JPS63196141A - Communication terminal equipment - Google Patents

Abstract

PURPOSE:To contrive to improve the operability by giving up a call automatically if the called communication network shows disabled connection and making a dial again to a 2nd communication network in response to dial number information stored in a dial information memory. CONSTITUTION:All lines of a communication network corresponding to a 1st telephone number are busy, the connection is disabled and a busy tone BT comes from an exchange, then a control section 6 opens the line once, acquires again the line, reads a 2nd telephone number from a RAM 8, generates a dial pulse or a DTMC signal corresponding to the 2nd telephone number and sends it to the subscriber line 1. Thus, in making a call by dialing to an opposite terminal equipment connectable to plural communication networks, if the 1st communication network shows disabled connection, the 2nd communication network is selected automatically to make dialing.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention provides a communication terminal that is connected to a subscriber line of an exchange that can be connected to a plurality of different communication networks, and that is equipped with an automatic dialing function. Concerning improvements to equipment.

(Prior Art) In recent years, with the increase in communication demand, various communication networks such as a second subscriber telephone network and a dedicated communication network have been constructed in addition to the subscriber telephone network. These communication networks generally connect the exchanges of subscriber telephone networks, and when a subscriber uses these communication networks to communicate with a desired party, the communication party must be determined in advance for each communication network. This can be accomplished by sending a dialing signal corresponding to the telephone number from the subscriber's communication terminal device to the exchange of the subscriber telephone network, thereby calling the communication partner via the desired communication network.

On the other hand, many communication terminal devices such as telephone devices and facsimile devices are equipped with an automatic dialing function. This automatic dialing function, for example, stores the telephone number of a desired communication partner in advance in a dialing memory in association with a GL number, and responds when an arbitrary registered number is input using a dial key or a subscriber selection key. A telephone number is read from the dial memory, and a dial signal consisting of a dial pulse or a DTMF signal is generated in accordance with the telephone number and sent to the line. Therefore, when using a device equipped with this type of calling function, the subscriber can register the telephone number of the desired communication partner in advance in the dial memory, and then input the small-digit registration number when making a call. It is very convenient because you can make a call with just a simple operation.

However, when this type of communication terminal device is used by connecting it to the exchange of the subscriber telephone network mentioned above, conventionally, for the desired communication partner terminal, the telephone number of each communication network to which this terminal can be connected is determined in advance. Automatic dialing can only be made to one communication network that has been registered. Therefore, if the line of the communication network that was used to make the call using automatic dialing is in use and the subscriber wants to select another communication network to make the call, the subscriber can, for example, put the handset on-hook to make the call. Once you abandon the phone number, you have to manually enter the phone number into another communication network to call again, which makes the i! Fi! It was l.

(Problems to be Solved by the Invention) As described above, in the conventional device, when the line of the communication network from which the call was made is in use and the subscriber attempts to make a re-call to another communication network, the subscriber However, this invention has the problem of poor operability since all operations must be performed manually.The present invention has focused on this point, and has been developed to change the number of calls from the first communication network to the second communication network. The present invention aims to provide a communication terminal that can automatically perform the above steps, thereby improving operability.

[Structure of the Invention] (Means for Solving the Problems) As shown in FIG. 1, the present invention provides a dial information memory A that stores dial number information for each communication network for a desired communication partner terminal. Also, a connection state determining means B that determines whether connection to a corresponding communication network is possible based on a signal arriving from the exchange after sending a dial signal, a first dial sending means C, and a second dial sending means. When a call request to the desired communication partner terminal is input, the first dial sending means C transmits corresponding dial number information stored in the dial information memory. Among them, the dial number information of the first communication network is selected and the dial signal thereof is sent to the exchange, and after the dial signal is sent by the first dial sending means C, the connection state determining means B performs the first communication. When it is determined that connection to the network is not possible, the second
After the subscriber line is released by the dial sending means, the dial number information of the second communication network is selected from among the corresponding dial number information stored in the dial information memory A, and the dial signal is sent to the exchange. It was designed to do so.

(Function) As a result, if the first communication network to which the call was originally made is unable to be connected, the call is automatically abandoned and the call is returned to the first communication network according to the dial number information stored in the dial information memory A. Since a re-call will be made to the second communication network,
By writing the dial number information for each communication network for the desired communication partner terminal in advance in the dial information memory A, the user can make a call to the first communication network simply by inputting the call request of the communication partner. The call and re-calling to the second communication network in the event that connection to the first communication network is not possible are automatically performed, thereby greatly improving operability.

(Embodiment) FIG. 2 shows the configuration of a telephone device which is a communication terminal device in an embodiment of the present invention.

