JPS6155304B2 - - Google Patents
Info
- Publication number
- JPS6155304B2 JPS6155304B2 JP52101887A JP10188777A JPS6155304B2 JP S6155304 B2 JPS6155304 B2 JP S6155304B2 JP 52101887 A JP52101887 A JP 52101887A JP 10188777 A JP10188777 A JP 10188777A JP S6155304 B2 JPS6155304 B2 JP S6155304B2
- Authority
- JP
- Japan
- Prior art keywords
- call
- signal
- main device
- line
- button telephone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000005236 sound signal Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Description
【発明の詳細な説明】
本発明はボタン電話機と主装置との間が３対線
路で接続されたボタン電話装置におけるボタン電
話機の呼出方式に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calling method for a button telephone in a button telephone device in which a key telephone and a main unit are connected by a three-pair line.
ボタン電話装置では、線数減少を目的として、
ボタン電話機と主装置との間を３対線路で接続す
る方式を採用することがある。この方式は、３対
線路の各１対を音声信号、上り制御信号、下り制
御信号に割り当てたもので、通話路の交換を主装
置内で行ない、且つ制御信号は多重化して伝送し
ている。 In button telephone equipment, in order to reduce the number of lines,
In some cases, a method is adopted in which a three-pair line is used to connect the key telephone and the main device. In this system, each pair of three-pair lines is assigned to audio signals, uplink control signals, and downlink control signals, and communication paths are exchanged within the main device, and control signals are multiplexed and transmitted. .
このような方式にあつて、ボタン電話機の呼出
しを行なう場合は、音声信号用の線路の対を使用
して主装置側から呼出音信号を伝送する。このた
め、ボタン電話機が通話中の場合には音声信号用
の線路の対は通話路として使用されていることに
なるため、呼出音信号を伝送することができず、
従つて通話中の呼出しができないという欠点を有
していた。 In such a system, when a key telephone is called, a ringing tone signal is transmitted from the main device using a pair of audio signal lines. For this reason, when the button telephone is in use, the pair of audio signal lines is used as a communication path, and therefore the ringing signal cannot be transmitted.
Therefore, it has the disadvantage that it is not possible to make a call during a call.
３対線路を用いない従来の多線式ボタン電話装
置では通話中の呼出しが可能であつたため、線数
減少を目的として３対線路を使用したことにな
り、通話中の呼出しができなくなることは機能低
下となり好ましくはない。 Conventional multi-wire key telephone devices that do not use 3-pair lines allow calls during a call, so 3-pair lines were used to reduce the number of lines, and it is no longer possible to make calls during a call. This is not preferable as it results in decreased functionality.
本発明は上記した点に鑑みなされたもので、ボ
タン電話機と主装置とを３対線路で接続したボタ
ン電話装置において、ボタン電話機の通話中にも
呼出しを可能としたボタン電話機の呼出方式を提
供することを目的とする。 The present invention has been made in view of the above-mentioned points, and provides a button telephone calling method that allows calling even during a call on the button telephone in a button telephone device in which the key telephone and the main device are connected through a three-pair line. The purpose is to
以下図面を参照して本発明の一実施例を説明す
る。図において、１はボタン電話機、２はボタン
電話主装置であり、これらの間は３対線路３によ
り接続されている。３対線路３の第１の対は通話
信号線３１であり、第２および第３の対はそれぞ
れ上り制御信号線３２および下り制御信号線３３
である。ボタン電話機１において、１１は送受話
器、１２は音声信号路の切替スイツチ、１３は呼
出しスピーカ、１４は内部呼出音接続スイツチ、
１５は呼出音信号源、１６は制御回路である。こ
の制御回路１６は、例えば局線選択用ボタン１６
ａ、フツクスイツチ１６ｂ、上り制御信号線３２
に上り制御信号を送る並列直列変換回路１６ｃ、
トランス１６ｄ、下り制御信号をボタン電話機１
側で交流結合として受けるトランス１６ｅ、直列
並列変換回路１６ｆ、切替スイツチ１２の切替リ
レー１６ｇおよび接続スイツチ１４の切替リレー
１６ｈ等によつて構成されている。主装置２にお
いて、２１は呼出クロスポイント、２２は通話路
クロスポイント、２３は呼出音信号源、２４は着
信検出回路２４ａを持つ局線回路、２５は局線、
２６は制御回路である。この制御回路２６は、例
えば通話の有無を判定する判定ゲート２６ａ，２
６ｂ、判定結果の信号を多重化して出力する並列
直列変換回路２６ｃ、下り制御信号を交流結合を
もつて伝送するトランス２６ｄ、上り制御信号を
交流結合をもつて受けるトランス２６ｅおよび直
列並列変換回路２６ｆ等によつて構成されてい
る。尚、各信号経路における増幅器等は省略しあ
る。 An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a button telephone, 2 is a key telephone main device, and these are connected by a three-pair line 3. The first pair of the three-pair lines 3 is a speech signal line 31, and the second and third pairs are an upstream control signal line 32 and a downstream control signal line 33, respectively.
