JPH11136395A - Isdn terminal adapter and its doorphone connecting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ISDN terminal adaptor in which a conventional doorphone terminal adapter can be used without modifications, and its doorphone connection method. SOLUTION: This ISDN terminal adopter 10 has an S/T point interface circuit, a PCM codec circuit, a subscriber interface circuit 7, a doorphone interface circuit 33', and an analog port 9. Four-cores of a 6-pin connection for the analog port are used for transmission lines for doorphone voice signal and control signal to connect to the doorphone interface circuit and the subscriber interface circuit, the doorphone terminal adapter 20 is used for a repeater among the analog port, an analog terminal 30 and a doorphone 40, a connector 13 for telephone set connection and a connection port of the analog port are connected, a line connection connector 12 and the analog terminal line connection port 14 are connected and the doorphone connects to an output connector of a doorphone processing circuit 21 of the doorphone terminal adaptor 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN (Integr
ated Services Digital Network; For example, DSU (Digital Service Un
It relates to a terminal adapter connected to a digital line connection device), and in particular, an ISDN terminal adapter which can connect a door phone and an analog terminal device by directly connecting a door phone terminal adapter for a door phone-compatible analog telephone to an analog port thereof, and the like. Related to doorphone connection methods.

[0002]

2. Description of the Related Art As shown in FIG.
The terminal adapter 50 includes an analog terminal device (for example, an analog telephone 35) connected to a conventional analog line.
There is provided a device connection interface called an analog port (reference numeral 9) for connecting and using.

In some devices, an interface 8 of the door phone 40 is connected so that a call can be made between the door phone 40 and an analog telephone 35 connected to the analog port 9.
have.

However, since the interface 8 and the analog port 9 of the door phone 40 are different, different connectors are used.

On the other hand, although a modular terminal for connecting an analog telephone to a line has six pins, it actually uses only two cores of a third pin and a fourth pin in the center. There are doorphone-compatible analog telephones that use the remaining four cores (pins 1, 2, 5, and 6) that are not used for the doorphone interface.

FIG. 3 is a connection diagram showing a connection relationship between an analog line and a door phone of the above-mentioned door phone compatible analog telephone.

[0007] In the figure, a 6-pin modular code is used to connect to a 6-pin analog connection line on the intercom terminal adapter 20 indicating "line (LINE)" at a line connection port (6 pins) 11 of a subscriber telephone (analog) line 15. Connector 12 is connected, and door phone terminal adapter 20 is connected.
Is connected to the line connection port 14 of the analog telephone 31 corresponding to the doorphone by the same 6-core modular cord to the 6-pin connector 13 for connecting the analog telephone corresponding to the doorphone indicated by "telephone (TEL)".

The first, second, fifth and sixth pins of the 6-pin connector 13 for connecting a door phone-compatible analog telephone, which indicates "telephone (TEL)" of the door phone terminal adapter 20, are connected to the door phone via an internal door phone processing circuit 21. 40 is connected.

The third and fourth pins of the line connection port 14 of the door phone for analog telephone 31 are connected to an analog line interface circuit 32, and the remaining four cores of the first, second, fifth and sixth pins are connected to the door phone interface circuit 33. Connected.

In other words, the intercom terminal adapter 20 is connected between the intercom analog telephone 31 and the subscriber's telephone (analog) line 15 so that the central two-core (3rd and 4th pin) between the line and the telephone is connected. Simply passes the signal through the adapter and the remaining four cores (1,
The 2nd, 5th, and 6th pins) are used as a transmission line for the door phone audio signal and the control signal of the door phone 40.

[0011]

The conventional I shown in FIG.
The analog port 9 of the SDN terminal adapter 50 is
Although it is a 6-pin connector, only the center two cores are used in connection with analog devices, while two interfaces of an intercom and an analog port are separately provided. This causes an increase in the mounting area and cost of the ISDN terminal adapter.

On the other hand, in most homes, ISDs are used instead of existing subscriber telephone lines or newly installed.
In most cases, the N-line is used, so that the analog telephone 31 for the doorphone is already used in many cases. In this case, the user has the door phone terminal adapter 20. In this regard, the conventional IS
Since the DN terminal adapter has a function of a door phone processing circuit and directly connects the door phone, the door phone terminal adapter 20 is unnecessary. However, an increase in cost due to the incorporation of the above functions is inevitable.

