JP3123569B2 - Communication terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication terminal such as a telephone or a facsimile machine which is used by connecting to a communication network capable of transmitting and receiving a destination subaddress at the time of calling and receiving.

[0002]

2. Description of the Related Art ISDN (Integrated Services Digital Neural Network)
twork: Integrated Services Digital Network), the terminal type can be selected according to the high-layer compatibility, which is one of the information elements defined in the CCITT (International Telecommunication and Telephone Consultative Committee) I series recommendations, and the same depending on the destination subaddress A specific terminal can be selected from the terminal types. Further, the destination subaddress can be used for selecting information limited to individuals or groups, such as selection of functions possessed by the terminal.

[0003] This solves the inconvenience that the selection of terminals and functions, as seen in the existing analog telephone network, can only be made after a communication path is formed, and these selections are made before calling up the communication path. Sometimes I can do it. In communication terminals that select terminals and select information within individuals and groups as described above, IA5 characters and the like recommended by the telecommunications carrier are used as the subaddress type code, which is a function of the destination subaddress. The NSAP format is widely used.

[0004]

As described above, according to the conventional communication terminal, not only a specific terminal from the same terminal type is selected by a destination subaddress at the time of calling before forming a communication path, but also a terminal. If you also want to select information within individuals or groups, such as selecting functions held by
Such information within individuals and groups is inherently highly confidential and should be information between specific persons. However, when the NSAP format is used as the subaddress type code, the NSAP format itself is widely used. The disadvantage is that it is not suitable for handling highly confidential information. Also,
When selecting a specific terminal from the same terminal type and selecting information in an individual or group, such as selection of functions possessed by the terminal, conflicts between highly public information and highly confidential information There is a drawback that information of the nature to be mixed is mixed.

[0005] The problem to be solved by the present invention is to handle highly open information such as selecting a specific terminal from the same terminal type by properly using the subaddress type code in the NSAP format and the user-specific subaddress format. It is an object of the present invention to provide a communication terminal that can be used by clearly separating the case and the case of handling highly confidential information such as selection of information in an individual or a group such as selection of functions possessed by the terminal. .

[0006]

According to the present invention, in order to solve the above-mentioned problems, in a communication terminal according to the first aspect of the present invention, as shown in the claim correspondence diagram of FIG. A communication terminal function list recording unit 60 to be stored, a destination sub-address detection unit 20 for detecting a destination sub-address from the incoming signal received by the incoming signal receiving unit 10, a type code selecting unit 30 for detecting a sub-address type code from the destination sub-address, An information code detector 40 for detecting a sub-address information code from the destination sub-address; and a sub-address type code detected by the type code selector 30 if the sub-address type code is in a user-specific sub-address format. Sub address information code and the communication terminal function list recording unit 6
And a matching unit 70 for matching the stored contents of “0” and selecting an appropriate possessed function based on the matching result.

Further, in the communication terminal according to the second aspect, as shown in the claim correspondence diagram of FIG. 2, a type code designating section 110 for setting a sub-address type code.
And a type code selecting unit 30 for selecting the sub-address type code.

[0008]

According to the above arrangement, when the caller selects a specific function from the functions possessed by the communication terminal of the other party to receive a call, the caller sends the call with the destination subaddress attached. At this time, a user-specific sub-address format is selected as a sub-address type code, which is one of the functions of the destination sub-address, and the sub-address information code extracts a target from a terminal function name or a number indicating a function stored in advance.

The called communication terminal on the called side receives the called subaddress. When the sub-address type code is detected from the destination sub-address and it is determined that the user-specific sub-address format is used, the received sub-address information code is compared with a preset list of functions of the terminal, and Select the function to perform.

[0010] With this, the caller can select and call a specific function at the time of calling even if the other communication terminal has various functions, so that no extra communication time is required for selecting the function. Will be done. In addition, since the called party can use the NSAP format and the user-specific sub-address format together as the sub-address type code, it is very common to handle highly open information such as selecting a specific terminal from the same terminal type. It is possible to achieve both the usage of the destination subaddress and the usage of the destination subaddress handling highly confidential information such as selection of information within an individual or a group, such as selection of a function possessed by the terminal.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a communication terminal according to the present invention will be described below in detail with reference to the drawings. The embodiment shown in FIG. 3 is capable of providing a service for notifying the destination subaddress.
It is a configuration example when applied to a communication terminal connected to a communication network such as an ISDN network.

