JPH055218B2 - - Google Patents
Info
- Publication number
- JPH055218B2 JPH055218B2 JP58134339A JP13433983A JPH055218B2 JP H055218 B2 JPH055218 B2 JP H055218B2 JP 58134339 A JP58134339 A JP 58134339A JP 13433983 A JP13433983 A JP 13433983A JP H055218 B2 JPH055218 B2 JP H055218B2
- Authority
- JP
- Japan
- Prior art keywords
- station
- trunk
- originating
- next station
- pseudo
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/14—Signalling existence of persistent "off-hook" condition
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、発信端末の送受器外し等により次位
局が起動され続けた場合の両局間のトランクの強
制開放と発信端末のロツクアウトを行なうための
制御方式に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention forcibly opens the trunk between both stations and locks out the originating terminal when the next station continues to be activated due to removal of the handset of the originating terminal, etc. Regarding the control method for
従来の方式では、発信局が次位局を無効に起動
し続けた場合、次位局では発信局に対し話中音
（BT）等を一定時間送出した上、強制的に自局
内の共通装置を開放していた。しかし発信局側か
らの起動条件（例えばSS信号、ループ信号等）
が発信端末の復旧によつて消減しない限り両局間
を接続するトランクは開放されなかつた。
In the conventional system, if the originating station continues to invalidly activate the next station, the next station sends a busy tone (BT) etc. to the originating station for a certain period of time, and then forcibly disconnects the common equipment within its own station. was open. However, the activation conditions from the transmitting station side (e.g. SS signal, loop signal, etc.)
The trunk connecting the two stations would not be opened unless the problem was reduced by the recovery of the calling terminal.
このように、従来方式では発信端末が無効に保
持されている限り、前記トランクも無効に保留さ
れることとなり、特にトランク数の少ない場合、
次の発信時はトランク話中頻度大となつて混乱を
来たす。 In this way, in the conventional method, as long as the originating terminal is held invalid, the trunk is also held invalid, especially when the number of trunks is small.
The next time the call is made, the trunk will be busy, causing confusion.
本発明の目的は、このような両局間のトランク
の無効保留を防止するためのロツクアウト方式を
提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a lockout method for preventing trunks between both stations from being held invalid.
その目的のため、本発明は、発信局からの選択
信号が次位局に長時間に亘つて送出されず、かつ
発信局側からトランクを介しての次位局への起動
信号が切断されない場合には、次位局から該トラ
ンクを介し疑似応答信号を話中音送出時間帯に亘
つて発信局に返送する一方、発信局では、話中音
送出終了に伴う疑似応答信号の切断を以て、強制
復旧の一環として、次位局への起動信号の切断に
よつて両局間のトランクを開放するとともに、発
信端末を強制的にロツクアウト状態におくか、あ
るいは加入者回線を強制的に切断するようにした
ものである。
For that purpose, the present invention provides a method for detecting cases where the selection signal from the originating station is not sent to the next station for a long time and the activation signal from the originating station to the next station via the trunk is not disconnected. In this case, the next station sends a pseudo-response signal back to the originating station via the trunk during the busy tone transmission time period, while the originating station is forced to respond by disconnecting the pseudo-response signal when the busy tone transmission ends. As part of the recovery, the trunk between the two stations will be opened by disconnecting the activation signal to the next station, and the calling terminal will be forcibly placed in a lockout state or the subscriber line will be forcibly disconnected. This is what I did.
第１図は前記発信局および次位局をトランクで
接続した中継方式図である。また第２図は従来方
式、第３図は本発明の方式に基く両局間の制御信
号送受信を示す動作図である。
FIG. 1 is a diagram of a relay system in which the originating station and the next station are connected by a trunk. Further, FIG. 2 is an operational diagram showing control signal transmission and reception between the two stations based on the conventional method and FIG. 3 based on the method of the present invention.
先ず第１図および第２図により従来方式の動作
を説明する。 First, the operation of the conventional system will be explained with reference to FIGS. 1 and 2.
発信端末Ｔから発信(A)すると公知の如く、処理
装置CC１の制御により目的のルートのトランク
TRK１が起動され、送信用制御線SS１がオンと
なる。これによりトランクTRK２の受信用制御
線SR２がオンとなつて次位局が起動される。次
位局ではやはり公知の如く処理装置CC２の制御
によりトーントランクTNTへ接続し発信局に発
信音（DT）を送出する。この時一定時間以上選
択信号が受信されない場合はTNTから発信局へ
話中音（BT）が送出され、発信端末がさらに復
旧しない場合はTNTが強制切断されかつトラン
クTRK２はロツクアウトされていた(B)。しかし
トランクは無効に保留され続けていた。 As is well known, when a call is made (A) from the calling terminal T, the trunk of the desired route is
TRK1 is activated and the transmission control line SS1 is turned on. As a result, the reception control line SR2 of the trunk TRK2 is turned on and the next station is activated. As is well known, the next station connects to the tone trunk TNT under the control of the processing device CC2 and sends a dial tone (DT) to the originating station. At this time, if the selection signal was not received for a certain period of time or more, a busy tone (BT) was sent from TNT to the originating station, and if the originating terminal did not recover further, TNT was forcibly disconnected and trunk TRK2 was locked out (B ). However, the trunk continued to be held invalidly.
