JP3026795B2 - Mobile communication system and wireless communication device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone device having a fixed device connected between a main device such as a key telephone device and an extension telephone, and wirelessly communicating between the fixed device and the mobile device. And the like, and a wireless communication device composed of a base unit of a cordless telephone device for transmitting and receiving signals to and from a child device by wireless communication and connected between a main device such as a key telephone device and an extension telephone. .

[0002]

2. Description of the Related Art Conventionally, in a cordless telephone device in which a base unit is connected between a main device of a key telephone device and a dedicated telephone, a calling sound source is provided only in the main device.

[0003]

However, in the above-mentioned conventional cordless telephone device, since the calling sound source is provided only in the main device, the call source is connected to the dedicated telephone connected to the cordless telephone device via the main device. Incoming and outgoing calls can be made by sending a ring tone from the calling sound source of the main unit.However, in order to call a dedicated telephone from a cordless telephone device, a ringer or the like must be provided in the dedicated telephone because it does not pass through the main device. The dedicated telephone connected to the base unit of the cordless telephone must have a different configuration from the dedicated telephone directly connected to the main unit.

[0004] In view of the above-mentioned conventional problems, the present invention has a fixed device connected between a main device such as a key telephone device and an extension telephone, and performs wireless communication between the fixed device and the mobile device. It is an object of the present invention to provide a mobile communication system in which an extension telephone connected to a fixed device and an extension telephone connected to a main device can have the same configuration. Further, in a wireless communication device connected between a main device such as a key telephone device and an extension telephone and transmitting and receiving signals to and from a mobile device by wireless communication, the extension telephone connected to the extension telephone connected to the main device and It is an object of the present invention to provide a wireless communication device that can have the same configuration.

[0005]

According to a first aspect of the present invention, there is provided a fixed machine connected between a main unit for accommodating an outside line and an extension and an extension telephone, and a signal for the fixed machine. A mobile communication system including a mobile device that performs transmission and reception of the call by wireless communication, a calling sound source for transmitting a predetermined calling sound signal to the fixed device, and a calling sound source for calling the extension telephone. And a sound source control unit for transmitting a calling sound signal to the extension telephone.

According to a second aspect of the present invention, in a wireless communication device connected between an extension telephone and a main device accommodating an outside line and an extension and transmitting and receiving signals to and from a mobile station by wireless communication, a predetermined ringing sound signal is transmitted. And a sound source control unit for transmitting a calling sound signal from the calling sound source to the extension telephone when the extension telephone is called.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a system diagram showing a schematic configuration of a mobile communication system according to an embodiment of the present invention.

This mobile communication system has a line 401 such as a general subscriber line or a private branch exchange (PBX). The line 401 accommodates a plurality of outside lines and extensions and is provided in a key telephone apparatus. The main device 402 is connected. Further, an extension telephone 403 is connected to the main unit 402, and a base unit (fixed unit) 404 of the cordless telephone unit is connected to the main unit 402. This base unit 404 has an extension telephone 405
Are connected, and a slave unit 406 that performs wireless communication with the master unit 404 is provided.

FIG. 2 is a block diagram showing a schematic configuration of master unit 404 shown in FIG.

The parent machine 404 includes a transformer 501,
The transformer 501 has an extension 50 from the main unit 402.
2 and a ping-pong transmission IC (slave side) 503 are connected. Further, the ping-pong transmission IC 503 is connected to an extension 507 to the extension telephone 405 via a cross point switch 504, a ping-pong transmission IC (master side) 505, and a transformer 506.

On the other hand, a CPU 508 and a codec 509 for controlling the operation of the entire apparatus are connected to the cross point switch 504. The CPU 508 has a sound source control unit 508a, and is connected to the calling sound source 510, the signal processing circuit 511, and the transceiver 512.
The calling sound source 510 is connected to the codec 509 via the adding circuit 513. Then, an antenna 514 is pulled out from the transceiver 512.

FIG. 3 is an operation flowchart of this embodiment. The operation of this embodiment will be described with reference to FIG.