This device is broadly divided into a telephone section and an automatic dialing section, which are alternatively connected to a subscriber line 1 of an exchange (not shown) via switching relay contacts 2. First, the telephone unit includes a telephone circuit 3, a transmitter 41, and a receiver 42.
The device is composed of a handset 4 with a built-in device, and a hook switch 5 that is linked to the hook operation of the handset 4.

On the other hand, the automatic dialing device section has a control circuit 6 consisting of, for example, a microcomputer. This control circuit 6 includes a main control section <cc> 61, a ROM 62 storing its operating program, and an input section 63 consisting of 110 ports.
and an output section 64, and the input section 63 includes a dial key 71, a subscriber selection key 72, a redial key 73, a Bose key 74, a hooking key 75, a registration key 76, and a call switch arranged on the operation panel. 77 operation signals are input. In addition, 78 is hook switch 5
Generates a hook signal in conjunction with the on/off operation of
This is a hook contact for input to the ID section 6.

The control circuit 6 also includes an RA as a dial information memory.
M8 is attached. This RAM 8 stores telephone numbers for each of a plurality of communication networks to which this terminal can be connected for each communication partner terminal, and is written and read under the control of the main control section 61. Note that 81 is a backup power source for power outages. On the other hand, the output section 64 of the control circuit 6 outputs a driving signal 6111 to the DTMF signal generating circuit 9, the relay driving n-path 10, and the display 18 made of, for example, a light emitting diode. First of all, DTM
The F signal generation circuit 9 is a DTMF (Dua 1Tone
This DTMF signal is transmitted to the line transformer 12.
, are sent to the subscriber line 1 via the switching relay contact 2 and the dial contact 11, respectively. Also, relay drive circuit 1
0 operates the switching relay contact 2 and the dial contact 11 for sending out dial pulses in accordance with the drive ill/till signal from the control circuit 6. Rough indicator 1
8 lights up in response to the dial signal sending operation, thereby notifying the user that the dial signal is being sent.

Further, a signal detector 13 is connected to the subscriber line 1. This signal detector 13 detects signals representing the exchange connection state, such as dial tone, busy tone, ring bank tone, etc., arriving from the exchange after sending out the dial signal, and outputs the detection signal to the tUt+ section 6.

14 is a loudspeaker receiving circuit used when making an on-hook call, and includes an amplifier 15, a speaker 16, and a mute circuit 1.
It consists of 7.

By the way, the IQ111 circuit 6 is connected to the tsm related to the calling operation.
The means include dial number registration control means 65, first dial transmission control means 66, and second dial transmission control means 67, as shown in FIG. First, the dial information registration ll1lll1 means 65 operates when the registration mode is designated by the operation of the registration key 76, and when the telephone number of each of the plurality of communication networks to which this terminal is connectable is input for a desired communication partner terminal. , these telephone numbers are prioritized in the order of input and stored in the RAM 8 in association with each key of the subscriber selection key 72.

Further, the first dial sending control means 66 controls when the subscriber selection key 72 or the redial key 73 is operated.
In addition to controlling the acquisition of subscriber 11!1, RAM8
Read out the telephone number of the communication network with the highest priority among the telephone numbers stored for the corresponding communication partner from
A dial pulse or DTMF signal corresponding to this telephone number is generated from the dial contact 11 or the DTMF signal generating circuit 9, and is sent to the exchange via the subscriber line 1. Furthermore, the second dial sending [1 means 67 determines whether or not a busy tone detection signal is output from the signal detector 13 after the first dial sending control means 66 sends out the dial signal, and determines whether or not a busy tone detection signal is output from the signal detector 13, When the detection signal is output, the subscriber line 1 is temporarily released by switching the switching relay contact 2 and a predetermined pause period is established, and then the telephone corresponding to the communication network with the second priority is selected from the RAM 8. The number is read out and a dial pulse or DTMF signal corresponding to the telephone number is generated and sent through the subscriber line 1 to the exchange. In addition, if the communication network with the second priority is also busy, the second dial transmission control means 67 will dial the telephone number of the communication network with the third priority if it is registered in the RAM 8. Reads the telephone number and performs re-call control. That is,
Until a connectable communication network can be selected, call control is performed on communication networks in which telephone numbers are stored in order according to priority.

Next, the operation of 812 configured as above will be explained according to the control procedure of control circuit 6. In this embodiment, for example, as shown in FIG. 8, the RAM 8 stores telephone numbers (first, second, and third telephone numbers) for up to three communication networks for each desired communication partner. I will explain it as a thing.

