JPH0211050A - Telephone exchange - Google Patents

Abstract

PURPOSE:To simultaneously the same type of communications with one digital terminal by providing a change-over switch to switch plural channels simultaneously to plural sound signal input/output parts and plural data input/output parts and using independently plural information channels for voice and data communications. CONSTITUTION:Plural channels 23a and 23b to transmit a sound signal data are respectively straddled to sound signal input/output parts 18a and 18b and data input/output parts 13a and 13b and a change-over switch 27 to switch simultaneously plural channels 23a and 23b to plural sound signal input/output parts 18a and 18b or plural data input/output parts 13a and 13b is provided. Consequently, when respective channels 23a and 23b transmit the sound signal and the data respectively, respective channels 23a and 23b can be used appropriately by the transmission contents. Thus, the same type of communications can be executed with one digital terminal simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone exchange, and more particularly to a telephone exchange that allows a single terminal to simultaneously carry out multiple communications.

[Conventional technology]

FIG. 5 is a block diagram of a digital telephone exchange, in which (1) is a time division switch, (2) is a call control processor, (3) is an interface processor, and (4a) to (4c). ) is a digital telephone terminal, (5
a) to (5c) are digital telephone subscriber circuits, (6
) is a central office line trunk, and (7) is a common trunk.

FIG. 6 is a general configuration diagram of the digital telephone terminal. In the figure, (11) is a control unit, (12) is an audio input/output unit, (13) is a data input/output unit, (14) is an input/output device, (15) is a handset, (16) is a speaker, ( 17) if audio amplifier, (18) PCM C0D
EC, (19) is the input/output control circuit, (20) is the line transceiver, (21) is the D-DC converter, (22a
) is an audio system control signal input/output, (22b) is a data system control signal input/output, (23a) is an audio system PCM signal, (23b) is an audio system control signal input/output.
) is a data signal, (24) is a control signal, (25) is a signal processing section, and (26) is a subscriber line.

FIG. 7 is an example of a signal frame structure between a digital telephone exchange and a digital telephone.

In the figure, (31a) and (31b) are information channels (Bl, B2), (32a) and (32b) are control signal channels (Di, C2).

Next, the operation will be explained. Here, the digital telephone terminal (4a) shown in FIG. 5 will be taken as an example.

Information channels (31a) and (31b) shown in FIG.
is connected to other digital telephone subscriber circuits (5a) to (5C) and the common trunk via the time division switch (1) in FIG.
(7) and central office line trunk (6). Furthermore, the control signal channels (32a) and (32b) in FIG.
) are the digital subscriber circuits (5a) to (5C) in FIG.
) and the call control processor (2) via the interface processor (3). And the seventh
The signal with the signal frame structure shown in the figure and the station power supply are layered on the subscriber line (26) in Figure 6 and are transmitted between the digital telephone terminal (4a) and the digital telephone subscriber circuit (5a) in Figure 5. sent and received. This signal is separated and multiplexed by the line transceiver (20) in Fig. 6, and the audio PCM signal (23
a) is an audio system input/output section (12) and a data signal (23b).
) are transmitted and received with the data input/output section (13). - The force control signal (24) is processed by the signal processing section (25), and the audio system control signal human output (22a) and data system control signal input/output (22b) are processed by the audio input/output section (12) and the data input/output section. (13). However, in the case of a digital telephone terminal configured as shown in Fig. 6, the input/output device (14) sometimes outputs control signals for data communication, so the audio signal input/output (22a) does not include data. Communication control signals may also be included. The input/output device (14) shown in FIG. 6 consists of a keyboard, a buzzer, an LCD display, etc. The input/output for these is the human output control device (19
) with the signal processing unit (25). The audio PCM signal (23a) is PCM C0DEC (18
) is encoded and decoded and transmitted to and received from the line transceiver (20). Handset (15), speaker (1)
The audio signal from 6) is sent to the PC via an audio amplifier (17).
M[:0DEf; (18). D
The C-DC converter (21) supplies the power required by the digital telephone terminal from the local power supply. Data input/output section (
13) does not necessarily receive power from the D[knee DC converter (21).

[Problem to be solved by the invention]

Conventional telephone exchanges are configured as described above.
Even if simultaneous communication of voice signals and data is possible, it is not possible to carry out multiple voice communications or data communications at the same time, and even if multiple information channels are added and the same communication system is able to communicate multiple times at the same time. However, when one communication system is stopped, the information channel becomes vacant, and the information channel cannot necessarily be used effectively.

This invention was made to solve the above-mentioned problems, and it is possible to simultaneously communicate with each communication system without increasing the number of information channels for each communication system, and it is possible to communicate with multiple communication systems simultaneously. The purpose of the present invention is to provide a telephone exchange that can simultaneously communicate with

[Means to solve the problem]

The telephone exchange according to the present invention distributes each of a plurality of channels for transmitting voice signals or data into an audio signal input/output section and a data input/output section, and simultaneously distributes a plurality of channels to a plurality of voice signal input/output sections or a plurality of data input/output sections. A changeover switch for switching to an input/output section is provided between a plurality of audio signal input/output sections, a data input/output section, and a plurality of channels.

