JP3324839B2 - Telephones and intercom telephones - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone and an intercom telephone device of a so-called intercom telephone having a caller ID function for informing a called party of a telephone number of a caller. They try to use services.

[0002]

2. Description of the Related Art Conventionally, an intercom telephone has no means for demodulating a caller ID coming from a telephone exchange. Here, the caller ID means that the telephone exchange modulates information such as the telephone number and name of the caller and the date and time of the call into a modem signal, and transmits the first and second ring tones (bell). Things. Such a cola ID service is widely used in the United States and Canada.

[0003]

However, a plurality of intercom-equipped telephones constituting an intercom telephone apparatus have conventionally been provided with a caller ID receiving circuit (caller ID) for each telephone.
(D part) must be added, resulting in a problem of increased cost.

An object of the present invention is to solve the above problems and to provide an intercom telephone with a cola ID function which minimizes the cost.

[0005]

In order to achieve the above object, the present invention provides a telephone having intercom communication means, a caller ID section for demodulating a caller ID coming from a telephone exchange, a line interface and a dial function, and the like. A telephone unit having a handset; and an intercom unit having an extension calling interface and an extension calling function. The caller ID unit demodulates a telephone number of a caller sent from a telephone exchange, and The telephone number data of the caller is transmitted to another telephone connected to the common line through the cam unit.

Also, there is provided an intercom telephone device in which a plurality of telephones are connected to a common line so as to enable intercom telephone communication between the telephones. Each of the telephones has a Tel unit having a line interface, a dial function and a handset. And an intercom unit having an extension calling interface and an extension calling function, and at least one of the plurality of telephones has a caller ID unit for demodulating a caller ID coming from a telephone exchange. , The cola ID
The demodulation unit demodulates the telephone number of the caller sent from the telephone exchange and sends the telephone number data of the caller to another telephone connected to the common line through the intercom unit. The telephone number data is transferred and input via the cam unit.

[0007]

According to the present invention, at least one of a plurality of intercom-equipped telephones constituting an intercom telephone device is provided.
The base has a caller ID section for demodulating a caller ID coming from the telephone exchange, and transfers and inputs to other intercom-equipped telephones via the intercom section. Therefore, the caller ID section is not required for a plurality of other intercom-equipped telephones, and the cost can be reduced.

[0008]

FIG. 1 is a block diagram showing the configuration of an intercom telephone apparatus with a caller ID function according to an embodiment of the present invention. In FIG. 1, Tel1, 2,... N are public telephone lines T.
And R indicate an intercom-equipped telephone connected to R, and a symbol indicates a function as the intercom-equipped telephone.
Block (line interface, pulse dial,
Handset). Is a block of an intercom unit (extension call interface, extension call, etc.) indicating a function as an intercom-equipped telephone, a microcomputer for controlling a Tel unit, an intercom unit, and a caller ID unit, and is transmitted from a telephone exchange. This is a caller ID section for demodulating the received caller ID. Tel2 ... N is Tel
In this case, the caller ID part is omitted as compared with 1. Each Tel has a display unit (not shown) for displaying a caller ID sent from the telephone exchange.

Next, the operation of the present apparatus will be described.
As is well known, the intercom unit transmits and receives data indicating the state of each Tel and forms an extension communication path based on information from the microcomputer. The contents of the data include the line use status of each Tel, the call destination, the telephone number of the caller, and the like.

FIG. 2 is a timing chart showing a data communication system of the intercom. As shown in FIG. 2, the data format is called a tone burst system, and is 455 kHz.
By changing the ON / OFF cycle of the carrier signal, the digital signal corresponds to 0/1 of digital data. Where T
Since el1 has a caller ID part, it demodulates the telephone number of the caller sent from the telephone exchange and outputs the number data to the microcomputer. The microcomputer receiving this data sends the telephone number data of the caller to another Tel through the intercom unit. This data is input to the microcomputers of the respective Tels via the intercom units of the Tels 2,...

[0011] In this way, the cola ID is
Can be demodulated and the caller ID can be transferred and input to another Tel, so that the function can be realized at low cost without any trouble.

[0012]

As described above, the cola I of the present invention is used.
The intercom telephone device with the D function has a caller ID portion in at least one of the intercom telephones among a plurality of intercom telephones connected to the telephone line, so that the other intercom telephones have a caller ID. , The cost for receiving the cola ID is not required.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an intercom telephone device with a caller ID function according to an embodiment of the present invention.

FIG. 2 is a timing chart showing a method of intercom data communication.

[Explanation of reference numerals] ... Tel part, ... intercom part, ... microcomputer,
... Cola ID part, Tel1, Tel2, ... TelN ... Telephone with intercom.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04Q 3/58 107 H04M 1/57

Claims (2)

(57) [Claims] 1. A that phones have a intercom a communication vehicle, cola I to demodulate the caller ID coming from the telephone exchange
And Part D, the line interface and dial function and handset
A Tel unit with an extension telephone interface and an extension calling function
And an intercom unit , wherein the caller ID unit transmits a caller's power transmitted from the telephone exchange.
Demodulating the telephone number, the call through the intercom unit
Telephone number data to another telephone connected to the common line
Sending phone characterized by. 2. A plurality of telephones each connected to a common line.
To enable intercom call operation between telephones.
A tarmac telephone device, Each telephone has a line interface, dial function and
Tel unit with handset and extension call interface
And an intercom with call extension
And At least one of the plurality of telephones is a telephone exchange.
Has a caller ID section for demodulating the caller ID coming from
The caller ID is a caller sent from the telephone exchange.
Demodulates the telephone number of the
Caller's phone number data to another phone connected to a common line
The other telephones via the intercom unit.
Characterized in that the telephone number data is transferred and input.
Tarcum telephone equipment.