JPH01303895A - Data number identification system - Google Patents

Abstract

PURPOSE:To allow a caller to control and utilize an opposite device independently of type of dial of a telephone set by handling a pushphone signal not as a conventional selection signal for line connection simply from a caller to a called party but as a control signal. CONSTITUTION:The caller can calls an extension telephone set of an automatic private branch exchange (PABX) by having only to dial a usual telephone number. In this case, since a selection number from a station exchange to the PABX is sent as a pushphone (DTMF) signal even if the caller uses a rotary dial telephone set, the terminal PABX recognizes the DTMF signal as a control signal of end-to-end and uses it. Thus, even the rotary dial telephone set can easily control the opposite device.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a system in which, in a PABX (automatic private branch exchange) dial-in service, part or all of the subscriber telephone number is sent to the PABX side as a DTMF signal (touch-tone telephone signal). Focusing on the data (
The goal is to control the other party's (terminal) device by using it as information.

When transmitting end-to-end information using a communication line, if the communication path (line) is connected and the amount of information is small, a telephone is usually used as a method that does not require an expensive modem. Control information is transmitted using the DTMF signal used for line selection in, for example.

The purpose of the present invention is to simply handle this DTMF signal from the calling side to the receiving side (connecting the dots) as a series of data (control signals) rather than as a selection signal for line connection. be.

Therefore, even if the caller uses a rotary dial telephone (DP double signal), control information is transmitted to the receiving (other party) device using a communication line without using any special equipment or being aware of it. Telephone dial type (DP or D
It is possible to control and use the other party's device regardless of TMF).

For a concrete explanation, dial-in of PABX will be described. Conventionally, methods for receiving calls to a PABX extension include via answering equipment such as a relay stand, as well as direct methods such as an individual call receiving method, an additional number method, and a dial-in service method.

This dial-in service method receives calls from the telephone exchange (central office exchange) without going through answering equipment such as a relay stand.
This is a function that allows you to directly call an extension phone, and the method of assigning a number to each extension phone of the PABX is the same as a general subscriber phone number (number of digits).
Granted. From the phone number, it is a general subscription phone or PA
I can't tell if it's a BX extension.

Therefore, PABX receiving dial-in service
When a call arrives at an extension telephone, the central office exchange sends to the PABX a subscription number of a predetermined number of digits from the number dialed by the caller. In this case, part or all of the subscriber phone number becomes the designated extension number of the PABX, so depending on the scale of the PABX, the last 1 digit of the subscriber phone number
Any number of digits can be selected, and a DTMF signal is sent from the central office exchange to the PABX as an extension designation number selection signal. The PABX side receives the DTMF signal and connects it to the corresponding extension telephone.

FIG. 1 shows the basic configuration of a PABX dial-in service.

Callers simply dial a regular phone number and receive PAB
You can call X's extension phone. In this case, even if the caller is a rotary dial telephone, the selected number from the central office exchange to the PABX is sent as a DTMF signal, so the terminal (P A B
By recognizing and using the MF signal as an end-to-end control signal, it is possible to easily control the other party's device even from a rotary dial telephone.

For convenience of explanation, the principle and specific configuration of the present invention will be described with respect to the case where voice mail is used, which is one example of the use of the present invention.

Figure 2 shows how to connect to voicemail.

A voice mail (VMX) device is numerically positioned as a terminal device, and the user calls the VMX device by dialing the corresponding telephone number, and then sends a control signal unrelated to the telephone number. The VMX side is controlled by dialing a predetermined number. In this case, since it is after connection, a DTMF signal is used as a control signal, so if the caller is using a rotary dial telephone,
Since end-to-end information (DTMF signals) cannot be transmitted, it cannot be used as is.

Therefore, as an embodiment of the present invention, a 7MX device is used as a PAB
By placing it on the PABX ladder during X dial-in service, the selection number (DTMF signal sent from the central office exchange) for connecting to the PABX extension telephone can be directly transmitted to the V
By connecting it to an MX device, it is possible to receive a 4-digit DTMF signal. 7MX of this 4-digit DTMF signal
The device receives it as end-to-end information (data) after connection.

In this example, by recognizing the message from the 7MX device as the box number that stores it, the received D
A message is stored in a box corresponding to the TMF signal number and sent to the originating side.

After being connected to a 7MX device, the 7MX device can only be controlled by DTMF signals.