The present invention has been made in view of the above circumstances, and has two interfaces, an analog port and a door phone, in a conventional ISDN terminal adapter, which is used to reduce the number of connection terminals, thereby reducing the mounting area and cost. It is an object of the present invention to provide an ISDN terminal adapter which aims at suppressing the above problem and which makes it possible to effectively use an unnecessary conventional intercom terminal adapter for analog telephones.

[0014]

According to the present invention, there is provided: (1) an ISDN terminal adapter connected to a DSU of an ISDN line, wherein at least an S / T point interface circuit, a PCM codec circuit, a control circuit, a subscriber interface circuit, and a door phone interface. A circuit and an analog port, and four cores other than two cores for connecting analog terminal equipment in the 6-pin connection port of the analog port are connected to the doorphone interface circuit as a transmission line for a doorphone audio signal and a control signal. The above object is achieved by providing an ISDN terminal adapter characterized by the following.

(2) In addition to having a 6-pin connector for connecting an analog line, a 6-pin connector for connecting a door phone-compatible analog telephone, and a door phone processing circuit,
The corresponding two cores of the two 6-pin connectors are directly connected to each other, and the remaining four cores of the 6-pin connector for telephone connection are connected to the doorphone processing circuit, and the output connector of the doorphone processing circuit is connected to the outside. A door phone terminal adapter having a configuration for connecting a door phone is used as a transponder between the ISDN terminal adapter described in (1) above, an analog terminal device and a door phone, and a 6-pin connector for connecting a door phone compatible analog telephone of the door phone terminal adapter is provided. A connector is connected to a 6-pin connection port of an analog port of the ISDN terminal adapter, and a 6-pin connector for connecting an analog line of the door phone terminal adapter is connected to a line connection port of the analog terminal device. Output connector of doorphone processing circuit of doorphone terminal adapter I, characterized in that connected to Kuta
The above problem is solved by providing a door phone connection method for an SDN terminal adapter.

Finally, the present invention provides a door phone interface adapter for a door phone compatible analog telephone by using four cores other than the center two cores of an analog port of an ISDN terminal adapter as a door phone interface. A separate analog port and intercom interface have been combined into one, and a common intercom terminal adapter for analog telephones can be used as is.

[0017]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a connection relationship between an ISDN terminal adapter, a door phone, an analog terminal device, and a door phone terminal adapter according to the present invention, and FIG. 2 is a block circuit diagram of the ISDN terminal adapter according to the present invention.

In FIG. 2, the ISDN terminal adapter 10 of the present invention has at least an S / T point interface circuit 3, a PCM codec 4, a control circuit 5, a subscriber interface circuit 7, a door phone interface circuit 33 ', and an analog port 9. In addition, four cores (1, 2, 5, and 6 pins) excluding two cores (3rd and 4th pins) for connecting analog terminal equipment in the 6-pin connection port of the analog port 9 are doorphones. It is characterized in that it is connected to the intercom interface circuit 33 'as a transmission line for audio signals and control signals.

As shown in FIG. 1, when a conventional door phone compatible analog telephone or a general analog telephone not compatible with a door phone or a G3 facsimile is connected to the 6-pin of the analog port 9 as the analog terminal equipment 30, The intercom 40 is connected together via the intercom terminal adapter 20, and the PHS master 16 integrated with the ISDN terminal adapter 10 transmits the P
A signal is transmitted from the intercom 40 to the HS terminal PS to ring the bell, so that an extension call can be made.

In this case, the connection method includes a doorphone terminal adapter 20 (a 6-pin connector for connecting an analog line, a 6-pin connector for connecting an analog telephone compatible with a doorphone, and a doorphone processing circuit). The corresponding central two cores of the connectors are connected as they are, and the remaining four cores of the 6-pin connector for telephone connection are connected to the doorphone processing circuit to connect the output connector of the doorphone processing circuit and the external doorphone. Connection) is used as a repeater between the analog port 9 of the ISDN terminal adapter 10, the analog terminal equipment 30 (an analog telephone or a G3 facsimile) and the door phone 40, and the door phone terminal adapter 20 is used to connect a door phone compatible analog telephone. 6-pin connector 13 and the ISDN terminal Analog port 9 of the adapter 10
And the 6-pin connector 12 for analog line connection and the line connection port 14 of the analog terminal equipment 30 are connected, and the doorphone 40 is connected to the output of the doorphone processing circuit 21 of the doorphone terminal adapter 20. Connect to connector.

