JPH06104952A - Isdn terminal equipment function addition system - Google Patents

Abstract

PURPOSE:To use a same terminal equipment for each integrated services digital network in common by receiving and identifying a required packet program from an integrated services digital network at a terminal equipment so as to store the program in a storage means. CONSTITUTION:An integrated services digital network 200 uses a built-in transfer means to transfer a program executed to realize a fixed function provided with a terminal equipment 100 to the equipment 100 as a D-channel packet. The equipment 100 uses an identification means 101 to identify the transfer program from other packet data and the identified program is stored in a storage means 102. Thus, the one and the same terminal equipment is used in common for each integrated services digital network and the terminal equipment suitable for various integrated services digital networks is realized with excellent economicity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to I in a service integrated digital network having a D channel packet transfer function.
The present invention relates to an SDN terminal device function addition system.

[0002]

[Prior Art] International Telegraph and Telephone Consultative Committee (CCITT)
The integrated service digital network (ISDN), which is being standardized in the United States, etc., is becoming popular mainly in public communication networks, and various terminal devices that can be accommodated in these integrated service digital networks for public communication are being developed. is there.

Further, integrated service digital network (ISD)
N) is also being considered for introduction in the field of private branch exchange networks. However, in the private branch exchange network, various peculiar service functions (for example, camp-on function, message waiting function, etc.) that are not yet practically used in public communication networks are practically used, and as a result, in public communication terminal devices. In comparison, the display device has a large and sophisticated display function, a large number of operation keys are provided, and the function of each operation key can be freely assigned according to the user's request. However, it was in practical use for private branch exchange networks.

Therefore, the terminal devices used in the integrated service integrated digital network for private exchanges are various services developed for accommodating in the integrated service integrated digital network for public communication. It is impossible to satisfy the function.

It is to be noted that a terminal device for a general service digital network for private branch exchange satisfying the above-mentioned service function peculiar to the private branch exchange network should be developed separately from a terminal device for a general digital service network for public communication. Although it is considered, the number of demands is much smaller than that of a terminal device intended for a public communication service integrated digital network, which makes it expensive.

[0006]

As is apparent from the above description, a conventional terminal device developed for accommodating, for example, in a public communication service integrated digital network satisfies a service function peculiar to a private branch exchange network. Therefore, there is a problem that cannot be applied to the integrated service integrated digital network for private branch exchange.If a terminal device dedicated to the integrated service integrated digital network for private branch exchange is developed, it will be developed for the integrated comprehensive service digital network for public communication. There is a problem in that it is more expensive and less feasible than the existing terminal device.

An object of the present invention is to make a terminal device applicable to various service integrated digital networks as economical as possible.

[0008]

FIG. 1 is a diagram showing the principle of the present invention. In FIG. 1, reference numeral 200 is a service integrated digital network which is the object of the present invention, and 100 is a terminal device accommodated in the service integrated digital network 200.

The service integrated digital network 200 is
It is assumed that the terminal device 100 to be accommodated has a function capable of transferring a packet via the D channel.
201 is a comprehensive service digital network 20 according to the present invention.
0 is a transfer means.

Reference numeral 101 is an identification means provided in the terminal device 100 according to the present invention. 102 is a storage means provided in the terminal device 100 according to the present invention.

[0011]

The transfer means 201 transfers, to the terminal device 100, a program executed to realize the unique function of the terminal device 100 as a D channel packet.

The identifying means 101 identifies the program transferred by the D channel packet from the integrated service digital network 200 from other packet data. The storage unit 102 stores the above-mentioned program identified by the identification unit 101 in a predetermined storage area in the terminal device 100.

Therefore, when a terminal device that can be shared by a plurality of types of service integrated digital networks having different functions is developed and installed and accommodated in each individual service integrated digital network, a unique function is realized. By transferring and storing the program to be executed on the terminal device as a D channel packet, the same terminal device can be shared by each service integrated digital network, and the terminal device applicable to various service integrated digital networks is economically available. It becomes feasible.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 2 is a diagram showing an ISDN terminal device according to an embodiment of the present invention, FIG. 3 is a diagram showing an example of a unique program transfer process in FIG. 2, and FIG. 4 is an example of a unique program storage process in FIG. FIG. The same reference numerals denote the same objects throughout the drawings.

In FIG. 2, an ISDN exchange 2 is shown as the integrated service digital network 200 in FIG. 1, and an ISDN terminal device 1 is shown as the terminal device 100 in FIG. 1. The ISDN terminal device 1 is a CCITT.
It is accommodated in the ISDN exchange 2 via a subscriber line 3 conforming to a basic interface (so-called 2B + D) recommended as a user / network interface in.

The ISDN exchange 2 has an ISDN subscriber circuit (ISL) 21, similar to the conventional ISDN exchange 2.
Network (NW) 22, Call processing device (CPR) 23
In addition to the storage unit (MEM) 24, a transfer unit 231 is provided in the call processing unit (CPR) 23 as the transfer unit 201 in FIG. 1, and the unique function program (SP) is also included in the storage unit (MEM). It is stored in 24. The role of the unique function program (SP) will be described later.

