JPS6053978B2 - Central line relay stand handling call monitoring system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for monitoring calls handled by a central office relay in an automatic switching system having a central central relay.

Conventionally, in an automatic exchange equipped with a central office line relay board, when an extension calls a request to a central office telephone relay operator, the central office line central operator must seize the central office line and wait until the called party answers. . In other words, in order to confirm whether the called party on the captured central office line has answered, it is necessary to connect the central office line relay board and the central office line, and therefore the central office line relay board operator must check whether the called party has responded or not. Other operations will be suspended until the request is confirmed and connected to the requester. Therefore, especially during the busiest periods of incoming and outgoing calls, there are many calls waiting to be queued and there is a significant delay in response to incoming calls from the central office, resulting in a decline in response service. Furthermore, conventional pushbutton telephones that accommodate multiple central office lines and extension lines and have the function of putting the line on hold have put the central office line on hold when making a call to a central office line, etc., and the state of the central office line while handling other calls. There is no audio monitoring. SUMMARY OF THE INVENTION An object of the present invention is to provide a call monitoring system for handling calls at a central office line relay stand that eliminates response delays to incoming calls on the central office line.

The present invention provides an automatic switching system having a central office line relay board, which has at least two communication paths between the central office line relay board and the automatic switchboard, one of which is directly connected to the operator circuit and the other through a capacitor. The system is characterized by the fact that the station line relay stand operator monitors existing calls audibly while handling calls.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a relay system diagram of a switchboard explaining the outline of an embodiment of the present invention, in which the operator circuit, especially the communication path A (LA) and communication path B of the office line relay stand ATT having a transmitter T and a receiver R, is shown. (LB
) are connected to the line side terminals of the automatic exchange switching network SW, and the office line trunks COT-A and COT-B are connected to the trunk side terminals of the network SW.

MKR is a common control device, network 5W(7)1, ~
13 is a connection ring, and STN-A and STN-B are subscribers of a public station. Also, the communication path LB of the relay stand ATT is connected to LA by a capacitor so as not to interfere with the communication in LA. In Figure 1, the central office line relay stand A
The TT operator acquires the central office line trunk COT-A in a known manner and performs a dialing operation to call the public station subscriber STN-A. As a result, the central office line relay stand operator should pick up the receiver R-
Call, route LA-office line trunk COT/A-network SW link 11-STN-A route to subscriber STN
1. Monitor the status of A. - On the other hand, when a call for other handling occurs, such as a response to an incoming call from the central office line trunk COT-B, the office line relay operator operates the electric lock on the relay stand ATT to activate the common control device MKR and The line trunk COT-A is reconnected to the communication path LB via the link 11. These controls allow the station line relay board operator to continuously monitor the status of subscriber STN-A. It should be noted that the office line trunk operator can respond to a call to the office line trunk COT-B using a known method and connect via the link 13 without causing any delay.
During this time, the person handling the central office line relay stand ATT is B-SW (7) 1 on R.
Subscriber STN-A via route 21 COT●A-STN●A
The status of can be monitored. Next, the person handling the station line relay stand is listed under -A.
When the relay station ATT confirms by voice that it has responded,
The operator operates the electric lock to put the office line trunk COT-B on hold and reconnects the office line trunk COT-A to the communication path LA via link 11. This makes it possible to communicate with the central office line relay board operator and S Ame-A, and thereafter send COT to the requesting caller using a known method.
- Connect A to complete the request origination connection. FIG. 2 shows a circuit according to an embodiment of the present invention, and in the following, switching of communication path links by operating buttons on a relay stand will be explained in particular.

First, the office line relay board operator uses a known method to connect the office line trunk CO.
After capturing T-A, operate the electronic key EK.

