KR100309439B1 - Apparatus and Method of gain control of call TASK in PABX - Google Patents

Abstract

The present invention relates to an apparatus and a method for controlling a gain by a call task that adjusts a transmission / reception gain by sending a gain control message to an incoming / outgoing side card based on a predetermined gain plan for an incoming / outgoing connection in a private branch exchange.

A feature of the present invention resides in a method comprising: a first step of hooking off a telephone of a calling subscriber; A second step of dialing a CO calling number and a telephone number after performing the first step; A third step of analyzing the digit 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 digits after performing the fourth step, a sixth step of turning on the loop relay after the trunk card controlled by the fifth step is input, A seventh step of transmitting the called party telephone number when the loop relay is turned on in the sixth step; An eighth step in which the called party answers when the called party's telephone number is transmitted in the seventh step; A ninth step in which the receiver receives a gain control message in response to the eighth step; And a tenth step of setting the gain control message to a corresponding gain value when the gain control message is transmitted in the ninth step.

The present invention is capable of connecting a call to an analog and a digital card, and is capable of quickly processing gain control, thereby increasing the efficiency of call processing and controlling the transmission / reception gain, thereby performing a call task.

Description

TECHNICAL FIELD [0001] The present invention relates to a gain control method and apparatus for a call exchange in a private branch exchange,

The present invention relates to an apparatus and method for controlling a gain by a call task in a private branch exchange, and more particularly, to a method and apparatus for controlling a gain in a private branch exchange by transmitting a gain control message to a calling / And to a gain control device and method by a call task that adjusts the transmit / receive gain.

In general, the gain control of a PBX is configured to use either Man Machine Communication (MMC) or an installer program before and after the call connection, so that the gain in each trunk (Trunk) and Subscriber Line Interface (SLI) Control logic is used to control the transmit / receive gain per port through the MMC terminal. At this time, the SLI handles the matching of interfaces for the public network and various server side connections.

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

1, the conventional gain control apparatus includes an SLI card 10 as a caller joining card and a trunk card 10 as a called party card so that gain control in a private branch exchange is set using MMC before and after a call is connected 20, a line processing module 30 for analyzing digits dialed by the calling telephone TP, and an MMC control unit 40, 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 control the transmission / reception gain of the incoming / outgoing side when a call is combined.

The call processing path is such that the call signal of the originating telephone TP is processed by the line processing module 30 via the SLI card 10 and is sent to the card-based port basis according to a predetermined gain plan at the MMC control 40, The line processing module 30 controls the hardware bit of the corresponding port. The line processing module 30 controls the hardware bit of the corresponding port.

However, such a conventional gain control apparatus has the following problems.

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

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a method and apparatus for transmitting a message having a predetermined gain plan for incoming / And / or a method and apparatus for controlling a gain by a call task in a private branch exchange performing a call task that adjusts reception gain.

FIG. 1 is a block diagram showing the configuration of a gain control apparatus in a private branch exchange according to the prior art,

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

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

DESCRIPTION OF REFERENCE NUMERALS FOR MAJOR PORTIONS OF THE DRAWINGS

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 controller

According to another aspect of the present invention, there is provided an apparatus for controlling a gain by a call task in a private branch exchange having an SLI card, a trunk card and an MMC controller, A line processing module for interfacing a gain control message in which data bits are controlled to adjust a gain and a data control bit, and a main processing module for transmitting an address and data bit controlled gain control message to the line processing module.

Further, a feature of the present invention resides in a first step of hooking off a telephone of a calling subscriber; A second step of dialing a CO calling number and a telephone number after performing the first step; A third step of analyzing the digit 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 digits after performing the fourth step, a sixth step of turning on the loop relay after the trunk card controlled by the fifth step is input, A seventh step of transmitting the called party telephone number when the loop relay is turned on in the sixth step; An eighth step in which the called party answers when the called party's telephone number is transmitted in the seventh step; A ninth step in which the receiver receives a gain control message in response to the eighth step; And a tenth step of setting the gain control message to a corresponding gain value when the gain control message is transmitted in the ninth step.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

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

2, the call processing path for adjusting the transmission / reception gains of the call / reception side when a call connection between the SLI card 100 and the trunk card 200, which are analog subscribers, The SLI card 100, the line processing unit 300 and the main processing unit 400 in order and then transmitted from the line processing module 300 to the trunk card 200. [

The example of the call combination of an extension subscriber and a trunk line is shown in the gain control table of Table 1, which is a predetermined gain plan.