The communication terminal includes a CPU 1 for executing a control program according to this embodiment, a system bus 2 of the CPU 1 including a data bus, an address bus, a control bus, and the like.
A ROM 3 storing a control program according to the present embodiment;
A RAM 4 for storing the destination sub-address received at the time of the incoming call;
RAM 41 for storing subaddress type codes in NSAP format and user-specific subaddress format, RAM 42 for recording a list of functions possessed by the communication terminal, operation unit 5 for inputting a list of functions possessed by the communication terminal, RAM 42
A display unit 6 for displaying a list of functions possessed by the communication terminal stored in the communication terminal; a calling unit 7 for notifying a call such as generation of a ringing tone; a communication path 90;
It comprises a network interface unit 100 with an ISDN network.

The ISDN network has a D channel, which is a signal channel for transmitting and receiving call control information such as a call setup message and a response message at the time of outgoing and incoming calls, and two information channels for transmitting information between terminals. The B1 channel and the B2 channel are provided to the communication terminal. The call setup message is composed of various information elements such as a calling party number, which is the subscriber number of the caller, a called party number, which is the subscriber number of the called party, and a called subaddress indicating the number of the called terminal.

The destination subaddress is configured as shown in the code table of FIG. 7 defined in the CCITT I series recommendation. That is, in octet 1, a code indicating the destination subaddress is described as an information element identifier. Also, octet 2 contains the number of octets, which is the content length of the destination subaddress,
The fifth, sixth, and seventh bits of octet 3 describe the sub-address type, and octet 4 and following describe the contents of the sub-address information.

The NSAP format sub-address type code and the user-specific sub-address format sub-address type code stored in the RAM 41 are the same as those shown in FIG.
Are "000" and "010", respectively, corresponding to the fifth, sixth and seventh bits of octet 3 of the code table of the destination sub-address defined in the I series recommendation. The network interface unit 100 shown in FIG. 3 separates and combines the D channel, which is a signal channel provided by the ISDN network, and the B1 and B2 channels, which are two information channels, and communicates with the CPU 1 via the D channel. To send and receive call control information. Also, a communication path 9 including a CODEC, a transmitter, a receiver, and the like via the B1 channel or the B2 channel.
The exchange of information between the terminals is performed between the terminals. CPU1 is ROM
Based on the program stored in the communication terminal 3, call control information is exchanged with the network interface unit 100 via the system bus 2, and the overall operation of the communication terminal is controlled.

The RAM 4, RAM 41, RAM 42
May be configured by allocating the storage areas of the one-chip RAM. The functions installed in the function group 50 of the communication terminal include a function of automatically responding to an incoming call from a member in the group, storing a message, a function of reading the recorded message from a destination, a function of A special sound calling function that conveys an important incoming call from a member, a telecontrol function that controls one's own AV equipment by a signal from a communication terminal, and a function that is used only between oneself and a person in a group. However, it is not limited to the above functions.

Next, the operation of the above-described embodiment will be described. Before performing the calling / calling operation, a comparison table between the sub-address information code and the function possessed by the terminal, that is, a list showing which destination sub-address corresponds to which function is prepared in advance using the operation unit 5. . An example of the flow of the registration operation is as follows. First, a registration button of the operation unit 5 is pressed. At this time, the CPU 1 enters a standby state for writing the sub address information code into the RAM 42. Next, from the keyboard, a sub-address information code, a key indicating the end of the sub-address information code (for example,
"*" Key), the names of the functions of the terminal are sequentially input, and finally the registration button is pressed again to indicate the end of the registration. At this time, the CPU 1 sets the sub address information code,
The names of the functions possessed by the terminal are sequentially written into the RAM 42. Thus, the registration operation for comparing one sub-address information code with the name of the function possessed by the terminal is completed. The input sub-address information code may be a name or a number representing the function of the terminal. The above operation is repeated to create a comparison between the other sub-address information codes and the names of the functions possessed by the terminal.

