JPS63258191A - Telephone system - Google Patents

Abstract

PURPOSE:To establish extention multiple calling status or extension/line wire multiple calling status by constituting telephones system such as a home telephone set so that a control circuit calls all the telephone sets other than the originating telephone set by using simultaneous calling signals and continues the calling, even after an arbitrary telephone set is responded. CONSTITUTION:For instance an i-th telephone set 12 dials a general call, the control circuit controls so that the relays r13-r53 of the telephone sets 12 other than the i-th telephone set are switched to calling signal oscillator 26 and relays r14-r54 are switched to a hook-off detector 27 to call simultaneously. When for this simultaneous call, an m-th telephone set 12 is hooked off and responds, the control circuit 16 restores the relays r13, r14 corresponding to the m-th telephone set 12. Thereafter, cross points B, i, B, m are turned on to establish a bilateral calling status between the i-th and the m-th telephone sets 12. In such a way, an i-th telephone set, an m-th telephone set, a K-th telephone set... are connected simultaneously, and the extension multiple calling status between three, four... extensions is established.

Description

[Detailed description of the invention] [Industrial application field 1 The present invention relates to telephone devices.

[Prior Art] A telephone device such as a home telephone includes a main telephone circuit connected to a central office line, and three or more telephones each connected to the main telephone circuit via two communication lines. It is conceivable to use something.

According to this telephone device, the telephone is connected to a central office line and can make outside calls or make internal calls with other telephones.

[Problem to be solved by the invention 1 However, in the above telephone device, when a simultaneous ringing signal is sent from any telephone to all other telephones,
Once any other phone answers, the remaining phones will no longer ring and can no longer be answered. Therefore, even if the telephone device has three or more telephones, each telephone can only make an extension two-party call with one other telephone.
It is not possible to hold a conference call or the like using multiple extension calls (simultaneous calls between multiple callers of 3411 or more).

Also, even if a telephone that is currently on an outside call sends a simultaneous ringing signal to all other telephones in order to put the call on hold and transfer it to another telephone, if any other telephone answers, the remaining telephones will no longer ring. It stops and becomes unresponsive. therefore,
Even if the telephone device has three or more telephones, the central office line that is to be released from hold can only make an external two-party call with one transfer destination telephone; It is not possible to hold a conference call using a central office line or two or more multi-telephone terminals (simultaneous calls).

An object of the present invention is to enable multi-party internal and external calls.

[Means for Solving the Problems] The present invention provides a main telephone circuit connected to a single office line, three or more telephones each connected to the main telephone circuit via two communication lines, and a main telephone circuit connected to a single office line. This telephone device has a control circuit for driving and controlling the circuit, and the main telephone circuit includes a switching circuit section for making exchange connections between a central office line and each telephone set, and exchange connections between each telephone set.

The control circuit calls all the telephones other than the calling telephone by the simultaneous ringing signal from the calling telephone, continues to ring the remaining telephones even after any telephone answers, and calls two or more telephones other than the calling telephone as the calling telephone. and/or connected to a central office line.

[Operation] According to the present invention, when a simultaneous ringing signal is sent from any telephone to all other telephones, even after any other telephone answers, the remaining telephones continue to ring, and the remaining telephones are An opportunity for a response will be secured.

Therefore, by connecting two or more telephones other than the calling party to the calling party's telephone, it is possible to establish a multi-extension call (simultaneous calls between three or more telephones).

In addition, even if the telephone that is making an outside call puts the call on hold and transfers it to another telephone, the call will be forwarded to the telephone number 2 or higher, and the call will be transferred to the telephone number 2 or above, and the call will be transferred to the telephone number 2 or above, and the call will be transferred to the telephone number 2 or above. mutual simultaneous calls) can be established.

[Embodiment] FIG. 1 is a circuit diagram showing a telephone device according to an embodiment of the present invention, and FIGS. 2 to 6 are flowcharts corresponding to various operating modes of the telephone device.

The telephone device 10 includes a main device 11 and a plurality of telephones 4112 (in this embodiment, five telephones, first to fifth telephones).

The main device 11 is the main telephone circuit! 5, a control circuit 16, and a power supply circuit 17.

The main telephone circuit 15 is connected to the stations 1i 18A and 18B, and has two communication lines 19A to each telephone 1112.
, 19B.

The main telephone circuit 15 includes a ringing signal loop detector 21, a DTM
F oscillator 22, interrupt signal oscillator 23, hold melody generator (melody IC) 24, capacitor C1, resistor R1,
riL/-rll.

r12, transformer t1. It is equipped with a capacitor C2.

