JPH11136387A - Isdn terminal adaptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ISDN terminal adaptor whose cost is reduced and whose circuit mount area is decreased. SOLUTION: Plural dial-in numbers or global incoming call numbers and at least one dial-in number are assigned to an analog port 10 in the ISDN terminal adaptor, the plural numbers are divided into at least two call reception groups, and in the case of an incoming call to the one group (e.g. an incoming call to a contractor line number XXX-XXX-XXXO), a bell signal B is sent to an automatic answering telephone set automatic answering telephone set 8 and a G3 facsimile equipment 9 connecting to the analog port 10, and when these is an incoming call to the other group (e.g. a non-ringing incoming call dial-in number XXX-XXX-XXX1), a non-ringing signal M is sent from the analog port 10 and transmission of the incoming call signal to the analog port 10 is controlled, by a built-in control circuit 21 and, e.g. one analog port 10 is used for both the G3 facsimile equipment 9 and the automatic answering telephone set 10 similarly to a conventional device.

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 (DSU)
The present invention relates to a terminal adapter connected to an ervice unit (digital line connection device), and particularly to a function of an analog port thereof.

[0002]

2. Description of the Related Art ISDN (for example, IN provided by NTT)
A terminal adapter (in a case of a single product, integrated with a DSU, or built in another terminal device) connected to a DSU (Digital Service Unit; digital line connection device) of the S-net 64) is a conventional public. An analog line terminal device connection interface called an analog port for connecting and using an analog line terminal device such as an analog telephone, a facsimile (hereinafter simply referred to as a facsimile), and a data modem for a telephone network is provided. I have.

[0003] Usually, there are two to three analog ports, one connected to an answering machine, and the other to G.
Analog port and analog line terminal equipment are connected in one-to-one correspondence, such as connecting to 3 fax machines,
In addition, one dial-in number can be assigned to each analog port so that incoming calls are individually received in correspondence with different telephone numbers.

FIG. 3 is a diagram showing an example of using a telephone answering machine and a G3 fax as analog line terminal devices connected to two analog ports built in the conventional ISDN terminal adapter.

[0005] In the figure, of the two analog ports 5 and 6 of the ISDN terminal adapter 4, a subscriber line number XXX-XXX-XXX0 is assigned to the analog port 5 and an answering machine 8 is connected thereto. The other analog port 6 has a dial-in number XX.
X-XXX-XXX1 is assigned and G3 fax 9 is connected. Reference numeral 1 denotes an ISDN network (for example, the INS net 64), and reference numeral 3 denotes a DSU.

[0006] Contractor line number XXX-XXX-XXX0
, A call is received by the answering machine 8 connected to the analog port 5 assigned to this number, the bell rings, and the dial-in number XXX-XXX-X
When the call reaches XX1, the call arrives at the G3 fax 9 connected to the analog port 6 assigned to this number. Of course, the same applies when a plurality of dial-in numbers are assigned to the analog ports 5 and 6, respectively.

[0007]

However, as can be seen from the above conventional example, one analog port is assigned one telephone number (dial-in number or subscriber line number) and one analog line terminal. Since the devices are connected, it is necessary to prepare analog ports in the ISDN terminal adapter 4 as many as the number of the analog line terminal devices to be connected, which increases the cost of the terminal adapter itself and the circuit mounting area. .

On the other hand, the use of analog line terminal equipment in SOHO (small office / home office), which accounts for about 90% of general homes and offices nationwide, in which the use of ISDN is expected to spread dramatically in the future, will be considered in turn. For example, when using the answering machine 8 and the G3 fax 9 by connecting them to analog ports, even if the dial-in numbers are assigned so that the analog ports 5 and 6 to which they are connected receive different numbers, respectively. Actually, it is rare that both the answering machine 8 and the G3 fax 9 are simultaneously in the communication state.

Therefore, a plurality of analog line terminal devices are connected together to one analog port provided in the ISDN terminal adapter, and two different dial-in numbers or contractor line numbers and dial-in numbers are allocated and used respectively. If possible, the number of analog ports to be provided as terminal adapters can be reduced, and in practice one will suffice.