When the handset 406 presses a call key to call the extension telephone 405, information on the call key is determined by the CPU 508 in the base unit 404 (step S301). As a result, the CPU 508 switches the cross point switch 504, and the extension telephone 405 and the base unit 4
Then, the communication path with the communication terminal 04 is connected (step S302).

Subsequently, the transmission of the calling sound source 510 is turned on using the sound source control unit 508a (step S30).
3) A call sound signal is transmitted to the extension telephone 405. This ringing sound signal has an off-hook signal of the extension telephone 405.
(Step S304) or until the extension stop key is pressed (step S305).
It continues to be sent.

When an off-hook signal is sent from the extension telephone 405, the calling sound source 510 is turned off (step S306), and the voice circuit of the signal processing circuit 511 is turned on (step S307) to shift to a call mode. (Step S308). When the calling sound source 510 is on, the output of the signal processing circuit 511 is turned off, and the calling sound source 51 is turned off.
When 0 is off, the output of the signal processing circuit 511 is turned on.
Thus, the adding circuit 513 is controlled to output one of the output of the calling sound source 510 and the output of the signal processing circuit 511.

As described above, according to this embodiment, the fixed machine is provided with a calling sound source for calling an extension telephone connected to a fixed machine constituted by, for example, a base unit of the cordless telephone device, and a sound source control unit. Therefore, the ringing tone can be transmitted from the cordless telephone device to the extension telephone, and the extension telephone connected to the base unit of the cordless telephone device can have the same configuration as the extension telephone directly connected to the main device.

The present invention is not limited to the illustrated embodiment, and various modifications are possible. For example, in the present embodiment, the output of the calling tone generator 510 and the signal processing circuit 511 Although the switching with the output is performed by using the adder circuit 513, the same effect can be obtained by performing the switching by using, for example, a duplexer.

[0019]

As described above in detail, according to the first aspect, it is possible to transmit a calling sound signal from a fixed device to an extension telephone connected to the fixed device. The extension telephone connected to the main unit can be configured to have the same configuration as the extension telephone connected thereto.

According to the second invention, the radio communication device can
Since it is possible to transmit a ringing sound signal to the extension telephone connected to the wireless communication device, it is possible to make the extension telephone connected to the radio communication device and the extension telephone connected to the main device the same configuration. Become.

[Brief description of the drawings]

FIG. 1 is a system diagram showing a schematic configuration of a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of a master unit shown in FIG.

FIG. 3 is an operation flowchart of the embodiment.

[Explanation of symbols]

 401 line 402 main unit 403 extension telephone 404 master (fixed) 405 extension 406 slave 503 ping-pong transmission IC (slave side) 504 cross-point switch 505 ping-pong transmission IC (master side) 508 CPU 508a sound source control unit 509 Codec 510 Call source 511 Signal processing circuit 512 Transceiver 513 Addition circuit 514 Antenna

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04B ⁷ /24-7/26 H04M 1/00 H04M 1/24 H04M 1/58-1/62 H04M 1 / 66-1/78 H04Q 3/58-3/62 H04Q 7/06-7/38

Claims (2)

(57) [Claims] 1. A mobile communication system comprising: a fixed unit connected between a main unit that accommodates an outside line and an extension and an extension telephone; and a mobile unit that transmits and receives signals to and from the fixed unit by wireless communication. The fixed machine further includes a calling sound source for transmitting a predetermined calling sound signal, and a sound source control unit for transmitting a calling sound signal from the calling sound source to the extension telephone when the extension telephone is called. Mobile communication system characterized by the above-mentioned. 2. A call for transmitting a predetermined call sound signal in a wireless communication device connected between a main device for accommodating an outside line and an extension and an extension telephone and transmitting and receiving signals to and from a mobile device by wireless communication. A wireless communication device, comprising: a sound source for sound; and a sound source control unit for transmitting a calling sound signal from the calling sound source to the extension telephone when the extension telephone is called.