JPH0236634A - Communication terminal adaptor - Google Patents

Abstract

PURPOSE:To evade a trouble of a start instruction or the like to a terminal adaptor identifying the state of an electric signal of a packet terminal equipment so as to apply automatic connection to a packet handler in the network. CONSTITUTION:When a signal detection section 18 detects it that a packet terminal equipment 5 is ready, a dial notice section 19 starts a D channel procedure to connect a B channel to the packet handler automatically. When the connection of the packet handler of the B channel is finished, and electric ready state is informed to the packet terminal equipment 5. Thus, in the case of applying packet communication, the start processing in the terminal adaptor is not required by allowing the user to have only to register the connection information of the packet handler.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a communication terminal adapter for connecting an existing communication terminal to an integrated services digital network (hereinafter referred to as an ISDN network).

[Conventional technology]

Figure 3 shows a conventional communication terminal adapter of this type.
An example of an SDN 4-terminal adapter is shown, in which (1) is a network terminal device, (2) and (3) are ISDN basic interface (hereinafter referred to as I/F), D channel and B This is a schematic diagram of a channel.

(4) is a physical line that connects the communication terminal (5) and the terminal adapter (7) and transmits and receives user information such as packet data;
(6) shows a two-wire line that connects an exchange (not shown) and the network termination device (1).

The configuration of the terminal adapter (7) will be described below.
) is the rsDN layer 1 processing unit, (9) is the ISDN layer 2 processing unit, (10) is the ISDN layer 3 processing unit, and (11) is the ISDN layer 3 processing unit.
) is the communication management department. Also, (12a) and (12b
) is the monitor, (13) is the ISDN basic I/F electrical level termination part, (14) is the switch that connects the data line from the terminal to the 81 or B2 channel, (15)
) is the key human power department, (16) determines the input key,
A key manual code analysis execution section that sends information to the communication management section (11), (17) an electrical level termination section of the terminal I/F line, and (18) a display section.

Before explaining the operation, the ISDN connection procedure will be described. In the l5OH connection procedure, first, layer 1,
In other words, the terminal and the exchange are electrically connected (in this case, between the terminal adapter (7) and the exchange via the network termination device (1)), then a link is established using the layer 2 procedure, and then the layer In step 3, bearer configuration, channel B
It is necessary to specify either 1 or 82 and the address of the communication partner, and to connect the B1 or B2 channel to the network as a data channel. After this, user information can be sent and received on the B1 or B2 channel and services of the ISDN network can be used.

Next, the operation of the configuration shown in FIG. 3 will be explained. Before the communication terminal (5) is ready to send and receive user information, the user uses the keypad (15) to specify the address of the communication partner and connects to the 81 or B2 channel network using the terminal adapter ( 7). This instruction is
The key human code analysis execution unit (
16), where it is analyzed to determine that it is a connection request, and then transmitted as a command to the communication management section (11). The communication management unit (11) uses the layer 3 IA buried unit (11) to connect the empty channel 81 or B2 to the network.
0) via the monitor (12a). The layer 3 processing unit (lO) similarly issues a link connection request to the layer 2 processing unit (9) via the monitor (12a). Further, the layer 2 processing section (9) similarly issues a connection instruction to the layer 1 processing section (8) via the monitor (12a). The layer 1 processing unit (8) issues a synchronization establishment instruction to the electrical level termination unit (13), and when synchronization is established, the electrical level termination unit (13) sends a response to the layer IIA management unit (8). return,
Next, the layer 1 processing section (8) is processed by the layer 2 processing section (9).
) returns a connection response. After the layer 2 processing unit (9) executes the TEI assignment procedure and establishes a link, the layer 3
A response is returned to the processing unit (lO). Then, the layer 3 processing unit (lO) sends the SET UP (connection request) message containing essential information such as the party number (other party address), channel identification, and bearer information passed from the communication management unit (11) to the network terminal. Send to device (1). After this, (:AL
Receive L PROC and C0NN messages from the network,
Layer 3 connection is completed. The layer 3 processing unit (10) notifies the communication management unit (11) that the layer 3 connection has been completed, making it possible to send and receive user information.

