JPH04320141A - Digital telephone terminal equipment - Google Patents

Abstract

PURPOSE:To easily and surely acquire a caller side telephone number reached during absence by extracting and storing the caller telephone number included in a setup message and displaying it visually. CONSTITUTION:An operating state setting means 11 sets the mode to an automatic answering state or a normal operating state and when the automatic answering state is set, an automatic answering telephone set recording means 12 records a caller telephone number. The telephone number is extracted from a caller setup message and all the extracted telephone numbers are recorded by the means 12. Moreover, caller telephone numbers during absence recorded by the means 12 are listed on a display means 13. Thus, the telephone numbers reached during absence are entirely and surely known without missing and a proper countermeasure is taken for all callers.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] This invention relates to a digital telephone terminal device, and in particular, it is possible to know the caller's telephone number at the time of an incoming call before answering the call, and to know the caller's telephone number. The present invention relates to a digital telephone terminal device capable of storage and visual display thereof.

0002

BACKGROUND OF THE INVENTION In recent years, many companies have adopted a so-called flextime system as a work system for employees, and employees' arrival and departure times have become more variable. For this reason, the person you wish to contact by telephone is often absent, making it difficult to contact them quickly. By the way, in the field of telephone circuit networks based on conventional analog technology, for example, it is possible to check later whether or not a telephone call has been made when a certain telephone subscriber is absent, without having to bother others. The only option was to add an answering machine function to the telephone I already had. However, even if such an answering machine function is added, the caller may not state his or her own telephone number, and the telephone subscriber receiving the call may have to look up the telephone number of the other party before contacting them. There were times when I had to do something. Even worse, the person on the other end might not be able to find out their phone number, making it impossible to contact them. In addition, recently, ISDN (Integrat
ed Services Digital Netwo
Although rk) networks and ISDN telephone terminal equipment have been developed and are capable of providing various additional services,
It is not possible to accurately deal with the situation described above. Regarding such conventional ISDN technology,
For example, various disclosures are made in "ISDN Picture Reading Book" by Yoshikazu Ikeda and two other authors: Ohmsha: First edition published October 1, 1988.

0003

[Problems to be Solved by the Invention] As mentioned above, there are technologies that add an answering machine function to conventional analog technology and
Depending on the services added to the SDN technology, there has been a problem in that it is extremely difficult or impossible to verify the telephone number of the other party who is calling.

[0004] The present invention was made to solve the above-mentioned problems, and it is possible to know the caller's telephone number at the time of the call setup request before responding to the caller's telephone number. The object of the present invention is to provide a digital telephone terminal device that is capable of storing and visually displaying the caller's telephone number.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, a digital telephone terminal device according to the present invention provides an operating state setting means (FIG. 1) for selectively setting an absent operating state or a normal operating state. 11), when a call setup request is received from a caller in the absent operation state set by the operation state setting means, the caller telephone number included in the call setup request message is sent to the call setup request message. An absent phone call recording means (1 in Figure 1)
2), and display means (13) for displaying the telephone number recorded in the absent telephone recording means.

[0006]

[Operation] The digital telephone terminal device according to the present invention can be set to either the absent operation state or the normal operation state by the operation setting means 11. The answering phone recording means 12 can record the telephone number of the caller when the digital telephone terminal device is set to the answering operation state. The telephone number is extracted from the SET UP message when the caller sends the SET UP message. This call setup request message has caller data M5 as shown in the format illustrated in FIG. 5, and this caller data M5 includes the caller's telephone number. For this purpose, the caller's telephone number can be extracted by analyzing the call setup request message based on its format. All of the extracted telephone numbers of callers are recorded by the absent telephone recording means 12. In this way, since the caller's telephone number is extracted from the call setup request message and recorded, it is possible to reliably capture all the telephone numbers of calls received while the caller is away. Further, the caller's telephone number recorded by the absentee call recording means 12 can be displayed as a list on the display means 13. Therefore,
By using the digital telephone terminal device of this invention,
To surely know the telephone number of a caller who called during one's absence, and to take appropriate contact measures for all callers contacted during one's absence.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic diagram showing a digital telephone terminal device as an embodiment of the present invention. In FIG. 1, an operating state setting means 11 is a type of state changeover switch, and can selectively set the digital telephone terminal to either an absent operating state or a normal operating state. The absent telephone recording means 12 consists of a suitable memory means such as an IC memory,
If a call setting request is received from a caller while the digital telephone terminal device is in the answering state set by the operating state setting means 11, the caller's telephone number included in the call setting request message at this time is It is extracted and recorded (memorized). The display means 13 is a display device made of a CRT, liquid crystal, etc., and displays the telephone numbers recorded in the absent telephone recording means 12 in a list-like format. The automatic dialing means 14 automatically issues a dialing instruction to the other party (caller side) of the telephone number recorded in the answering phone recording means 12, for example, in the order of oldest records. be. The line control means 15 is provided between the absentee call recording means 12 and an external line (not shown), and the automatic calling means 14
Under the control of the network, connection operations with external lines, etc. are controlled.

