JPS6026338B2 - Attendant call path division control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a relay stand control system for a private automatic telephone exchange, which simplifies the operation and reduces the burden on the operator of a link release type wireless central office line relay stand.

FIG. 1 shows a conventional branch telephone branch switch branch control system for dividing communication paths. In Figure 1, COT is a central office trunk, MKR is a marker, CDL is a code link, and P
R indicates a seat register, and ATT indicates a relay stand.

A central office line relay stand operator (hereinafter referred to as
When a person (referred to as a handler) presses a response plow or call button, a marker (MKR) is activated from the seat register (PR). MKR selects a trunk (not shown in Figure 1) of the central office trunk (COT) in which the R relay is operating when making an incoming call response connection, and selects an empty COT when making a call originating connection, and at the same time selects a trunk that has an operating R relay (not shown in Figure 1) of the central office trunk (COT), and selects an empty COT when making a call response connection. Close (CDL). MKR is restored after trunk selection and CDL opening confirmation. In PR, when operating a central line response, the OK relay is kept in operation based on gun reinforcement completion information from the MKR, and when a request is made, the OK relay is kept in operation when the handler operates the call button.

Although not shown in Figure 1, the PR LK relay is connected to the CD
It is a relay that operates when the L closure is confirmed. When the P relay of the COT is activated by the LK relay operation, the PA relay is activated although it is not shown in FIG. The PA relay is an IJ relay that remembers that the operator has intervened with respect to the COT, and retains it until the COT is restored. Since the PK relay does not operate in PR, the operator faces the central office line and can communicate with the operator over the central office line.

In the normal connection state, the operator then performs the extension connection operation (operating the number buttons on the relay stand). When the extension connection operation is performed, MKR is started from PR, and if the extension subscriber is empty, MKR to P.
The call information is transferred to the R-via COT.

In the COT, when call information arrives, an RTA relay (not shown in FIG. 1) operates and a call signal is sent to the extension subscriber. When the extension subscriber hears this ringing signal and answers it, the communication between the extension subscriber and the central office line becomes possible and the ATT R
The E lamp goes out. During the above exchange connection,
If the station line relay stand operator needs to perform other response operations, etc.
The station line relay board operator performs the station line hold operation, and after completing other response operations, etc., re-intervenes with the extension side or the station side.
The following two types of cases exist when the above-mentioned station line relay board-level person performs the station line holding operation. i) After the operator receives the office line and before the extension connection operation; and ii) After the operator accepts the office line and after the extension connection operation. If the operator performs a hold operation in the state (i) above, the CDL will be released and all PR relays will be restored, but the COT and central office lines will be held and the relay stand (ATT)
The lamp of the pending nail (RE gold) flashes to display the pending status.

In addition, if the operator performs a hold operation in the state described in (ii), C.
The DL is released and all PR relays are restored, but the COT and central office lines are suspended and the ATT RE nail lamp flashes.
A hold display is displayed. In this case, if the extension subscriber responds before the operator intervenes again, communication between the extension subscriber and the central office line becomes possible and the RE lamp of the ATT goes out. When the operator intervenes in the suspended COT described above, by pressing the RE button corresponding to the blinking RE lamp on the ATT, the RE relay of the PR is activated and the MKR is activated from the PR.

In the MKR, when activated from the PR, the CDL relay and HC relay operate, although they are not shown in FIG. Since the PA relay holds the COT in the pending state, the MKR selects the COT in the pending state by the trunk selection circuit and closes the CDL. Once the connection is complete, the marker transfers recovery information to the PR. When the PR receives recovery information from the MKR, the MRL relay (not shown in FIG. 1) is activated, and the mrL make yabu point relay PK relay is activated from the holding state of the RE relay. Also, when the CDL is opened, the PR LK relay operates, and when the LK relay operates, the COT P relay operates and the P
The relay contact divides the COT into the extension line side and the office line side. When the PR PK relay operates, the operator turns to the extension and intervenes. In this case, when intervening in a COT that is on hold before the extension connection operation, the user presses the ○K button to restore the PR OK relay and PK relay, and then turns to the central office line, which increases the operator's push plow operation by one more time. Alternatively, although it is not shown in Figure 1, when the MKR connection is completed, the RE relay is
If the OK relay is operated instead of the PK relay at the rL make contact, operator operation is not required when intervening before the extension connection operation described above, but if the extension subscriber is on hold after the extension connection operation, the extension subscriber is on hold. When intervening in the current COT, the user must first press PK wholesale and intervene on the extension side, and in either case, one more operation is required. The purpose of the present invention is to eliminate the above-mentioned drawbacks, and to provide a call path that identifies the state of the COT before the hold and directs the call to either the extension side or the line side when the handler re-intervenes depending on the contents of the hold change state. An object of the present invention is to provide a relay stand communication path division control system that automatically performs control.

