JPS6266794A - Telephone network communicating equipment - Google Patents

Abstract

PURPOSE:To obtain a high quality telephone network by providing an attenuation equalizer that equalizes the attenuation distortion of lines and makes long distance data communication possible in an electronized telephone exchange and thereby canceling the attenuation distortion even when a circuit is changed. CONSTITUTION:The extension circuit 2 of an electronized private branch exchange EPBX 1 detects the off-hook of caller side. A processor 4 cancels the attenuation distortion by calling out attenuation distortion data from caller side to EPBX 1 from a memory and setting the data to a digital equalizer. The processor 4 connects a digital channel equipment 3 basing on a dial signal received by a dial signal receiver 7 and at the same time, sets the attenuation distortion data from the EPBX to called subscriber side to the equalizer 16 of the called subscriber side and cancels the attenuation distortion data. When a connection is completed after that, the transmission of signals is started. At this time, the attenuation distortion of lines from called subscriber side to EPBX 1 and from EPBX 1 to the called subscriber side is canceled by the equalizer 16.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone network communication device that performs data communication using a telephone network.

[Conventional technology]

FIG. 4 is a block diagram of a conventional electronic private branch exchange (hereinafter abbreviated as EPBX).

In Fig. 4, 1 is an EPBX, 2 is an extension circuit that is an interface with the local area network, 3 is a digital communication path device that connects the calling line and the other party's line, and 4 is an EPBX.
5 is a trunk circuit that is an interface with the office line 14; 6 is an audible tone oscillator that outputs a ring tone, busy tone, etc.; 7 is a dial that receives a dial signal. 8 is a signal receiver, 8 is a relay stand interface for an operator, and 9 is an operator relay stand. Further, 10 is a local telephone, 11 is a data terminal, 12 is a facsimile machine (hereinafter abbreviated as FAX), 13 is a line of a private telephone network, 14 is a central office line, and 15 is a public network.

Next, we will discuss the conventional communication method configured in this way in the fifth section.
This will be explained using FIG. Figure 5.

Figure 6 is an example of an in-house FAX network.
X12a will be explained as receiving FAX 12b.

(1) Dial the dial number of the other party's telephone 10b using the telephone 10'a.

(2) The dial signal enters the EPBXl via the line 13a, and the dialed number is determined and the other party's telephone 10b is called.

(3) Now that the line is connected, send the FAX12
A sends a facsimile signal to receiving FAX 12 a.

(4) When the facsimile signal has been sent and received by each FAX, the line is disconnected.

Data communication is performed by the above procedure. However, this is EPBX 1 and FAX 12a.

12b is short, and if it becomes a long distance, one more EPBXlb is added to form a local area network as shown in FIG. Regarding the operation, EPBXla,
The number of connections between lbs increases only through the central office line 14.

The above is the operating procedure seen from the outside, but if you look at the operation of the EPBX, (1) Off-hook is detected by the extension circuit 2.

(2) The dialing pulse is received by the dialing signal receiver 7.

(3) The processor 4 discriminates the dial signal, and the digital channel device 3 connects the calling side and the called side.

(4) During the above operations, the audible tone oscillator 6 transmits a ringing tone to the calling party.

(5) When the connection is completed, the analog signal from the line is converted into a digital signal by the extension circuit 2, and then converted into an analog signal by the extension circuit 2 of the other party through the digital communication path device 3 and sent to the other party.

[Problem that the invention seeks to solve]

As explained above, in the conventional local telephone network communication system,
PBXs only converted analog signals to digital signals and exchanged them, so when lines became long, it was necessary to install EPBXs to match the distance.

This invention was made to solve the above-mentioned problems, and aims to make long-distance data communication possible with a single EPBX by taking advantage of the feature that EPBXs exchange using digital signals. .

[Means for solving problems]

Therefore, the telephone network communication device according to the present invention is characterized in that the electronic telephone exchange is equipped with elegance such as attenuation that equalizes the attenuation distortion of the line and enables long-distance data communication.

[Effect]

The attenuation distortion of each line is equalized by an attenuation equalizer.

An embodiment of the present invention will be described below with reference to FIG.