FIG. 2 is a block diagram showing in more detail the digital telephone terminal device 9 of the above embodiment. In FIG. 2, a CPU 1 is composed of, for example, a suitable microprocessor, and performs protocol processing and other central functions necessary to perform the functions of the digital telephone terminal device 9. As the memory 2, a suitable means such as an IC memory is used, and the digital telephone terminal device 9
In addition to the various programs necessary to perform the functions, the telephone number used for making a call and the name of the corresponding destination are recorded (memorized). This memory 2 corresponds to the absent telephone recording means 12 in FIG. A keyboard device is preferably used as the input means 3, and the required functions such as dialing operations during a call and recording operations in the memory 2 can be performed using the numeric keypad and various function keys mounted on this device. fulfilled. The key identification circuit 3A is provided between the CPU 1 and the input means 3, and contributes to the operation of the CPU 1 by determining the type of key pressed by the caller, and is actually included in the CPU 1. It may be something that can be used. The specific key of the input means 3 and the key identification circuit 3A correspond to the operating state setting means 11 in FIG. As the display 4, a CRT, liquid crystal, or other suitable display means is used, and for example, the contents of the memory 2 can be appropriately displayed according to instructions from the caller, or the digital telephone terminal device 9 can be used to For example, it provides the caller with necessary sequential operation instructions regarding the function. The display control circuit 4A is provided between the display 4 and the CPU 1.
A required display operation is performed on the display 4 via the PU1. The display 4 and display control circuit 4A here correspond to the display means 13 in FIG. The automatic dialing circuit 5 operates to automatically dial the telephone numbers recorded in the memory 2, for example, in the order of oldest records. The ISDN plug 6 is for connecting the digital telephone terminal device 9 to an external ISDN network, and is connected to the CPU 1 via a suitable line control circuit 6A. The speaker 7 is used to amplify the content of the call, and is connected to the CPU 1 via a required audio generating circuit 7A. The handset 8 is used for telephone calls by the user of the digital telephone terminal device 9, and is connected to the CPU 1 via a suitable CODEC (coding/decoding circuit) 8A. The digital telephone terminal device 9 is constituted by these various means. Here, I would like to touch on the relationship with Figure 1 again.
The operating state setting means 11 corresponds to, for example, a certain key in the input means 3 and the key identification circuit 3A. In FIG. 2, the absent telephone recording means 12 has a program stored in the memory 2 for extracting the caller's telephone number included in the call setting request message.
This program is executed by the CPU 1 and the extracted telephone number of the caller is stored in the memory 2. The display means 13 has the function of displaying required information, and corresponds to the display 4 and the display control circuit 4A as its control section. The actual operation of either means is controlled by the CPU 1.

FIG. 3 is a timing diagram for explaining the operation of the above embodiment. In this FIG. 3, #1 digital telephone terminal equipment (TE1) 9A is equipment on the caller's side, and #2 digital telephone terminal equipment (TE2) 9B is equipment on the called party's side. They are connected to each other via an ISDN network 20. Now, the handset 8 is connected to the #1 digital telephone terminal (TE1) 9A on the caller side.
When dialing is performed by going off-hook and pressing down the numeric keypad on the keyboard as the input means 3 (21), a SET UP (request for call setup) T1 is made to the ISDN network 20, and in response, a call is made via the ISDN network 20. #2 digital telephone terminal device (T
E2) SET UP T2 is transmitted to 9B, and the caller's telephone number is identified on the called party's side and stored in memory 2, but the ISDN network 20 sends a CALL to the caller. PROC (notification that call setup is in progress) T3 is returned. Next, the called party issues an ALERT T4 (notification that the called party is being called), a ring tone 22 is generated on the called party, and an ALERT T5 is sent via the ISDN network 20. is returned as . Then, on the caller side, a predetermined ringing tone 23 is generated, and the caller side can identify that the called party is being called. Following this, when off-hook 24 is performed by an appropriate person on the called party's side, CONN (notification that there was a response (off-hook) on the called party's side) is sent from the called party's T6 to the ISDN network 20.
CONN AC from the ISDN network 20 side.
K (confirmation for CONN) T8 is returned and is also transmitted to the caller side as CONN T7 via this ISDN network 20. Then, CONN from the caller side.
ACK T9 is issued to the ISDN network 20, a call state 25 is entered between the two parties, and in response, a charging operation for billing the call fee is started.

