KR100508971B1 - Multi-channel terminal equipment of wireless subscriber network system - Google Patents

Abstract

The present invention enables to accommodate 8 lines of voice in a terminal device of a W-WLL system, thereby enabling users to make an internal call to users of 8 lines of voice connected to a terminal device, thereby reducing waste of radio resources. The present invention relates to a multi-channel terminal device of a system, comprising: a modem, which is a hardware device for performing a wideband wireless access standard, and a modem and an RF unit (1), which transmits and receives radio waves in a wireless section, to transmit and receive subscriber data to and from the modem. First time switch (2) to enable, the second time switch (3) for switching subscriber data to enable communication between subscribers when performing the extension function, converts the analog voice data of the subscriber to PCW / ADPCM / reverse conversion function ADPCM / codec unit 4 for performing the operation, subscriber interface unit 5 for detecting the phone state and call state of subscribers, the subscriber inter DTMF analysis and comparison unit 6 which analyzes and compares DTMF signals coming from the ES 5 and sends necessary information to the central processing unit 7, a central processing unit 7 for controlling each unit, and the central processing unit By the control of (7), it consists of the ring / tone generation part 8 which generate | occur | produces a ring or a tone as needed and sends it to the subscriber interface part 5. As shown in FIG.

Description

Multi-channel terminal equipment of wireless subscriber network system

The present invention relates to a wideband wireless subscriber network (W-WLL) system, and in particular, an extension call function to users of 8 lines of voice connected to a terminal device by allowing 8 lines of voice to be accommodated among the terminals of the W-WLL system. The present invention relates to a multi-channel terminal device of a wireless subscriber network system capable of reducing waste of radio resources.

In general, a small private exchange (PABX) is installed and used for the telephone exchange function in a building. By using the extension function of the private exchange, the load of the exchange in the telephone station can be reduced.

However, in the related art, in order to use the telephone exchange function in the same building, a separate private exchange has to be installed, thus increasing the installation cost.

The present invention has been made to solve the above-mentioned drawbacks of the wireless subscriber network system that can be used as an external call as well as an external call function by receiving 8 voice lines in a terminal device without installing a separate private exchange. It is to provide a multi-channel terminal device.

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

1 is a block diagram of the present invention, a modem comprising a modem which is a hardware device for performing a wideband wireless access standard, and an RF and RF unit 1 for transmitting and receiving radio waves in a wireless section, and transmitting and receiving subscriber data with a modem. A first time switch 2 for switching the subscriber data to enable communication between subscribers when performing the extension function, and converting / reversing the analog voice data of the subscriber to PCM / ADPCM. The ADPCM / codec unit 4 which performs the changing function, the subscriber interface unit 5 which detects the phone state and the call state of the subscribers, and the DTMF signals sent to the subscriber interface unit 5 are analyzed and compared. DTMF analysis and comparison section 6 for sending information to the central processing unit section 7, and a CPU and memory for controlling each section and performing a protocol satisfying the wideband wireless connection standard. The central processing unit unit 7 and the ring / tone generating unit 8 generate a ring or tone and send it to the subscriber interface 5 as required by the control of the central processing unit unit 7.

FIG. 2 is an internal configuration of the DTMF analysis and comparison section 6 in FIG. 1, which is a DTMF receiver 9 for converting an analog signal input from a phone interface section in the subscriber interface section 5 into a 4-bit digital signal; In the CPU, the DTMF analyzer and comparator 10 which receives the output signal of the DTMF receiver 9 analyzes and compares the DTMF, and who is called at the extension function according to the number input from the DTMF analyzer and comparator 10. It consists of a latch 11 that latches so that it can be seen.

3 is a detailed configuration diagram of the DTMF analyzer and the comparator 10 in FIG. 2, and analyzes whether the first DTMF input from the subscriber interface unit 5 is "#" or not (extension function), and "#". If the first DTMF analyzer 10A for outputting a low level and the high level if not "#" and the signal input from the first DTMF analyzer 10A are low level (extension function) Is configured as a second DTMF analyzer 10B.

4 is an internal configuration diagram of the subscriber interface unit 5 in FIG. 1, which includes a phone interface unit 12 for interfacing a ring / tone signal from the ring / tone generator unit 8, and the phone interface unit 12. FIG. Selects any one of the signals of the < RTI ID = 0.0 >) < / RTI > and causes the CPU of the central processing unit 7 to perform a phone call by latching a signal input from the ora gate 13 and the phone interface unit 12. It consists of a latch (14) that allows you to know if you heard.

The present invention configured as described above will be described with reference to FIG.

First, when a hookoff interrupt occurs, the hook number is read and used as information for switching by the first time switch 2 or the second time switch section 3 (S1, S2).

Subsequently, the CPU in the central processing unit 7 executes a task of the hook (S3), and generates a transmission tone for the hook through the tone generator of the ring / tone generator 8 (S4).

