JP3243815B2 - Telephone exchange - 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, and more particularly, to a telephone exchange which can select and call either a key telephone or a general terminal connected to the same extension.

[0002]

2. Description of the Related Art Conventionally, a hybrid type private electronic device which can use both a general terminal device (hereinafter, generically referred to as a general terminal device) such as a normal standard single telephone, an answering machine or a data terminal, and a key telephone. In the exchange, a parallel connection of a key telephone and a general terminal device can be used as an extension connecting device to the same extension port. When an incoming call occurs at an extension connected in parallel in this way, it is possible to designate and call either the key telephone or the general terminal device.

[0003]

According to the conventional method, when an incoming call with one of a key telephone and a general terminal device is received at one extension port connected in parallel, the extension to be called is called. Only the bell of the connected device can be sounded. At this time, even if the key telephone or the general terminal device picks up the handset (hereinafter referred to as off-hook), it can respond. In other words, there is a problem in that even if the extension connecting device in which the bell is not ringed goes off-hook, the incoming call is answered.

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

[0005]

In order to achieve the above object, in the telephone exchange according to the present invention, a DC loop current monitoring means for monitoring a DC loop current of an extension telephone line, and a data communication line. Data communication means for exchanging data with the key telephone, bell signal generating means for transmitting a bell signal to the communication line, office trunk interface means for interfacing with the office trunk, A communication path means for connecting or disconnecting a communication path of the line and office trunk interface means, and information transmitted through the communication line, data communication line and office line trunk interface means, and Control means for controlling each part, dial analysis means for analyzing a dial dialed from an extension under the control of the control means, Parallel connection enabled / disabled storage means for storing the enabled / disabled state of parallel connection between the portable telephone and the general terminal, and whether the bell of both the key telephone and the general terminal is to ring, or the extension following the extension number Calling method storage means for selecting which of the key telephone and the general terminal device to ring according to the connection device designation number,
Incoming extension connected device storage means for storing the incoming extension connected device number, off-hook extension connected device number storage means for storing the off-hook extension connected device number, and extension stored in the incoming extension connected device storage means An extension connection device number comparing 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 an incoming call arrives at a parallel connection extension, the control means refers to the parallel connection possible / impossible storage means and determines that parallel connection is possible. Referring to the storage means, if it is determined that the mode is set to ring the bell by designating the extension connection device designation number, the dial analysis means, either the key telephone or the general terminal device bell Analyzing whether it is specified to ring, if the number to ring the bell of the key telephone is specified, the bell ring data is transmitted to the key telephone via the data communication line and the ring is transmitted. 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 designated, the extension communication is performed. A bell signal is transmitted to the extension line, and the extension connection device number of the general terminal device is stored in the reception extension connection device storage means. When the off-hook of the key telephone is detected during an incoming call, the off-hook extension The extension device number of the key telephone is stored in the connection device number storage means, and when it is detected that the general terminal device has gone off-hook, the extension connection device number of the general terminal device is stored in the off-hook extension device number storage means, The connected device number comparing unit compares the extension connected device number stored in the incoming extension connected device storage unit with the extension connected device number stored in the off-hook extension connected device number storage unit. It operates to connect the connection means, so that either the key telephone or the general terminal When the bell occurs, only the bell of the designated extension device is ringed, but the extension device that does not ring does not answer even if it goes off-hook first, and the extension device with the bell ringing goes off-hook. Only when is it possible to answer the incoming call.

[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 one embodiment of the present invention. 1, reference numeral 100 denotes a telephone exchange, 200 denotes a key telephone connected as an extension terminal device of the telephone exchange 100, and 300 denotes a telephone exchange 100.
Is a standard stand-alone telephone connected as an extension terminal device. 101 is a data communication line connected to the key telephone 200, and 102 is a communication line connected to both the key telephone 200 and the standard single telephone 300.