第１図および第３図により以下に本発明の方式
を説明する。TNTへ接続し一定時間DTを送出
したのちBTを送出する迄は従来方式と同じであ
る。この時第３図にハツチングにて示されるよう
にBT送出中、トランクTRK２からTRK１へ疑
似応答信号を返送する(C)。これによりBT切断時
疑似応答信号が復旧し、発信局OXでは次位局側
が切断されたことを識別して強制復旧を開始す
る。すなわち、次位局TXへの起動信号SS１を切
断し、さらに発信端末Ｔを公知の方法（加入者回
路LCのロツクアウト）によりロツクアウトする
(D)。このためトランクTRK１およびTRK２はこ
の時点で開始され、次の呼のために使用し得るこ
ととなつて中継線の有効利用が可能となる。 The system of the present invention will be explained below with reference to FIGS. 1 and 3. FIG. The process from connecting to TNT and transmitting DT for a certain period of time to transmitting BT is the same as the conventional method. At this time, as shown by hatching in FIG. 3, a pseudo response signal is sent back from trunk TRK2 to TRK1 during BT transmission (C). As a result, the BT disconnection pseudo-response signal is restored, and the originating station OX identifies that the next station has been disconnected and starts forced recovery. That is, the activation signal SS1 to the next station TX is cut off, and the transmitting terminal T is further locked out by a known method (locking out the subscriber circuit LC).
(D). Therefore, trunks TRK1 and TRK2 are started at this point and can be used for the next call, allowing effective use of trunk lines.
以上述べた如く本発明の方式によれば、発信局
からの選択信号が次位局へ長時間送出されず、発
信局からの起動信号が切断されない場合に次位局
から疑似応答信号を返送し、一定時間後これを切
断することにより、発信局側に容易に両局間のト
ランクを開放せしめることが可能となる。また発
信端末をも強制的にロツクアウトすることが可能
となる。これにより高価な中継線を無効に保留す
ることがなくなり、使用上の利便を大幅に高める
ことが可能となる。
As described above, according to the method of the present invention, when the selection signal from the originating station is not sent to the next station for a long time and the activation signal from the originating station is not disconnected, the next station returns a pseudo response signal. By disconnecting this after a certain period of time, it becomes possible for the originating station to easily open the trunk between the two stations. It is also possible to forcibly lock out the calling terminal. This eliminates the need to hold expensive trunk lines ineffectively, making it possible to greatly improve the convenience of use.
第１図は本発明の方式例を示す中継方式図、第
２図、第３図は各々従来方式および本発明の方式
を示す動作図である。
Ｔは発信端末、OXは発信局、TXは次位局、
TRK１は発信局のトランク、TRK２は次位局の
トランク、CC１およびCC２は各々発信局および
次位局の中央処理装置、SS１，SS２は送信用の
制御線、SR１，SR２は受信用の制御線、TNT
は発信音（DT）または話中音（BT）を発信局
OXへ送出するためのトーントランクを示す。
FIG. 1 is a relay system diagram showing an example of the system of the present invention, and FIGS. 2 and 3 are operation diagrams showing the conventional system and the system of the present invention, respectively. T is the transmitting terminal, OX is the transmitting station, TX is the next station,
TRK1 is the trunk of the originating station, TRK2 is the trunk of the next station, CC1 and CC2 are the central processing units of the originating station and the next station, respectively, SS1 and SS2 are control lines for transmission, and SR1 and SR2 are control lines for reception. ,TNT
transmits dial tone (DT) or busy tone (BT)
Shows the tone trunk for sending to OX.
Claims (1)
ている交換接続系において、発信局からの選択信
号が次位局に長時間に亘つて送出されず、かつ発
信局側からトランクを介しての次位局への起動信
号が切断されない場合、次位局から該トランクを
介し疑似擬似応答信号を話中音送出時間帯に亘つ
て発信局に返送する一方、発信局では、話中音送
出終了に伴う疑似応答信号の切断を以て、強制復
旧の一環として、次位局への起動信号の切断によ
つて両局間のトランクを開放するとともに、発信
端末を強制的にロツクアウト状態におくか、ある
いはは加入者回線を強制的に切断するようにし
た、交換システムにおけるロツクアウト方式。1. In a switched connection system in which the originating station and the next station are connected via a trunk, the selection signal from the originating station is not sent to the next station for a long time, and the selection signal from the originating station is not sent via the trunk. If the activation signal to the next station is not disconnected, the next station sends a pseudo-pseudo response signal back to the originating station via the trunk during the busy tone transmission time period, while the originating station transmits the busy tone. By disconnecting the pseudo-response signal upon termination, as part of forced recovery, the trunk between the two stations is opened by disconnecting the activation signal to the next station, and the calling terminal is forcibly placed in a lockout state, or Alternatively, a lockout method in a switching system that forcibly disconnects subscriber lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13433983A JPS6027262A (en) | 1983-07-25 | 1983-07-25 | Lockout system of exchange system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13433983A JPS6027262A (en) | 1983-07-25 | 1983-07-25 | Lockout system of exchange system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6027262A JPS6027262A (en) | 1985-02-12 |
| JPH055218B2 true JPH055218B2 (en) | 1993-01-21 |
Family
ID=15126035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13433983A Granted JPS6027262A (en) | 1983-07-25 | 1983-07-25 | Lockout system of exchange system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027262A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57141484U (en) * | 1981-03-02 | 1982-09-04 |
-
1983
- 1983-07-25 JP JP13433983A patent/JPS6027262A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6027262A (en) | 1985-02-12 |
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