In Figure 1, 1 is an EPBX, 2 is an extension circuit that is an interface with the local area network, 3 is a digital communication path device that connects the calling line and the other party's line, and 4 is an EPBX.
5 is a trunk circuit that is an interface with the office line 14; 6 is an audible tone oscillator that outputs a ring tone, busy tone, etc.; 7 is a dial that receives a dial signal. 8 is a signal receiver, 8 is a relay stand interface for an operator, and 9 is an operator relay stand. 10 is a local telephone, 11 is a data terminal, 12 is a facsimile machine (hereinafter abbreviated as FAX), 13 is a line of the local telephone network, 14 is a central office line, 15 is a public network, and 16 is an attenuation added as hardware in the present invention. This is an equalizer (hereinafter referred to as a digital equalizer).

Next, the communication method of the present invention will be explained.

According to the communication system of the present invention, utilizing the fact that the EPBX performs digital signal processing and storage programming, (1) the attenuation distortion data of the line from the terminal to the EPBX is stored in the memory.

(2) A digital equalizer 16 that equalizes attenuation distortion by digital signal processing is inserted between the extension circuit 2 and the digital communication path device 3.

Realization is achieved by doing so.

The following explanation is similar to the operation of a conventional EPBX: (1) Off-hook is detected by extension circuit 2.

(2) The attenuation distortion data from the calling side to the EPBX 1 is retrieved from the memory by the processor 4 and set in the digital equalizer 16 to cancel the attenuation distortion.

(3) The dialing pulse is received by the dialing signal receiver 7.

(4) The dial signal is judged by the processor 4, the digital communication path device 3 is connected to the calling side and the called side, and the digital equalizer 16 on the called side is attenuated from the EPBX 1 to the terminal (called side). Set the distortion data and cancel the attenuation distortion data.

(5) During the above operations, the audible tone oscillator 6 transmits a ringing tone to the calling party.

(6) When the connection is completed, the analog signal from the line is converted into a digital signal by the extension circuit 2, and the analog signal is converted into an analog signal by the extension circuit 2 of the other party through the digital communication path device 3 and sent to the other party.

At this time, the attenuation distortion of the lines from the calling side to the EPBX and from the EPBX to the called side are canceled out by each digital equalizer 16.

The method described above enables long-distance data communication.

Although the above embodiment (Fig. 1) has been described as a private telephone network, even when the private telephone network connects to the public network, it is possible to connect to the public network without attenuation distortion of the line within the premises. We will be able to provide you with a very high quality telephone service.

Also, if a digital equalizer 16 is inserted on the trunk circuit 5 side as shown in FIG.
If you connect to the station′! The attenuation distortion of lAl4 can be corrected in the same way, and if a digital equalizer 16 is inserted in both the extension circuit 2 and the trunk circuit 5 as shown in FIG. The correction is EP
Correction can be performed mainly on BX, and a commercial quality telephone network without attenuation distortion of premises and office lines can be provided.

〔Effect of the invention〕

As explained above, the telephone network communication device according to the present invention has elegance such as attenuation, so even if lines are replaced, attenuation distortion can be offset and a high quality telephone network can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a block diagram of an EPBX showing another embodiment of the present invention, FIG. 3 is a block diagram showing another embodiment of the present invention, and FIG. The figure is a configuration diagram of a conventional EPBX. FIG. 6 is an example of a private telephone network for explaining the conventional operation. 1 is an EPBX, 2 is an extension line, 3 is a digital communication path device, 4 is a processor, 5 is a trunk circuit, 6 is an audible sound oscillator, 7 is a dial receiver, 8 is an attendant console interface, 9 is an operator attendant console, 10 is a private telephone, 11 is a data terminal, 12 is a facsimile machine, 13 is a private telephone network line, 14 is a central office line, 15 is a public network, and 16 is a digital telephone network.
It's an equalizer. In the figures, the same reference numerals indicate the same or equivalent parts. Agent Masuo Oiwa (and 2 others) 〒3
Figure 4 Figure 1 Figure 16 TE''I Jikuruikou 1P Figure 6 Figure 6 Procedural amendment (0 Kaguchi Sowa 6'g July 16th 1, Indication of the case Tokuhan Sho. No. 0-20616□ 2,
Name of the invention: Telephone network communication device 3, Representative of the person making the amendment: Moriya Shiki 5, Detailed description of the invention to be amended. 6,? ! The statement ``Quality for 1 time'' on page 7, line 19 and page 8, line 8 of the detailed description of contents will be corrected to ``high quality.''that's all

Claims (1)

[Claims] In a telephone network communication device that connects each line using an electronic telephone exchange and enables communication between each line,
A telephone network communication device characterized in that the electronic telephone exchange is equipped with an attenuation equalizer that equalizes the attenuation distortion of the line to enable long-distance data communication.