JPS63158952A - Telephone terminal equipment - Google Patents

Abstract

PURPOSE:To automatically connect a line to a high priority line, by providing a control means which switches the line to another line keeping a closed line at a non-holding state or a holding state when another line is designated within a line closure set time or after the set time. CONSTITUTION:The control means 17 controls the whole of a device and is constituted with a microcomputer. An incoming signal arriving from a switched line 1 is detected by a line wire incoming detecting means 3, and the incoming signal arriving from an extension 2 is detected by an extension incoming detecting means 4. A holding means 5 holds the line 1, and a hook switch 7 is provided with a contact 7a which closes the line and a contact 7b connected to the means 17. The means 17, when another line being designated within a time set by a timer means 16 after closing the line, for example, five seconds, keeps the closed line at the non-holding state, then, switches the line to another line. Also, when another line is designated after the lapse of the set time, is keeps the closed line at the holding state, then, switches the line to another line. Thus, it is possible to connect the line to the high priority line automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a telephone terminal device capable of connecting a plurality of lines.

2. Description of the Related Art Conventionally, telephone terminal devices have been used that can connect a public line and an extension line that can be used as an intercom in the home. In order to make operation as simple as possible with such telephone terminal equipment, the public line is given a higher priority than the extension line, and when making a call, there is a switch to select the telephone line. The public line will be automatically connected to the device by simply lifting the hook, i.e., going off-hook, without having to operate the phone.Also, if you want to make a call on an extension, first specify the extension using the telephone line selection switch. It is configured so that when you later pick up the handset and go off-hook, the extension is connected and you can make a call.Furthermore, while you are talking to the other party using a public line, you can put the other party on hold and use the extension to, for example, be in another room. When you want to talk to your family, just operate the switch to select an extension.
The system is configured so that the public line is automatically put on hold and then switched to the extension line, thereby preventing an accident in which the public line that is currently in use is accidentally opened and the call is interrupted.

Problems to be Solved by the Invention However, when attempting to make a call to an extension using a telephone terminal device such as the one described above, if you accidentally off-hook the handset first and then operate the switch to specify the extension. First, the public line is temporarily closed, and then the switch to specify the extension is operated, so the public line is put on hold, and if the user is not aware of this state, the call to the extension is not During this time, the public line remains closed for heat, and if there is a caller trying to make a call to the line to which this telephone terminal is connected, the line will be busy and the call will not be possible. It had the problem of being stored away.

The present invention has been made in view of the above-mentioned prior art, and simply by off-hooking the handset, the handset is automatically connected to a high-priority line without having to specify a line using a line selection switch, and temporarily connects to a line with a higher priority during a call. When you want to talk to another person via a phone line, you can close the phone line without losing the convenient function of automatically putting the current line on hold and switching to another line with a single operation. If you select another telephone line within a certain period of time, the currently closed telephone line will not be put on hold, which will prevent you from needlessly closing a telephone line that you have no intention of using. The present invention provides a telephone terminal device.

Means for Solving the Problems In order to achieve this object, the telephone terminal device of the present invention includes a timer means that starts operation after a line is closed, and a timer means that starts operation after closing a selected line. If you specify another line after the predetermined time has elapsed, the selected line will be put on hold and then switched to the other line, and if you specify another line within the predetermined time, the selected line will be put on hold. and control means for controlling switching to another line without having to do so.