In addition, the main telephone circuit 15 connects each telephone 12 (112 to 51
2), the calling signal oscillator 26
(126-526), off-hook detector 27 (127
~527), extension loop detector 28 (128~528)
, PB receiver 29, capacitors C13 to C53, CI
4-C54, relay r13-r53, r14-r54,
It includes batteries b11 to b51 and transformers t12 to t52.

The main telephone circuit 15 also includes a crosspoint circuit (switching circuit section) 31 consisting of a Couross point IC. The cross point circuit 31 has six horizontal lines from "D" to "6" and four vertical lines from "A" to "D" arranged orthogonally to each other. Lines #111 to N511 are telephone call circuits for each telephone. The terminals on the opposite side of the transformers t12 to t52 corresponding to each telephone 12 are connected to the "1" to "5" lines.The "6" line is a hold circuit, and the "8" line is a holding circuit. A hold melody generator 24 is connected to the line. The "A" line is the office line circuit, and the "^" line is connected to the terminal on the return hot water line side of the transformer tl. The s B m line is the extension circuit. The "C" line is a hold circuit.

The D'' line is an interrupt circuit, and the interrupt signal oscillator 23 is connected to the D'' line.
The contact state of the terminal (indicated by Δ in FIG. 1) is turned on/off, and each telephone 12 is connected to an outside line (office line), an extension line, a door phone, a holding line, and an interrupt circuit. Note that the cross point (C, 6) indicated by a mark in FIG. 1 is always on.

The control circuit 16 receives transmission signals from the ring signal loop detector 21, off-hook detector 27 (127-527), extension loop detector 28 (128-528), and FB receiver 29 of the main telephone circuit 15. The control circuit 16 controls the cross point circuit 31, the DTMF oscillator 22 . Drive control of the hold melody generator 24 and the like.

Each telephone 12 has a telephone circuit 34 and a power supply circuit 35. The telephone circuit 34 includes a dial circuit section, a telephone call circuit section, and a ringer circuit section.

Each operating mode of the telephone device 1O will be explained below.

(Outside call...see Figure 2) When attempting to make an outside call using any telephone 12, for example, the fifth telephone 512, when the handset of the fifth telephone 512 is off-hook from the standby state, the fifth telephone 12, Ii Talking device 51
The extension loop detector 28 corresponding to No. 2 sends this off-footer information to the control circuit 16. The control circuit 16 turns on the cross point (A, 5) of the cross point circuit 31 and sets the relay rll toward the transformer t1 to establish an outside line transmission mode. When the fifth telephone 512 dials the destination number, the extension loop detector 28 (when the dial information is a dial pulse signal) or the FB receiver 29 (when the dial information is a button signal) corresponding to the fifth telephone 512 sends this dial information to the control circuit 16. When sending a dial pulse signal to the 0 station line, the control circuit 16 turns on/off relay rll.
When turned off, a dial pulse is transmitted to the office lines 18A and 18B, and at this time, relay r12 shunts the telephone 12.
Prevent pulse noise from dialing from being transmitted to the side of the dial. When sending a button signal to the 0 station line,
This dial information is transmitted to the DTMF oscillator 22, and a tone is transmitted from the first oscillator 22 to the office lines 18A and 18B. When the ring signal loop detector 21 detects a central office line reversal due to the off-hook of the called party's telephone, this detection information is sent to the control circuit 16, and an outside line communication state is established.

(Incoming outside line call...see Figure 3) When a calling signal from the office arrives on the office lines 18A and 18B,
The ring signal loop detector 21 detects the arrival of an outside line, and this detection information is sent to the control circuit 16. The control circuit 16 is
In this embodiment, the first telephone 112 and the second telephone 4 are set in the order of priority for outside calls! Switch the relays r13 and r23 corresponding to t212 to the calling signal oscillator 26,
Relays r14 and r24 are switched to off-hook detector 27, and first telephone 112 and second telephone 212 are made to ring.

The control circuit 16 connects the tia talk fill'2 and the second telephone 2.
12, each off-hook detector 27
sends on-hook/off-hook information of the telephones 12 to the control circuit 16. ■If the first telephone 112 or the second telephone 212 responds within 5 rings, the control circuit 16 connects relays r13, r23, and relay r14.
, r24, and ■ If the first telephone 112 or the second telephone 212 does not respond within five rings, the control circuit 16 activates the relays r33 to r53 corresponding to the other third telephones 312 to fifth telephones 512. is switched to the calling signal oscillator 26, and the relays r34 to r54 are switched to the off-hook detector 27.
, the other telephone 12 also rings, and the third telephone 31
When any of the second to fifth telephones 512 responds (detected by on-hook/off-hook information of off-hook detector 27), relays r33 to r53 and relays r34 to r5
Next, the control circuit 16 switches the relay rll towards the transformer t'1, e.g. the second telephone 212.
If the terminal is off-hook and in a response state, the cross point (A, 2) of the cross point circuit 31 is turned on to establish an outside line communication state.