In the standby state, the 1l11111 circuit 6 inputs the registration key 7 in steps 4a, 4b, and 4c, as shown in FIG.
1 operation monitoring, occurrence monitoring of incoming calls, and occurrence monitoring of outgoing calls. In this state, when the subscriber goes off-hook by picking up the handset 4 or pressing the call button 77, the control circuit 6 detects this in step 4C and proceeds to step 4d, where the switching relay contact 2 is first set to the telephone line. By switching from the opening side to the automatic dialing device side, the line 1it (subscriber line 1) is captured using the line transformer 12. Note that if the user goes off-hook by picking up the handset 4, the line is captured when the hook switch 5 is turned on. When the line is captured, the control unit 6 performs steps 4e and 4.
At step 4f, the subscriber abandons the call and monitors the arrival of the dial tone DT from the exchange, and when the dial tone DT arrives, the input operation of the dial number is monitored at step 4g. If the subscriber abandons the call by performing an off-hook operation, the process moves to step 4k to release the line and then return to the standby state.

Now, when the subscriber specifies the calling party by operating the subscriber selection key 72 while the dial tone DT has arrived, the control 118Is6 detects this operation in step 4g and moves to step 4h. Then, it is determined whether the dialing operation is manual or automatic. In this case, since automatic dialing is made by operating the subscriber selection key 72, the control section 6 moves to step 41, where it recognizes the key code of the subscriber selection key 72, and sets a predetermined pause time in step 4j. Then the fifth
The process moves to step 5a in the figure, where the first telephone number among the telephone numbers of the communication partner corresponding to the key code of the subscriber selection key 72 is read out from the RAM 8. And RAM
Every time one digit of the telephone number is read from 8, in step 5b, a dial pulse or DTMF signal corresponding to this telephone number is generated from the dial contact 11 or the DTMF signal generation circuit 9 and sent to the subscriber line 1; 5
At C, the display 18 is turned on to notify the subscriber that dialing is being sent. Then, each time the transmission of the dial signal for one digit is completed, in step 5d and step 5e, the completion of dial transmission is determined and the arrival of the busy tone BT from the exchange is monitored, and the transmission of the dial signal for all digits is performed. Repeat the above dial signal sending system until the end. In this way, a dialing signal corresponding to the first telephone number is sent out. On the other hand, if the line of the communication network corresponding to the above-mentioned first telephone number is connectable and the communication partner terminal is in standby mode,
The exchange performs a well-known switching connection operation to connect the line with the communication partner terminal, and thereby the control section 6 performs predetermined call control in step 6f. When the call ends, this is detected in step 50 and step 5h
After opening the line and performing predetermined call termination processing, the terminal returns to the standby state.

By the way, if all lines of the communication network corresponding to the first telephone number are in use and connection is impossible, the exchange will send a busy tone BT. Then, the control unit 6 moves from step 5e to step 51, where it first stops sending the dial signal and stops displaying the dial sending on the display 18, and then stores the second telephone number in the RAM 8 in step 5j. Determine whether or not. If the second telephone number is now stored, the predetermined F is necessary to temporarily release the line in step 5 and return the exchange to standby state in step 5Q.
After passing through time R, the line is acquired again in step 5m, and as shown in FIG. 6, in steps 6a and 6b, the call abandonment operation is monitored and the arrival of dial tone DT is monitored, respectively. After inserting a predetermined pause time in step 6d, the second telephone number is read from the RAM 8 in step 6e, and a dial pulse or DTMF signal corresponding to this second telephone number is generated in step 6f to connect the subscriber. 1, and in step 69, the display 18 is turned on to notify the subscriber that the dial is being sent. Thus, a call is now made to the communication network corresponding to the second telephone number. In addition, the above second
If the telephone number is not stored, the control unit 6 moves from step 5J to step 5n and step 50, where it respectively monitors the call abandonment operation and monitors whether or not a certain period of time has elapsed. When the subscriber abandons the call by operating the on-footer or a certain period of time has elapsed, the process moves to step 5p, the line is released, and the system returns to the standby state.

In response to a call originating from the above-mentioned second telephone number, if the line of the communication network could be connected, the control unit 6 would perform the steps shown in FIG. 5 after confirming the ringback tone coming from the exchange. 5f call control, whereby the subscriber can make a call with the communication partner terminal.

On the other hand, if the communication network corresponding to this second telephone number is also not connectable, the control unit 6 confirms this by the busy tone 8T coming from the exchange in step 61, and sends and displays a dial signal in step 6j. vessel 18
Then, in step 6, it is determined whether or not the third telephone number is stored in the RAM 8. Then, if the third phone number is not stored, the return control according to steps 5n to 5p in FIG. In accordance with the procedures shown in steps 7a to 7m, brightness control is performed on the communication network corresponding to the third telephone number in the same manner as in the case of calling based on the second telephone number.

