JPS6077567A - Erroneous dial transfer system - Google Patents

Abstract

PURPOSE:To improve service by informing an erroneous dial to a trunk line subscriber to the private branch of an exchange having the capacity for additional dial system to prevent the succeeding erroneous dial of the trunk line subscriber. CONSTITUTION:The numeric information of an extension subscriber STA is received by an additional dial from the trunk line subscriber and also the numeric information of the subscriber STA is stored in a memory corresponding to the pushbutton register PBR of a main storage device MM so as to identify the propriety of the numeric information. When it is decided that the information is in error, an erroneous dial incoming display instruction is transmitted to a voice announciator AM and the allocated location of the trunk line trunk CBWT stored in a memory corresponding to the register PBR in the device MM and the numeric information are transferred into an incoming response memory. Furthermore, the trunk line subscriber conducting the erroneous dialing and the device AM are connected to transmit a voice informing the erroneous dialing to the trunk line subscriber.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an erroneous dial transfer method when an incoming call is received in an additional dialing method in an electronic automatic private branch exchange.

The additional dialing system in the electronic automatic private branch exchange is configured so that the calling party can make additional dials after a call is received on the central office trunk.

The purpose of the present invention is to notify central office line subscribers of incorrect dials to private branch exchanges that are capable of this additional dialing method, and thereby prevent central office line subscribers from repeating incorrect dials.
The purpose of the present invention is to provide a wrong dial forwarding method that improves service.

In order to achieve the above object, the incorrect dial transfer method according to the present invention is an additional dialing method in an automatic private branch exchange having a central office line trunk, and includes a pushbutton register for receiving a pushbutton signal and a switch for forming a communication path, etc. , a central processing unit that controls the switching equipment, a control unit that intervenes between each circuit section and the central μ control unit, a main storage device connected to the central processing unit, and a central processing unit or an announcement machine or The voice mail system is equipped with an audio notification means, and when a call is received from a central office line subscriber, the button register is captured by the switch, and numeric information of the extension subscriber is received by additional dialing from the central office line subscriber. Upon reception, the extension subscriber numeric information is stored in the memory corresponding to the button register of the main storage device, and the correctness or incorrectness of the extension subscriber numeric information is determined.When it is determined that the extension subscriber numeric information is incorrect, the voice notification means At the same time, the erroneously dialed incoming call display command is sent, and the central storage location and numerical information stored in the memory corresponding to the button register in the main storage are stored in the incoming call response memory in the main storage. The voice notification means is connected to the central office line subscriber who made the incorrect dial, and a voice message is sent to the central office line subscriber indicating that the incorrect dial was made.

Hereinafter, the present invention will be further explained in detail with reference to the drawings. <Explain. FIG. 1 is a block diagram of an automatic private branch exchange for explaining the erroneous dial transfer method according to the present invention. This automatic private branch exchange is equipped with a voice mail system VMS to which a central branch relay board ATT, an announcement machine AMb, and a disk recorder 'ffJ%@DISK are connected. The misdialed forwarding method according to the invention can be implemented. In the figure, the SW switch, C0NT is the control device, CPU is the central processing unit, and MM is the main memory 61.
, PBRij button register, CBWT tj
A central office line trunk, LTd loop trunk, TLTt; a leased line trunk, LCi line circuit, and STA each represent an extension subscriber.

FIG. 2 is a block diagram of an automatic private branch exchange device showing one embodiment of the present invention, and is an example in which a central branch relay stand ATT is used.

When a call is received on the central office line trunk CBWT, the central thermal control device d
cPU connects to central office line trunk CBWT via restraint system @cONT
An incoming call is detected, the central office line trunk CBWT and the button register PBR are connected by a switch SW, and a dial tone is sent to the central office line subscriber. Then, the information that the accommodation position of the office line trunk CBWT and that a dial tone is being sent to the office line subscriber is stored in the memory corresponding to the button register in the main storage device MM.

When the central office line subscriber makes an additional dial, the button register PBR converts the received button signal into numerical information and sends it to the central processing unit CPU via the control unit C0NT.
send to

This causes the central control unit CPUJ- to identify the state of the button register PBR using the memory corresponding to the button register PBR in the main memory device MM, stop sending out the tone from the button register PBR, and receive the tone. After storing the numerical information in the memory, it is determined whether the received numerical information has the minimum number of digits required for connection, and if the required number of digits has not been received, the process moves to other processing. Below the central processing unit CPUt'i, additional dials from the central office line subscriber are received digit by digit by the button register PBR, and stored in the button register PBR in the main memory MM.
The data is stored in the corresponding memory and the transition to other processing is repeated until the number of digits required for connection is received.