Effects With this configuration, the line switching operation can be performed after a certain period of time has passed after the line has been closed.The currently closed line can be put on hold and then switched to another line, and within a certain period of time after the line has been closed. If you perform a line switching operation, the currently closed line will be opened and switched to another line.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of the main parts of a telephone terminal device in an embodiment of the present invention. In FIG. 1, 1 is a public line, and 2 is an extension used as an intercom. 3 is an external line incoming detection means for detecting an incoming signal arriving from the public line 1; 4 is an extension incoming detection means for detecting an incoming signal coming from extension 2; and 5 is turned on or off by a control signal. Holding means for holding the public line 1, consisting of a switching means 5a and a resistor 5b; 6 a line relay for selectively connecting the device to the public line 1 or the extension 2; 7 a line closing unit. First thing to do
A second contact 7a connected to the control means 17 to be described later
A hook switch 8 having a contact point 7b is dial sending means for sending a dial signal to the line, and is composed of a switching element such as a transistor or a relay. 9 is an interface transformer; IO is a communication circuit that amplifies the receiving signal coming from the line and the sending signal sent to the line; 11 is a transmitter provided in the handset;
2 is a receiver provided in the handset; 13 is an external line selection switch operated when connecting this device to public line l; 14 is an extension selection switch operated when connecting this device to extension 2; 15 Reference numeral 16 indicates a dial keyboard for manually operating the dials, and 16 indicates a means for starting operation in response to a control signal and generating an output signal after a predetermined time. In this embodiment, the predetermined time is set to 5 seconds. Reference numeral 17 denotes a control means for controlling the entire apparatus, and is composed of a microcomputer.

Further, FIG. 2 is a flowchart showing the operation of this device.

The operation of the telephone terminal device configured as described above will be explained below. This device checks whether or not there is an incoming call from public line 1 and extension 2 (STEP l, 5) in the standby state.
TEP2), operation status of outside line selection switch 13 and extension line selection switch 14 (S1' E P 3.5TEP
4), and the state of the hook switch 7 (S'r E
P5) is monitored. When the external line incoming call detecting means 3 detects an incoming call from the public line 1, the process advances to 5TEP6, and when the extension incoming call detecting means 4 detects an incoming call from the extension 2, the process advances to 5TEP7, where the external line selection switch 13
When the operation of the extension selection switch 14 is detected, the process proceeds to STEP 5, and when the operation of the extension selection switch 14 is detected, the process proceeds to 5TEP7, where the hook switch 7 is in the off-hook state (the first and second contacts 7a and 7b are in the on state). When this happens, the process advances to 5TEPIO, and if the on-footer state remains, it returns to 5TEPI.

In 5TEP6, the control means 17 registers internal register rL.
Set FJ (logical level 'IJ) and proceed to 5TEP5.

At 5TEP7, the control means 17 switches the line relay 6 to the rBJ side using the output terminal P9, and the internal register "
CF" should be set (5TEP8), outside line selection switch 1
3 and the status of the hook switch 7 (ST
EP9.5TEP10). When the outside line selection switch 13 is operated, the process advances to 5TEPII, and when the hook switch 7 becomes off-hook, the process advances to 5TEP14.

5TEPII, the control means 17 switches the line relays 6 to "A" by the output terminal P9, and resets the internal register "CF" (logic level 'OJ) L (S
TEP8), timer means 16 by output terminal P11
Activate (STEP 13) and proceed to 5TEP 14.

At step 5TEP14, the control means 17 monitors whether or not a dial is input to the input terminal group P6 using the dial keyboard 15. 5TEP when dial is input
Proceed to step 15, and if no dial is entered, proceed to 5 TEP
Proceed to step 17.

At 5TEP 15, a dial signal corresponding to the input dial is output from output terminal P8, sent to the line by dial sending means 8, register rDFJ inside control means 17 is set (STEP 16), and 5TEP 17
Proceed to.

Here, in the off-hook state, the interface transformer 9, the communication circuit 10, the transmitter 11. The receiver 12 allows the user to talk to the other party.

At 5TEP 17, the control means 17 monitors the state of the hook switch 7, and if it is on-hook (the first contact and the second contact? a%7b are in the off state M), the control means 17 switches to 5T.
Proceed to EP29 and if it remains off-hook, 5TEP1
Proceed to step 8.

