JPS61182360A - Absence transfer system of private automatic branch exchange - Google Patents

Abstract

PURPOSE:To transfer an incoming call of a transfer originating extension telephone to a designated telephone set by registering transfer originating extension telephone information and a transfer destination telephone information to a storage means when the transfer originating extension telephone information and the transfer destination extension information are received by an additional dial operation. CONSTITUTION:The central controller 18 registers the transfer originating extension information and transfer destination trunk line number information in pairs to a storage section 19. When an extension 11 makes dialing, the dial is counted by an outgoing register 16. The information is sent to the center controller 18 at each dialing and when the number dialed finally is confirmed to be an extension number, whether or not the dialed extension number and the transfer originating extension number are equal in the storage section 19 is collated. When they are coincident, the central controller 18 seeks an idle trunk and when the idle trunk exists, a transfer destination station number is read from the storage section 19, a pulse is sent from a sender 20 and processing is executed the same as if the subscriber 11 dialed the transfer destination trunk line number from the beginning.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a call forwarding system for automatic private branch exchange equipment.

(Prior art) The conventional call forwarding method involves dialing the call forwarding registration code and the forwarding destination extension phone number from the forwarding source extension phone, thereby storing the forwarding source extension phone information and the forwarding destination extension phone number in the storage device. Then, the incoming call to the transfer source extension telephone is made to arrive at the transfer destination extension telephone.

(Problems to be Solved by the Invention) The above transfer method only transfers an incoming call to a telephone set on the same private branch exchange, and if the transferring subscriber goes to a location other than the premises, the call cannot be transferred to a central office line. could not. Furthermore, if the user moved to another location after registering call forwarding, the forwarding destination could not be changed.

The purpose of the present invention is to solve the above-mentioned problems, register and change the transfer destination subscriber number at a destination other than the premises, and make it possible to transfer the incoming call of the transfer source extension telephone to the specified telephone. The purpose is to provide a transfer device.

(Structure of the Invention) According to the present invention, in an automatic private branch exchange device that accommodates a central office line, extension line, or private line that allows additional dialing after an incoming call is connected, means is provided for storing transfer source common-line telephone information and transfer destination telephone information, When the forwarding source extension telephone information and the forwarding destination telephone information are received by the additional dialing operation from the central office line, extension, or dedicated dialing machine, the forwarding source extension telephone information and the forwarding destination telephone information are registered in the storage means, and the forwarding A call forwarding system is obtained in which, when there is an incoming call at the originating telephone, a call is automatically made to the forwarding destination telephone stored in the storage means.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. t
o, it is an extension subscriber accommodated in a private branch exchange, 12
is a register that receives and counts additional dials, 1
3 is an automatic private branch exchange switch, 14.15 is a central office line trunk, 16 is a register for counting extension dials, 1
7゜21 is the central office line, 18 is the central control unit (CPU), 19
2 is a storage unit (MEM), and 20 is a sender that sends out dial signals.

When the station line trunk 14 detects an incoming call from the station ML7,
The central control unit 18 connects the office line trunk 14 and the register 12 through the switch 13 to enable additional dialing. When an additional dial is made from the central office line side, the register 12 receives the received dial code and sends the received dial code to the central control unit 18. The central controller 18 stores the received dial code in the storage unit 1.
9, and if they match, additional dialing of the transfer source extension number is permitted, and if they match, additional dialing of the transfer destination office line number is permitted. If there is an additional dial, it is counted in the register 12 in the same way, and the reception dial code is sent to the central control unit [8, which is stored in the storage unit 19. Next, when the office line trunk 14 detects restoration on the office line 17, the central control unit 18 registers the transfer source extension information and transfer destination office line number information as a pair in the storage unit 19.

Next, when extension subscriber 1 dials, calling register 16
Count. Each time a dial is made, the information is sent to the central control unit 1iL8, and when the dialed number is finally confirmed to be an extension number, the dialed extension number and the transfer source extension number are stored in the storage unit 19. If there is a match, the central control unit 1
8 searches for an empty trunk, and if there is an empty trunk, reads the forwarding destination office line number from the storage unit 19 and sends a pulse from the sender 20, and the extension subscriber 11 dials the forwarding destination office line number from the beginning. Do the same.

In this embodiment, the transfer destination is a central office line, but it is an extension.

It is also possible to replace it with a dedicated line or the like. Further, in the embodiment, the transfer of incoming calls from extension lines has been described, but it is easy to imagine that incoming calls from central office lines can also be transferred. Just dial the call forwarding release code and the forwarding extension number.
It is also possible to cancel the transfer while the cine is in use.

(Effects of the Invention) The present invention has the advantage that an incoming call on a transfer source extension can be transferred to a designated office line, extension, or private line telephone.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention. to, tt... Common-law subscriber, 12...
Register, 13...Switch, 14.15...
...Station line trunk, 16...Register, 1
7.21...Station line, 18...Central control unit, 19...Storage unit, 20...Sender. □t

Claims (1)

[Claims] In an automatic private branch exchange system that accommodates a central office line, extension line, or private line that allows additional dialing after an incoming call is connected, a means for storing forwarding source extension telephone information and forwarding destination telephone information is provided. When the transfer source extension telephone information and the transfer destination telephone information are received by the additional dialing operation, the transfer source extension telephone information and the transfer destination telephone information are registered in the storage means, and when there is an incoming call on the transfer source telephone, the transfer source telephone information and the transfer destination telephone information are registered in the storage means. A call forwarding method characterized by automatically calling a forwarding destination phone stored in the means.