<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

In Table 1, Nm stands for Normal.

As shown in Table 1, when the calling-side telephone TP performs the calling through the trunk card 200, the SLI card 100 to which the calling-side telephone TP is connected is subjected to X control, trunk card 200). Here, the X and Y controls can be normal, low, high, no control, extra low, the left item is self and the top item means the other device type .

(Hook-Off) the calling telephone TP connected to the SLI card 100 and dials the CO calling 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 through R8 of the gain control unit 110 and analyzed (S30). The digit analyzed in S30 is sent to the main processing module 400 to control the address and data bits of the gain control message associated with the digit (S40), and the controlled digit information is again transmitted through the line processing module 300 to the trunk card (S50).

The trunk card 200 turns on the loop relay after the trunk call number is inputted in step S60 and transmits the called party telephone number to the called party via the resistances R5 to R8 of the gain control part 210 in step S70, . At this time, the call number of the trunk line is also called a seizure message.

At step S80, the main control processing module 400 transmits a gain control message to the SLI card 100 and the trunk card 200 via the line processing module 300 at step S90. Since the gain control message includes gain values (normal, low, high, no control, extra row) obtained from the gain control table of Table 1, the received line control module 300 receives the gains (S100).

On the other hand, in the case of call establishment, the transmission side gain value is determined by the resistances R5 to R8 of the gain control section 110 of the SLI card 100 and the resistances R16 to R19 of the gain control section 210 of the trunk card 200 The reception side gain value is determined by the resistances R16 to R19 of the gain control unit 110 of the SLI card 100 and the resistances R5 to R8 of the gain control unit 210 of the trunk card 200 . At this time, the gain value decreases as the resistance value on the transmitting / receiving side increases.

The analog switches 111 and 211 each constituting the gain control units 110 and 210 are MC4052, and four values can be obtained with 2 bits.

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

Table 2 shows the flow of call control when originating from the originating telephone to the trunk of the analog subscriber.

<Table 2>

The originating telephone SLC (subscriber) loop (trunk) line processing section

Hook-Off [IDLE]

│

dialing [DIAL]

│

│

.

│

│

│

│ <- [LOOP OK] --- │

│ <- [SZR_TRKGP_RESP] -│

│

.

│ <- [POLA] ------ │; Recipient Response

│ <--- [OPP_POLA] ----- │

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

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited to the described embodiments but should be determined by the equivalents of the appended claims, as well as the following claims.

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

In other words, it is possible to connect analog and digital cards, and gain control can be processed quickly, so call processing efficiency can be increased, and call / reception gain can be controlled to perform call task.

Claims (5)

An apparatus for controlling a gain by a call task in a private branch exchange having an SLI card, a trunk card and an MMC control unit, A line processing module for interfacing a gain control message to adjust a transmission / reception gain of the SLI card and the trunk card, And a main processing module for transmitting a gain control message in which addresses and data bits are controlled to the line processing module. The apparatus of claim 1, wherein the line processing module And analyzing the digits of the trunk call number and the telephone number. The apparatus of claim 1, wherein the line processing module And setting the gain value included in the gain control message transmitted from the main processor processing module to the gain value. The method according to claim 1, Wherein the gain control message transmitted from the main processor processing module includes a normal value, a low value, a high value, a no-control value, and an extra value as gain values. A first step of hooking off a telephone of a calling subscriber; A second step of dialing a CO calling number and a telephone number after performing the first step; A third step of analyzing the digit 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 digits after performing the fourth step; A sixth step of causing the trunk card controlled in the fifth step to turn on the loop relay after the trunk call number is input; A seventh step of transmitting the called party telephone number when the loop relay is turned on in the sixth step; An eighth step in which the called party answers when the called party's telephone number is transmitted in the seventh step; A ninth step in which the receiver receives a gain control message in response to the eighth step; And And setting the gain value to a gain value when the gain control message is transmitted in the ninth step.