By providing a RAM in the operation section 5, the RAM 4 can be collectively input after a table of comparison between the sub-address information codes and the names of the functions possessed by the terminal is entered.
2 may be forwarded. Also, the situation of the above input is CP
The information is also transferred to and displayed on the display unit 6 by U1, so that the input status can be sequentially confirmed while performing the input operation. Also, when the confirmation button of the operation unit 5 is pressed,
The display status of the writing to the RAM 42 by the PU 1 is displayed on the display unit 6.
And displays the list, which shows a comparison between the sub-address information code and the name of the function possessed by the terminal.

Next, the operation at the time of an incoming call will be described with reference to the flowchart showing the control procedure of FIG. The network interface unit 100 receives the ISDN transmitted from the communication terminal of the partner.
A call setting message is received from the D channel of the network, and the call setting message is sent to the CPU 1. CP
When U1 receives this call setup message, it detects in step 401 of FIG. 4 whether the call setup message includes the destination subaddress. If the destination sub-address is not included, in step 402
Reference numeral 1 denotes a calling unit 7 which performs a normal incoming call process for generating a normal ringing tone. If the destination sub-address is included, the destination sub-address detected in step 401 is divided into a sub-address type code and a sub-address information code in step 403 and stored in the RAM 4.

Further, in step 404, the CPU
In step 403, the sub address type code stored in the RAM 4 is compared with the sub address type code already written in the RAM 41. If the subaddress type code matches the NSAP format, it is processed in step 405 as an incoming call with a normal terminal number designation. That is, when the terminal numbers match, the calling unit 7 generates a normal ringing tone. When the sub-address type code matches the user-specific sub-address format, in step 406, the CPU 1 compares the sub-address information code written in the RAM 4 in step 403 with the sub-address information code already written in the RAM 42 and the function of the terminal. Check against the list. Continue with step 4
At 07, the CPU 1 extracts the matched function from the function group 50 of the terminal, and sets the function to the operating state. For example,
When a request from a member in the group to activate the automatic recording function, the CPU 1 extracts the recording function from the terminal function group 50 and connects to the communication path 90 via the system bus 2 to form a recording state. I do.

In the case of an incoming call request for transmitting an important incoming call from a member in the group, the CPU 1 extracts a special sound calling function from the function group 50 of the terminal, and transmits the instruction content via the system bus 2. To the calling unit 7, and the calling unit 7 generates a special sound. Next, FIG. 5 is a diagram showing a configuration of another embodiment of the communication terminal according to the present invention.

The communication terminal includes a CPU 1 for executing a control program according to the present embodiment, a system bus 2 of the CPU 1 including a data bus, an address bus, a control bus, and the like.
A ROM 3 storing a control program according to the present embodiment;
A RAM 4 for storing information elements of call control information such as a call setup message, a code table of called sub-addresses shown in FIG. 7, a destination subscriber number, that is, a called number, and a sub-address type code of NSAP format and user-specific sub-address format. A RAM 41, a RAM 42 for storing the names of the functions of the communication terminals possessed by the members in the group as a sub-address information code, an operation unit 5 for specifying a sub-address type code, and inputting a sub-address information code, To check,
It comprises a display section 6 for displaying the contents of the sub-address information code stored in the RAM 42, a communication path 90, and a network interface section 100 with an ISDN network.

The network interface unit 100 separates and combines the signal channel D provided by the ISDN network and the two information channels B1 and B2, and exchanges call control information with the CPU 1 via the D channel. I do. Further, information is exchanged between terminals via a B1 channel or a B2 channel with a communication path 90 including a CODEC, a transmitter, a receiver, and the like. The CPU 1 exchanges call control information with the network interface unit 100 via the system bus 2 based on a program stored in the ROM 3, and controls the entire operation of the communication terminal.

The RAM 4, RAM 41, RAM 42
May be configured by allocating the storage areas of the one-chip RAM. Also, R
The sub address type code in the NSAP format and the sub address type code in the user specific sub address format stored in the AM 41 are “0” respectively corresponding to the fifth, sixth, and seventh bits of octet 3 of the code table of the destination sub address shown in FIG.
00 "and" 010 ".