As described above, in this embodiment, when attempting to make a call using automatic dialing to a destination terminal that can be connected to multiple communication networks, if the first communication network cannot be connected, the call is automatically made. A second communication network is selected and a call is made, and if the second communication network is also unable to be connected, a third communication network is automatically selected and a call is made. Therefore, the subscriber uses RAM8 as dial information memory.
By pre-memorizing telephone numbers for each communication network with priority for one communication partner, all you have to do is operate the subscriber selection key corresponding to the communication partner, even if connection is impossible. Even if a communication network exists, a connectable communication network is automatically selected and a call can be made using this communication network.

Therefore, the operability for the subscriber is greatly improved, and the occurrence of input errors is reduced compared to conventional devices where the user had to enter the phone number manually each time, making the call more accurate. be able to.

Note that the present invention is not limited to the above embodiments. For example, the display may be a dot matrix display, and the type of communication network being called may be displayed on the display. In this way, the subscriber can clearly know through which communication network the subscriber is communicating. Further, the type of dial signal may be changed depending on the type of communication network. In addition, the number and type of communication networks, the configuration of the connection state determining means, the 6111111 procedure and control content of each of the first and second dial sending means, the type of communication terminal device (it may be a data communication device such as a facsimile machine), etc. Various modifications may be made without departing from the spirit of the present invention.

[Effects of the Invention] As described in detail above, according to the present invention, a dial information memory is provided that stores dial number information for each communication network for a desired communication partner terminal, and a dial information memory is provided that stores dial number information for each communication network for a desired communication partner terminal. A connection state determining means for determining whether connection to a corresponding communication network is possible based on a signal, a first dial sending means, and a second dial sending means are provided, When a call request is input, the first dial sending means selects the dial number information of the first communication network from among the corresponding dial number information stored in the dial information memory. Sends the dial signal to the exchange,
Further, after the first dial sending means sends out the dial signal, when the connection state determining means determines that connection to the first communication network is not possible, the second dial sending means releases the subscriber line. After that, the dial number information of the second communication network is selected from among the corresponding dial number information stored in the dial information memory, and the dial signal is sent to the exchange. It is possible to provide a communication terminal device that can automatically perform operations from making a call to the second communication network to making a call to the second communication network, thereby improving operability.

[Brief explanation of the drawing]

FIG. 1 is a functional configuration diagram of a communication terminal device of the present invention, and FIGS. 2 to 8 are for explaining a telephone device that is a communication terminal device in an embodiment of the present invention. FIG. 3 is a functional block diagram showing the control contents of the control section, and FIGS. 4 to 7 are each a circuit block diagram showing the configuration of
FIG. 8 is a flowchart showing the control procedure and tsm contents of the I1!11 section, and is a schematic diagram showing an example of the storage format of dial number information. A...Dial information memory, B...Connection state determining means, C...First dial sending means, D...Second dial sending means, 1...Extension, 2...Switching Relay contact, 3... Call circuit, 4... Handset, 5.
... Hook switch, 6... Control unit, 8... RAM as dial information memory, 9... DTMF signal generation circuit, 10... Relay drive unit, 11... Dial contact, 12...・Line transformer, 13... Signal detector, 14... Loudspeaker receiving circuit, 15... Amplifier, 16
...Speaker, 17...Mute circuit, is--
-Display device, 61... Main feed control section, 65... Dial information registration control means, 66... First dial sending control means, 67... Second dial sending Il means, 71.
...Dial key, 72...Subscriber selection key, 73.
...Re-dial key, 74...Bose key, 75...
・Hooking key, 76...Registration key, 77...Outgoing switch, 78...Hook contact key 〇Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 3

Claims (2)

[Claims] (1) In a communication terminal device that is connected to a subscriber line of an exchange that can be connected to a plurality of different communication networks and is equipped with an automatic dialing function, dial number information for each of the above-mentioned communication networks is transmitted to each of the desired communication partner terminals. a stored dialing information memory, a connection status determining means for determining whether connection to a corresponding communication network is possible based on a signal arriving from the exchange after sending a dialing signal, and a connection state determining means for determining whether or not a connection to a corresponding communication network is possible; When input, the dial number information of the first communication network is selected from among the corresponding dial number information stored in the dial information memory, and the dial signal corresponding to this dial number information is transmitted to the exchange after acquiring the subscriber line. a first dial sending means that sends a dial signal to the subscriber line, and when the connection state determining means determines that connection to the first communication network is not possible after the first dial sending means sends a dial signal, After releasing the dial number information, the dial number information of the second communication network is selected from among the dial number information stored in the dial information memory, and the dial signal corresponding to this dial number information is sent to the exchange after acquiring the subscriber line. A communication terminal device comprising: second dial sending means. (2) When it is determined that connection to the first communication network is not possible, the second dial sending means selects a communication network until a connectable communication network is found, selects the dial number information of this overly reliable network, and The communication terminal device according to claim 1, wherein the communication terminal device repeatedly transmits a dial signal corresponding to the dial number information.