KR19980061824A - Remote Call Switching Method Using DISA DN Code - Google Patents

Abstract

The present invention relates to a remote call transfer method using a DISA DN code, which provides a response dial tone when the DISA DN code is received from a predetermined subscriber at a remote location. Setting a remote call transfer function for the telephone when the digit information related to the remote transfer is transmitted from the predetermined subscriber who has recognized the answer dial tone; and when the setting is completed, the remote call transfer function is remote to the predetermined subscriber. Sending a confirmation tone to indicate that the transfer is complete, so that the subscriber dials the DISA DN code of the switchboard from a particular remote location and automatically transfers all calls entered at the switchboard to the remote subscriber's request. There is an effect that can easily accommodate a small capacity subscribers economically.

Description

Remote Call Switching Method Using DISA DN Code

The present invention relates to a remote call switching method using a DISA (Direct Inward System Access: hereinafter abbreviated as DISA) DN (Directory Number: hereinafter, abbreviated as DN) code of an electronic switch, particularly in an electronic switch. The present invention relates to a remote call transfer method using a DISA DN code suitable for operating a remote electronic switch after dialing a DISA DN code from a remote subscriber.

Here, the electronic switchboard is an international standard electronic switchboard that provides the city / relay exchange function of the public switched telephone network (PSTN), and ultimately provides a wide range of applications and various functions in various network types such as a comprehensive information and communication network and a functional network. Development and flexibility were considered to provide.

Since a call transfer range of a conventional telephone exchange has received a transfer service only between subscribers connected to a stimulus exchanger, there is a problem that remote transfer cannot be made at a remote location outside the local exchange.

Accordingly, the present invention has been made to solve the above problems, when the subscriber located at a remote location dials the DISA DN code, the electronic switch is a remote call forward code, the extension number of the telephone to be controlled, If you register an authorized code, the telephone number you want to transfer, the electronic switch is intended to automatically switch and exchange the call when the subscriber located at the remote site wants to receive it.

The remote call transfer method using the DISA DN code of the present invention for achieving the above object comprises the steps of providing a response dial tone to the predetermined subscriber when the DISA DN code is received from a predetermined subscriber at a remote location; Setting a remote transfer function for the telephone when the digit information related to the remote transfer is transmitted from the predetermined subscriber who recognizes the answer dial tone; and when the setting is completed, remote transfer to the predetermined subscriber. And transmitting a confirmation sound informing that the completion is completed.

1 is a system for performing a remote call transfer method using a DISA DN code according to the present invention.

Figure 2 is a flow diagram for a remote call transfer method using a DISA DN code according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: subscriber 20: electronic switchboard

30: line processor (LP) 32: line control (LC)

34: DSP13140: main processor (MP)

42: Signal Control (SC) 44: Receive Number Analysis (NTR)

46: subscriber data handling (SDH) 48: database (DB)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a remote call transfer method using a DISA DN code according to the present invention. The subscriber 10, the electronic switch 20, and LP (hereinafter, abbreviated as LP) 30 ), LC (Trunk and Analog Line Control: hereinafter abbreviated as LC) (32), MP (Main Processor: hereinafter, abbreviated as MP) (40), SC (Signaling Control: hereinafter, abbreviated as SC) (42), NTR (Number Translation Receive: hereinafter abbreviated as NTR) 44, SDH (Subscriber Data Handling: hereinafter abbreviated as SDH) 46, DB (Data Base: hereinafter) DB (abbreviated as 48) and DSP131 (Digital Signal Processing: hereafter abbreviated as DSP) 34 are comprised.

The subscriber 10 dials the DISA number 200 at a remote location and transmits the DISA number to the electronic switchboard 20. The inside of the electronic switch 20 which received the DISA number 200 is composed of an LP 30 and an MP 40. There is an LC 32 inside the LP 30, and an SC 42, NTR 44, SDH 46, DB 48, and DSP131 34 inside the MP 40. It is composed.

The LC 32 in the electronic switchgear 20 monitors and controls the state change of the analog subscriber line and the relay line, and the digital relay line, so that the DISA number transmitted by the subscriber 10 is detected and the state of the line. If OK, the SC 42 is notified of the DN code (210). The SC 42, notified of the DN code, receives a Dual Tone Multi-Frequency (DTMF) signal from the subscriber 10 and transmits / receives an R2 MFC (Multi-Frequency Code) signal on a relay line. As it performs the management function, it confirms that the DISA DN code (220) and controls and transmits the DISA DN code to the NTR (44). NTR (44) analyzes the number and information received from the subscriber and the relay line to check the purpose and location of the destination, so that analyzes the DISA DN code 230 and transmits to the SC (42). The SC 42 requests 240 the DSP131 Tone from the DSP131 34 and the DSP131 34 transmits the answer dial tone 250 to the subscriber 10. Subscriber 10 hears the response dial tone and dials in a procedure such as A shown in FIG. 2 to notify SDH 46 of the work code (260). The SDH 46, which has received the work code 270, generates the subscriber related information and performs the process of canceling the change, so that the work code, i.e., the call forwarding code, the extension number and the shortened code of the telephone to be controlled And a phone number to be transferred to) and update (280) in the DB (48) to check the job code (300) to the LC (32) to terminate the job (290), and then use the DSP131 (34) through the SC (42). Request a DSP131 Tone (240) to the DSP131 (34) sends a confirmation tone (310) to the subscriber (10).

At the end of the procedure, the subscriber 10 hooks on after hearing confirmation that all functions have been registered. When all the functions are registered in the electronic switchgear 20 in this way, the subscriber 10 at the remote location automatically switches a call to the subscriber 10 at the remote location with the DISA DN code of the electronic switchgear 20 freely at a desired time. You can make a call.

As described above, the present invention as described above allows a subscriber to dial a DISA DN code of an electronic switch from a specific remote location to automatically switch all calls input to the electronic switch to a desired location of a remote subscriber, and further, By registering the DISA DN code of the electronic switchgear at any place desired by the subscriber, it is possible to make a call with another remote subscriber and to easily accommodate the small capacity subscriber.

Claims (2)

In the remote call transfer method for a predetermined telephone using a DISA DN code, Providing a response dial tone to the predetermined subscriber when the DISA DN code is received from a predetermined subscriber at a remote location; Setting a remote call transfer function for the telephone when digit information related to a remote call is transmitted from the predetermined subscriber that recognizes the answer dial tone; When the setting is complete, the remote call transfer method using a DISA DN code characterized in that it comprises the step of transmitting a confirmation sound to inform the predetermined subscriber that the remote transfer is complete. The method of claim 1, Digit information related to the remote call transfer comprises the remote call transfer function request information, the extension number of the phone, an authorized code, and the telephone number information desired for remote call transfer (DISA DN). Remote call transfer method using code.