And the central processing unit CPU is the button register P.
When the BJ final reception information is received, the connection destination is identified by the numerical information stored in the memory corresponding to the button register PBR in the main memory device MM, and if the numerical information is correct, the terminal is connected to the central office line relay stand ATT, dedicated line, Connect to the extension subscriber etc. using a known method and press the button register PBR,,! - Restoring the link between the ranks CBWT (button register PBR, station line).

If the numeric information of the additional dial of the central office line subscriber is an incorrect dial, a command to display an incorrectly dialed call is sent to the central office line relay stand ATT. Then, the accommodation position and numerical information of the central office line trunk CBWT stored in the memory corresponding to the button button register are transferred to the incoming call response memory in the main storage device MM, and the button button register PBR and the button button register are transferred. The link between the office line trunk CBWT and the office line trunk CBWT is restored, and the ring tone is transmitted from the office line trunk CBWT.

As a result, when the operator of the central office line relay board ATT presses the wrong dial response button or the incoming call response button, the central processing unit CPUVi connects the central office line subscriber who made the wrong dial to the central office line relay stand ATT. At the same time, a command is sent to the office line relay stand ATT to change the incorrect dial number display and the incorrect dial incoming display stored in the incoming call response memory in the main storage device MM to a response display.

As a result, the office line relay stand ATT operator is connected to the office line subscriber, and therefore can know the incorrect dialed number of the office line subscriber. Therefore, the central office line relay stand ATT operator can inform the central office line subscriber that the number dialed is no longer in use, and can provide the normal service of connecting the central line subscriber to an extension subscriber, private line, etc. becomes.

In the above embodiment, a case has been described in which the incorrect dial of a central office line subscriber is transferred to the central office line relay stand ATT.
The same can be applied to a method of announcing by voice.

As described in detail above, according to the present invention, the incorrect dial of a central office line subscriber who has received an incoming call using the iL additional dialing method can be connected to the central office line repeater or the voice notification device, thereby making it possible to connect the central office line subscriber's 7J4 This is effective in preventing incorrect dialing and improving service.

[Brief explanation of drawings]

Figure 1 is a relay system diagram for explaining the system of the present invention;
FIG. 2 is a relay system diagram showing an embodiment of the incorrect dial transfer system according to the present invention. P B It... Button button register LT...
・Loop trunk LC...Line circuit STA,...
Extension subscriber ATT...Central line trunk CBWT...Central line trunk AM...Announcement machine T L 'I'...Dedicated line trunk VMS...Voice mail system DI8K...Disk storage device C0NT ...Rhyme 1 device CPU...Central processing unit MM...Main memory Patent applicant NEC Corporation Representative Patent attorney Hisashi Inoro 1st SW 2nd diagram W

Claims (1)

[Claims] In the additional dialing system for automatic private branch exchange equipment with central office trunks, there are push button registers for receiving pushbutton signals, switches that form communication paths, etc., a central processing unit that controls the switching equipment, and each circuit. The central processing unit is equipped with a main storage device connected to the central processing unit, and a voice announcement means for a central processing unit, an announcement machine, or a voice mail system, When there is an incoming call from a subscriber, the switch captures the button register, receives numeric information of the extension subscriber through additional dialing from the central office subscriber, and corresponds to the button register in the main storage device. stores the extension subscriber numeric information in the memory, identifies whether the extension subscriber numeric information is correct or incorrect, and when it is determined that the extension subscriber numeric information is incorrect, sends an incorrect dial ring display command to the voice notification means, and also sends an incorrect dial ring display command to the main storage device. The central office line trunk storage location and numerical information stored in the memory corresponding to the button register in the main storage device are transferred to the incoming call response memory in the main storage device, and the central office line subscriber who made the incorrect dial An incorrect dial transfer method for additional dialing, characterized in that the above-mentioned voice notification means is connected to the station line subscriber, and a voice message indicating that there is an incorrect dial is sent to the central office line subscriber.