That is, for example, an answering machine and a G3 fax are connected together as analog line terminal equipment to one analog port, and only one of the answering machine and the G3 fax is selectively received according to the number received. If possible, the number of analog ports will be reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made by connecting a plurality of analog line terminal devices to one analog port of an ISDN terminal adapter to enable the same use as in the prior art. The purpose is to reduce the cost of the adapter and the circuit mounting area.

[0012]

SUMMARY OF THE INVENTION The present invention provides: (1) An ISDN terminal adapter having an analog port for connecting and using an analog line terminal device. A dial-in number or (b) a global incoming number and at least one dial-in number are allocated, and the plurality of numbers are divided into at least two incoming groups. A bell signal is sent to the device, and when the call arrives at the other group, the built-in terminal adapter control circuit controls the sending of the incoming signal to the analog port so that a silent signal is sent from the analog port to the analog line terminal device. Providing an ISDN terminal adapter Solves the above problem.

(2) In the ISDN terminal adapter according to the above (1), when a call is made from the analog line terminal device connected to the analog port, the caller ID is notified to the digital line network by the facsimile without ringing. Notify the dial-in number of the ringless call if you set to use, notify the dial-in number to ring the bell if you set not to use the silent ring, if there is no dial-in number setting The present invention solves the above-mentioned problem by providing an ISDN terminal adapter which is controlled by a built-in terminal adapter control circuit so as to notify a subscriber line number.

Here, a terminal adapter control circuit (hereinafter, also simply referred to as a control circuit) for controlling the transmission of the bell signal and the non-ringing signal and the transmission of the caller ID notification uses a microcomputer with a built-in terminal adapter. Controlled by software.

[0015] Further, it is common to use the at least two incoming groups as one group for G3 facsimile (corresponding to non-ringing incoming call) and the other group as an answering machine or a data modem (corresponding to bell incoming). It is a form.

[0016]

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

FIG. 1 is a circuit block diagram showing a configuration example of an ISDN terminal adapter according to the present invention, and FIG. 2 is a diagram showing an example of use of the ISDN terminal adapter according to the present invention.

As can be seen from FIGS. 2A and 2B, the ISDN terminal adapter 30 according to the present invention is an analog line terminal device connected to one analog port 10, for example, an answering machine 8 and a G3 fax 9 Is mainly assumed. Of course, a combination of analog line terminal equipment of at least two receiving groups such as a G3 fax and a data modem, or an analog telephone and a data modem may be used.

The subscriber line number (or dial-in number) XXX-X assigned to the answering machine 8
In the case of FIG. 2 (a) arriving at XX-XXX0, the bell signal B is transmitted from the analog port 10 so that both the answering machine 8 and the G3 fax 9 ring the bell, and are assigned to the G3 fax 9. (B) of FIG. 2 that has arrived at the dial-in number XXX-XXX-XXX1
In this case, the analog port 10 transmits a silent signal (1300 Hz) M to which only the G3 fax 9 responds.

Here, in the case of the above (a), the number of times the bell rings until the response (off-hook) when the G3 fax 9 receives the bell is set to a number greater than the number of times the bell rings until the answering machine 8 answers. It is important that the answering machine 8 responds first to the transmission of the bell signal B in which the bells of both the answering machine 8 and the G3 fax 9 ring.

On the other hand, by associating the G3 fax 9 with a non-ringing incoming call in advance, if a call arrives at the dial-in number assigned to the non-ringing incoming call (b), a no-ringing signal M is transmitted from the analog port 10. , G3 Fax 9
Answering only, answering machine 8 does not ring and does not respond.

Thus, it is possible to assign different numbers to both the answering machine 8 and the G3 fax 9 by using one analog port 10 and to selectively respond to them. Answering machine and G
Use equivalent to connecting and using 3 fax machines is realized. As a result, cost and mounting area corresponding to the analog port to be reduced can be reduced.