In the telephone exchange 100, reference numeral 103 denotes data communication means for exchanging data with the key telephone 200 via the data communication line, and reference numeral 104 denotes a DC loop current monitoring of the communication line 102 and a signal transmitted from the standard single telephone 300. DC loop current monitoring means for monitoring a pulse dial, 105 a bell signal generating means for transmitting a bell signal to the communication line 102, 106 a local line, 107 a local line 10
6, a communication line means for connecting or releasing a voice communication path between the plurality of communication lines 102 and the communication line trunk interface means 107; and 109, data communication. Means 103, DC loop current monitoring means 104
In response to the information from the central office 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. This is 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 a parallel connection of a key telephone and a general terminal device /
The parallel connection enable / disable control means 112, which stores the impossibility, sets whether to ring the bells of both the key telephone and the general terminal device when an incoming call occurs in the parallel connection extension during the parallel connection, Or, a calling method storing means for selecting whether to ring only one of the bells of the general terminal device, 113 is an extension interface, 115 is an incoming extension connected device storing means for storing an incoming extension connected device, and 116 is off-hook. Off-hook extension connection device number storage means for storing the extension connection device number thus set, 11
Reference numeral 7 denotes an extension connection device number comparing unit that compares the extension connection device number stored in the incoming extension connection device storage unit 115 with the extension connection device number stored in the off-hook extension connection device number storage unit 116.

Next, the configuration of the key telephone 200 will be described. 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 and the like, 204
Is the handset, 205 is the handset 20 via the telephone line 102.
4, a communication circuit means for enabling a telephone call; 206, a control means for controlling each means based on an input from the data communication means 201 or the operation means 203; This is display means for performing display or lamp display during use of another terminal.

The relationship between the components and the operation of the present embodiment composed of the components described above will be described in connection with the case where the control means 109 of the telephone exchange 100 controls each unit when an incoming call to the connected extension occurs. This will be described with reference to FIG. 2 which is a flowchart. First, when an extension arrives (step 1), the control means 109 refers to the parallel connection possible / impossible storage means 111 and determines whether or not parallel connection is set (step 2). If parallel connection is disabled, it is determined whether the extension connection device of the received extension is a key telephone or a general terminal device (step 3). If it is a key telephone, the key telephone 200 is transmitted via the data communication line 101.
To the data communication means 1 to transmit the bell ringing data
03 (step 4), and if the extension connection device of the received extension is a general terminal device, a bell signal generating unit for transmitting a bell signal to the general terminal device 300 to the communication line 102. 105 is controlled (step 5).

On the other hand, if it is set in step 2 that parallel connection is possible, reference is made to the calling method storage means 112 for selecting the ringing method of the bell of the extension device at the time of parallel connection. It is determined whether the mode is to ring both bells of the device or the mode in which the extension device to be ringed can be designated by the extension connection device designation number (step 6). Is set to, the data communication means 103 is controlled so as to transmit the bell ringing data to the key telephone 200 via the data communication line 101 (step 7).
The bell signal generator 105 is controlled so as to transmit a bell signal to the general terminal device 300 (step 8).

On the other hand, if the mode is set in step 6 in which the extension connection device to be ringed by the extension connection device designation number can be designated, control is performed so that the extension connection device specified by the dial analysis means is analyzed (step 6). 9),
If the key telephone is specified, the key telephone is stored in the incoming extension connected device storage means 115 (step 10), and the data communication is performed such that the bell ringing data is transmitted to the key telephone 200 via the data communication line 101. Means 103 (step 11) to control the key telephone 2
00, the data communication means 201
01, the bell ringing data is received and transferred to the control means 206. The control means 206 controls the audible tone generation means 202 according to the received ringing data to generate a bell sound.

If a general terminal device is designated, the general terminal device is stored in the incoming call extension connection device storage means 115 (step 12), and a bell signal is transmitted to the general terminal device 300 for the communication line 102. (Step 13), the bell of the standard single telephone 300 rings.