(Extension call...see FIG. 4) When attempting to make an extension call using any telephone 12, for example, the fifth telephone 512, when the handset of the fifth telephone 512 is off-hook from the standby state, the call is made to the fifth telephone a512. A corresponding extension loop detector 28 sends this off-hook information to control circuit 16. The control circuit 16 turns on the cross point (A, 5) of the cross point circuit 31, and turns on the relay r.
11 toward transformer t1 to form an outside line calling mode. When the fifth telephone 512 dials "0", the extension loop detector 28 corresponding to the 5711C telephone 512 receives this dial information. Control circuit 16
Send to. After that, if there is no dial information for 3 seconds (preset), the control circuit 16 moves the relay rll toward the capacitor C1, turns on/off the cross point (D, 5) of the cross point circuit 31, and switches the fifth 0 which sends an extension dial tone to the telephone set 512 and turns off the cross point (A, 5) to form an extension dial mode.
Next, when the fifth telephone 512 dials the called number 1 (1 to 5), the extension loop detector 28 corresponding to the fifth telephone 512 sends this dial information to the control circuit 16. The control circuit 16 obtains the on-hook/off-hook information of the called telephone fi 12 through the extension loop detector 28 of the called telephone 12. The control circuit 16 controls: ■ If the called telephone 12 is in the on-hook state, the called telephone 12
Switch the relay rJ14 corresponding to the calling signal oscillator 26, switch the relay rJ14 to the off-hook detector 27, ring the destination telephone 12, and turn on/off the crosspoint (D, 5) of the crosspoint circuit 31. 5th telephone 5
(1%) If the destination telephone 12 is in an off-hook state, turn on/off the cross point (D, 5) of the cross point circuit 31 to send a ring tone to the fifth telephone a51.
2, and the fifth telephone 512 dials another called number. After executing Step E, the control circuit 16 obtains the on-hook/off-footer information of the off-hook detector 27, and restores the relays r13 and r14 of the called telephone 12 when the called telephone 4112 goes off-hook. When the first telephone 112 answers, the crosspoint (D, 5) of the crosspoint circuit 31 is turned off, the crosspoints (B, 1) and (B, 5) are turned on, and an extension call state is established. - If the called telephone 12 does not go off-hook and does not answer, the fifth telephone 512 can dial another called number to call another telephone.

(Multi-party extension call...see Figure 5) When attempting to make a multi-party call using an arbitrary telephone 12, for example, the i-th telephone 12, with two or more other telephones [12], the i-th telephone 12
When the i-th telephone 12 goes off-hook, the extension loop detector 28 corresponding to the i-th telephone 12 sends this on-hook information to the control circuit 16. The control circuit 16 turns on the cross point (A, ri) of the cross point circuit 31 and turns on the relay rll toward the transformer t1 to form an outside line transmission mode. When dialing,
Extension loop detector 28 corresponding to first telephone 12 sends this dialing information to control circuit 16. If there is no dial information for 3 seconds after that, the control circuit 16 sends the relay rll
to the capacitor cl, cross point circuit 31
cross point) (D, t) is turned on/off, and the cross point (A, t) is turned off to form an extension call mode.

Next, when the i-th telephone 12 dials "9" (-broadcast dialing), the extension loop detector 28 corresponding to the i-th telephone 12 sends this dial information to the control circuit 16. As a result, the control circuit 16 controls the first telephone 1
The relays r13 to r53 of the telephones 12 other than 2 are switched to the ringing signal oscillator 26, and the relays r14 to r54 are switched to the off-hook detector 27, and - general paging is performed. At this time, the control circuit 16 causes the on-hook telephone Ia12 to ring, and for the off-hook telephone @12, turns on/off the cross point (D, j) of the cross point circuit 31 to give an interrupt sound, and this off-hook telephone @12 Sounds when 12 goes on hook. The control circuit 16 obtains on-hook/off-hook information from the off-hook detector 27 corresponding to the all-ringing on-hook telephone a12, and monitors whether there is a response.

When the @m telephone 12 first responds to the above-mentioned general paging by off-footing, this off-footer information is transferred from the off-footer detector 27 to the control circuit 16. The control circuit 16 restores the relays r13 and r14 corresponding to the m-th telephone 12, stops the ringing of the m-th telephone 12, and switches the cross points (B, t), (
B, m) is turned on, and the i-th phone 12 and m-th phone 1 are turned on.
2 establishes a two-party call state.

