JPS6214984B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blocking method when different types of home equipment are installed in combination with telephones in a telephone network.

In recent years, a system has been adopted in which a facsimile terminal (in-home equipment) is connected to a subscriber's telephone in duplicate and installed in an exchange. Focusing on incoming facsimile calls for this subscriber, there are two cases: receiving information based on one's own request and receiving information unilaterally.
There are two possibilities. However, in the latter case, subscribers have the disadvantage that if a call is received on their facsimile terminal during a busy time or at a time when they would otherwise be making a call, they will not be able to make the necessary call if the call is held on hold for a long time, even if information is not very important. be.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks by installing a memory for recording the availability of facsimile terminals (in-house equipment) and providing a means for freely blocking facsimile terminals (in-home equipment) at the request of the subscriber. The object of the present invention is to provide a multiple-type heterogeneous in-house device blocking method.

According to the present invention, a memory is provided for recording the availability of different types of home equipment of a subscriber having different types of home equipment connected in multiple ways to a telephone set, and a memory is provided corresponding to the different types of home equipment of the subscriber. It records the availability and occupancy in the memory, and allows the subscriber to connect only when the subscriber is free and the different type of in-home equipment receiving calls is also free.

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a relay system showing one embodiment of the public facsimile communication system of the present invention. SubA is the sending subscriber, SubB is the receiving subscriber, F is the facsimile terminal, C is the switching device between the telephone and F, LS is the subscriber exchange, OGT is the outgoing trunk, ICT is the incoming trunk, LM is the subscriber free/occupied storage. , CPU is the central control unit, TS is the toll exchange, CSE is the common line signaling equipment, FM is the facsimile terminal free/occupied storage, TP is the signaling trunk and PB receiver, STOC
is a store-and-forward machine.

In facsimile communication, when sending an image signal from F of SubA to SubB, a special number (for example 162) is dialed, and when the LS station receives this special number, the connection is extended to the TS station that handles facsimile, and at that time the TS
SubA's phone number is also sent to the station. SubA is
When the second dial tone from the TS station's TP is confirmed, the SubB telephone number is sent directly to the TS station as a PB signal. When the TS station receives SubB's phone number
The CPU sends the phone numbers of SubA and SubB to STOC via CSE, operates SubA's C and switches to F, and sends the image signal from SubA to SubA-F-C.
- LS - OGT - ICT - TS - Accumulated via STOC,
SubA's connection is disconnected. Next, an incoming request signal is sent from the STOC to the TS CPU via the CSE, and the TS
Now, connect to SubB based on that signal.
Here, unless the LM of LS is displayed as blocked, SubB
Transfer the image signal of SubA to F of STOC−TS−OGT−ICT
- Send via LS-C. Here, if SubB extends the connection to the TS station by dialing a special number (for example, 162) in advance and sends a blocking instruction signal (for example, #1) for the facsimile end to the TS station using a PB signal, then the TS station uses TP to connect to the LS station. is sent from
When SubB's telephone number is received and a blockage instruction signal is received from SubB, the CPU reads out the memory in which the last four digits of the subscriber's telephone number corresponding to the area code shown in Figure 2 are recorded in the FM. A verification circuit (not shown) in the CPU verifies the last four digits of SubB's telephone number, and writes 0, indicating that the facsimile terminal is blocked, in bit position 1 of the verified address.

After that, when SubB receives a fax call, TS
Before establishing a connection with SubB, the station sends the FM SubB facsimile terminal's free/occupied display bit to the CPU.
is read, and if it is 0, it is determined that it is blocked, and CSE
It is possible to send an in-use signal to the STOC via the STOC, thereby suppressing the sending of image signals from the STOC.

As explained above, the present invention enables subscribers to freely and effectively use telephones or dually connected home equipment by installing a memory that records the availability of facsimile terminals (home equipment). It is.

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram showing an embodiment of the public facsimile communication system of the present invention, and FIG. 2 is a layout diagram showing an example of the free/occupied display memory in FIG. 1. SubA...Sending subscriber, SubB...Receiving subscriber,
F...Facsimile terminal, C...Switching device, LS
...Subscriber exchange, OGT ...Outgoing trunk, ICT
...Incoming trunk, TS...Toll exchange, TP...Signal trunk and PB receiver, CPU...Central control unit, CSE...Common line signaling device, LM...Subscriber free/occupied storage, FM... ...facsimile terminal free/occupied storage device, STOC...storage and exchange machine.

Claims (1)

[Scope of Claims] 1. In an electronic exchange controlled by a storage program, a first memory for recording the availability of a subscriber having a telephone and a different type of home equipment connected to the telephone in multiple ways; a second memory for recording the availability of the different type of home equipment according to a dial special number instruction from the subscriber; A multiple type heterogeneous home equipment blocking method characterized in that the heterogeneous home equipment is connected only when vacancy is recorded.