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 has been off-hook, that is, whether the DC loop has been turned on (step 15). The general terminal device 3 is stored in the connection device number storage means 116.
The extension connection device number of 00 is stored (step 18).
If the general terminal device 300 has not been off-hook, it is determined whether the key telephone 200 has been off-hook, that is, whether or not off-hook data has been detected. If off-hook has been detected (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 stored in the incoming extension connection device storage device 115 and the extension connection device number stored in the off-hook extension connection device number storage device 116 by the extension connection device number comparing means 117. A comparison is made (step 19), and if they match, a communication path with the extension connecting device is connected (step 20).

[0016]

As described above, according to the telephone exchange of the present invention, by storing and comparing the number of the extension connection equipment that has been received and the number of the extension connection equipment that has been off-hook,
Since the incoming extension device can only respond to the incoming call when it goes off-hook, the extension device that does not ring the bell does not answer and the extension device that does not ring the bell Can be transmitted, and its practical effect is great.

[Brief description of the 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 unit 109 of the telephone exchange 100 controls each unit when an incoming call to an extension connected to the same occurs.

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

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 telephone exchange 101 data communication line 102 communication line 103 data communication means 104 DC loop current monitoring means 105 bell signal transmission means 106 office line 107 office line trunk interface means 108 communication path means 109 control means 110 dial analysis means 111 parallel connection Enable / disable 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 key 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

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-40696 (JP, A) JP-A-3-40697 (JP, A) JP-A-3-40698 (JP, A) JP-A-63-1988 190464 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H04Q 3/58-3/62 H04M 3/02-3/06

Claims (1)

(57) [Claims] 1. A DC loop current monitoring means for monitoring a DC loop current of an extension communication line; a data communication means for exchanging data with a key telephone via a data communication line; Bell signal generating means for transmitting a bell signal to the outside, trunk line interface means for interfacing with the trunk trunk, speech path means for connecting or releasing the speech path of the extension line and the trunk line interface means. Control means for analyzing information sent via the communication line, the data communication line, and the office trunk interface means to control each unit in the system; and dialing from an extension under the control of the control means. Dial analysis means for analyzing a dial, and storing possibility / impossibility of parallel connection between a key telephone and a general terminal device Storage means for enabling / disabling parallel connection, and ringing both the bell of the key telephone and the general terminal, or the ring of either the key telephone or the general terminal according to the extension connection device designation number following the extension number Calling method storage means for selecting the extension number, incoming extension connection apparatus storage means for storing the extension connection apparatus number being received, off-hook extension connection apparatus number storage means for storing the off-hook extension connection apparatus number, and the incoming extension Extension connection equipment number comparing means for comparing the extension connection equipment number stored in the connection equipment storage means with the extension connection equipment number stored in the off-hook extension connection equipment number storage means, When an incoming call occurs, the control means refers to the parallel connection possible / impossible storage means and determines that parallel connection is possible. Referring to the calling method storage means, if it is determined that the mode is set to ring the bell by designating the extension connection device designation number, the dial analysis means, either the key telephone or the general terminal device It is analyzed whether the bell is set to ring, and if the number for ringing the bell of the key telephone is specified, bell ring data is transmitted to the key telephone via the data communication line. In addition, the extension connection device number of the key telephone is stored in the incoming extension connection device storage means, and when a number for ringing the bell of the general terminal device is designated, a bell signal is transmitted to the extension communication line. And the extension telephone number of the general terminal device is stored in the receiving extension connection device storage means. When it is detected that the off-hook extension connection device number is stored in the off-hook extension connection device number storage means, and when it is detected that the general terminal device is off-hook, the extension connection of the general terminal device is stored in the off-hook extension connection device number storage means. A device number is stored, and the extension connected device number stored in the incoming extension connected device storage unit and the extension connected device number stored in the off-hook extension connected device number storage unit by the extension connected device number comparing unit. A telephone exchange configured to compare and, if they match, connect the communication path means.