The ISDN terminal device 1 is a conventional IS
Similar to the DN terminal device 1, the terminal unit 111, the B1 channel processing unit 112, the B2 channel processing unit 113, the D channel processing unit 114, the call / data processing unit 115, and the control unit 11
6, read only memory (ROM) 117, display control unit 118, keyboard control unit 119, handset 121,
A data input / output unit 122, a display 123, and a keyboard 124 are provided, an identification unit 131 is provided in the control unit 116 as the identification unit 101 in FIG. 1, and a storage unit 13 is provided as the storage unit 102 in FIG.
2 is provided in the control unit 116, and a read / write memory (RAM) 133 is provided.

The ISDN subscriber circuit (ISL) 21 accommodates the ISDN terminal device 1 via the subscriber line 3 and transfers a packet via the D channel provided in the subscriber line 3. Packet processing unit (DCP) 211
It is equipped with.

The terminating unit 111 is connected to the I line via the subscriber line 3.
It is connected to the SDN subscriber circuit (ISL) 21 and terminates the B1 channel, B2 channel and D channel provided in the subscriber line 3.

The B1 channel processing unit 112 and the B2 channel processing unit 113 convert the voice and data (including the B channel packet) transferred via the B1 channel and the B2 channel of the subscriber line 3 into the speech / data processing unit 1.
Transfer to and from 15.

The D channel processing unit 114 transfers the call control information and the D channel packet transferred via the D channel of the subscriber line 3 to and from the control unit 116. The call / data processing unit 115 is a B1 channel processing unit 112.
And between the B2 channel processing unit 113 and the handset 121 and the data input / output unit 122, transfer voice and data (including the B channel packet), and between the D channel processing unit 114 and the data input / output unit 122. Then, the D channel packet is transferred via the control unit 116.

The read only memory (ROM) 117 is an IS
Before the operation of the DN terminal device 1 is started, the basic function program (BP) is always stored. The display control unit 118 controls various displays on the display 123 under the control of the control unit 116.

The keyboard control unit 119 includes the keyboard 1
24 operations are detected and notified to the control unit 116. The control unit 116 executes a basic function program (BP) stored in advance in the read-only memory (ROM) 117, thereby performing a basic function (for example, public communication service comprehensive service) that the ISDN terminal device 1 should have. It is a function that must be provided in common whether it is accommodated in a digital network or a comprehensive service digital network for private branch exchange. When the unique function program (SP) is stored in the read / write memory (RAM) 133, by executing the unique function program (SP), a unique service function (for example, public communication) that the ISDN terminal device 1 should have. It is not required if it is accommodated in the integrated service integrated digital network, but is required if it is accommodated in the private branch integrated integrated service network. Which is a function, but detailed description thereof will be omitted) to realize.

2 to 4, when the ISDN terminal device 1 is accommodated and operated in, for example, a public communication service integrated digital network, the control unit 116 is operated as described above.
However, only by executing the basic function program (BP) previously stored in the read-only memory (ROM) 117, the necessary and sufficient functions can be realized as the ISDN terminal device 1 for the public communication network.

When the ISDN terminal device 1 is housed in, for example, a private branch exchange ISDN exchange 2 and operated,
A request for downloading the unique function program (SP) is generated in the call processing device (CPR) 23 of the ISDN exchange 2 (step S31 in FIG. 3), and the transfer unit 231 is activated.

The activated transfer unit 231 is a storage device (M
The unique function program (SP) stored in advance in the EM) 24 is extracted (step S32), and the extracted unique function program (SP) is transferred to the ISDN terminal device 1 via the D channel of the subscriber line 3. Split into possible packet data and ISDN via network (NW) 22
Transfer to the D channel packet processing unit (DCP) 211 in the subscriber circuit (ISL) 21 to instruct the ISDN terminal device 1 to transfer the D channel packet.

D channel packet processor (DCP) 21
1 assembles a D channel packet with packet data obtained by dividing the unique function program (SP) on the basis of an instruction from the transfer unit 231 (step S33), and D of the subscriber line 3
The data is transferred to the ISDN terminal device 1 via the channel (step S34).

In the ISDN terminal device 1, the ISDN
Data transferred from the exchange 2 via the D channel of the subscriber line 3 includes the terminating unit 111 and the D channel processing unit 1.
It is transmitted to the control unit 116 via 14.

When the control unit 116 receives the data transferred via the D channel of the subscriber line 3 (step S41 in FIG. 4), the type of the received data is either call control information or D channel packet. If the received data is analyzed with the call control information (step S43), a known call control process based on the call control information is executed, but the received data is analyzed as a D channel packet. In this case (step S43), the D channel packet is disassembled, the packet data contained therein is extracted (step S44), and then the identification unit 131 is activated to instruct to analyze the type of the extracted packet data.

The activated identification unit 131 analyzes whether or not the type of the extracted packet data is a unique function program (SP) (step S45), and notifies the control unit 116 of the analysis result.

