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JPS6134710B2 - - Google Patents
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JPS6134710B2 - - Google Patents

Info

Publication number
JPS6134710B2
JPS6134710B2 JP7570079A JP7570079A JPS6134710B2 JP S6134710 B2 JPS6134710 B2 JP S6134710B2 JP 7570079 A JP7570079 A JP 7570079A JP 7570079 A JP7570079 A JP 7570079A JP S6134710 B2 JPS6134710 B2 JP S6134710B2
Authority
JP
Japan
Prior art keywords
call
service
subscriber
cwsub
call waiting
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
Application number
JP7570079A
Other languages
Japanese (ja)
Other versions
JPS56770A (en
Inventor
Shogo Shibano
Shigeru Mugitani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
NTT Inc
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP7570079A priority Critical patent/JPS56770A/en
Publication of JPS56770A publication Critical patent/JPS56770A/en
Publication of JPS6134710B2 publication Critical patent/JPS6134710B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/58Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Description

【発明の詳細な説明】 本発明は自動交換機における通話中着信方式に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a call waiting system in an automatic switchboard.

自動交換機におけるサービスの1つとて通話中
着信サービスがある。以下、第1、第2図により
従来の通話中着信サービスを説明する。図中、
CW SUBは通話中着信サービスを受けるサービ
ス加入者、SUBは一般加入者、SCは座席予約サ
ービス、馬券予約サービス等行うサービスセン
タ、SWUは通話中着信切替装置、CWLは通話中
着信リンク、CWEは通話中着信装置、LINKは主
リンク、OGTは出トランクICTは入トランク、
PBRECはPB受信器である。
One of the services provided by automatic exchanges is a call waiting service. The conventional call waiting service will be explained below with reference to FIGS. 1 and 2. In the figure,
CW SUB is a service subscriber who receives a call waiting service, SUB is a general subscriber, SC is a service center that provides seat reservation service, horse racing ticket reservation service, etc., SWU is a call switching device, CWL is a call waiting link, and CWE is a call waiting service. Call terminating device, LINK is the main link, OGT is the outgoing trunk, ICT is the incoming trunk,
PBREC is a PB receiver.

今、通話中着信サービスを受けるサービス加入
者CWSUBがSWU−LINKrOGT−SC(PBREC)
の経路でサービスを受けている状態を考える。サ
ービスセンタSCによるサービスは加入者のダイ
ヤルするPB信号を受信することにより決定され
る。このため、サービス加入者CWSUBがサービ
スコードダイヤル中に他の加入者SUBからの着
信があると、切替装置SWUのB端子が話中であ
るため自動的にSWUのC端子着信となる。
SWUC端子着信により、図示されていないコー
ルウエーテイングリンクコントローラ
CWLCONTが起動され、通話中着信リンクCWL
を介してSWUと通話中着信装置CWE間を接続す
る。これにより、SWUのA,B,C端子がCWL
を介してCWEに接続される。この結果、
CWSUBに通話中着信があつた旨の着信表示音を
CWEより送出する。着信表示音をCWEより
CWSUBにのみ送出するため、CWSUB−SC間の
トレーンをCWE内で一定時間断とする。このた
め、CWSUBのダイヤルするサービスコードが信
号割れし、誤ダイヤルとなつてSCに送出されて
しまう。このためCWSUBの意図に反したサービ
スコードがSC内に登録されてしまいサービス上
問題であり、トラブルの原因ともなつていた。
Service subscriber CWSUB who currently receives call waiting service is SWU-LINKrOGT-SC (PBREC)
Consider a situation in which a service is received through the route . The service provided by the service center SC is determined by receiving the PB signal dialed by the subscriber. Therefore, if the service subscriber CWSUB receives a call from another subscriber SUB while dialing the service code, the call will automatically be received at the SWU's C terminal since the B terminal of the switching device SWU is busy.
When a call arrives at the SWUC terminal, the call waiting link controller (not shown)
CWLCONT is activated and the incoming call link CWL
Connect between SWU and call waiting device CWE via. This causes the A, B, and C terminals of SWU to become CWL.
connected to CWE via. As a result,
An incoming call display sound indicating that there is a busy call on CWSUB.
Send from CWE. Incoming call display sound from CWE
In order to send only to CWSUB, the train between CWSUB and SC is interrupted for a certain period of time within CWE. As a result, the signal of the service code dialed by CWSUB is distorted, resulting in an incorrect dial and being sent to the SC. For this reason, a service code that was contrary to CWSUB's intention was registered in the SC, which caused a service problem and caused trouble.