As a result, the connection relationship between the conventional intercom terminal adapter 20 and the 6-pin connector 13 for connecting the intercom-compatible analog telephone to the 6-pin connector 12 for connecting the analog line is reversed.

Therefore, the conventional door phone terminal adapter 20 can be used as it is, and only the connection needs to be connected with care.

It should be noted that, in the conventional ISDN terminal adapter, four cores other than the two cores for connecting analog terminal equipment in the 6-pin connection port of the analog port are used to transmit door phone audio signals and control signals. There is no idea to use it as a line or to use a conventional door phone terminal adapter as it is.

Further, since the intercom function of the intercom analog telephone 31 is not used, the analog telephone need not necessarily be an intercom and may be a G3 facsimile.

[0026]

As described above, the IS according to the present invention is
The DN terminal adapter and the doorphone connection method thereof have the following advantages. (1) The two interfaces of the analog port and the doorphone are integrated into one to reduce the number of connection terminals, thereby reducing the mounting area and suppressing the cost. .

(2) There is an excellent effect that a conventional door phone terminal adapter for a door phone compatible analog telephone can be used as it is.

[Brief description of the drawings]

FIG. 1 is a diagram showing a connection relationship among an ISDN terminal adapter, a door phone, an analog terminal device, and a door phone terminal adapter according to the present invention.

FIG. 2 is a block circuit diagram of an ISDN terminal adapter according to the present invention.

FIG. 3 is a connection diagram showing a connection relationship between an analog line and a door phone of a conventional door phone compatible analog telephone.

FIG. 4 is a diagram showing a connection relationship between a conventional ISDN terminal adapter, a door phone, and an analog telephone.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ISDN line 2 DSU 3 S / T point interface circuit 4 PCM codec circuit 5 Control circuit 7 Subscriber interface circuit 8 Connector for door phone interface circuit 9 Analog port 10, 50 ISDN terminal adapter 11 Line connection connector (6 pins) 12 “ "LINE (LINE)" display connector (6 pins) 13 "Telephone (TEL)" display connector (6 pins) 14 Line connection port (6
15) Subscriber telephone (analog) line 16 PHS base unit 20 Doorphone terminal adapter 21 Doorphone processing circuit 30 Analog communication equipment 31 Analog telephone for doorphone 32 Line interface circuit 33, 33 'Doorphone interface circuit 40 Doorphone PS PHS handset

Claims (2)

[Claims] 1. An ISDN connected to a DSU of an ISDN line.
In the terminal adapter, at least an S / T point interface circuit, a PCM codec circuit, a control circuit,
A subscriber interface circuit, a doorphone interface circuit, and an analog port, and four cores other than two cores for connecting analog terminal equipment in the 6-pin connection port in the analog port are used as transmission lines for doorphone audio signals and control signals. An ISDN terminal adapter connected to a door phone interface circuit. 2. A 6-pin connector for connecting an analog line,
It has a 6-pin connector for doorphone-compatible analog telephone connection and a doorphone processing circuit, and directly connects the corresponding 2-core pair of the two 6-pin connectors to each other, leaving the remaining 6-pin connector for telephone connection. A relay between an ISDN terminal adapter, an analog terminal device, and a door phone according to claim 1, wherein a door phone terminal adapter configured to connect four cores to the door phone processing circuit and connect an output connector of the door phone processing circuit to an external door phone is connected. A 6-pin connector for connecting the doorphone-compatible analog telephone of the doorphone terminal adapter and the analog port 6 of the ISDN terminal adapter.
A pin connection port, a 6-pin connector for connecting the analog line of the doorphone terminal adapter and a line connection port of the analog terminal device, and the doorphone is connected to an output connector of a doorphone processing circuit of the doorphone terminal adapter. A method for connecting a door phone of an ISDN terminal adapter, comprising: