KR200207603Y1 - Apparatus for providing external music in SL Ivy of key phone system - Google Patents

Abstract

The present invention relates to a device for providing an external music source in a single line interface board (SLIB) of a key phone system, and in particular, a key phone for connecting an external MOHU (Music on Hold Unit) of a key phone system to a single line telephone port (SLT port) of the SLIB. The external music source providing apparatus in the SLIB of the system.

The present invention is characterized by consisting of a plurality of MOHU to connect the SLT port and the external audio in the SLIB to provide a music source of the corresponding external audio to the SLIB.

Description

Apparatus for providing external music in SL Ivy of key phone system

The present invention relates to an external music source providing apparatus in SLIB of a keyphone system, and more particularly, to an external music source providing apparatus in SLIB of a keyphone system for connecting an external MOHU of a keyphone system to an SLT port of SLIB.

As shown in FIG. 1, a conventional key phone system includes a main processor board (MPB) 11, a miscellaneous board (MISB) 12, a digitalized voice unit (DVU) 13, and a digital terminal interface board (DTIB) 14. ), SLIB (Single Line Interface Board) 15 and LCOB (Loop Start Central Office Board) 16.

The MPB 11 is a board for controlling the entire system, and a circuit for transmitting and receiving data with a CPU, a memory device, a real time clock (RTC), a watchdog, a decoding circuit, a digital switching matrix, and another board. It is composed of a circuit to maintain the contents of memory even when the power is turned off, and an RS-232 related circuit to enable communication by connecting to a peripheral device, and includes a memory expansion unit, a modem unit, and a synchronous clock generation unit. There is a selection board.

The MISB 12 is a board designed by collecting common functions used in the system, and is programmed according to a user's need by using a relay. Alarm detection, music listening, external connection pending music source 2 terminals, external broadcasting 2 terminals, etc. There is a function of.

The DVU 13 performs voice announcements when the user is absent, recording the contents of the response, the extension status guide, the automatic call distribution, the even call distribution, the extension group call function, and stores the system response recording contents in a read-only memory. Each user's response recording is stored in a recordable and readable memory. Four channels are allocated and used for system response, automatic call distribution, equal call distribution, and individual user response.

The DTIB 14 may connect a digital key phone to an extension board, multiplexing and demultiplexing circuits for adding and separating digitalized voice signals and data, and a B channel for transmitting digitalized voice and data to transmit data. The D-channel consists of 2B + D, and is provided with a CPU to transmit and receive data to and from the CPU of the MPB 11, to interpret and process signals, and to transmit and receive data to and from a digital key phone telephone to perform and process signals.

The SLIB 15 performs a function of connecting a general telephone, and has a CPU to transmit and receive data with a CPU of the MPB 11, to transmit and interpret a signal, to reset signal generation circuit, address decoder circuit, and SLIC control. It consists of a circuit, a message weight signal generator, a line drive circuit, an LED control circuit, a board ID generator, and so on, and connects both a telephone that sends DTMF signals and a telephone that sends pulse signals.

The LCOB 16 is a board which can be used in a trunk line which is a loop start method for analog, and is composed of a ring detection circuit, a closed / open circuit state detection circuit of a loop for detecting loop current, and a dial pulse sending circuit. A microprocessor is provided to transmit and receive data to and from the CPU of the MPB 11, send signals to the trunk line, and control various relays and the like.

Referring to the operation of the keyphone system configured as described above, the music source applied through the external music source input port of the MSIB 12 or DVU 13 is converted into a digital signal via a codec on each board.

The digitally converted signal is loaded on the highway of the system through the digital backplane interface device (DBID) of each board.

Accordingly, when a user on a trunk line or an extension line presses a hold button, the MPB 11 transmits a digitalized external music source on a highway to the board. Then, the transmitted digital external music source is converted back to an analog signal by the codec in each board.

Accordingly, the external music source converted into the analog signal is delivered to the other party caller who is talking to the user who presses the hold button so that the other party caller can use the external music source.

As described above, in order to use an external music source, a conventional MISB or DVU card has to be mounted in a slot. In other words, consumers can only connect to the SLT port of SLIB, so that consumers who want to use an external music source simply have to purchase a large MISB or DVU card and waste one slot in the system. There are only two input ports for, and the DVU has only one input port for external music sources, which limits the use of multiple external music sources.

In order to solve the problems described above, the present invention is to connect the external MOHU of the key phone system to the SLT port of the SLIB to enable various voice signals, such as music or broadcast announcements, to be freely used within the system. .

In addition, the present invention can be connected to several of the corresponding MOHU at the same time to meet the needs of the user can use multiple music sources for different purposes at the same time, and can freely use external music sources without wasting slots of the system at a low cost, There is a purpose.

