KR20010068672A - Apparatus and Method of gain control of call TASK in PABX - Google Patents

Abstract

PURPOSE: A gain control device by a call task in a PBX(Private Branch Exchange) is provided to improve call processing efficiency, and to control transceiving gains to perform a call task. CONSTITUTION: A line processing module(300) interfaces a gain control message for controlling transceiving gains of an SLI(Subscriber Line Interface) card(100) and a trunk card(200). A main control processing module(400) transmits the gain control message controlling an address and a data bit to the line processing module(300).

Description

Apparatus and Method of gain control of call TASK in PABX}

The present invention relates to a gain control apparatus and method by a call task in a private exchange, and more particularly, a gain control message is transmitted from a private exchange to a destination / calling party card by a predetermined gain plan for incoming / outgoing coupling. The present invention relates to a gain control apparatus and method by a call task for adjusting a transmission / reception gain.

In general, the gain control of a private exchange is set to use a man machine communication (MMC) or setup program before and after a call connection, so that the gains in trunks and subscriver line interfaces (SLI), each of the analog cards on which the call is established, are established. Control logic is used to control the transmit and receive gains on a per port basis through the MMC terminal. At this time, the SLI is configured to handle matching of the interface for the public network with various server-side connections.

1 is a block diagram showing the configuration of a gain control device in a private exchange according to the prior art.

In Fig. 1, the gain control apparatus according to the prior art is an SLI card 10, which is a caller subscription card, and a trunk card, which is a called party card, so that gain control in a private exchange is set using MMC before and after a call is connected. 20), a line processing module 30 for analyzing the digits dialed by the calling telephone TP, and the MMC controllers 40 and 50 for setting a predetermined gain plan. The SLI card 10 and the trunk card 20 incorporate gain control units 11 and 21, respectively, to adjust the transmit / receive gain of the called / calling side when the call is combined.

The call processing path is the call signal of the calling telephone (TP) is processed by the line processing module 30 via the SLI card 10 and the port base for each card according to a predetermined gain plan in the MMC controller 40,50. After the control is performed again, the processing procedure is sent to the trunk card 20 via the line processing module 30. The line processing module 30 controls the hardware bit of the corresponding port.

However, according to such a conventional gain control device, the following problem occurs.

The gain control in the private exchange is set using MMC before and after the call connection, and the gain control logic in each analog card where the call is established is a complicated path that controls the transmit / receive gain for each port through the MMC terminal. And the function of the gain control is limited only to the subscriber.

Accordingly, the present invention has been made to solve such a problem, and an object of the present invention is to send a message having a predetermined gain plan for the incoming / outgoing combination from the perspective of call processing in a private exchange to the called / calling side card. A device and method for controlling gain by a call task in a private exchange that performs a call task for adjusting a reception gain.

1 is a block diagram showing the configuration of a gain control device in a private exchange according to the prior art;

2 is a block diagram showing a gain control apparatus by a call task in a private exchange according to the present invention;

FIG. 3 is a flow chart for implementing a gain control apparatus by the call task of the present invention shown in FIG.

<Description of the code for the main part of the drawing>

100: SLI card 200: trunk card

110, 210: gain control unit 111, 211: analog switch

300: line processing module 400: main processing module

500: MMC control unit

A feature of the present invention for achieving the above object is a gain control apparatus by a call task in a private exchange having an SLI card, a trunk card, and an MMC control unit, wherein the SLI card and the trunk card transmit / receive gains. And a main processing module for interfacing the gain control message controlled by the data bits to control the control, and a main processing module for transmitting the gain control message controlled by the address and the data bits to the line processing module.

In addition, a feature of the present invention includes a first step of hooking off a telephone of a calling party subscriber; A second step of dialing a C.O.line call number and a telephone number after performing the first step; A third step of analyzing the digits of the number dialed in the second step; A fourth step of controlling an address and a data bit of a gain control message related to the digit analyzed in the third step; A fifth step of controlling the trunk card with the analyzed digit after performing the fourth step; a sixth step of turning on the loop relay after the trunk line call number is input; A seventh step of transmitting a called party number when the loop relay is turned on in the sixth step; An eighth step in which the called party responds when the called party number is transmitted in the seventh step; A ninth step of transmitting a gain control message when the called party answers in the eighth step; And a tenth step of setting the gain value when the gain control message is transmitted in the ninth step.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a block diagram showing a gain control apparatus by a call task in a private exchange according to the present invention.

3 is a flow chart for implementing the gain control apparatus according to the call task of the present invention shown in FIG.

2 and 3 together, the call processing path for adjusting the transmission / reception gain of the called / calling side when the SLI card 100 and the trunk card 200, which are analog subscribers, is connected to the caller's telephone (TP). And the SLI card 100, the line processing unit 300, and the main processing unit 400 in turn, and are again transmitted from the line processing module 300 to the trunk card 200.

In the case of the call combination of the subscriber and the trunk line, the gain control table of Table 1, which is a predetermined gain plan, can be seen.