In order to achieve the above object, the present invention provides a link release type untethered central office line relay stand, in which a central office line trunk handler who handled a central office line trunk temporarily holds the central office line trunk and then intervenes again. The system is characterized in that a hold state is identified and a central office line relay stand operator automatically intervenes on the extension line or central office line side depending on the hold state. Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an embodiment according to the present invention, and the same reference numerals as in FIG. 1 indicate the same contents. When the operator responds to an incoming call on the local line or makes a call on the local line, and then puts the COT and the local line on hold, the situation is the same as that described in FIG. 1.
When the operator intervenes in this pending state of COT, by pressing the RE key 0 corresponding to the flashing (RE lamp) on the ATT, the RE relay of the PR is activated and the MKR is activated from the PR. In M Town R, when there is activation from PR, the DL relay and HC relay, which are not shown in FIG. 2, operate. Although it is not shown in Figure 2, it is held by the PA relay in the COT in the hold state before the extension connection operation, and it is not shown in Figure 2 in the COT in the hold state while the extension subscriber is being called after the extension connection operation. PA relay and RTA relay hold it. Therefore, when MKR selects a COT in a pending state by the trunk selection circuit, if it selects a COT in a pending state (PA relay held) before the extension connection operation, MKR's PK
The relay does not operate, and if a pending COT (PA relay and RTA relay held) with 0 extension subscribers selected after the extension connection operation is selected, the MKR PK relay operates and sends the extension side connection information to the PR. Forward.

Although the PR's MC relay is not shown in FIG. 2, it is an IJ relay that operates while the PR is starting up the MKR. Therefore, the MKR PK relay is used to identify whether the operator should face the extension line or the central office line when he or she intervenes in a COT that is on hold. When PR receives extension connection information from MKR, it sends PK
A relay operates.

In any of the above cases, the MKR selects the COT, closes the CDL, and upon completion of the connection, transfers the P-register recovery information and then restores.

When the PR receives the recovery information from the MKR, the MRL relay operates (not shown in Figure 2) and the RE relay's holding contact - mrL make contact - pka break contact or pk
The OK relay or PK relay remains operational via the a make contact. In other words, it is OK when the PKA relay does not operate.
When the relay and PKA relay operate, the PK relay operates. Also, although it is not shown in Figure 2 when the CDL is closed, the PR LK relay operates, and when the LK relay operates, the C
The OT P relay operates, dividing the COT extension line side and central office line side. When intervening in a COT that is on hold before an extension connection operation, the PKA relay does not operate, so the OK relay operates, and the PK relay does not operate, allowing the operator to automatically turn to the central office line and intervene. In addition, when intervening in a COT that is on hold while an extension subscriber is calling after an extension connection operation, PKA
Since the relay is activated, the PK relay is activated and the operator can automatically turn to the extension side and intervene. As described above, when the present invention is implemented, when the operator intervenes in a COT that is on hold, the operator automatically intervenes on the central line side or extension side depending on the content of the hold status simply by pressing the RE button of the operator. This makes it possible to simplify the operations and reduce the burden on the trainee.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing the relationship between a conventional trunk selection circuit, a relay stand seat device, and a central office line trunk. FIG. 2 shows an embodiment of the invention. In the figure, COT is a central office line trunk, MKR is a marker, COL is a code link,
PR is the seat registration station, and ATT is the station relay stand. Figure map spot

Claims (1)

[Claims] 1. In an exchange equipped with a link release type wireless central office line relay board, when the central office line relay board that handles the central office line trunk puts the central office line trunk on hold and then intervenes again, the system identifies the holding state of the central office line trunk. and means for forming a call connection path in which the office line relay stand can automatically intervene on the extension side or the office line side depending on the identification state of the holding state identification means. Base line split control system.