JPH05191853A - Telephone exchange - Google Patents

Abstract

PURPOSE:To permit an extension connecting equipment which rings a bell to enable a response only at the time of on-hook and permit the other equipment to enable an operation such as an outgoing without being affected by means of an incoming call when a key telephone set is connected to a general terminal equipment in same extension in parallel and one of them is designated to ring the bell. CONSTITUTION:A telephone exchange is constituted in such a way that the designated extension connecting equipment is stored in an incoming call extension connecting equipment storing means 115 when the incoming call for designating the extension connecting equipment is generated in parallel connecting extension, the on-hooked extension connecting equipment is stored in an on-hook extension connecting equipment number storing means 116 when one of the extension connecting equipments is on-hooked and a call path is connected only when an extension connecting equipment number comparing means 117 compares the extension connecting equipment numbers which are stored in the incoming call extension connecting equipment storing means 115 and the on-hook extension connecting equipment number storing means 116 so as to obtain coincidence.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone exchange, and more particularly to a telephone exchange capable of selecting and calling either a key telephone connected to the same extension or a general terminal device.

[0002]

2. Description of the Related Art Conventionally, a hybrid type local electronic device capable of using both a general standard terminal device (generally referred to as a general terminal device hereinafter) such as an ordinary standard type single telephone, an answering machine or a data terminal, and a key telephone. In the exchange, a key telephone and a general terminal device can be connected in parallel to the same extension port as extension connecting devices. When an incoming call occurs on an extension connected in parallel as described above, it is possible to specify and call either the key telephone or the general terminal device.

[0003]

In the conventional system, the extension desired to be called when an incoming call is made in which one of the key telephone and the general terminal device is designated at one extension port connected in parallel. Only the bell of the connected device can be rung. However, at this time, either the key telephone or the general terminal device can pick up the handset (hereinafter referred to as "off-hook") to respond. That is, there is a problem in that even if the extension-connected device that does not ring the bell goes off-hook, the incoming call is answered.

According to the present invention, when a key telephone and a general terminal device are connected in parallel to the same extension and one of the extension connecting devices is designated and called, the extension connecting device in which the bell is ringing is off-hook. It is an object of the present invention to provide a telephone exchange capable of answering an incoming call only when the call is made.

[0005]

To achieve the above object, in the telephone exchange of the present invention, a direct current loop current monitoring means for monitoring the direct current loop current of an extension communication line and a data communication line are used. A data communication means for exchanging data with a key telephone, a bell signal generating means for transmitting a bell signal to the communication line, a station line trunk interface means for controlling an interface with a station line trunk, and an extension call The communication path means for connecting or disconnecting the communication path of the line and the office line trunk interface means, and the information sent through the call line, the data communication line and the office line trunk interface means are analyzed to analyze the information in the system. Control means for controlling each part, dial analysis means for analyzing a dial dialed from an extension under the control of the control means, A parallel connection possible / impossible storage means that stores the possibility / impossible of parallel connection between the telephone and the general terminal device, and whether the bell of both the key telephone and the general terminal device is rung, or the extension following the extension number A calling method storage means for selecting which of the button telephone and the general terminal device to ring by the designated number of the connected device;
Incoming extension connection device storage means for storing the extension connection device number being received, Off-hook extension connection device number storage means for storing the off-hook extension connection device number, and the extension stored in the incoming extension connection device storage means An extension connection device number comparison means for comparing the connection device number with the extension connection device number stored in the off-hook extension connection device number storage means.

[0006]

According to the present invention, when the incoming call is generated in the parallel connection extension, the control means refers to the parallel connection enable / disable storage means and determines that the parallel connection is possible. If it is determined that the mode for ringing the bell by designating the extension connection device designation number is set by referring to the storage means, the dial analysis means determines which of the bell of the key telephone and the general terminal device If the number for ringing the bell of the button telephone is specified, the bell ringing data is sent to the button telephone through the data communication line and the ringing data is analyzed. The extension connection device number of this button telephone is stored in the incoming extension connection device storage means, and if the number for ringing the bell of the general terminal device is specified, the extension connection The bell signal is sent to the service line, the extension connecting device number of the general terminal device is stored in the receiving extension connecting device storing means, and the off-hook extension is detected when it is detected that the button telephone is off-hook during the incoming call. The extension connection device number of the button telephone is stored in the connection device number storage means, and when it is detected that the general terminal device goes off-hook, the extension connection device number of the general terminal device is stored in the off-hook extension connection device number storage device, and the extension The connection device number comparison means compares the extension connection device number stored in the incoming extension connection device storage means with the extension connection device number stored in the off-hook extension connection device number storage means. Since it operates like connecting a road means, either the key telephone or the general terminal device is When the alarm occurs, only the bell of the specified extension device is sounded, but the bell is not sounded The extension device cannot answer even if it goes off hook first, and the extension device that is ringing the bell goes off hook. Only then can the call be answered.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A telephone exchange according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of a telephone exchange according to an embodiment of the present invention. In FIG. 1, 100 is a telephone exchange, 200 is a key telephone connected as an extension terminal device of the telephone exchange 100, and 300 is the telephone exchange 100.
It is a standard single telephone connected as an extension terminal device. Reference numeral 101 is a data communication line connected to the key telephone 200, and 102 is a call line connected to both the key telephone 200 and the standard single telephone 300.