<Table 1>

Analog trunk E & M TIE Trunk SLC Subscriber Circuit Digital trunk Digital subscriber Analog trunk Nm Nm Y Nm Nm E & M TIE Trunk Nm Nm Nm Nm Nm SLC X Nm Nm Nm Nm Digital trunk Nm Nm Nm Nm Nm Digital Subscriber Nm Nm Nm Nm Nm

Nm in <Table 1> means normal.

As shown in Table 1, when the calling party's telephone (TP) performs a call through the trunk card 200, the SLI card 100 to which the calling party's telephone (TP) is connected has an X control and a trunk card ( 200), Y control is performed. Here, X, Y control can be normal, low, high, NO control, extra low, the item on the left is self and the item on the top means the device type of the other party. .

Hook-off the calling telephone (TP) connected to the SLI card 100 and dial the C.O.line number and the telephone number (S10). The digit of the number dialed in S10 is sent to the line processing unit 300 through the resistors R5 to R8 of the gain control unit 110 for analysis (S30). Digits analyzed at S30 are sent to the main processing module 400 to control the address and data bits of the gain control message related to the digits (S40), the controlled digit information is again the trunk card through the line processing module 300 It is to control the 200 (S50).

The trunk card 200 turns on the loop relay after the CO line call number is input (S60), and transmits the called party's telephone number to the called party via the resistors R5 to R8 of the gain control unit 210 (S70). . At this time, the C.O.line number is also referred to as a Seizure message.

When the called party responds (S80), the gain control message is transmitted from the main processing module 400 via the line processing module 300 to the SLI card 100 and the trunk card 200, which are analog subscribers (S90). In this case, since the gain control message includes the gain values (normal, low, high, no control, and extra low) obtained from the gain control table of Table 1, the line processing module 300 receiving the gain control message receives the gain value. It is set (S100).

On the other hand, in the case of call establishment, the gain value of the transmitting side is determined by the resistances R5 to R8 of the gain control unit 110 of the SLI card 100 and the resistances R16 to R19 of the gain control unit 210 of the trunk card 200. On the contrary, the receiving gain value is determined by the resistors R16 to R19 of the gain control unit 110 of the SLI card 100 and the resistors R5 to R8 of the gain control unit 210 of the trunk card 200. . At this time, the larger the resistance value on both the transmitting and receiving sides, the lower the gain value.

The analog switches 111 and 211, which constitute the gain control units 110 and 210, respectively, can obtain four values in two bits as the MC4052.

Therefore, when the call is established rather than manually controlling the gain for each port in the MMC control unit 500, it can be collectively controlled using the main processing module 400, digital gain control applied only to the analog subscriber or trunk It can also be performed at the call connection of subscriber and digital trunk.

<Table 2> shows call control flow when calling from trunk of analog subscriber to trunk.

<Table 2>

Outgoing Phone SLC (Subscriber) Loop (Trunk) Line Processing Unit

Hook-Off [IDLE]

------ [HOF] --------> │

dialing [DIAL]

------ [DIGIT] ------> │

------ [DIGIT] ------> │

.

------ [DIGIT] ------> │

│ --- [SZR_TRKGP] ----> │

│ --- [SEIZURE]-> │

│ <-[LOOP OK] --- │

│ <-[SZR_TRKGP_RESP] -│

│ --- [SEND_DGT] -----> │ --- [DIGSEND]-> │

.

│ <-[POLA] ------ │; Responder response

│ <--- [OPP_POLA] ----- │

│ <--- [GAIN_CTRL] --- │ │-[GAIN_CTRL]-> │

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As a result, according to the present invention, the following advantages occur.

In other words, analog and digital cards can be connected and gain control can be processed quickly, increasing the efficiency of call processing and adjusting the transmit / receive gain to perform call tasks.

Claims (5)

A gain control apparatus by call tasks in a private switch having an SLI card, a trunk card, and an MMC control unit, A line processing module for interfacing a gain control message to adjust the transmit / receive gains of the SLI card and the trunk card; And a main processing module for transmitting a gain control message controlled by an address and a data bit to the line processing module. The method of claim 1, wherein the line processing module A gain control apparatus according to a call task in a private switch, characterized in that the digits of the trunk line call number and the telephone number are analyzed. The method of claim 1, wherein the line processing module Gain control apparatus by a call task in a private exchange, characterized in that for setting to the gain value included in the gain control message transmitted from the main processing module. The method of claim 1, The gain control message transmitted from the main processing module includes gain, normal, low, high, no control, and extra low as gain values. A first step of hooking off the calling party's telephone; A second step of dialing a C.O.line call number and a telephone number after performing the first step; A third step of analyzing the digits of the number dialed in the second step; A fourth step of controlling an address and a data bit of a gain control message related to the digit analyzed in the third step; A fifth step of controlling the trunk card with the analyzed digit after performing the fourth step; The trunk card controlled in the fifth step is a sixth step of turning on the loop relay after the CO line call number is input; A seventh step of transmitting a called party number when the loop relay is turned on in the sixth step; An eighth step in which the called party responds when the called party number is transmitted in the seventh step; A ninth step of transmitting a gain control message when the called party answers in the eighth step; And And a tenth step of setting a gain value when the gain control message is transmitted in the ninth step.