JP2000041115A - Incoming call control method for isdn terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize the incoming call control method for an ISDN terminal to which a dial-in function is set to receive a call of an opposite party at all times on occurrence of a power failure. SOLUTION: A dial-in function is set to a terminal adaptor 20 of an ISDN terminal. When a CPU 16 detects a power failure of a home use commercial power supply (a), stops a PHS section 11 (b), and closes a switch S1 of a power supply section 12 to select a backup by a battery 7. In the case that a setup message is sent from a network in the battery backup state for a power failure (c), the CPU 16 sets a condition of a line exchange section 14 so that calls come to a telephone set 4 connecting with an analog port 8 by neglecting its incoming call number and an incoming sub-address. When power restoration is detected (d), the CPU 16 references the dial-in setting of the analog port 8 and the global incoming call setting of a PHS slave set 9 to restore the conventional condition setting for incoming call discrimination (e), and the switch S1 of the power supply section 11 is turned off to start the PHS section 11 (f) in this incoming call control method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN line (In
DSU (Digital Servic) integrated services Digital Network (for example, INS network 64 provided by NTT)
e Unit: Digital line connection device)
More specifically, the present invention relates to an incoming call control method for an SDN terminal device, in which an ISDN terminal device to which a dial-in function is set does not receive an incoming call to a terminal whose operation by a backup power supply is stopped during a power failure.
The present invention relates to an incoming call control method for a terminal device.

[0002]

2. Description of the Related Art Conventionally, an INS64 line provided by NTT, which is an ISDN basic interface, allows two telephone conversations simultaneously on one line. For this reason, ISDN
Terminal devices often use the dial-in function, and at present, most ISDN terminal devices support the dial-in function.

When this dial-in function is used, a plurality of different terminals connected to the same line are designated by dial-in numbers (subscriber line number and dial-in additional number),
You can receive a call.

For example, as shown in FIG. 6, two dial-in numbers, a telephone number A and a telephone number B, are set in a terminal adapter 3 connected to an INS64 line 1 via a DSU 2, and a call is received with the number A. In such a case, when the call is received by the telephone number 4 or B, the G3 fax 5 is generally used.

[0005] By the way, most of the ISDN terminal devices such as the terminal adapter 3 operate by using a home power supply. When a power outage occurs, the ISDN terminal device is operated by backing up with a built-in battery, or power is supplied from a line. The operation of the ISDN terminal device is greatly restricted because the backup power supply from the battery or line is small.

For example, as shown in FIG. 7, the PHS master 6 for the ISDN line operates only the G3 fax 5 (telephone number B) connected to the analog port 8 by the backup battery 7 at the time of power failure. I have. FIG.
In the example, only the digital telephone 10 (telephone number B) operated by power supply from the INS64 line operates, and the telephone 4 (telephone number A) connected to the analog port of the terminal adapter 3 stops operating.

[0007] As described above, the terminals that operate in the event of a power failure are usually limited.

[0008]

For example, in FIG.
If a dial-in function is set and used as the telephone number A (global incoming) to the S slave unit 9 and the telephone number B of the G3 fax 5 connected to the analog port 8, when a power failure occurs, the telephone number B Even if you can only receive incoming calls, even if the other party calls the phone number A, PHS
This is inconvenient because the incoming call does not reach the handset 9.

In the example of FIG. 8, the telephone number A of the telephone 4 connected to the terminal adapter 3 and the digital telephone 10
In the case of the telephone number B, the telephone 4 cannot be used in the same manner, so that if a telephone number A calls the other party at the time of a power outage, the telephone number 4 cannot be received.

[0010] The present invention has been made in view of the above circumstances, and when the number of terminals that are backed up by battery or power supply from a line during the power outage of an ISDN terminal device is limited, all the operating terminals are limited. The above problem is solved by switching the incoming operation of the terminal so as to receive the incoming call (for example, the above-mentioned telephone numbers A and B).