The above-mentioned ISDN terminal adapter 3
0 is the answering machine 8 connected to the analog port 10
Notification of the caller ID to the ISDN network 1 when making a call from an analog line terminal device such as
When the setting is made to use the non-ringing incoming call of the fax 9, the dial-in number (XXX-XXX-X) of the non-ringing incoming call is used.
XX1), a built-in control to notify the dial-in number of the bell ringing when the setting is made not to use the silent ringing call, and to notify the subscriber line number when the dial-in number is not set It is configured to be controlled by a circuit. This is a function for avoiding inconvenience caused by connecting a plurality of analog line terminal devices such as the G3 fax 9 and the answering machine 8 to one analog port 10.

That is, when a user subscribes to NTT's F-net service, when a non-delivery notification of a facsimile or the like is sent back by relying on a caller ID notification,
The call will be correctly received at the dial-in number of the G3 fax 9 without ringing.

Next, an example of a configuration for realizing the function of the analog port 10 of the ISDN terminal adapter 30 as described above will be described with reference to FIG.

In FIG. 1, the ISD connected to the S / T point of the terminal DSU 3 drawn from the ISDN network 1
The N terminal adapter 30 includes an S / T point interface circuit 11, a PCM codec 12, and a subscriber interface circuit 13 (4-wire to 2-wire conversion, line current supply,
Off-hook detection, etc.) and the first switch circuit SW
1, the second switch circuit SW2, and the analog port 1
0 are connected in a row, and are connected to the dial detection circuit 16, the bell signal generation circuit 17, the first off-hook detection circuit 18, and the second switch circuit SW2 connected to the first switch circuit SW1. The circuit includes a non-ringing incoming signal generation circuit 19, a second off-hook detection circuit 20, and a control circuit 21 (software control using a microcomputer) for controlling the circuit group.

The operation of each of the above circuits will be described in chronological order separately for the case where two numbers are received.

(1) Contractor line number XXX-XXX-
When a call arrives at XXX0.

(A) S / T point interface circuit 11
The control circuit 21 is notified that the called number is XXX-XXX-XXX0.

(B) The control circuit 21 sets SW1 to b and outputs a bell signal B from the analog port 10.

(C) After the bell of the answering machine 8 connected to the analog port 10 rings the number set by the answering machine, the telephone goes off-hook (responds).

(D) The first off-hook detecting circuit 18 detects the off-hook, and transmits the detected off-hook to the control circuit 21.

(E) The control circuit 21 returns SW1 to a and sets the analog port 10 to the subscriber interface circuit 13.
To connect to a call.

(F) The call ends and the analog port 10
The off-hook detection circuit of the subscriber interface circuit 13 detects that the answering machine 8 connected to the telephone has been on-hook, and notifies the control circuit 21 of it.

(G) The control circuit 21 sets the disconnection sequence to S
This is executed using the / T point interface circuit 11.

(2) Dial-in number XXX-XXX
-When a call arrives at XXX1.

(A) S / T point interface circuit 11
The control circuit 21 is notified that the called number is XXX-XXX-XXX1.

(B) The control circuit 21 sets SW2 to b and outputs a no-sound signal M (1300 Hz) from the analog port 10.

(C) Since it is the silent signal M dedicated to the G3 fax 9, the answering machine 8 connected to the analog port 10 does not ring and does not respond, while the G3 fax 9 goes off-hook and enters the fax receiving state. enter.

(D) In the second off-hook detection circuit 20, G
The off-hook of the 3 fax 9 is detected and transmitted to the control circuit 21.

(E) The control circuit 21 returns SW2 to a, connects the analog port to the subscriber interface circuit 13, and enters a fax communication state.

(F) The off-hook detection circuit of the subscriber interface circuit 13 detects that the fax communication has been completed and the G3 fax 9 connected to the analog port 10 has gone on-hook, and notifies the control circuit 21.

(G) The control circuit 21 sets the disconnection sequence to S
This is executed using the / T point interface circuit 11.

According to the above-described signal transmission control at the time of an incoming call, it is possible to selectively receive an incoming call through only one analog port 10 so that only one of the answering machine 8 and the G3 fax 9 responds according to the incoming number. .

Next, the operation of each circuit will be described in chronological order when a call is transmitted from an analog line terminal device such as the answering machine 8 or the G3 fax 9 connected to the analog port 10.

