JPS62207097A - Automatic private branch exchange - Google Patents

Abstract

PURPOSE:To use both the generals public net work and the facsimile communication net work by a facsimile equipment containing the extension by detecting an incoming call by an incoming call identification function part, transmitting a calling signal to the stored facsimile equipment, and connecting the equipment with a line based on the responce from the equipment. CONSTITUTION:A controller 6 switches a switching circuit 42 to the incoming call identification side to check whether or not there is the incoming call at the first identification circuit 44 or the second identification circuit 45. In case of identifying a 16Hz-calling signal from the general public net network the controller 6 switches the circuit 42 to the main body 41 side in order to allow it to arrive at the desired facsimile equipment 1 via an operator or DID service. On the other hand, in case of an arrival from the facsimile communication net work i.e., identifying a 1,300Hz calling signal, the controller 6 switches the circuit 42 to the main body 41 side in order to connect the facsimile equipment 1 corresponding to the trunk with a calling signal generating circuit 5 via a channel equipment 3, so that a calling signal of 1,300Hz is transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic private branch exchange that connects a facsimile machine to a facsimile communication network.

(Prior Art) Conventionally, automatic private branch exchanges have housed and used not only ordinary telephones but also facsimile machines. On the other hand, facsimile machines have been put into practical use that have the ability to handle outgoing and incoming calls on both general public networks and facsimile communication networks.

(Problem to be solved by the invention) However, since conventional automatic private branch exchanges were not compatible with facsimile communication networks, even if the facsimile device itself is compatible with facsimile communication networks, automatic private branch exchanges cannot be used with automatic private branch exchanges. If the communication function of the facsimile machine is accommodated, the communication function cannot be used effectively, and conversely, if you try to make use of the communication function of the facsimile machine, you have no choice but to connect it directly to the facsimile communication network, and the purpose of using an automatic private branch exchange is lost. , there was a problem that it became uneconomical.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems and provide an automatic private branch exchange capable of connecting a facsimile device to a facsimile communication network.

(Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, incoming call identification compatible with a facsimile communication network includes a music part, a calling signal generating part in the facsimile communication network, and the incoming call identification function part. The apparatus is equipped with a control means for connecting the calling signal generating part to the corresponding facsimile machine, monitoring the response, and connecting the line and the facsimile machine in response to the response when an incoming call from the facsimile machine is identified.

(Function) According to the present invention, when an incoming call is received from a facsimile communication network, it is detected by the incoming call identification function section, and a paging signal is sent from the paging signal generation section to the housed facsimile device. Based on the response, the line and facsimile device are connected, and communication is performed thereafter.

(Embodiment) FIG. 1 shows an embodiment of an automatic private branch exchange according to the present invention. In the figure, 1 is a facsimile machine (FAX), 2
is the subscriber circuit (LC), 3 is the communication path device (NW), and 4 is the subscriber circuit (LC).
5 is a bidirectional office line trunk (BWT), 5 is a calling signal generation circuit, and 6 is a control device (CC).

The facsimile device 1 has functions compatible with both a general public network and a facsimile communication network.

Further, 1a is a telephone compatible with the facsimile device 1.

As shown in FIG. 2, the bidirectional office line trunk 4 includes a main body circuit 41, a switching circuit 42, an H-lance 43, etc., a first incoming call identification circuit (hereinafter referred to as the first identification circuit) 44, and a first incoming call identification circuit (hereinafter referred to as the first identification circuit) 44. 2
It consists of an incoming call identification circuit (hereinafter referred to as a second identification circuit) 45.

The main circuit 41 has the same configuration as a conventional two-way office line trunk, except that it does not include an incoming call identification function section for the 161-1z paging signal.

The switching circuit 42 connects a central office line such as a general public network or a facsimile communication network to a first identification circuit 44 or a second identification circuit 45 via a transformer 43 when identifying an incoming call, and also connects it to a first identification circuit 44 or a second identification circuit 45 after identifying an incoming call. is for connection to the main circuit 41.

