JPH10191420A - Digital multi-function telephone set in exchange system for business office - Google Patents

Abstract

PROBLEM TO BE SOLVED: To introduce efficiently a personal handy phone system to an exchange system for a business office. SOLUTION: A channel control part 102 control a channel consisting of a handset 104, a microphone 105 and a speaker 106. A private base station function part 109 is provided with a radio interface function, a MODEM function and a channel code function with a terminal equipment in a personal handy phone system in compliance with 2nd generation cordless telephone system standards. A demultiplexer/multiplexer part 110 demultiplexer/multiplexes voice data of a digital multi-function telephone set and voice data of the private base station function part 109 into ISDN vice channels. A line interface part 103 connects the data demultiplexed/multiplexed by the demultiplexer/multiplexer part 110 to a private exchange via the ISDN transmission channel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital multi-function telephone used as an extension telephone in an office switching system, and more particularly to a digital multi-function telephone compatible with a simple mobile telephone system for a premises.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram of a digital multi-function telephone used as an extension telephone in a conventional office switching system. In this figure, 101 is a control unit,
102 is a communication path control unit, 103 is a line interface unit, 104 is a handset, 105 is a microphone, 106 is a speaker, 107 is a function key unit, and 108 is a display unit.

A control unit 101 controls a communication path control unit 102, a line interface unit 103, a function key unit 107, and a display unit 108. The communication path control unit 102 includes the control unit 10
Handset 104, microphone 10 according to information from
5. Control the communication path composed of the speaker 106. The line interface unit 103 connects to a private branch exchange via a transmission line.

FIG. 4 is a block diagram showing a case where a simplified portable telephone system is introduced into a conventional office switching system. In this figure, 201 is a digital multi-function telephone used as an extension telephone, 202 is a digital multi-function telephone interface unit, and 203 is a private branch exchange.

A digital multi-function telephone 201 is connected to a private branch exchange 203 via a digital multi-function telephone interface unit 202. On the other hand, reference numeral 204 denotes a terminal (PS) of the simplified portable telephone system, 205 denotes a business base station (CS) in the simplified portable telephone system, 206
Is a base station interface unit. Business base station 20
Reference numeral 5 is connected to the private branch exchange 203 via the base station interface unit 206.

[0006]

When a simplified portable telephone system is introduced into the above-mentioned conventional office switching system, it is necessary to install a considerable number of office base stations. Since it is necessary to add a trunk cable for connecting the private branch exchange, there have been problems that the introduction period is lengthened due to the addition of a system and system construction, and the introduction cost is increased. [Object of the Invention] An object of the present invention is to add a business base station function of a simplified portable telephone system specified by RCR STD-28 to a digital multifunctional telephone used as an extension telephone in a private branch exchange system, In addition, the above-mentioned problem is solved by making the digital multi-function telephone interface unit for connecting the digital multi-function telephone and the private branch exchange and the base station interface unit for connecting the office base station and the private branch exchange in the simplified portable telephone system common. To solve it.

[0007]

According to a first aspect of the present invention, there is provided a digital multi-function telephone in an office switching system, wherein the digital multi-function telephone conforms to a second-generation cordless telephone system standard (abbreviation: RCR STD-28). It is characterized by the addition of a base station function for business establishment.

[0008] In a second aspect based on the first aspect, the digital multi-function telephone interface unit for connecting the digital multi-function telephone with a private branch exchange, and a simplified type which conforms to the second generation cordless telephone system standard. The present invention is characterized in that an office base station and a base station interface section for connecting the private branch exchange in a mobile telephone system are integrated.

Further, a third invention is a digital multifunctional telephone in a switching system for business use, wherein the communication path control section for controlling a communication path comprising a handset, a microphone, and a speaker is compliant with a second generation cordless telephone system standard. A wireless base station function unit having a wireless interface function with a terminal, a modem function, and a channel codec function in the simplified portable telephone system, and a voice data of the digital multi-function telephone and the private base station function unit. A demultiplexing / multiplexing unit for demultiplexing / multiplexing voice data into an ISDN voice channel;
A line interface unit for connecting the multiplexed data to the private branch exchange via the ISDN transmission line.

In a fourth aspect of the present invention, in the third aspect, the demultiplexing / multiplexing unit converts the voice data 1CH of the digital multi-function telephone and the voice data 3CH of the private base station function unit into 2DN for the ISDN voice. It is characterized in that it is separated and multiplexed into channels.

[Operation] A digital multifunctional telephone used as an extension telephone is provided with a base station function for an office of a simplified portable telephone system conforming to RCR STD-28 (second generation cordless telephone system standard). A digital multi-function telephone interface unit for connecting a multi-function telephone and a private branch exchange is shared with a base station interface unit for connecting a business base station and a private branch exchange in a simplified portable telephone system (meaning of integration).