1 is a block diagram showing a conventional key phone system.

Figure 2 is a block diagram showing an external music source providing apparatus in the SLIB of the key phone system according to an embodiment of the present invention.

3 is a block diagram showing a MOHU in FIG.

Explanation of symbols on the main parts of the drawings

20: SLIB (Single Line Interface Board)

30: SLT port (Single Line Telephone Port)

40-1 to 40-n: MOHU (Music on Hold Unit)

41: Modular Jack

42: DC loop circuit

43: Audio Jack

C1, C2: Direct Current Decoupling Capacitor

ZD, VA: Ring Protection Unit

T: Isolation Transformer

The present invention for achieving the object as described above is characterized by consisting of a plurality of MOHU to connect the SLT port and the external audio in the SLIB to provide the music source of the corresponding external audio to the SLIB.

The present invention connects MOHU to SLT port of SLIB as well as a general telephone so that an external music house can be used. Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention in detail as follows. FIG. 2 is a block diagram showing an external music source providing apparatus in SLIB of a key phone system according to an embodiment of the present invention, and FIG. 3 is a block diagram showing MOHU in FIG.

As shown in FIG. 2, the apparatus for providing an external music source in the SLIB of the keyphone system according to an embodiment of the present invention includes an SLT port 30 provided in the SLIB 20 and a plurality of MOHUs 40-1 to 40-. n).

The SLT port 30 provides an external music source supplied through the MOHU 40-1 to 40-n to subscribers of a general telephone connected to the SLIB 20.

The MOHU 40-1 to 40-n directly connects the SLT port 30 with external audio to supply an external music source to the SLT port 30. As shown in FIG. 3, the MOHUs 40-1 to 40-n are connected to the SLT port 30 to supply an external music source, and a SLIB 20. DC loop circuit 42 for forming a loop of DC which is 24 (V) or -48 (V) supplied from the control panel and controlling a proper amount of current to flow, and 24 supplied by the SLIB 20. DC Decoupling Capacitors (C1, C2) for blocking direct current of (V) or -48 (V), and rings for blocking ring signals supplied from the SLIB (20) Ring Protection Unit (ZD, VA), Isolation Transformer (T) that separates Primary and Secondary, and Audio Jack that is connected to external audio and receives an external music source ( An audio jack 43).

The operation of the external music source providing apparatus in the SLIB of the keyphone system configured as described above will be described according to an embodiment of the present invention.

First, the SLT port 30 provided in the SLIB 20 is designated as a MOHU port. For example, when only one of the SLT ports 30 is used as the MOHU port, the first of the SLT ports 30 is used. Designate port as the port of MOHU.

Accordingly, the modular jack 41 provided in the first MOHU 40-1 is connected to the SLT port 30 designated as the port of the MOHU 40-1 to 40-n, for example, the first port. .

Meanwhile, the audio jack 43 provided in the first MOHU 40-1 is connected to external audio.

Accordingly, when the music source of the external audio is supplied from the first MOHU 40-1 and supplied to the SLIB 20 through the designated SLT port 30, the corresponding external source is provided by the codec provided in the SLIB 20. The music source is converted into a digital signal.

The digitally converted signal is loaded on the highway of the system through the DBID provided in the SLIB 20.

At this time, when a user on a trunk line or an extension line presses the hold button, the MPB transmits the digitalized external music house on the highway to the board. Then, the transmitted digital external music source is converted back to an analog signal by the codec in each board.

Accordingly, the external music source converted into the analog signal is delivered to the other party's caller who is talking to the user who presses the hold button so that the other party's party can hear the external music source.

As described above, by connecting the external MOHU of the keyphone system to the SLT port of the SLIB by the present invention, and by connecting the corresponding MOHU several at the same time according to the user's needs can use a variety of voice signals for different purposes at the same time, It can be used freely within the system without wasting slots in the system.

Claims (2)

Key phone system, characterized in that consisting of a plurality of MOHU (40-1 ~ 40-n) to connect the SLT port 30 in the SLIB 20 and the external audio to provide the music source of the corresponding external audio to the SLIB 20 External conservatory offer device from SLIB. The method of claim 1, The MOHU (40-1 ~ 40-n) is a modular jack (41) for connecting to the SLT port 30; A direct current loop circuit 42 for forming a loop of direct current supplied from the SLIB 20 and controlling a predetermined amount of current to flow; DC absorbing capacitors (C1, C2) for blocking the direct current supplied from the SLIB (20); Ring blocking units (ZD, VA) for blocking the ring signal supplied from the SLIB (20); An insulating transformer (T) separating the primary and the secondary; Apparatus for providing an external music source in the SLIB of the keyphone system, characterized in that it comprises an audio jack (43) for connecting to the external audio.