[Effect]

According to the changeover switch of the present invention, when each channel transmits audio signals and data, each channel is divided into an audio signal input/output section and a data input/output section,
When each channel transmits an audio signal, each channel is switched to an audio signal input/output section, and when each channel transmits data, each channel is switched to a data input/output section. It can be used depending on.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (13a) and (13b) are data input/output units, (15a) and (15b) are handsets, (
17a).

(17b) is an audio amplifier, (18a), (18b)
PCM C0DEC1 (27) is an information channel changeover switch, and (28a) and (28b) are switches included in (27). In addition, each part in Figure 1 is
Matches the same numbered part in the diagram. FIG. 2 is an external view of the digital telephone terminal. (41) is an LCD display, (4
2) is a group of function buttons, (43) is a numeric keypad, and other parts correspond to the parts with the same numbers in FIG. Furthermore, (41)
- (43) are included in the input/output device (14). FIG. 3 is a diagram showing the configuration of a telephone exchange. Each part in FIG. 3 corresponds to the same numbered part in FIG. FIG. 4 is a diagram showing an example of a signal frame structure. Each part in FIG. 4 corresponds to the same numbered part in FIG.

Next, the operation will be explained. The digital telephone terminal (4
Take a) as an example. It is assumed that the digital telephone terminal (4a) has a configuration as shown in FIG. A signal with a signal frame structure as shown in FIG.
A) and the digital telephone subscriber circuits (5a) to (5c) are superimposed on the power supply and transmitted and received. Information channels (31a), (31b) (81, B2ch) in Figure 4
) is connected to other digital telephone terminals (4b), (4c) or a common trunk through the time division switch (1) in Figure 3.
(7), central office line trunk (6), etc. Control signal (32a), (32b) (DI, D2ch)
are the digital subscriber circuits (5a) to (5c) in FIG.
and the call control processor (2) via the interface processor (3). In the digital telephone terminal (4a), the signals having the signal frame structure shown in Fig. 4 are multiplexed and separated, and the information channel changeover switch (27)
will be output to the person. This switch has a control signal input (23a
), (23b) and the information from the interface processor (3) of the exchanger is controlled by the signal processing unit (25) in FIG. For example, if the information channels (23a) and (23b) transmit audio signals, the changeover (28a) of the changeover switch (27) switches the information channel (23a) to PCM C0DE(: (1
8a) F. The switch (28b) is the information channel (23
b) to PGM CODEC (18b). Also, if the information channels (23a) and (23b) transmit data, the switch (28a) connects the information channel (23a) to the data input/output section (13a), and the switch (28b) connects the information channel (23a) to the data input/output section (13a). ) to the data input/output section (13b).

Furthermore, if the information channel (23a) transmits an audio signal and the information channel (23b) transmits data, the switch (28a) switches the information channel (23a) to PCM C0.
DEC (18a) F. A switch (28b) switches and connects the information channel (23b) to the data input/output section (13b).

In this embodiment, two sets of handsets are provided from the beginning, but only one set may be provided at first, and additional sets may be added later. The same applies to the handset stand. Also, PGM C0DEfl: (18b) and information channel (23a), P[:M C0DEC (18a)
Connection with either or both of the data input/output unit (13a) and (13b) may be disabled. This also applies to the information channel (23b). The data input/output units (13a) and (13b) may be optional, similar to the handset, and may be added or removed later.

Here, an example of 2B+2D is given as the signal frame configuration, but other configurations may be used. Further, although only one speaker is attached, it is also possible to attach a plurality of speakers. The switch for changing the information channel may be constructed of any material as long as it does not adversely affect communication. Any number of handsets and speakers may be installed depending on the number of Bchs.

(Effects of the Invention) As described above, according to the present invention, a plurality of information channels accommodated in -digital telephone terminals can be used independently for voice and data communication, so that -digital telephone terminals can simultaneously communicate The same type of communication can be performed. Additionally, since the amount of audio hardware added is small compared to conventional systems, power consumption hardly increases. When data communication is not performed, it is equivalent to two telephones, but has the advantage that it does not take up as much space.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a digital telephone terminal according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the external appearance of the digital telephone terminal shown in FIG. 1, and FIG. Telephone exchange, FIG. 4 is a diagram showing an example of a signal frame configuration, FIG. 5 is a diagram showing an example of a general digital telephone exchange, FIG. 6 is a configuration diagram of a general digital telephone terminal, and FIG. 7 is a diagram showing an example of the same signal frame. In the figure, (13a) and (13b are data input/output units, (1
7a), (17b is an audio amplifier, (18a)
, (18b is PCM C0DEC. (23a) , (23b is information channel, (27
) is the information channel changeover switch. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo Oiwa 1a Jzb (Voluntary) 6. Contents of the amendments The Middle East Drawings 3 and 5 will be amended as shown in the attached sheets.

Claims (1)

[Claims] In a digital telephone terminal that accommodates a plurality of information channels and a plurality or a single signal channel in one terminal, each of the plurality of channels for transmitting voice signals or data is divided into an audio signal input/output section and a data input/output section, and A changeover switch that simultaneously switches multiple channels to multiple audio signal input/output sections or multiple data input/output sections,
A telephone exchange characterized in that it is provided with a plurality of voice signal input/output sections and a data input/output section, and between a plurality of channels.