Next, the operation at the time of transmission will be described with reference to the flowchart shown in FIG. When the call button of the operation unit 5 is pressed and the subscriber number of the destination is subsequently dialed, the CPU 1 stores the dialed number in the called number area of the RAM 41, and in step 601 of FIG. Wait for press. If the destination sub-address button is not pressed within the time determined by the CPU 1, a normal transmission process without attaching the destination sub-address is performed in step 602. When the sub-address button is pressed, it is determined in step 603 whether the sub-address type code specified by the preset sub-address type specifying switch is the NSAP format or the user-specific sub-address format.
In step 4, an ordinary outgoing call process for specifying a terminal number is performed. That is, the CPU 1 writes a sub-address information code designating the terminal number input from the dial key into the destination sub-address code table of the RAM 41, and when the start button of the operation unit 5 is pressed, other information stored in the RAM 4 in advance. A call setup message is formed together with the elements and transmitted to the D channel, which is a signal channel of the ISDN network, via the network interface unit 100.

If the sub-address type code is in the user-specific sub-address format, the CPU 1
The designated function is extracted from the retained functions stored in the RAM 42, and subsequently, in 606, a calling process in which the communication terminal function is designated is performed. That is, the CPU 1 writes the name of the extracted function as a sub-address information code in the code table of the destination sub-address of the RAM 41 and, when the start button of the operation unit 5 is pressed, combines with the other information elements stored in the RAM 4 in advance. A call setup message is formed and transmitted to the D channel, which is a signal channel of the ISDN network, via the network interface unit 100.

[0027]

As described above, according to the present invention,
Clearly separate highly open information, such as selecting a specific terminal from the same terminal type, and highly confidential information, such as selecting information within an individual or group, such as selecting functions possessed by a terminal. Will be able to handle it. This allows the caller to select and call a specific terminal or function at the time of calling, even if the other party has a plurality of terminals of the same terminal type or the other party's communication terminal has various functions. So that no extra communication time is required for the selection. In addition, the called party can consider both the nature of the information and the incoming call response to the highly open information and the incoming call response to the highly confidential information.

[Brief description of the drawings]

FIG. 1 is a claim correspondence diagram according to claim 1 of the present invention.

FIG. 2 is a drawing corresponding to claim 2 of the present invention.

FIG. 3 is a block diagram showing a configuration of a communication terminal according to one embodiment of the present invention.

FIG. 4 is a flowchart illustrating an operation of a communication terminal according to an embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a communication terminal according to another embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of a communication terminal according to another embodiment of the present invention.

FIG. 7 is a diagram showing a code table of an information element destination sub-address used in each embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... CPU 2 ... System bus 3 ... ROM 4 ... RAM 5 ... Operation part 6 ... Display part 7 ... Calling part 10 ... Incoming signal reception part 20 ... Destination sub-address detection part 30 ... Sub-address Type code selection unit 40 sub-address information code detection unit 41 RAM 42 RAM 50 communication terminal function group 60 communication terminal function list recording unit 70 verification unit 90 communication channel 100: Network interface unit 110: Sub-address type code designation button

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/00 H04M 1/24-1/62 H04M 1/66-1/82 H04M 11/00-11 / Ten

Claims (4)

(57) [Claims] 1. A destination sub-ad included in a call setup message.
Sub-address type code, one of the
A communication terminal for recording a list of functions possessed by the communication device in a communication device in a communication network using an exchange connection control method capable of selecting one of a first sub-address format and a second sub-address format. a function list recording unit, and the sub-address detection unit for detecting the subaddress from the received incoming signal, a type code selection unit for detecting a sub-address type code from the detected sub-address in the deposition sub-address detection unit, the deposition subaddress detection an information code detecting unit for detecting a sub-address information code from the detected sub-address in parts, sub-address type code detected by the type code selection unit was the second subaddress format field
In the case , the sub address information code detected by the information code detection unit is recorded in the communication terminal function list recording unit .
Functionality and matches, the communication based on the comparison result
Communication apparatus characterized by comprising a verification unit for selecting one of the recorded function signal terminal function list recording section. Wherein in said communication device, according to claim 1, characterized by comprising a type code specifying section for setting a sub-address type code, and a type code selection unit for selecting the sub-address type code Communication equipment
Place . 3. The first sub-address format is NSAP.
And the second sub-address format is the communication device.
2. The format according to claim 1, wherein
The communication device as described. 4. The communication device according to claim 1, wherein the communication network is an ISDN.