[0011]

According to the present invention, there are provided: (1) different telephone numbers A and B which are connected to an ISDN line (for example, INS64 line 1 of NTT) and are assigned so that a plurality of terminals individually receive a call; ISDN terminal equipment (for example, ISD
In the incoming terminal control method of the N terminal adapter 20),
When a household commercial power supply (for example, AC100V) fails, only a part of the terminal (for example, the telephone 4) is operated by the backup power supply (for example, the backup battery 7), and the terminal (for example, the PHS) is stopped by the operating terminal. ISDN characterized in that the incoming call processing of the terminal is switched so that the incoming call of the telephone number A of the slave unit 9) of the unit 11 is also received.
Terminal equipment (for example, the ISDN terminal adapter 2
The above problem is solved by providing the incoming call control method of 0).

(2) In addition, a household commercial power supply (for example, AC
100V), when a power failure occurs, only a part of the terminal (for example, the telephone 4) is operated by the backup power supply (for example, the backup battery 7), and the telephone of the terminal (for example, the PHS unit 11) which is not operated by the operating terminal is operated. Number A
In order to also receive the incoming call, the call setting message sent from the network at the time of the incoming call ignores the called number information element and the called sub address information element and the call is received. The ISDN terminal device (for example, the terminal adapter 20) according to (1), wherein the incoming call process is returned so as to perform the incoming call determination based on the subaddress information element, and the terminal (the PHS unit 11) whose operation is stopped is started. The above problem is solved by providing the incoming call control method of (1).

Here, the ISDN terminal device is the ISDN terminal adapter 20 described above or the ISDN terminal device shown in the conventional example.
The terminal is the PHS master unit 6 for the DN line, and the terminal is the digital telephone 10, the analog telephone 4 connected to the analog port of the ISDN terminal device, the G3 fax 5, or the like.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an ISD for performing incoming call control according to the present invention.
FIG. 2 is a block diagram of an ISDN terminal adapter as an N terminal device, and FIG. 2 is a flowchart showing a processing procedure at the time of a power failure and at the time of power recovery of the incoming call control according to the present invention. Also,
FIG. 3 is a flowchart showing a procedure for processing a call setup message sent from the network at the time of an incoming call, FIG. 4 is a view showing an example of a call setup message, and FIG. 5 is an example showing a structure of the message. is there. Note that components common to those of the related art are denoted by the same reference numerals.

In the configuration example of FIG. 1, in the ISDN terminal adapter 20, the dial-in function is set by setting the dial-in number A to the PHS slave 9 and the dial-in number B
Is assigned to the telephone 4 of the analog port 8. When the household commercial power supply AC100V loses power, the switch S1
Is turned on to start a backup operation using the built-in backup battery 7, and the supply of power to the PHS unit 11 is stopped in order to reduce power consumption. Therefore, during a power failure, outgoing and incoming calls can be made only from the telephone 4 connected to the analog port 8.

Next, in the flow chart of FIG. 2, (a) when a power failure of the commercial power supply for home is detected, (b) the PHS unit 11 is stopped and the switch S1 of the power supply unit 12 is turned on to switch to battery backup. . (C) If a call setup message is sent from the network in the battery backup state at the time of the power failure, the line is set so that the call is received by the telephone 4 connected to the analog port 8 ignoring the called number and called sub-address. The condition setting of the exchange unit 14 is performed by the CPU 16.
(D) Upon detecting that the power has been restored, (e) the CPU 16 returns to the normal condition setting for determining the incoming call by referring to the dial-in setting of the analog port 8 and the global incoming call setting of the PHS slave unit 9, and (f). The switch S1 of the power supply unit 12 is turned off.
F to activate the PHS unit 11.

As described above, the processing of the circuit switching unit 14 is performed by the CPU 12 so that the incoming call to the telephone number A, which should normally arrive at the PHS slave 9 in FIG. In this embodiment, the incoming call discrimination is performed by ignoring the called number information element and the called sub address information element in the call setting message sent from the network of the INS64 line 1 at the time of the incoming call used as the information of the incoming call discrimination. It is.

That is, usually, the CPU 16 determines which telephone number has arrived and which sub-address number has arrived by referring to the called number information element and the called sub-address, and determines the terminal ( Telephone 4 or PHS slave 9).

FIG. 3, FIG. 4 and FIG.
The procedure for processing a call setup message sent from the network of four lines 1 and the contents of the call setup message are as follows.
In this embodiment, the transmission capability information element is voice or 3.1K.
In the case of Hz audio, the incoming call is analog (voice, G3 facsimile, data modem), so the call is received.