第2図は第1図における通話中着信装置CWE
の従来回路を示す。第2図において、A,Eは継
電器、a,chm,cha,itは継電器接点、RETO
は線輪、Cはコンデンサ、CRBTは着信表示音を
示す。CWSUBがSCよりサービスを受けている
状態において、SUBより着信があると、SWU
A,B,C端子はCWLを介して通話中着信装置
CWEに接続される。加入者CWSUBとSC間の通
話は継電器接点chaが動作していないので継続さ
れる。加入者CWSUBに接続される継電器Aが動
作すると、その接点aが閉じ、着信表示音送出が
準備される。この状態で図示されていないIT継
電器が着信表示音送出時間だけ動作し、継電器A
の3次巻線より着信表示音CRBTがCWSUBへ送
出される。SCに対する通話はIT継電器が動作し
ている間切断される。この時CWSUBがSCに対
してサービスコードをダイヤルしていた場合、信
号がこの間断してしまい、サービスコードの信号
割れが生じ、誤ダイヤルとなつてSCに対して送
出されてしまう。
Figure 2 shows the call waiting device CWE in Figure 1.
A conventional circuit is shown. In Figure 2, A, E are relays, a, chm, cha, it are relay contacts, RETO
indicates wire ring, C indicates capacitor, and CRBT indicates incoming call display tone. While CWSUB is receiving service from SC, when a call is received from SUB, SWU
A, B, and C terminals are call waiting devices via CWL.
Connected to CWE. The call between subscriber CWSUB and SC continues since relay contact cha is not operational. When relay A connected to subscriber CWSUB operates, its contact a closes and preparations are made to send out an incoming call indication tone. In this state, the IT relay (not shown) operates for the time it takes to send out the incoming call display tone, and relay A
The incoming call display tone CRBT is sent from the tertiary winding to CWSUB. Calls to the SC are disconnected while the IT relay is activated. If CWSUB is dialing the service code to the SC at this time, the signal will be interrupted during this time, resulting in a signal break in the service code, resulting in an incorrect dial and being sent to the SC.

本発明の目的は、上記した従来技術の問題を解
決し、かつきわめて経済的に通話中着信サービス
の質を向上させ得る通話中着信方式を提供するに
ある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a call waiting system that solves the problems of the prior art described above and can improve the quality of call waiting services in an extremely economical manner.

上記目的を達するため、本発明は、通話中着信
サービスを受けるサービス加入者がサービスセン
タと通話中に第3者着信があつた場合、通話中着
信装置よりサービスセンタに対し特殊な信号を送
出し、通話中着信時の該サービス加入者のダイヤ
ルを無効にするものである。
In order to achieve the above object, the present invention provides that when a service subscriber who receives a call waiting service receives an incoming call from a third party while talking with a service center, a call waiting device sends a special signal to the service center. , which disables the service subscriber's dialing when a call is received during a call.

以下、第3図により本発明の一実施例を説明す
る。第3図において、A,Eは継電器、a,
chm,cha,itは継電器接点、RETO,1は線
輪、Cはコンデンサ、CRBTは着信表示音、OSC
はPB信号の高群周波数2波を組合わせた信号音
である。
An embodiment of the present invention will be described below with reference to FIG. In Fig. 3, A and E are relays, a,
chm, cha, it are relay contacts, RETO, 1 is wire, C is capacitor, CRBT is incoming call display tone, OSC
is a signal tone that combines two high group frequency waves of the PB signal.