In this way, when the transmission tone for the corresponding hook is generated, the DTMF analyzer and the comparator 10 convert the analog signal into the digital signal through the DTMF receiver 9 of the DTMF analysis and comparator 6 through the subscriber interface unit 5. ) Is entered.

Accordingly, as shown in FIG. 3, the first DTMF is read by the first DTMF analyzer 9 of the DTMF analyzer and the comparator 10, and the result thereof is simultaneously read by the CPU of the CPU 7 and the second DTMF analyzer 10B. You will be informed.

In this way, when the analysis result of the first DTMF analyzer 10A is notified to the second DTMF analyzer 10B, the CPU of the central processing unit 7 controls to stop generating the tone of the tone generating unit any more (S5).

If the first DTMF is not "# ", as a result of the analysis by the first DTMF analyzer 10A, the first DTMF analyzer 10A generates a high level because it is not an extension function. By executing 2), the modem and the RF unit 1 are connected to be in a call state. At this time, the second DTMF analyzer 10B is in a disabled state (S6-S8).

However, when the first DTMF is "#" in step S6, the low level is output from the first DTMF analyzer 10A because the extension function is enabled. At the same time, the second DTMF analyzer 10B is enabled and the CPU recognizes the extension function. (S9).

Next, the phone interface unit 11 in the subscriber interface unit 5 checks the state of the phone corresponding to the second DTMF number (S10).

It is determined whether the state of the phone corresponding to the second DTMF number checked in this manner is "standby", and if it is not "standby", a hook-off interrupt is generated (S11, S12).

The call is ended by the user of the phone corresponding to the hook number that generated the hook off interrupt (S13).

If the state of the phone corresponding to the second DTMF number is "standby" in step S11, the state of the phone corresponding to the second DTMF number is converted to "ring" (S14).

Next, under the control of the central processing unit 7, the ring signal is sent to the corresponding phone via the second DTMF analyzer 10B through the ring generator of the ring / tone generator 8 (S15).

Accordingly, the subscriber corresponding to the second DTMF number hears the ring signal and hooks the phone off (S16), and the call state is executed by the second tine switch 3 under the control of the CPU through the hook number and the second DTMF number. (S17, S18).

As described above, the present invention has the effect that it can be used as an internal call function by receiving 8 voice lines in the terminal device of the W-WLL system without installing a separate private exchange as in the prior art.

1 is a block diagram of a multi-channel terminal device of the present invention wireless subscriber network system.

2 is a detailed configuration diagram of the DTMF analysis and comparison unit of FIG.

3 is a detailed configuration diagram of the DTMF analyzer and comparator of FIG.

4 is a detailed configuration diagram of a subscriber interface unit of FIG.

5 is a flowchart of operation according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: modem and RF section 2: first time switch

3: Second time switch 4: ADPCM / Cotec part

5: subscriber interface unit 6: DTMF analysis and comparison unit

7: Central processing unit section 8: Ring / tone generating section

9: DTMF Receiver 10: DTMF Analyzer and Comparator

10A: First DTMF Analyzer 10B: Second DTMF Analyzer

11, 13: Latch 12: Phone interface

Claims (4)

Modem and RF unit consisting of a modem that is a hardware device that performs a wideband wireless access standard and RF for transmitting and receiving radio waves in a wireless section, A first time switch for transmitting and receiving subscriber data with a modem; A second time switch for switching subscriber data to enable communication between subscribers when performing the extension function; An ADPCM / codec unit for converting / inverting subscriber's analog voice data to PCM / ADPCM, A subscriber interface unit for detecting a subscriber's phone state and a call state, and the like; A DTMF analysis and comparison unit for analyzing and comparing DTMF signals from the subscriber interface unit and sending necessary information to the central processing unit; A central processing unit comprising a CPU and a memory for controlling each unit and performing a protocol satisfying a wideband wireless connection protocol; And a ring / tone generating unit for generating a ring or tone and sending the ring or tone to a subscriber interface unit under the control of the central processing unit. According to claim 1, wherein the DTMF analysis and comparison unit, A DTMF receiver for converting an analog signal input from the phone interface unit in the subscriber interface unit into a 4-bit digital signal; A DTMF analyzer and comparator for receiving and outputting the output signal of the DTMF receiver to analyze and compare DTMF; The multi-channel terminal device of the wireless subscriber network system, characterized in that it comprises a latch that latches so that the CPU knows who is calling in the extension function according to the number input from the DTMF analyzer and comparator. The method of claim 2, wherein the DTMF analyzer and comparator, The first DTMF which analyzes whether the first DTMF received from the subscriber interface unit is "#" or not (extension function) and outputs a low level when it is "#", and outputs a high level when it is not "#". With the analyzer, And a second DTMF analyzer enabled when the signal input from the first DTMF analyzer 10A is at a low level (when an extension function). The method of claim 1, wherein the subscriber interface unit, A phone interface for interfacing a ring / tone signal from the ring / tone generator; An oragate for selecting a signal from the signal of the phone interface unit to generate a hook-off interrupt; And latching a signal inputted from the phone interface unit to enable the CPU of the CPU to determine who heard the phone.