The first identification circuit 44 receives an incoming call from a facsimile communication network,
That is, the second identification circuit 45 is for identifying a 1300)-lz calling signal, and the second identification circuit 45 is for identifying an incoming call from a general public network, that is, a 16 Hz calling signal.

The transformer 43 is provided so that when a facsimile communication network is connected as a central office line, the second identification circuit 45 connected in parallel satisfies the characteristic impedance standard.

According to the standard, the characteristic impedance of this part is 300Hz to 340Hz when J3 is in an open DC state.
A balanced circuit with resistance of 201Ω or more in the 0Hz range.

The call A5 generation circuit 5 generates a 1300 Hz call signal.

FIG. 3 does not show the flow of incoming call identification and connection processing in the control device 6, and the operation at the time of incoming call will be described below in accordance with this flow. Note that only the - two-way central office line trunk will be of interest here.

First, when performing incoming call identification, the control device 6 controls the switching circuit 4
2 to the incoming call identification side (Sl), and checks whether there is an incoming call in the first identification circuit 44 or the second identification circuit 45 (82
．． 83).

When the control device 6 identifies an incoming call from the general public network, that is, a 16H2 calling signal, by the second identification circuit 45, the switching circuit 4
2 is switched to the main circuit 41 side (S5), and the call is received at the corresponding facsimile machine 1 through the conventional connection process, that is, via the operator or through the DID service. In this case, the incoming call to the facsimile machine 1 is a 20H call from a signal generator (not shown).
This is done by the ringing signal of z, so that the facsimile machine 1 can also identify that the call is received from a general public network.

On the other hand, the control device 6 receives calls from the facsimile communication network,
That is, when the first identification circuit 44 identifies a 1300Hz calling signal, the switching circuit 42 is switched to the main circuit 41 side (
S6), the facsimile machine 1 compatible with the central office line and the paging signal generation circuit 5 are connected by the communication line device 3, and the
1-12 is sent out (S7).

Next, when the control device 6 identifies the primary response (closed loop) from the facsimile device 1 (S8), the control device 6 connects the bidirectional station line i to rank 4 and the facsimile device 1 using the communication path device 3 (S9), and further A closed loop on the central office line side is formed in the main body circuit 41 (810), and a response is returned to the facsimile communication network. Thereafter, the communication operation is left to the facsimile device 1.

Note that the incoming call identification process is actually performed at predetermined intervals.

When making a call, you can do so without worrying about whether it is a general public network or a facsimile communication network. That is, by connecting a two-way office line trunk corresponding to the facsimile machine using a special number, subsequent dial operations can arbitrarily make calls to the general public network or facsimile communication network.

In the above embodiment, the incoming call identification is performed on the bidirectional office line trunk, that is, in correspondence with the office line, but it may be performed on a common part of each trunk.

(Effects of the Invention) As explained above, according to the present invention, an incoming call from the facsimile communication network is detected by the incoming call identification function unit compatible with the facsimile communication network, and the paging signal generation unit calls the housed facsimile machine. A signal is sent, and based on the response from the facsimile machine, the line and the facsimile machine are connected, and communication can be carried out thereafter, so both the general public network and the facsimile communication network can be used with a facsimile machine that accommodates extension lines. It is more economical than the case where a separate office line for the facsimile communication network is drawn, and has the advantage of being able to utilize many services.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of an automatic private branch exchange according to the present invention, FIG. 2 is a diagram showing details of a bidirectional office line trunk, and FIG. 3 is a flowchart of call identification and connection processing. 1...Facsimile device, 3...Communication path device, 4.
...Bidirectional office line trunk, 5...Call signal generation circuit,
6...Control device, 44...First incoming call identification circuit. Patent Applicant: Oki Electric Industry Co., Ltd. Representative Patent Attorney Furu 1) Sei Takashi Figure 2

Claims (1)

[Scope of Claims] An incoming call identification function unit compatible with a facsimile communication network; a calling signal generating unit in the facsimile communication network; and when an incoming call from the incoming call identification function unit is identified, the calling signal is sent to the corresponding facsimile machine. 1. An automatic private branch exchange, comprising: a control means for connecting a generating section of a facsimile, monitoring a response thereof, and connecting a line and a facsimile machine in accordance with the response.