In the telephone exchange 100, 103 is a data communication means for exchanging data with the key telephone 200 via a data communication line, and 104 is a DC loop current monitor of the communication line 102 and is sent from the standard single telephone 300. Direct current loop current monitoring means for monitoring a pulse dial for dialing, 105 a bell signal generating means for sending a bell signal to the communication line 102, 106 a station line, 107 a station line 10
6 is an office line trunk interface means for making an electrical interface with the communication line 6, 108 is a communication path means for connecting or disconnecting a voice communication path between the plurality of communication lines 102 and the office line trunk interface means 107, and 109 is data communication. Means 103, DC loop current monitoring means 104
Also, receiving information from the station line trunk interface means 107, the data communication means 103, the DC loop current monitoring means 104, the bell signal generation means 105, the dial analysis means 110, the parallel connection enable / disable control means 111 and the calling method storage. It is a control means for controlling the means 112. Reference numeral 110 denotes dial analysis means for analyzing a dial dialed from an extension under the control of the control means 109.
11 is possible to connect a key telephone and a general terminal device in parallel /
A parallel connection enabling / disabling control means for storing the impossibility, whether to ring the bells of both the button telephone and the general terminal device when an incoming call occurs on the extension of the parallel connection during the parallel connection, Alternatively, a calling method storage means for selecting whether to ring only one of the general terminal devices, 113 is an extension interface, 115 is an incoming extension connection device storage means for storing the incoming extension connection device, and 116 is off-hook. Off-hook extension connection device number storage means for storing the selected extension connection device number, 11
Reference numeral 7 denotes an extension connection device number comparison means for comparing the extension connection device number stored in the incoming extension connection device storage means 115 with the extension connection device number stored in the off-hook extension connection device number storage means 116.

Next, the configuration of the key telephone 200 will be described. Reference numeral 201 is a data communication means for exchanging data with the data communication means 103 in the telephone exchange 100 via the data communication line 101, 202 is an audible tone generating means for generating a bell sound, 203 is an outside line button, a dial button or Operation means provided with function buttons, etc., 204
Is a handset, and 205 is the handset 20 via the telephone line 102.
4 is a call circuit means for enabling a call, 206 is a control means for controlling each means based on an input from the data communication means 201 or the operation means 203, and 207 is a lamp for the user when the terminal is in use. It is a display means for displaying or displaying a lamp while another terminal is in use.

The interrelationship and operation of the constituent elements of this embodiment having the above-described constituent elements will be described when the control means 109 of the telephone exchange 100 controls each section when an incoming call to the connected extension occurs. A description will be given based on the flowchart of FIG. First, when an extension call is received (step 1), the control means 109 refers to the parallel connection possible / impossible storage means 111 and judges whether the parallel connection is possible (step 2). If parallel connection is not possible, it is judged whether the extension connection device of the received extension is a button telephone or a general terminal device (step 3), and if it is a button telephone, the button telephone 200 via the data communication line 101.
Data communication means 1 to send bell ringing data to
03 (step 4), and if the extension connection device of the received extension is a general terminal device, a bell signal generation unit is issued to send a bell signal to the general terminal device 300 to the communication line 102. Control 105 (step 5).

On the other hand, if parallel connection is set in step 2, then the calling method storage means 112 for selecting the ringing method of the bell of the extension connection device at the time of parallel connection is referred to, and the key telephone and the general terminal are always used. Determine whether it is a mode to ring both bells of the device or a mode in which the extension connection device to be activated can be specified by the extension connection device designation number (step 6), and be sure to ring both the bell of the key telephone and the general terminal device. If it is set to, the data communication means 103 is controlled so as to send bell ringing data to the key telephone 200 via the data communication line 101 (step 7), and the call line 102 is
Bell signal generator 105 is controlled to send a bell signal to general terminal device 300 (step 8).

On the other hand, if it is set in step 6 that the extension connecting device to be sounded by the extension connecting device designation number can be designated, the extension analyzing device designated by the dial analyzing means is controlled to be analyzed (step 6). 9),
If the key telephone is specified, the key telephone is stored in the incoming extension connection device storage means 115 (step 10), and data communication is performed so that bell ringing data is transmitted to the key telephone 200 via the data communication line 101. Controls the means 103 (step 11), and the key telephone 2
At 00, the data communication means 201 indicates the data communication line 1
The bell ringing data is received via 01 and transferred to the control means 206. The control means 206 controls the audible tone generating means 202 according to the received bell ringing data to generate a bell sound.