(A) The subscriber interface circuit 13 detects that the device connected to the analog port 10 has gone off-hook, and notifies the control circuit 21.

(B) A dial tone is transmitted from the control circuit 21 through the subscriber interface circuit 13.

(C) The equipment (answering machine 8 or G3) connected to the analog port 10 by the dial detection circuit 16
The dial signal sent from the fax 9) is detected and sent to the control circuit 21.

(D) After receiving the first digit dial signal, the control circuit 21 immediately stops transmitting the dial tone.

(E) When the control circuit 21 receives the dial signal and detects a timeout of the inter-digit timer (for example, set to 4 seconds), the S / T point interface circuit uses the dial number received so far as a destination number. Use 11 to make a call.

(F) The control circuit 21 determines whether or not the non-ringing incoming call function is turned on (setting). If the function is on, the dial-in number set for the non-ringing incoming call at the time of calling is set. Is the caller number, and when the call is off, the telephone number (subscriber number or dial-in number) set for ringing the bell at the time of the call is the caller number.

When the caller ID notification function of the ISDN terminal adapter 30 is set to ON by the control (f), the analog line terminal device connected to the analog port 10 (the answering machine 8 or G3 in the figure) When a call is sent from the fax 9), the above-mentioned silent ringing dial-in number (XXX-XXX-X) of the G3 fax 9 is used.
XX1) is notified to the other party as the caller number.

It should be noted that the two analog line terminal devices connected to the analog port 10 in the above embodiment are a G3 fax machine and an answering machine, but other analog circuit terminal devices may be used in combination. Often,
Also, it is needless to say that two or more analog line terminal devices may be divided into receiving groups.

[0054]

As described above, according to the present invention,
Since the SDN terminal adapter can connect at least two analog line terminal devices to one analog port and make each of them respond with an individual called number, the number of analog ports can be reduced as compared with the conventional one, and as a result, the ISD
An excellent effect of reducing the cost of the N terminal adapter and the circuit mounting area can be obtained.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram illustrating a configuration example of an ISDN terminal adapter according to the present invention.

FIG. 2 is a diagram illustrating an example of use of an ISDN terminal adapter according to the present invention.

FIG. 3 is a diagram showing an example of using an answering machine and a G3 fax connected to two analog ports of a conventional ISDN terminal adapter.

[Explanation of symbols]

 Reference Signs List 1 digital line network 3 DSU 4, 30 ISDN terminal adapter 5, 6, 10 analog port 8 answering machine 9 G3 fax 11 S / T point interface circuit 12 PCM codec 13 subscriber interface circuit 16 dial detection circuit 17 bell signal generation circuit 18 First off-hook detection circuit 19 Non-ringing incoming signal generation circuit 20 Second off-hook detection circuit 21 Terminal adapter control circuit M No-ringing signal B Bell signal SW1 First switch circuit SW2 Second switch circuit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Hasegawa 3-12-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Japan Inside (72) Inventor Harumi Kumasaka 3--12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Address Victor Company of Japan, Ltd. (72) Inventor Toshiaki Hojo 3-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Japan Victor Company of Japan

Claims (2)

[Claims] 1. An ISDN terminal adapter having an analog port for connecting and using an analog line terminal device, wherein:
A plurality of dial-in numbers or (b) a global incoming number and at least one dial-in number are assigned, and the plurality of numbers are divided into at least two incoming groups, and when one of the groups receives an incoming call, A ring signal is sent to the analog port by a built-in terminal adapter control circuit so that a bell signal is sent to the line terminal device, and a ringing signal is sent from the analog port to the analog line terminal device when an incoming call arrives at the other group. IS characterized by controlling
DN terminal adapter. 2. The ISDN terminal adapter according to claim 1, wherein the caller ID notification to the digital line network when making a call from the analog line terminal device connected to the analog port uses a facsimile non-ringing incoming call. When the setting is made, the dial-in number for silent ringing is notified, when the setting for not using silent ringing is made, the dial-in number for ringing is notified, and when the dial-in number is not set, the contract is made. An ISDN terminal adapter controlled by a built-in terminal adapter control circuit so as to notify a user line number.