In this way, the caller simply dials a predetermined telephone number (with the same number of digits as a regular subscriber telephone), without having to be aware of end-to-end control signals or the type of telephone (in the case of DP). You can hear the messages you need.

In addition, when using the PABX dial-in service in this way, if a device that receives, distributes, and controls DTMF signals is installed on the PABX ladder, it is possible to distribute and control a part of the telephone number instead of simply using it as a selection signal. It can be used as a signal.

As a specific example, tenants can be divided by a number of digits, or if an answering machine is installed in a terminal, some of the numbers can be used for control signals after connection. For example, if the first three digits are used to connect to an answering machine, and the fourth digit is 1, it can be identified as a recording control signal, and if the fourth digit is a 2, it can be identified as a playback control signal, so the caller can use rotary dialing. It can be easily used even from a telephone.

The present invention is to identify a DTMF signal used in a PABX dial-in service not simply as a selection number but as a data number.

In FIG. 2, (1) is a connection system diagram when the 7MX device is normally used. Upon connection, the central office exchange connects an incoming call to the subscriber line corresponding to the general telephone number dialed by the originating telephone.

Since the 7MX device is installed as a terminal device for subscriber lines, it normally responds automatically when an incoming call is connected, and subsequent control is performed using a DTMF signal as an end-to-end control signal, separate from the selection signal. to achieve the functionality of the 7MX device.

(2) is a connection system diagram when a 7MX device is installed on a PABX ladder in a PABX dial-in service, which is one of the specific examples of the present invention. , PA within the general phone number
The extension selection number required by the BX dial-in service is sent as a DTMF signal. In this case, the 7MX device installed on the same ladder as the PABX for dial-in service has the function of receiving the D'TMF signal from the central office exchange, but it also has the function of controlling the connection and disconnection of the dial-in line. The connection signal sent from the central office exchange cannot be received, so the dial-in line is connected directly to VMX.
A dial-in connection monitoring device in front of the device without being directly connected to it! (DISE) will be provided.

The main function of DISE (incoming call example) is to start operation by a start signal, which is one of the connection signals sent from the central office exchange (VMX equipment side is also started), and to monitor the sent DTMF signal. The system checks whether the dialed number (index) is incorrect (or not) and sends the primary response signal, DTMF signal reception completion signal, secondary response signal, etc. to the central office exchange.During the call, the DC signal continues to be monitored and the DC loop The DISE has the function of controlling all the connection signals to the central office exchange of the PABχ dial-in service.For this reason, the 7MX device installed in the terminal handles the signals on the connection by the dial-in service. It is possible to receive the DTMF signal sent from the central office exchange as end-to-end information without having to worry about sending and receiving it.

[Brief explanation of the drawing]

FIG. 1 is a connection system diagram of the PABX dial-in service. SUB in the figure -------1 originating telephone E XT ------P A B X extension telephone Cl0
EX -・・−・−Telephone office exchange PABX ・−・・
・Automatic local exchange DIDL ・---PABX dial-in circuit diagram 2 shows (1) connection system diagram when VMX equipment is normally used, (2) connection system diagram when VMX equipment is used with PABX dial-in service. An example of installation on a PABX staircase is shown. SUB -m-～...-・Calling telephone VMX...
・−・Voice mail device Cl0EX ・−・・・・
Telephone office exchange DIDL --- PABX dial-in line DISE --- Dial-in connection monitoring device L --- --- Subscriber line patent issued 1t
j1 representative, 4 people

Claims (1)

[Claims] When performing end-to-end control using a telephone line, normally the other party's device is controlled by sending the necessary information (data) to the other party using a touch-tone telephone (DTMF) signal after connection. In the case of a rotary dial telephone, information cannot be sent after connection, so services that require control cannot be used. Therefore, as a means to obtain a DTMF signal, a DTM signal is sent to the PABX side for extension number selection from the exchange at the central telephone office, which is provided by the automatic private branch exchange (PABX) dial-in service method.
By receiving part or all of the F signal as data, the control of the terminal device can also be used with a rotary dial telephone. Therefore, by using the PABX dial-in service without making any particular changes to the existing public line network, even if the calling subscriber has a rotary dial telephone, the subscription number part of the selection signal can be received and used as data. For example, the selection number sent from the central office exchange to the PABX is always a DTMF signal, so a terminal device placed on the same ladder as the PABX can easily obtain control data as a DTMF signal. Number identification method.