call channels are used, and a duplication unit based on the unique data stored in the storage unit.
Emergency call device for each of a number of subscriber terminals
And identifying means for identifying whether, by the use detection means and identification means, all of said plurality of call channels Ah is, and the call source of the subscriber station is not the emergency call device in use Sometimes busy,
All of the plurality of call channels are in use, and
When the calling subscriber terminal is an emergency notification device, the subscriber terminal using any of the call channels is disconnected from the ISDN communication network, and the disconnected call channel is used. And a priority transmission control means for controlling the transmission from the emergency notification device by using the communication terminal adapter. 2. The communication according to claim 1, wherein the emergency notification device is formed by an analog terminal and is connected to an analog port formed for the ISDN communication network. Terminal adapter. 3. The emergency notification device according to claim 1, wherein the emergency notification device is formed by an ISDN terminal and is connected to an S point port formed for the ISDN communication network. Communication terminal adapter.