5TEP 18. In 5TEP 19, the control means 17
monitors the operations of the outside line selection switch 13 and the extension line selection switch 14. If the outside line selection switch 13 is operated, the process advances to 5TEP27, if the extension line selection switch 14 is operated, the process advances to 5TEP20, and if no button is operated, the process returns to 5TEP14.

At 5TEP20 to STEP22, the control means 17 checks the status of internal registers rDFJ, r.LFJ and whether the timer means 16 has expired. 5TEP25 when it is detected that at least one of the internal registers "DF" and "LF" is set or that an expiration signal from the timer means 16 is applied to the input terminal P5.
If none of the above is detected, proceed to 5TEP23
Proceed to.

At 5TEP23, the control means 17 switches the line relay 6 to the rB side using the output terminal P9 and sets the internal register "CF" (STEP24).
Return to

In the 5TEP25, the control means 17 controls the internal register r.
Check the status of cFJ and if it is set, 5TEP
14, and if it has been reset, the process proceeds to 5TEP26, where the switching means 5a of the reservation means 5 is turned on via the output terminal P10, the resistor 5b is connected to the public line 1, and the process proceeds to 5TEP23.

At 5TEP27, the control means 17 switches the line relay 6 to the "AJ side" via the output terminal P9, resets the internal register "CF" (STEP28), and
Return to

In addition, in 5TEP29.5TEP30, the control means 1
It resets the register "LF" and rDFJ inside 7, returns to 5TEPI, and enters the standby state.

In other words, when you go off-hook the handset, the outside line is automatically connected, and when you dial and talk to the other party, generally more than 5 seconds have elapsed, which is the timer setting, so if you press the extension selection switch in this state, the outside line will be connected. The call will be put on hold and switched to your extension. Also, if you receive a call from an outside line and operate the extension selection switch after speaking with the other party, the outside line will be put on hold and switched to the extension.

Also, after taking the handset off-hook, do not talk to the other party via an outside line (if you operate the extension selection switch, operate the extension selection switch within 5 seconds after taking the handset off-hook to switch to the extension without putting the outside line on hold). It will be done.

Effects of the Invention As described above, the present invention includes a timer means that starts operation after closing a line, and a timer means that starts operation after closing a selected line, and when another line is designated after a predetermined time has elapsed by the output of the timer means. puts the selected line on hold and then switches to another line.
By using a control means that controls switching to another line without putting the selected line on hold if another line is specified within a predetermined time, it is possible to switch to another line without having to specify the line using the line selection switch. Just by taking the handset off-hook, it will automatically connect to the line with the highest priority, and if you temporarily want to talk to another person on another line during a call, it will automatically connect to the line you are currently using with a single operation. Without losing the convenient function of being able to put the phone on hold and switch to another line, if you select another phone line within a certain period of time after the phone line is closed, that is, before the call becomes active, the currently closed call By preventing lines from being put on hold, it is possible to prevent unnecessary closing of telephone lines that are not intended to be used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of the main parts of a telephone terminal device in an embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the device. 1--1 public line 2-111 extension 3-111 outside line incoming call detection means 4-111 extension incoming call detection means 5--1 hold means 5a--switching means 5b--1 Resistor 6-111 Line Relay 7-111 Hook Switch? a--First contact 7b--Second contact 8--Dial sending means 9--111 Interface transformer 10--1 Call circuit 11--1 Transceiver 12-- --- one handset 13 --- one external line selection switch 14 --- one internal line selection switch 15 --- dial keyboard 1a --- one timer one means 17 --- control means

Claims (1)

[Claims] a line selection means that is connectable to a plurality of lines and selects and closes a specific line from the plurality of lines in response to an off-hook; a hold means that places the selected line on hold; a timer means for starting an operation after the line is closed; and if the line selection means specifies another line within the time set in the timer means, the holding means maintains the selected line in a non-holding state; When the selected line is closed and the line selection means specifies another line after the time set in the timer means has elapsed, the holding means holds the selected line. 1. A telephone terminal device comprising: control means for switching to another line while maintaining a put-on-hold state.