[0012]

Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a digital multi-function telephone in a business switching system according to the present invention. In this figure, 101 is a control unit, 102 is a communication path control unit, 103 is a line interface unit, 104
Is a handset, 105 is a microphone, 106 is a speaker,
107 is a function key unit, 108 is a display unit, 109 is an RCR
In accordance with STD-28 (second generation cordless telephone system standard), a base station function unit for premises, 110 is a demultiplexing / multiplexing unit.

The control unit 101 includes a communication path control unit 102, a line interface unit 103, a function key unit 107, a display unit 108, a private base station function unit 109, and a demultiplexing / multiplexing unit 11.
0 is controlled. The communication path control unit 102 controls the handset 104, the microphone 105,
The communication path including the speaker 106 is controlled. Well-known RC
Local base station function unit 109 conforming to RSTD-28
Has a wireless interface function with a PS (wireless terminal), a modem function, and a channel codec function for three channels. The demultiplexing / multiplexing unit 110 stores the voice data 1CH of the digital multifunction telephone and the voice data 3 of the private base station function unit.
CH is handled as 32 Kbps data,
The 2DN channels for ISDN voice are separated and multiplexed into four arbitrary 32 Kbps channels. The line interface unit 103 connects the data demultiplexed and multiplexed by the demultiplexing / multiplexing unit 110 to the private branch exchange via a transmission path as equivalent to the ISDN 2B channel.

FIG. 2 is a diagram showing an interface between a digital multifunction telephone and a private branch exchange in the office switching system of the present invention. In this figure, reference numeral 207 denotes the digital multifunctional telephone, 202 denotes a digital multifunctional telephone interface unit, and 203 denotes a private branch exchange.
The digital multi-function telephone 207 is connected to the private branch exchange 203 via the digital multi-function telephone interface unit 202 as in the prior art.

[0016]

As described above, according to the present invention, when a simplified cellular phone system is introduced into an office switching system, installation of a base station for the office and a backbone cable for connecting the private base station and the private branch exchange are performed. No need for new expansion
There is an effect that the introduction period can be shortened and the introduction cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a digital multifunctional telephone in a business switching system according to the present invention.

FIG. 2 is a diagram showing an interface between a digital multifunctional telephone and a private branch exchange in the office switching system of the present invention.

FIG. 3 is a configuration diagram of a digital multifunctional telephone used as an extension telephone in a conventional office switching system.

FIG. 4 is a configuration diagram of a case where a simplified mobile phone system is introduced into a conventional office switching system.

[Explanation of symbols]

Reference Signs List 101 control unit 102 communication line control unit 103 line interface unit 104 handset 105 microphone 106 speaker 107 function key unit 108 display unit 109 local base station function unit 110 separation / multiplex unit 201 digital multifunctional telephone 202 digital multifunctional telephone interface 203 Private branch exchange 204 Terminal (PS) of simplified portable telephone system 205 Base station (CS) for business establishment 206 Base station interface unit 207 Digital multifunctional telephone apparatus for simplified portable telephone system

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Claims (4)

[Claims] 1. A digital multi-function telephone in an office switching system, wherein the digital multi-function telephone has a second generation cordless telephone system standard (abbreviated as RC).
A digital multifunctional telephone in a business switching system, characterized by adding a business base station function conforming to RSTD-28). 2. A digital multi-function telephone interface unit for connecting the digital multi-function telephone to a private branch exchange; a business base station in the simplified portable telephone system conforming to the second generation cordless telephone system standard; and the private branch exchange 2. A digital multi-function telephone according to claim 1, wherein said digital multi-function telephone is integrated with a base station interface unit for connecting said telephone. 3. A digital multifunctional telephone in an office switching system, comprising: a communication path control unit for controlling a communication path including a handset, a microphone, and a speaker; and a simplified portable telephone system conforming to a second generation cordless telephone system standard. A private base station function unit having a radio interface function with a terminal, a modem function, and a channel codec function, and voice data of the digital multi-function telephone and voice data of the private base station function unit in ISDN voice. And a line interface unit for connecting the data demultiplexed / multiplexed by the demultiplexing / multiplexing unit to a private branch exchange via the ISDN transmission line. Digital multifunctional telephone in the office switching system. 4. The demultiplexing / multiplexing unit separates voice data 1CH of the digital multi-function telephone and voice data 3CH of the private base station function unit into ISDN voice 2B.
4. A digital multi-function telephone according to claim 3, wherein the digital multi-function telephone is separated and multiplexed into channels.