In the control unit 116, the packet data type notified from the identification unit 131 is the unique function program (SP).
If not (step S46), the data input / output unit 122 determines that the packet data should be received, and
The data is transferred to the data input / output unit 122 via the data processing unit 115, but if the packet data type is the unique function program (SP) (step S46), the storage unit 1
32 is activated, and an instruction is issued to store the unique function program (SP) in the read / write memory (RAM) 133.

The activated storage unit 132 stores the unique function program (SP) in the read / write memory (RAM) 133 (step S47). Unique function program (S
When P) is completely stored in the read / write memory (RAM) 133, it means that the download of the unique function program (SP) from the ISDN exchange 2 to the ISDN terminal device 1 is completed.
M) unique function program (S) stored in 133
By executing P), the basic function program (B
By executing P), a unique function that cannot be realized can be realized.

As is clear from the above description, according to the present embodiment, the basic function program (B
When only the basic function that can be realized by executing P) is requested, the unique function program (SP) is not downloaded from the ISDN exchange 2 to the ISDN terminal device 1 and is stored in the read-only memory (ROM) 117. Only the basic function program (BP) stored in advance will be executed, and the basic function that can be realized by executing the basic function program (BP) in the ISDN terminal device 1 as well as the execution of the unique function program (SP) If a unique function that can be realized by is also requested, the unique function program (SP) is downloaded from the ISDN exchange 2 to the write / read memory (RAM) 133 in the ISDN terminal device 1, and the read-only memory (ROM) is downloaded. A basic function program (BP) previously stored in 117 and a read / write memory (RAM) 1 It becomes possible to execute the specific function program (SP) which is downloaded to 3, the same I
The SDN terminal device 1 can be shared by both parties.

It should be noted that FIGS. 2 to 4 are merely examples of the present invention, and for example, the specific functions which are the subject of the present invention are not required in the public service integrated digital network, but are private exchanges. In the integrated service integrated digital network, the required functions are not limited, and many other modifications can be considered, but the effect of the present invention does not change in any case. Further, the subscriber line 3 connecting the ISDN exchange 2 and the ISDN terminal device 1 is not limited to the one conforming to the basic interface (so-called 2B + D), such as one conforming to the primary group speed interface (so-called 23B + D). Many other modifications can be considered, but in any case, the effect of the present invention does not change. The transfer means 20
1. The identifying unit 101 and the storing unit 102 are not limited to the transfer unit 231, the identifying unit 131, the storing unit 132, and the writing / reading memory (RAM) 133 shown in the figure, and many other modifications are considered. However, the effect of the present invention does not change in any case. Further, the comprehensive service digital network 200 and the terminal device 100 which are the subject of the present invention
Needless to say, the present invention is not limited to the illustrated ISDN exchange 2 and ISDN terminal device 1.

[0035]

As described above, according to the present invention, in the service integrated digital network, a terminal device that can be shared by a plurality of types of service integrated digital networks having different functions is developed and placed, and individual service integrated digital networks are provided. When accommodated in a network, a program to be executed for realizing each unique function is transferred and stored as a D channel packet to a terminal device, so that the same terminal device can be shared by each service integrated digital network, and various A terminal device applicable to an integrated service digital network can be economically realized.

[Brief description of drawings]

FIG. 1 is a diagram showing the principle of the present invention.

FIG. 2 is a diagram showing an ISDN terminal device according to an embodiment of the present invention.

FIG. 3 is a diagram showing an example of a unique program transfer process in FIG.

FIG. 4 is a diagram showing an example of a unique program storage process in FIG.

[Description of Reference Signs] 1 ISDN terminal device 2 ISDN exchange 3 subscriber line 21 ISDN subscriber circuit (ISL) 22 network (NW) 23 call processing device (CPR) 24 storage device (MEM) 100 terminal device 101 identification means 102 storage Means 111 Termination unit 112 B1 channel processing unit 113 B2 channel processing unit 114 D channel processing unit 115 Call / data processing unit 116 Control unit 117 Read only memory (ROM) 118 Display control unit 119 Keyboard control unit 121 Handset 122 Data input / output Part 123 Display 124 Keyboard 131 Identification Part 132 Storage Part 133 Write / Read Memory (RAM) 200 Integrated Services Digital Network (ISDN) 201 Transfer Means 211 D Channel Packet Processor (DCP) 231 Transfer Section

Claims (1)

[Claims] 1. The terminal device (100) to be housed is D
In a comprehensive service digital network (200) capable of transferring a packet via a channel, a program to be executed to realize a unique function of the terminal device (100) is provided in the comprehensive service digital network (200). , A transfer means (201) for transferring to the terminal device (100) as a D channel packet is provided, and the program transferred to the terminal device (100) by the D channel packet from the integrated service digital network (200) is provided. An identifying unit (101) for identifying other packet data, and a storing unit (102) for storing the program identified by the identifying unit (101) in a predetermined storage area in the terminal device (100). An ISDN terminal device function addition system characterized in that