In order to notify the user of this fact, a display is displayed on the display unit (20) using means such as lighting up an LED, and when the user recognizes the display, the communication terminal (5) starts transmitting and receiving user information.

Note that the D channel procedure signal up to connecting the aforementioned 81 or B2 channel to the network is transmitted via the D channel (2) to the 2 wire line (6) via the network termination device (1), or Received from line. Also,
User information such as packet data is transmitted and received through the B channel (3) in the same manner as the D channel.

Further, the channel switching unit (14) connects the channel 81 or B2 and the data line from the terminal, and receives switching instructions from the communication 3 management unit (11).

[Problem to be solved by the invention]

Conventional equipment is configured as described above, so in order for a user to perform packet communication, he or she first presses a key on the terminal adapter to instruct connection to the packet handler in the network, and then connects the LED, etc. It was necessary to recognize the display and start sending and receiving packet data.

In addition, there is no part in charge of voice bearer, and only one IS
There was a problem in that the three bearer services of ISDN could not be used with the D N terminal adapter.

This invention was made to solve the above-mentioned problems, and in the first invention, when performing packet communication, the startup process in the terminal adapter can be performed simply by the user registering the connection information of the packet handler. The purpose is to obtain a communication terminal adapter that can be made unnecessary, and
A second object of the present invention is to obtain a communication terminal adapter that allows a user to easily select and use three of the ISDN bearer services: voice, circuit switching, and packet switching.

[Means to solve the problem]

A communication terminal adapter according to a first invention connects a communication terminal to an IS
In a communication terminal adapter that connects to a DN network, a signal detection unit that detects a connection signal from a packet terminal as a communication terminal, a registration holding unit that registers and holds information for connecting to a packet handler, and after the above detection, an ISDN and a connection means for performing connection processing to a packet handler within the network.

Moreover, in the communication terminal adapter according to the second invention,
In a communication terminal adapter that connects a communication terminal to an ISDN network, a bearer selection means selects a bearer to be used from among three bearers of the ISDN, and a judgment means determines information necessary for connection with the network for each selected bearer. , an information holding section that holds information for each bearer, and a voice bearer utilization means that converts or inversely converts voice signals from a handset or a user and a decoder into digital signals when selecting a voice bearer.

[Operation] In the first invention, when the signal detection section detects that the packet terminal is in a ready state, the transmission notification section automatically starts the D channel procedure to connect the B channel to the packet handler. let When the connection of the B channel to the packet handler is completed, ready is electrically notified to the packet terminal.

Further, in the second invention, the bearer to be used is selected by the bearer selection means, information necessary for connection with the network is determined for each selected bearer, and a connection request is sent to the network. , three bearers of I5DH can be used with one terminal adapter. When using a voice bearer, it is used by means of using the voice bearer alone.

(Example) Each example of the first and second inventions will be described below with reference to the drawings. FIG. 1 shows the configuration of an embodiment according to the first invention, and the same parts as in FIG. 3 are given the same reference numerals, and the explanation thereof will be omitted. In the figure, (18) is a signal detection unit that detects a connection signal from a packet terminal (5) as a communication terminal;
(20) inputs the address of the intra-network packet handler inputted by the key human power section (15) into the key human power analysis execution section (15).
6) and a party number holding section as a registration holding means for registering and holding information for connecting to the packet handler by registering and holding it through the communication management section (11), and (19) the signal detection section (18). Notifies the communication management unit (11) of a detection signal obtained by D channel protocol, selects an empty channel based on the detection signal, extracts the address to the packet handler from the party number holding unit (20), and includes information necessary for the D channel protocol. Layer 3 boot instructions
A call notification section that notifies the processing section (10) is shown, and the call notification section (19), a communication management section (11), and a switch (14) are shown.
) constitutes a connection means that performs connection processing to a packet handler in the ISDN network based on the detection signal.

Next, the operation related to the above configuration will be explained.