今、通話中着信サービス加入者CWSUBがサー
ビスセンタSCよりサービスを受けている状態に
おいて、第3者の加入者SUBより着信がある
と、切替装置SWUのA,B,C端子は通話中着
信リンクCWLを介して通話中着信装置CWEに接
続される。サービス加入者CWSUBとサービスセ
ンタSC間の通話は継電器接点chaが動作していな
いので継続される。加入者CWSUBに接続される
継電器Aが動作するとその接点aが閉じ、着信表
示音CRBTが準備される。この時、PB信号の高
群周波数2波を組合わせた信号音OSCが線輪
RETOを介して通話線に挿入される。これにより
PB信号高群周波数1/H1,H2,H3、低群周波数
1/L1,L2,L3,L4の組合せのバランスが高群
周波数2/H1,H2,H3又は3/H1,H2,H3とな
るためとれなくなつてしまう。この結果、PB受
信器PBRECの特性により無効ダイヤルとして処
理される。さらにOSCはCWSUBのフツキング操
作まで通話線に挿入されることとなり、通話中着
信時からCWSUBの応答までのPB信号はSCにて
無効ダイヤルとして処理される。
Now, when call waiting service subscriber CWSUB is receiving service from service center SC, if a call is received from a third party subscriber SUB, the A, B, and C terminals of switching device SWU will be connected to call waiting link. Connected to the call waiting device CWE via CWL. The call between the service subscriber CWSUB and the service center SC continues since the relay contact cha is not operational. When relay A connected to subscriber CWSUB operates, its contact a closes, and the incoming call display tone CRBT is prepared. At this time, the signal sound OSC, which is a combination of two high group frequency waves of the PB signal, is
Inserted into the call line via RETO. This results in
The balance of the combination of PB signal high group frequency 1/H 1 , H 2 , H 3 and low group frequency 1/L 1 , L 2 , L 3 , L 4 is high group frequency 2/H 1 , H 2 , H 3 Or it becomes 3/H 1 , H 2 , H 3 and cannot be removed. As a result, it is treated as an invalid dial due to the characteristics of the PB receiver PBREC. Furthermore, the OSC will be inserted into the call line until the CWSUB hooking operation, and the PB signal from the time the call arrives during a call until the CWSUB responds will be processed as an invalid dial by the SC.

この結果、通話中着信時のサービスコード信号
割れによるサービスセンタSCにおける誤ダイヤ
ル受信を防止できる。
As a result, it is possible to prevent incorrect dialing from being received at the service center SC due to service code signal cracking when a call arrives during a call.

本実施例においては、加入者ダイヤルを無効ダ
イヤルとする特殊な信号として、PB信号の高群
周波数を組合せた信号を使用したが、低群周波数
を組合せても同様に行うことが出来ることは容易
に類推可能のため説明を省略する。また特殊な信
号として、本実施例ではPB信号を使用したが、
その他の周波数においても、この周波数検出装置
をPBREC内に組込むことにより、この信号の到
来している間は無効ダイヤルとして処理すること
ができることも言うまでもない。
In this example, a signal that combines the high group frequencies of the PB signal was used as a special signal to make the subscriber dial an invalid dial, but it is easy to do the same thing by combining the low group frequencies. The explanation is omitted because it can be analogized to. In addition, as a special signal, the PB signal was used in this example, but
It goes without saying that for other frequencies as well, by incorporating this frequency detection device into the PBREC, it is possible to process the dialing as invalid while this signal is arriving.

さらに、IT継電器が動作している間に、“#+
#”または“*+*”などの特殊PBダイヤルを
線輪PETOを介して送出し、受信装置側でこの
PBダイヤルを受信すると、以降の加入者からの
ダイヤルを無効ダイヤルとして処理することなど
でもよい。
Additionally, while the IT relay is operating, “#+
A special PB dial such as "#" or "*+*" is sent through the wire PETO, and the receiving device side receives this number.
When a PB dial is received, subsequent dials from the subscriber may be treated as invalid dials.