FIG. 4 is a flowchart for explaining the operation of the above embodiment, and FIG. 5 is an exemplary diagram of the setup (SET UP) message format applied in the above embodiment, ie, FIG. 3 is a diagram illustrating a message for a setting request. First, in FIG. 5, the protocol identifier M1, the octet length of the call number M
2. Call number M3, message type M4, caller data M
5. Callee data M6, etc. are shown in octets (8 bits). A setup message in this format is SET UP T in FIG.
1 and SET UPT2 operations. The caller data M5 of this setup message includes the caller's telephone number information, and therefore it is possible to obtain and record the caller's telephone number information at the stage of requesting call setup. It becomes possible.

Next, referring to FIG. 4, the operation is started by turning on the power, for example (S401), and then an appropriate function key such as a certain key on the keyboard as the input means 3 is pressed. As a result, the answering machine function is started (S402). In the subsequent step S403, it is determined whether or not the answering machine function has been canceled. If the release operation has not been performed yet (ie, NO), it is subsequently determined whether or not a SET UP message has been received (S404). If the result of this determination is NO, the previous step S403
Return to On the other hand, if the result of the determination in step S404 is YES, SET UP
After storing the caller's telephone number included in the message in the memory 2, the process returns to step S403.

On the other hand, if the answering machine function is canceled in step S403 (that is, YES), the process moves to step S406, where it is determined whether or not the telephone number stored in the memory 2 exists. It will be judged. If the result of this determination is NO, normal telephone functions are performed. However, when the result of the determination in step S406 is YES, the telephone numbers stored in the memory 2 are displayed as a list on the display screen of the display 4 (S407). In this case, the method of scrolling display can be selected depending on the width of the display screen and the size of displayed characters and numbers. Following step S40
At 8, a decision is made whether to select an automatic function for dialing. If the selection decision is made here (that is, YES), step S41
4, the automatic dialing circuit 5 in the digital telephone terminal device 9 automatically calls the telephone number that received the first call among the telephone numbers stored in the memory 2 (i.e., the oldest telephone number). Dial operation is performed. Next, a conversation is made with the other party (S415), the handset 8 is turned on-hook (S416), and then it is determined whether or not the telephone number is still stored in the memory 2 (S415).
S417). If the result of this determination is NO, normal telephone functions will be performed. On the contrary,
If the result of the determination in step S417 is YES, the process returns to step S414 to continue processing for the remaining telephone numbers.

[0013] In the previous step S408, if the automatic function for dial operation was not determined (that is, NO), the subsequent step S4
09, an appropriate telephone number is artificially selected from among the telephone numbers stored in the memory 2. Then, manual (i.e., manual) dial operation execution (S
410), a conversation with the other party (S411), and the on-hook of the handset 8 (S412) are performed in sequence, and then it is determined whether there are still telephone numbers that require a conversation (S413). If the result of this determination is NO, normal telephone functions are performed. On the other hand, if the result of the determination in step S413 is YES, the process returns to step S409 and the necessary manual operations for the remaining telephone numbers are continued.

[0014]

[Effects of the Invention] As explained above, the digital telephone terminal device according to the present invention can detect the caller's telephone number contained in a call setup request (SET UP) message, which is information for a call setup request. Since it is extracted and stored, it is possible to easily and reliably capture the telephone number of the caller who called while the user was away. Furthermore, since the telephone number of the caller can be visually displayed, it is possible to easily contact the caller by telephone. Furthermore, since the above-mentioned acquisition of the caller's telephone number is performed before the called party performs an off-hook operation, there is no need to pay telephone charges at the stage of acquiring the telephone number.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram showing a digital telephone terminal device as an embodiment of the present invention.

FIG. 2 is a block diagram showing in more detail the digital telephone terminal device of the above embodiment.

FIG. 3 is a timing chart for explaining the operation of the above embodiment.

FIG. 4 is a flowchart for explaining the operation of the above embodiment.

FIG. 5 is an exemplary diagram of a setup message format applied to the above embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1...CPU, 2...Memory means, 3...Input means, 3A...Key identification circuit, 4...Display means, 4A...Display control circuit, 5...Automatic transmission Circuit means, 6... ISDN plug, 6A... line control circuit, 7... speaker, 7A... audio generation circuit, 8.
...Handset, 8A...CODEC (encoding/decoding means), 9...Digital telephone terminal device.

Claims (1)

[Claims] 1. An operation state setting means for selectively setting an absent operation state or a normal operation state; and a call setup request from a caller in the absence operation state set by the operation state setting means. and an answering phone recording means for extracting and recording the caller's telephone number included in the call setting request message; and a display for displaying the telephone number recorded in the answering phone recording means. A digital telephone terminal device comprising: means.