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Fixed subscriber unit of wireless local loop system

A technology of local loop and subscriber unit, applied in radio/induction link selection arrangement, wireless communication, line monitoring circuit, etc., can solve the problem of telephone pulse dialing signal being mistaken for hook signal and so on

Inactive Publication Date: 2003-10-29
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the control part is realized according to the consideration of satisfying all standards of pulse dialing of telephone sets used in different countries in the world, that is to say, if the control part is configured to make DTMF (Dual Tone Multi-Frequency) type telephone dialing by telephone dialing If the detection circuit detects and causes the pulse dialing type telephone dialing to be detected by the off-hook / on-hook detection circuit, the problem arises that the telephone pulse dialing signal may be detected as being mistaken for a hook-flap signal

Method used

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  • Fixed subscriber unit of wireless local loop system
  • Fixed subscriber unit of wireless local loop system
  • Fixed subscriber unit of wireless local loop system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0039] A first embodiment of the invention relates to a fixed subscriber unit provided with off-hook / on-hook signal discrimination means.

[0040] FIG. 1 is a block diagram showing the structure of a fixed subscriber unit (FSU) of a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an antenna connector. Since the antenna of the FSU is generally installed outdoors, the antenna connector 1 is a connector for connecting the antenna cable. Reference numeral 2 denotes a radio circuit. The wireless circuit 2 transmits / receives wireless data while the frequency and transmission / reception time stamp are designated by the wireless control section 3 . Reference numeral 2a denotes a synthesizer built into the radio circuit. The synthesizer 2a generates a signal of a frequency selected by the wireless control section 3. The wireless control section 3 measures the received level from the wireless data received from the base station and writes the receive...

no. 2 example

[0048] The second embodiment relates to a fixed subscriber unit that clears stored dial information and outputs a dial tone when a hook flash signal is detected during dialing.

[0049] FIG. 3 is a block diagram showing the structure of a fixed subscriber unit (FSU) of a second embodiment of the present invention. In FIG. 3, reference numeral 301 denotes an antenna connector. Since the antenna of the FSU is usually set outdoors, the antenna connector 301 is a connector for connecting the antenna cable. Reference numeral 302 denotes a radio circuit. Whereas the radio circuit 302 transmits / receives radio data frequencies and transmit / receive timings are specified by the radio control section 303, and reference numeral 302a denotes a synthesizer built into the radio circuit 302. The synthesizer 302 a generates a signal of a frequency specified by the wireless control section 303 . The wireless control section 303 measures the reception level based on the wireless data received...

no. 3 example

[0056] A third embodiment of the present invention relates to a fixed subscriber unit which outputs a dial tone to make a telephone set enter a dial input waiting state when a hook-flap signal is input during output of a busy tone or an alert tone.

[0057] FIG. 5 is a block diagram showing the structure of a fixed subscriber unit (FSU) of a third embodiment of the present invention. In FIG. 5, reference numeral 501 denotes an antenna connector. Since the antenna of the FSU is usually set outdoors, the antenna connector 501 is a connector for connecting an outdoor antenna cable. Reference numeral 502 denotes a wireless circuit. The wireless circuit 502 transmits / receives wireless data while the frequency and transmission / reception timing are designated by the wireless control section 503, and reference numeral 502a denotes a synthesizer within the wireless circuit 502. The synthesizer 502 a generates a signal of a frequency specified by the wireless control section 503 . Th...

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PUM

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Abstract

The fixed subscriber unit of the wireless local loop system includes: a wireless circuit, a base station used for wireless connection and telephone line network connection; a wireless control part; a channel codec part; a memory; a control part, including an off-hook / The on-hook signal discrimination device, the off-hook / on-hook signal discrimination device distinguishes the flashing hook signal and the pulse dial signal; and the telephone line interface part connected to the telephone set, the telephone line interface part includes the telephone off-hook / on-hook detection circuit, telephone dialing detection circuit and signal tone generation circuit. Since the pulse dial signal and the hook flash signal are distinguished from each other, dialing and hook flash can be used in different ways in the same operation as an ordinary telephone connected to a wired telephone line.

Description

technical field [0001] The present invention relates to a telephone communication device, and more particularly to a fixed subscriber unit for use with a wireless local loop type telephone system. Background technique [0002] Recently, a communication method called wireless local loop (hereinafter referred to as WLL) has attracted attention. In this WLL communication method, a telephone is used in an ordinary home or business place where a wired telephone line network is not laid locally by a wireless method instead of a metal wire method. In WLL, a wireless base station is installed in or near a telephone central office so that the wireless base station is connected with the telephone central office through a wired (or wireless) line. In addition, fixed subscriber units (hereinafter referred to as FSUs) are installed in ordinary homes or business offices so that telephones can be connected to the FSUs. The wireless base station and the FSU can communicate with each other...

Claims

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Application Information

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IPC IPC(8): H04M1/00H04L12/28H04MH04M1/31H04M9/00H04M11/00H04W84/12H04W84/14H04W88/14H04W88/18
CPCH04M1/7385H04M1/82
Inventor 大森正高桥努
Owner PANASONIC CORP
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