KR19990012470A - Call relay method of electronic exchange - Google Patents

Abstract

According to the present invention, when any subscriber attempts to transfer a call to an extension subscriber through an attendant console in an improved small-capacity electronic switch (DTS-1100A), the subscriber does not receive a DND (Do Not Disturb). The present invention relates to a call relaying method of an electronic switch that allows a call to be switched depending on whether or not the function is retained. In the conventional technology, even when an extension subscriber wants to selectively receive a call, the receptionist cannot know this, Since there is a drawback that an internal subscriber must also receive an unnecessary call because it connects the internal subscriber, in the present invention, any subscriber in the improved small capacity electronic switching system (DTS-1100A) is an extension subscriber through the guide 16. If an attempt is made to transfer a call, the subscriber is placed on hold, and then the extension subscriber to be transferred retains the DND feature. If you check the forces the doctor from the held subscriber requires connection force, to avoid unnecessary call connection by the subscriber station to switch to, so it can improve the above defect.

Description

Call relay method of electronic exchange

The present invention relates to a call relaying method of an electronic switchboard, in particular, in the improved small-capacity electronic switchboard (DTS-1100A) when any subscriber attempts to transfer a call to an extension subscriber through an attendant console. The present invention relates to a call relaying method of an all-electronic switching system, which allows a call to be switched according to whether a subscriber has a Do Not Disturb (DND) function.

DTS-1100 Enhanced Switchboard is an international standard electronic switch that is used for local, local / Tandem and CENTREX of PSTN (Public Switched Telephone Network) and ultimately ISDN It has been developed to be a flexible exchanger in various network types such as intelligent network (IN).

The DTS-1100 is an advanced system developed by applying the latest technologies in the fields of computer, semiconductor, communication, and software. It is suitable for all applications in terms of external size, performance, service flexibility, and adaptability to network environment.

The DTS-1100 advanced system is one of the existing commercialized and commercialized services such as voice (Local / Tandem), CENTREX, ISDN (2B + D, 30B + D), and common line signaling (CCS NO.7). It has been developed to play a major role in a comprehensive information communication network that can be accommodated by all systems.

The main design concept of the DTS-1100 retrofit is an open architecture that provides flexibility and modularity to make it easier to expand and modify the system and to improve the system as technology advances. Adopted.

In other words, the system structure is designed to minimize the impact of technological development, and is designed in consideration of economics to provide advanced services to subscribers at a more economical price.

The main considerations in the design of the DTS-1100 advanced system are as follows.

* Simplify hardware by maximizing modularity

* Realization of economical efficiency by maximizing hardware usage efficiency

* Economic feasibility by maximizing software processing function

* Increased system configuration flexibility through subsystem combination

* Maximization of operation and maintenance by simplifying hardware

* High performance and high reliability

* Enhanced software implementation and maintenance

* Easy to add new features

The DTS-1100 retrofit is available in a variety of packages.

The DTS-1100 is a system that can accommodate up to 8,192 subscribers and 1,080 trunk lines, and has a distributed control concept that can handle 1,200 Erlang traffic and 150,000 Busy Hour Call Attempts (BHCA). The capacity is extended by 1500 lines.

Concentration ratios can be 4: 1 or 8: 1.

In this regard, the information desk of the improved small-capacity electronic switching device DTS-1100A according to the prior art can normally hold up to four when a call is received from an external subscriber, and selectively communicates with the external subscriber. The call is transferred to the desired extension subscriber.

However, in the conventional technology, even if the extension subscriber wants to receive the call selectively, the receptionist cannot know the call, so the internal subscriber connects the internal subscriber at the request of the external subscriber. There is a flaw.

Accordingly, an object of the present invention is that when an arbitrary subscriber attempts to transfer a call to an extension subscriber through an attendant console in an improved small capacity electronic switching system (DTS-1100A), the arbitrary subscriber is once held. After that, if the extension subscriber to be transferred has the Do Not Disturb (DND) function, the call of the electronic switch that confirms the intention to switch from the suspended subscriber to switch to the extension subscriber when the forced subscriber is requested. To provide a relay method.