It is. In the button telephone 1, 11 is a handset, 12 is an audio signal path changeover switch, 13 is a ringing speaker, 14 is an internal ringing tone connection switch,
15 is a ringing tone signal source, and 16 is a control circuit. This control circuit 16 includes, for example, a station line selection button 16
a, switch 16b, upstream control signal line 32
a parallel-to-serial conversion circuit 16c that sends an uplink control signal to
Transformer 16d sends down control signal to button telephone 1
It is composed of a transformer 16e that receives AC coupling on the side, a serial-parallel conversion circuit 16f, a switching relay 16g of the switching switch 12, a switching relay 16h of the connection switch 14, and the like. In the main device 2, 21 is a calling cross point, 22 is a communication path cross point, 23 is a ringing tone signal source, 24 is a central office line circuit having an incoming call detection circuit 24a, 25 is a central office line,
26 is a control circuit. This control circuit 26 includes, for example, determination gates 26a and 2 that determine whether or not there is a call.
6b, a parallel-to-serial conversion circuit 26c that multiplexes and outputs the determination result signal, a transformer 26d that transmits the downlink control signal with AC coupling, a transformer 26e that receives the uplink control signal with AC coupling, and a serial-to-parallel conversion circuit 26f. It is composed of etc. Note that amplifiers and the like in each signal path are omitted.
上記構成のボタン電話装置において、ボタン電
話機１に対する呼出しを、局線２５および16Hz呼
出信号を検出する着信検出回路２４ａを介して主
装置２の制御回路２６で受けると、同制御回路２
６はボタン電話機１が通話中であるか否かを判定
する。仮に、着信時に無通話状態である場合、フ
ツクスイツチ１６ｂのフツクオンに伴なう信号が
直列並列変換回路２６ｆを介して判定ゲート２６
ａ，２６ｂに入つているので、判定ゲート２６ａ
側から信号がでて呼出クロスポイント２１をクロ
スするとともに、並列直列変換回路２６ｃで多重
化してボタン電話機１に伝送する。ボタン電話機
１側では、下り制御信号線３３を介して受ける下
り制御信号を直列並列変換回路１６ｆで並列化し
切替リレー１６ｇの駆動信号とする。これによ
り、切替スイツチ１２は呼出しスピーカ１３側に
閉成され、呼出音信号源２３の呼出音信号が呼出
クロスポイント２１、通話信号線３１、切替スイ
ツチ１２を介してスピーカ１３から鳴動される。
この結果、送受話器１１を上げてフツクスイツチ
１６ｂをフツクオフとすると、これを主装置２の
直列並列変換回路２６ｆで検出して通話路クロス
ポイント２２をクロスし、いわゆる通話路を形成
する。 In the key telephone device having the above configuration, when the control circuit 26 of the main device 2 receives a call to the key telephone 1 via the central office line 25 and the incoming call detection circuit 24a that detects a 16Hz calling signal, the control circuit 26 of the main device 2
Step 6 determines whether or not the button telephone 1 is in the middle of a call. If there is no call when a call is received, the signal accompanying the hook-on of the hook switch 16b is sent to the determination gate 26 via the serial/parallel converter circuit 26f.
a, 26b, so the judgment gate 26a
A signal is output from the side, crosses the paging cross point 21, is multiplexed by the parallel-to-serial conversion circuit 26c, and is transmitted to the button telephone 1. On the button telephone 1 side, the down control signal received via the down control signal line 33 is parallelized by the serial/parallel conversion circuit 16f and used as a drive signal for the switching relay 16g. As a result, the changeover switch 12 is closed to the calling speaker 13 side, and the ringing tone signal of the ringing tone signal source 23 is sounded from the speaker 13 via the calling cross point 21, the call signal line 31, and the changeover switch 12.