以上詳細に説明した如く、本発明により通話中
着信サービス加入者がダイヤル操作中に第3者着
信があつた場合の信号割れによる誤ダイヤルを防
止することが出来、これにより通話中着信サービ
スの質的向上を図ることが出来る。
As explained in detail above, according to the present invention, it is possible to prevent incorrect dialing due to signal breakage when a third party call is received while a call waiting service subscriber is dialing, thereby improving the quality of the call waiting service. You can improve your goals.

また既設の交換設備を利用するためきわめて経
済的に実施することが出来る。
Also, since it uses existing replacement equipment, it can be implemented extremely economically.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は通話中着信サービスの1例を示す中継
方式図、第2図は従来の通話中着信装置を示す
図、第3図は本発明による通話中着信装置の1実
施例を示す図である。 CWSUB……通話中着信サービスを受ける加入
者、SUB……一般加入者(第3者)、SC……サー
ビスセンタ、PBREC……PB受信器、SWU……
通話中着信切替装置、CWL……通話中着信リン
ク、CWE……通話中着信装置、LINK……主リン
ク、OGT……出トランク、ICT……入トラン
ク、CRBT……着信表示音、OSC……特殊信号
音。
FIG. 1 is a relay system diagram showing an example of a call waiting service, FIG. 2 is a diagram showing a conventional call waiting device, and FIG. 3 is a diagram showing an embodiment of the call waiting device according to the present invention. be. CWSUB...Subscriber receiving call waiting service, SUB...General subscriber (third party), SC...Service center, PBREC...PB receiver, SWU...
Call switching device, CWL... Call waiting link, CWE... Call waiting device, LINK... Main link, OGT... Outgoing trunk, ICT... Incoming trunk, CRBT... Incoming call display tone, OSC... Special signal tone.

Claims (1)

【特許請求の範囲】[Claims] 1 通話中着信サービスをを受けるサービス加入
者に対し、第3者である加入者からの着信があつ
たとき、該サービス加入者のフツキング操作等に
より該サービス加入者と第3者との通話に変わる
通話中着信サービスにおいて、該サービス加入者
のダイヤル操作中に第3者着信があつた場合、該
サービス加入者に対しては着信表示音を、ダイヤ
ル受信装置に対しては特殊な信号を送出すること
により、通話中着信時の該加入者ダイヤルを前記
ダイヤル受信装置に対して無効ダイヤルとするこ
とを特徴とする通話中着信方式。
1. When a service subscriber who receives a call waiting service receives a call from a third party subscriber, the call between the service subscriber and the third party is interrupted due to the hooking operation of the service subscriber, etc. In the changing call waiting service, if a third-party call is received while the service subscriber is dialing, an incoming call display tone will be sent to the service subscriber and a special signal will be sent to the dial receiving device. By doing so, the subscriber's dial when a call is received during a call is set as an invalid dial for the dial receiving device.
JP7570079A 1979-06-18 1979-06-18 Incoming system during communication Granted JPS56770A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7570079A JPS56770A (en) 1979-06-18 1979-06-18 Incoming system during communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7570079A JPS56770A (en) 1979-06-18 1979-06-18 Incoming system during communication

Publications (2)

Publication Number Publication Date
JPS56770A JPS56770A (en) 1981-01-07
JPS6134710B2 true JPS6134710B2 (en) 1986-08-08

Family

ID=13583748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7570079A Granted JPS56770A (en) 1979-06-18 1979-06-18 Incoming system during communication

Country Status (1)

Country Link
JP (1) JPS56770A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0694234B2 (en) * 1984-01-17 1994-11-24 富士写真フイルム株式会社 Photosensitive lithographic printing plate

Also Published As

Publication number Publication date
JPS56770A (en) 1981-01-07

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