Next, the control circuit 16 continues to ring the remaining telephones 12 and counts the number of rings. Control circuit 1
6 monitors whether there is a response within a preset number of ringings (for example, 5 times). If any one or more telephones 12 respond by going off-hook within the set number of rings, the control circuit 16 transmits the relay r13. -r14 is restored, and the corresponding crosspoint (B, k) of the crosspoint circuit 31 is turned on. As a result, the i-th
The telephones, the m-th telephone, the third telephone, etc. are connected simultaneously via the cross-point circuit 31, and a multi-extension call state is established between three parties, four parties, and so on.

For telephones 12 that have not been off-hook within the set number of rings, the control circuit 16 restores the corresponding relays r13 and r14 and stops ringing.

FIG. 7 is a schematic diagram showing the ringing/talking status of each telephone in the process of establishing a multi-party extension call.

(Internal and external multi-party calls...see Figure 6) Connect an external telephone 12, for example, an external telephone 12 which is in an external telephone call state, to the other telephones 12 on the extension line. Then, when trying to obtain the internal/external multiparty call status, follow the steps below.

That is, when the i-th telephone 12 is dialed "0", the corresponding extension loop detector 28 sends this dial information to the control circuit 16, and the control circuit 16 dials the corresponding cross on the hold circuit of the cross point circuit 31. point(
A, 6) is turned on to send the hold melody from the hold melody generator 24 to the outside line caller who was in a conversation with the i-th telephone 12, and at the same time, the cross point circuit 31 is turned on. , i) (on hold), the control circuit 16 turns on/off (D, i) of the crosspoint circuit 31 and sends an extension dial tone to the i-th telephone 12.

Next, the control circuit 16 connects the i-th telephone 12 and other
A multi-extension call state is obtained by simultaneously connecting the m-th telephone l1112, the telephone 12, and so on.

Next, when the transfer source m-th telephone l1112 goes on-hook, the control circuit 16 receives this on-hook information from the corresponding extension loop detector 28, and the cross-point circuit 31
The cross point (A,
6), and then connect the cross points (A, m), (A, k), etc. between the outside call party who was on hold and the m-th phone, the phone number, etc. of two or more of the transfer destinations above. Simultaneously on, cross point (B, m), (B,
k) Turn off... and establish a multi-party call state after transfer.

In addition, in the L-direction external line multi-party call state, the i-th telephone 12 does not go on-hook, and due to information such as hooking and dialing, the i-th telephone 12, which is the transfer source, also connects to the m-th telephone, which is the transfer destination, and the It may also be connected to the central office line together with the central office line to form an internal/external multi-party call state.

Next, the operation of the above embodiment will be explained. ``According to the above embodiment, from any telephone 12 to all other telephones 1
When transmitting a paging signal to 2, any other telephone 12
Even after the telephone #112 answers, the remaining telephone #112 continues to ring, thereby ensuring an opportunity for the remaining telephone #112 to respond.

Therefore, two or more telephones 12 other than the calling party can be connected to the calling party's telephone 12 to establish a multi-extension call state.

Furthermore, even when the telephone 12 that is in the middle of an outside line call puts the outside line on hold and transfers it to another telephone 12, the call can be transferred to the telephone 12 north of 2 and a multi-party call state between outside and outside lines can be established.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to establish an internal multi-party call state or an internal/external multi-party call state.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing a telephone device according to an embodiment of the present invention, FIG. 2 is a flowchart corresponding to the outside line calling mode, FIG. 3 is a flowchart corresponding to the outside line receiving mode, and FIG. 4 is an internal line calling mode. 1 and 5 are flowcharts corresponding to the extension multiparty call mode, Fig. 6 is a flowchart corresponding to the internal and external multiparty call mode, and Fig. 7 is a flowchart corresponding to the extension multiparty call establishment process. It is a schematic diagram showing a voice call state. IO...Telephone device, 12...Telephone, 15...Main telephone circuit, 16...Control circuit, 18A, 18B...
Office line, 19A, 19B...Talking line, 31...Cross point circuit (exchange circuit section). Patent applicant Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru Figure 2 Figure 3 Figure 4 Figure 5 Figure 711gI! lff1S Exit Figure 6

Claims (1)

[Claims] (1) It has a main telephone circuit connected to the central office line, three or more telephones each connected to the main telephone circuit via two communication lines, and a control circuit that drives and controls the main telephone circuit. The main telephone circuit is equipped with a switching circuit section that performs exchange connections between the central office line and each telephone set, and exchange connections between each telephone set, and the control circuit receives a caller's caller's telephone by a simultaneous ringing signal from the caller's telephone. A telephone device that calls all telephones other than the calling telephone, continues to ring the remaining telephones even after any telephone answers, and connects two or more telephones other than the calling telephone to the calling telephone and/or a central office line.