The common control device MKR receives the information at the relay stand identification relay EKO installed corresponding to the relay stand, and connects one contact E of KO on the battery E.
It maintains itself through the path of kOO - contact point TkaO - ground air. In order to identify the accommodation position of the central office line trunk COT-A connected to the relay stand, the common control device MKR transmits one contact point x-1 one contact point EkO3-SROO A(d)-SRA
- TGO operates the trunk group identification relay TGO that identifies the 10th position on the path of battery E. It is self-maintained along the path of one earth-air contact TkbO one contact TgOl-TGO one battery E.
Then the trunk identification relay TNO-TN in the trunk group
The operating circuit is composed of contacts TgO2 to TgOlO,
The relay TNO that identifies the unit is one contact x-1 one contact EkO3-SROO! One LA(d)-SRB one contact T
Operate along the path of gO2-゛゛゛1 battery E, and connect the ground air to the contact point T.
The path of kbO-TnO2-TNO and battery B is self-maintaining. Through this operation, the accommodation position of the central office line trunk COT-A is identified. Next, a check relay TK is used to verify that one each of TG and TN has operated using a known contact development circuit.
works. As a result, the relay RL of the central office line trunk COT-A is connected to the ground (one contact Tk3 one contact TgOll one contact Tn).
It operates on the path O'-RL-Battery E, while one contact on earth air r1-contact b-SRC top A (C line) one contact Hm (LA)
-H in the path of switch holding electromagnet HM (LA) and battery E
Restore M (LA) and connect relay stand and office line trunk COT
- Release the connection with A. The check auxiliary relay TKA is connected to the ground contact T by the operation of the check relay TK.
The k2-TKA-Battery E circuit restores slowly. This TKA
is restored, the switch selection electromagnet SM (LB
) is one contact point Tkal one contact EkO2 one contact XOO
- SM (LB) operates in the path of one battery E), and then the holding electromagnet HM (LB) is connected to the earth with one contact Tka2 and one contact x-2
1 contact TgOl 2 1 contact TnOl 1 holding electromagnet HM (1
7B) Operates on the upper route and closes the switch, and connects the relay stand and subscriber STN-A on the route of relay stand communication path - capacitor C top B (a/b) - COT A - subscriber STNl-A. Configure the communication path. In this connection state, the relay console is connected to the subscriber ST.
The status of N-A can be monitored. Also, the TKA
Due to the slow recovery of the relay, the always-operating relay TKB is gradually restored in the circuit of one earth contact Tka3-TKB one battery E, and one earth contact TkbO one contact TgOl-■℃ Battery E and earth air one contact TkbO one contact The trunk group identification relay TGO and the trunk unit identification relay TNO are restored using the TnO2-TNO one battery E circuit. Due to the restoration of these relays TGO and TNO, the restoration relay RL of the central office line trunk COT-A is switched to the ground (1 contact Tkll 1 contact TgOll-contact TnO3-R)
The path between L and battery E is restored, and the holding relay 11M (LB)
Earth air one contact RI one contact b-SRC-contact Hm (LB)
-HM (LB) holds the path of one battery E. When the subscriber STN-A responds, the handler confirms it audibly and places the call being handled on hold in a known manner.

The operator operates the EK electric lock in order to talk to subscriber STN-A. The common control device receives this information through the relay EKO and maintains it as described above. The common control device (1) connects the ground air contact point y- to identify the accommodation position of the office line trunk COT-A connected to the relay stand ATT.
1-contact EkO4-rectifier SR top B(d)-SRA-T
Activate the π-sword relay that identifies the 10th position using the route of GO and battery E. This sword relay is self-maintained through the path of one earth contact, one contact TkbO, one contact TgOl, one TGO, and one battery E. Next, the operating circuit of the unit identification relay TNO-TN relay is set to Tg.
A relay consisting of O2~TgOlO and identifying the unit...O is the earth contact point y-1-EkO4 on B(d)-SR
It operates in the path of B-1 contact TgO2-D sow battery E and maintains itself in the same way. With the above operations, the location where the central office line trunk COT-A is accommodated is identified. Next, T using a known end point expansion circuit.
A check relay TK operates to verify that one each of G and TN has operated. Next, the central office trunk COT-A
The restoration relay RL is one contact Tkl one contact Tg (1)
11 One contact TnO3-RL operates on the path of one battery E, HM
(LB) is restored and the connection between the relay stand and COT-A is released. In addition, TKA slowly recovers when TK operates, and when TKA recovers, selection electromagnet SM (LA
) is magnetic-Tkal-EkO2-YO magnetic-SM (LA
) works on the above route. Next, holding electromagnet HM (LA)
gajiki-Tka2-y-2-TgOl2-TnOO-H
It operates on the path on M (LA) and closes the switch, and connects the relay stand communication path - capacitor C - communication path LA (a/b) - COT.
- A - subscriber STN - Route between relay stand and subscriber STN
- Configure a communication path with A. In this connected state, the relay stand can normally communicate with subscriber STN-A. Furthermore, the circuit on TKB-Tka3-TKB was slowly restored.
Earth Qi-TkbO-TgO'-TGO and Earth Qi-Tkb
The circuit on O-TnO2-TNO restores relay TCO,f. From these relays TGO and TNO, the RL relay of the central office line trunk COT-A is
Recover via the path on l-TgOll-TnO3-RL and move the holding electromagnet HM (LA) to Earth-rl-b-SRC-Hm
It is held on the path on (LA)-HM(LA). Thereafter, the handler sends the central office trunk COT-A to the requesting party using a known method.
Connect and request outgoing connection and complete. Note that the same connection and switching procedures are performed for the central office line trunk COT-B, so a description thereof will be omitted.

As described above, the present invention has the effect of eliminating response delays by providing at least two communication paths between the central branch relay board and the automatic exchange, thereby making it possible to monitor previously handled calls while a call is being handled.

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram of an exchange illustrating an embodiment of the present invention, and FIG. 2 is a detailed circuit diagram of the main parts shown in FIG. 1.

Claims (1)

[Claims] 1. In an automatic exchange equipped with a central office relay board, there are at least two communication paths between the central office central relay board and the automatic switching facility, one of which is connected directly to the operator circuit and the other through a capacitor,
A central office line relay board handling call monitoring system characterized in that a central office line relay board operator monitors previously handled calls by voice while handling a call.