As a result, when the handset 11 is lifted and the switch 16b is turned off, this is detected by the serial/parallel conversion circuit 26f of the main device 2 and the communication path cross point 22 is crossed, forming a so-called communication path.
次に、着信時にボタン電話機１が通話中である
場合、切替スイツチ１２は送受話器１１側に接続
され、また通話路クロスポイント２２は通話信号
線３１と例えば局線回路２４（内線回路は省略し
てある）とを接続している。このため、更に呼出
クロスポイント２１を接続するのは好ましくない
ので、フツクスイツチ１６ｂのフツクオフに伴な
う信号と局線回路２４の着信検出回路２４ｄの信
号とから判定ゲート２６ａ，２６ｂが通話中と判
定し、判定ゲート２６ｂより信号を出力する。こ
の信号は並列直列変換回路２６ｃで多重化され、
更にトランス２６ｄ−下り制御信号線３３−トラ
ンス１６ｅ−直列並列変換回路１６ｆを介して切
替リレー１６ｈを駆動する。このリレー１６ｈの
駆動によつて、接続スイツチ１４が呼出しスピー
カ１３側に切替わる。この結果、通話中の呼出音
は、ボタン電話機１側の呼出音信号源１５からの
呼出音信号により発生するので、通話信号線３１
を音声信号のみに使用でき、通話への割込み或い
は通話の中断をする必要がない。尚、通話中の呼
出しを受け、ボタン電話機１の通話者が保留もし
くは終話した時は、改めて主装置２からの呼出し
が行なわれる。 Next, if the key telephone 1 is in use when a call is received, the changeover switch 12 is connected to the handset 11 side, and the call path cross point 22 is connected to the call signal line 31 and, for example, the office line circuit 24 (the extension circuit is omitted). ) is connected. For this reason, it is not preferable to further connect the paging crosspoint 21, so the determination gates 26a and 26b determine that a call is in progress based on the signal associated with the switch 16b turning off and the signal from the incoming call detection circuit 24d of the office line circuit 24. Then, a signal is output from the determination gate 26b. This signal is multiplexed by a parallel-to-serial conversion circuit 26c,
Furthermore, the switching relay 16h is driven via the transformer 26d, the downlink control signal line 33, the transformer 16e, and the serial/parallel conversion circuit 16f. By driving this relay 16h, the connection switch 14 is switched to the calling speaker 13 side. As a result, the ringing tone during a call is generated by the ringing tone signal from the ringing tone signal source 15 on the button telephone 1 side.
can be used only for voice signals, and there is no need to interrupt or interrupt a call. Incidentally, when a call is received during a call and the caller on the key telephone 1 puts the call on hold or ends the call, the call is made again from the main device 2.
以上述べたように、ボタン電話機と主装置とが
それぞれ独立した呼出音信号源を有する本発明の
呼出方式であれば、ボタン電話機と主装置とが３
対線路で接続されたボタン電話装置において、ボ
タン電話機の通話中にも呼出しをなすことがで
き、また通話中でない場合には主装置側から音声
呼出しをすることもできる。 As described above, in the calling method of the present invention in which the button telephone and the main device each have an independent ringing signal source, the key telephone and the main device can
In a key telephone device connected via a pair of lines, a call can be made even while the key telephone is talking, and a voice call can also be made from the main device side when the key telephone is not busy.