In the above embodiment, the analog port 8
Is backed up, but the control method of the present invention is effective if the terminal is backed up in addition to the above (such as a digital telephone or the like where the terminal itself is backed up by line power supply).

[0022] Further, instead of receiving all calls at the time of a power failure, a method of having a plurality of dial-in settings for a power failure and receiving a call with a plurality of specific dial-in numbers is also possible. Of course.

Further, the user can set ON / OFF of this function and select it. (Avoid problems when the terminal to be backed up is a dedicated G3 fax machine and does not operate as a telephone.) In the example of this embodiment, analog calls such as voice are described, but there is no limitation. It is also applicable to digital calls.

According to the above-described incoming call control method for ISDN terminal equipment, the incoming call of the dial-in number of the terminal which has not been backed up at the time of the power failure can be received by another terminal, and the other party cannot contact in the event of a power failure. Inconvenience is avoided.

As a reminder, in a conventional ISDN terminal device such as an ISDN terminal adapter, no consideration is given to incoming calls except for backing up a battery at the time of a power failure. There was no idea of dealing with the trouble at the time of a power failure by switching the incoming call control.

[0026]

The incoming call control method for ISDN terminal equipment according to the present invention provides a dial-in function for which a dial-in telephone number is received by a terminal which does not operate at the time of a power failure. There is an excellent effect that you can receive.

[Brief description of the drawings]

FIG. 1 is a block diagram of an ISDN terminal adapter as an ISDN terminal device that performs incoming call control according to the present invention.

FIG. 2 is a flowchart showing a processing procedure at the time of a power failure and at the time of power recovery in incoming call control according to the present invention.

FIG. 3 is a flowchart showing a procedure for processing a call setup message sent from a network at the time of an incoming call in the incoming call control method for an ISDN terminal device according to the present invention.

FIG. 4 is a diagram showing an example of a call setup message according to the present invention.

FIG. 5 is an example showing a configuration of message coding according to the present invention.

FIG. 6 is a block diagram illustrating a dial-in function of a terminal connected to a terminal adapter as a conventional ISDN terminal device.

FIG. 7 is a block diagram illustrating a dial-in function of a PHS parent device and a child device for an ISDN line as a conventional ISDN terminal device.

FIG. 8 is a block diagram illustrating a dial-in function of a terminal adapter and a digital telephone as a conventional ISDN terminal device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 INS64 line 2 DSU 3 Terminal adapter 4 Analog telephone 5 G3 fax 6 PHS base unit for ISDN line 7 Backup battery 8 Analog port 9 PHS slave unit 10 Digital telephone 12 Power supply unit 14 Line exchange unit 16 CPU 20 ISDN terminal adapter

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 3/58 105 H04L 11/02 Z 5K101 F term (Reference) 5K030 GA18 HC05 JA03 KA23 LD11 LD14 MD04 5K037 AA10 AB01 AB07 CA01 CB03 5K049 AA09 BB02 CC07 CC13 CC15 EE04 FF02 FF12 FF32 FF52 5K051 AA01 BB01 CC04 DD04 HH18 5K067 AA25 AA26 BB02 DD13 FF07 GG11 HH05 HH13 HH23 KK05 KK15 NN15K04 NN15

Claims (2)

[Claims] 1. An incoming call control method for an ISDN terminal device which is connected to an ISDN line and has a dial-in function in which a plurality of terminals are assigned different telephone numbers so as to individually receive an incoming call. In the event of a power outage,
An ISDN terminal device characterized in that, while only a part of terminals are operated by a backup power source, the incoming process of the terminal is switched so that the operating terminal also receives an incoming call of the telephone number of the terminal whose operation has been stopped. Incoming call control method. 2. When a commercial power supply for home use is interrupted, only a part of the terminals is operated by the backup power supply, and the operating terminal receives an incoming call of the telephone number of the terminal that is not operating. In some cases, the incoming call is ignored by ignoring the called number information element and the called sub address information element in the call setting message sent from the network, and when power is restored, the incoming call is determined based on the called number information element and the called sub address information element. 2. The method according to claim 1, further comprising: returning the incoming call processing to the terminal and activating the terminal whose operation has been stopped.