If the general terminal device is designated, the general terminal device is stored in the incoming call extension connection device storage means 115 (step 12), and the bell signal is sent to the general terminal device 300 for the communication line 102. The bell of the standard single-use telephone 300 rings by controlling the bell signal generation unit 105 so as to send out (step 13).

FIG. 3 is a flowchart of off-hook detection during an incoming call. First, when an incoming call occurs, the control means 109
Clears the off-hook extension connection device number storage means 116 (step 14), determines whether the general terminal device 300 is off-hook, that is, the DC loop is turned on (step 15), and if it is off-hook, the off-hook extension. The general terminal device 3 is stored in the connected device number storage means 116.
The extension connection device number of 00 is stored (step 18).
If the general terminal device 300 is not off-hook, then it is determined whether the button telephone 200 is off-hook, that is, if off-hook data is detected, and if it is off-hook (step 16), the button is stored in the off-hook extension connection device number storage means 116. The extension connection device number of the telephone 200 is stored (step 17).

Next, the extension connection device number comparison means 117 compares the extension connection device number stored in the incoming extension connection device storage means 115 and the extension connection device number stored in the off-hook extension connection device number storage means 116. Comparison is made (step 19), and if they match, the communication path with the extension connection device is connected (step 20).

[0016]

As described above, according to the telephone exchange of the present invention, by storing and comparing the incoming extension connection device number and the off-hook extension connection device number,
Since the incoming call can be answered only when the extension device that is receiving the call goes off-hook, the extension device that does not ring the bell does not respond, and the extension device that does not ring the bell does not It has a great practical effect, such as being able to transmit.

[Brief description of drawings]

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

FIG. 2 is a flowchart when the control means 109 of the telephone exchange 100 controls each part when an incoming call to the extension connected to the same occurs.

FIG. 3 is a flowchart of an off-hook detection operation during an incoming call.

[Explanation of symbols]

 100 Telephone Switch 101 Data Communication Line 102 Communication Line 103 Data Communication Means 104 DC Loop Current Monitoring Means 105 Bell Signal Sending Means 106 Station Line 107 Station Line Trunk Interface Means 108 Call Path Means 109 Control Means 110 Dial Analysis Means 111 Parallel Connection Possible / impossible control means 112 Calling method storage means 113 Extension interface 114 Extension interface 115 Incoming extension connection equipment storage means 116 Off-hook extension connection equipment number storage means 117 Extension connection equipment number comparison means 200 Button telephone 201 Data communication means 202 Audible tone Generating means 203 Operating means 204 Handset 206 Control means 207 Display means 208 Button telephone 300 Standard single telephone

Claims (1)

[Claims] 1. A direct current loop current monitoring means for monitoring a direct current loop current of an extension communication line, a data communication means for exchanging data with a key telephone via the data communication line, and the communication line. A bell signal generating means for transmitting a bell signal, an office line trunk interface means for controlling the interface with the office line trunk, and a communication path means for connecting or disconnecting the communication paths of the extension communication line and the office line trunk interface means. , Control means for controlling each part in the system by analyzing information sent via the call line, data communication line and office line trunk interface means, and dialed from an extension line by the control of the control means. The dial analysis means for analyzing the dial, and whether the key telephone and the general terminal device can be connected in parallel are stored. Enable / disable parallel connection storage means and ring the bell of both the key telephone and the general terminal, or ring the bell of both the key telephone and the general terminal according to the extension connection device designation number following the extension number. A calling method storage means for selecting whether or not, an incoming extension connection device storage means for storing an incoming extension connection device number, an off-hook extension connection device number storage means for storing an off-hook extension connection device number, and the incoming extension The extension connection device number comparison means for comparing the extension connection device number stored in the connection device storage means with the extension connection device number stored in the off-hook extension connection device number storage means, When an incoming call occurs, the control means refers to the parallel connection possible / impossible storage means and judges that parallel connection is possible. If it is determined that the mode for ringing the bell by designating the extension connection device designation number is set by referring to the calling method storage means, the dial analysis means determines whether the key telephone or the general terminal device is used. If the number for ringing the bell of the key telephone is specified, the bell ringing data is sent to the key telephone via the data communication line. At the same time, the extension connection device number of this key telephone is stored in the incoming extension connection device storage means, and if the number for ringing the bell of the general terminal device is specified, a bell signal is sent to the extension communication line. At the same time as transmitting, the extension connection device storage means stores the extension connection device number of the general terminal device, and the key telephone is off-hook during the incoming call. When it is detected that the off-hook extension connection device number storage means stores the extension connection device number of the button telephone, and when it is detected that the general terminal device goes off-hook, the off-hook extension connection device number storage means connects the extension connection of the general terminal device. A device number is stored, and the extension connection device number comparison unit stores the extension connection device number stored in the incoming extension connection device storage unit and the extension connection device number stored in the off-hook extension connection device number storage unit. A telephone exchange configured to connect the above-mentioned communication path means if they are compared and match.