尚、局線呼出、内線呼出、アンテンダント呼出
し等により呼出音を変える場合には、ボタン電話
機および主装置の呼出音信号源をそれぞれ複数種
設けるようにしてもよいが、通話中の呼出音を例
えばアテンダント呼出に限定してもよい場合には
ボタン電話機側の呼出音信号源は単一種で済み、
構成が簡略化される。 In addition, when changing the ring tone depending on a central office line call, an extension call, an attendant call, etc., multiple types of ring tone signal sources for the key telephone and the main device may be provided, but the ring tone during a call may be For example, if the call is limited to an attendant call, the ring tone signal source on the key telephone side can be of a single type.
Configuration is simplified.
図は本発明の一実施例を説明するために用いた
ボタン電話装置のブロツク図である。
１……ボタン電話機、２……ボタン電話主装
置、３……３対線路、１１……送受話器、１２…
…切替スイツチ、１３……呼出しスピーカ、１４
……内部呼出音接続スイツチ、１５……呼出音信
号源、１６……制御回路、２１……呼出クロスポ
イント、２２……通話路クロスポイント、２３…
…呼出音信号源、２４……局線回路、２５……局
線、２６……制御回路、３１……通話信号線、３
２……上り制御信号線、３３……下り制御信号
線。
The figure is a block diagram of a key telephone device used to explain one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Button telephone, 2... Button telephone main device, 3... 3-pair line, 11... Handset, 12...
...Selector switch, 13...Call speaker, 14
... Internal ringing connection switch, 15... Ringing signal source, 16... Control circuit, 21... Ringing cross point, 22... Call path cross point, 23...
... Ringing tone signal source, 24 ... Office line circuit, 25 ... Office line, 26 ... Control circuit, 31 ... Call signal line, 3
2... Upward control signal line, 33... Downward control signal line.
Claims (1)
ある呼出・通話信号線及び第２・第３の対である
上り・下り制御信号線から成る３対線路で、接続
されたボタン電話装置において、前記ボタン電話
機と前記主装置とはそれぞれ独立した呼出音信号
源を有し、前記ボタン電話機が通話中でない場合
には前記主装置側の呼出音信号源から前記３対線
路の１つである呼出・通話信号線を介して前記ボ
タン電話機側へ呼出音信号を伝送し、前記ボタン
電話機が前記呼出・通話信号線を介して通話中の
場合には前記主装置から前記３対線路の１つであ
る下り制御信号線を介して前記ボタン電話機側の
呼出音信号源を起動させ呼出音信号を発生させる
ようにしたことを特徴とするボタン電話機の呼出
方式。1 A button telephone connected between the button telephone and the main device by a three-pair line consisting of a first pair of calling/talking signal lines and a second and third pair of up/down control signal lines. In the apparatus, the button telephone and the main device each have independent ringing signal sources, and when the button telephone is not in use, one of the three pairs of lines is transmitted from the ringing signal source on the main device side. A ring tone signal is transmitted to the key telephone side via the calling/talking signal line, and when the key telephone is in a call via the calling/talking signal line, the ring tone signal is transmitted from the main device to the three-pair line. A ringing method for a button telephone set, characterized in that a ringing tone signal source on the button telephone side is activated to generate a ringing tone signal via one downlink control signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10188777A JPS5435604A (en) | 1977-08-25 | 1977-08-25 | Ringing system of push-button telephone set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10188777A JPS5435604A (en) | 1977-08-25 | 1977-08-25 | Ringing system of push-button telephone set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5435604A JPS5435604A (en) | 1979-03-15 |
| JPS6155304B2 true JPS6155304B2 (en) | 1986-11-27 |
Family
ID=14312436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10188777A Granted JPS5435604A (en) | 1977-08-25 | 1977-08-25 | Ringing system of push-button telephone set |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5435604A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853290A (en) * | 1981-09-25 | 1983-03-29 | Taiko Denki Seisakusho:Kk | Incoming displaying system for key telephone device |
| JPS5862956A (en) * | 1981-10-09 | 1983-04-14 | Nippon Telegr & Teleph Corp <Ntt> | Incoming tone transmitting circuit for button telephone set |
-
1977
- 1977-08-25 JP JP10188777A patent/JPS5435604A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5435604A (en) | 1979-03-15 |
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