1 is a block diagram illustrating a call relaying method of an electro-electronic exchanger according to the present invention;

Figure 2 is a flow chart for explaining step by step call relay method of the electronic switch according to Figure 1;

Explanation of symbols for main parts of the drawings

10: main processor unit 12: ISDN line processor unit

14 input / output section 16 guide

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, an embodiment of the present invention for achieving the above object in detail.

Referring to FIG. 1, FIG. 1 is a block diagram illustrating a call relaying method of an electronic switch system according to the present invention, which includes a main processor (MP) unit 10 for performing subscriber and relay call processing; ISDN Line Processor (LP) unit for monitoring the status of each line to report to the main processor unit 10 and receive control commands from the main processor unit 10 to control each ISDN line (Integrated Services Digital Network line) (12) and an input / output section (14) for controlling key input / output ports and key operation / display functions for input / output for matching the main processor section (10) and the operator. And a guide 16 which communicates with the ISDN line processor unit 12 to perform a call transfer function.

The present invention thus made will be described in detail with reference to FIG. 2 as follows.

First, the main processor unit 10 performs subscriber and relay call processing such as number translation for exchange service between specific subscribers, and the ISDN line processor unit 12 monitors the state of each line to the main processor unit 10. Reports and receives control commands from the main processor unit 10 to control each ISDN line.

In addition, the input / output unit 14 is responsible for the control of the input / output port and key operation / display functions for input / output for matching the main processor unit 10 and the operator. Is displayed on a screen such as a Cathode Ray Tube (CRT) provided with various kinds of information according to the input or output from the electronic exchanger.

The guide 16 communicates with the ISDN line processor unit 12 to perform a call transfer function between the external subscriber and the internal subscriber or between the internal subscriber to connect the internal subscriber with the external subscriber.

FIG. 2 is a flowchart illustrating a step-by-step method for relaying a call in the electronic switch according to FIG. 1.

First, when an external or extension subscriber requests a call transfer to any extension subscriber, the extension (Directory Number) is dialed (101, 102).

Next, if the extension DN subscriber is in normal state, it performs normal call processing procedure. If it is not normal, it checks whether the DND (Do Not Disturb) function is registered. If the DND function is not registered, the subscriber call is performed. Since the call transfer request subscriber is notified of the busy state (103, 104, 105, 106).

In addition, if the DND function is registered, the call forwarding request subscriber is notified that the DND function is registered. If the forced forwarding request is not requested, the call disconnection processing is requested. Perform call transfer (107, 108, 109, 110, 111).

As described above, in the improved small-capacity electronic switchboard (DTS-1100A), any subscriber attempts to transfer a call to an extension subscriber through an attendant console 16. After the subscriber is put on hold, if the extension subscriber to be transferred has the Do Not Disturb (DND) function, the subscriber is confirmed to be forced to switch from the suspended subscriber to switch to the extension subscriber. There is an effect that can prevent unnecessary telephone connections.

That is, by using the relay function to the incoming rejection subscriber of the information desk 16, it is possible to provide an appropriate and efficient service to the subscriber who wants urgent business or call.

Claims (1)

Main processor (MP) unit 10 which performs subscriber and relay call processing, monitors the status of each line, reports to main processor unit 10, and issues a control command from main processor unit 10. An ISDN Line Processor (LP) unit 12 for receiving and controlling each ISDN line (Integrated Services Digital Network line), and an input / output port for matching the main processor unit 10 and an operator. an input / output unit 14 for key operation and display functions for control and input / output of a port), and a guide 16 for communicating with the ISDN line processor unit 12 to perform a call switching function. In the all-electronic exchanger that includes: A first step (101, 102) of dialing an extension number (DN) if any external or extension subscriber requests call transfer to any extension subscriber; After performing the first step (101, 102), if the extension of the station DN subscriber is normal (normal) performs a normal call processing procedure, and if it is not normal checks whether the Do Not Disturb (DND) function is registered A second step (103, 104, 105, 106) of notifying the call transfer requesting subscriber of the call transfer status if the DND function is not registered; After performing the second step 103, 104, 105, 106, if the DND function is registered, the call transfer request subscriber is notified that the DND function is registered. And a third step (107, 108, 109, 110, 111) of making a call request to the called subscriber and performing a call transfer.