The user can send the address of the packet handler to the terminal adapter (7) via the key human power unit (15), and the manually generated code is sent to the key human power analysis execution unit (16).
The data is analyzed by the party number storage unit (20) via the communication management unit (11) and stored in the party number holding unit (20). After that, when the packet terminal (5) electrically notifies the ready state via the connection line (4), the terminal adapter (7) detects this signal at the signal detection unit (18) and sends an outgoing notification. A notification is sent to the communication management section (19), and a transmission notification is sent to the communication management section (11). The communication management unit (11) selects an empty B channel, extracts the address for the packet handler from the party number holding unit (20), and sends a startup instruction with information necessary for the D channel protocol to the layer 3 processing unit (10). Notice. Below, layer 2 processing section (9) layer 1 processing section (8
) notification and processing are the same as in the conventional example.

Upon receiving a C0NN message (connection completion in layer 3 procedure) in the D channel protocol, the channel switching unit (14) switches the selected B1 or B2 channel and packet terminal (5) according to instructions from the communication management unit (IT). Connect the data line from. Further, the communication management unit (11) notifies the terminal-compatible electrical level termination unit (17) of the completion of the connection, and notifies the terminal adapter side of a ready signal (electrically). This enables the packet terminal (5) to send and receive packet data.

Therefore, according to the above embodiment, the packet terminal (5)
Since the state of the electrical signal of the ISDN network is identified and the connection is automatically made to the packet handler within the network, the user does not have to instruct the terminal adapter (7) to start up when making a call. becomes available.

In addition, in the above embodiment, a means for registration was provided so as to be able to cope with changes in the address of the packet handler, but if the address is fixed, the registration means can be maintained by retaining it in the system. This can simplify system production.

Next, FIG. 2 shows the configuration of an embodiment according to the second invention, and the same parts as in FIG. 3 are given the same reference numerals, and the explanation thereof will be omitted. Therefore, in the figure, (21) is a bearer selection key human power section as a bearer selection means for selecting one of voice, line, and packet bearers, (22) is a bearer selection key human power analysis execution section, (23) is a voice bearer information holding unit that holds information necessary for connection to the network when using a voice bearer, and (24) and (25) similarly hold information for circuit switching and packet switching. It is a circuit-switched and packet-switched bearer information holding unit. Further, (12C) is a monitor, (2S) is an audio department that converts or inversely converts audio signals from a handset or a user and a decoder into digital signals when selecting an audio bearer, and (27) is an audio unit that converts audio signals from a handset or a user and a decoder into digital signals when selecting an audio bearer. Switch the data line and the audio line from the audio department (26) to B1 or B.
This is a switch that connects to 2 channels.

Next, the operation will be explained. First, an example will be shown in which a voice bearer is used. The user can select the bearer using the key personnel section (
When a voice bearer is selected from 21), the key input information is analyzed by the bearer selection key input analysis execution unit (22) and notified to the communication management unit (11). Subsequently, when the user goes off-hook from the receiver of the voice handling section (26), the voice handling section (26) notifies the communication management section (11) of the off-hook information. When you receive this notification,
The communication management section (11) retrieves information necessary for connection to the network from the voice bearer information holding section (23) and displays it on the display section (18) to prompt the user for assistance. Next, when the user inputs the information necessary for connecting to the network from the key input section (15),
The key-manufactured information is analyzed by the key-manpower analysis execution section (16) and notified to the communication management section (11). Upon receiving this notification, the communication management unit (11) selects a vacant B channel and notifies the layer 3 processing unit (10) of a startup instruction accompanied by information necessary for connection to the network. Below, Layer 2 processing unit (9) Layer 1! The notification and processing to the A-embedded section (8) are the same as in the conventional example.

In addition, when a C0NN message (connection completion in layer 3 procedure) is received in the D channel procedure, the channel and line connection switch (27) connects the selected B1 or B2 channel and the audio section according to instructions from the communication management section (11). Connect the audio line from (26).

Further, the communication management section (11) notifies the voice section (2G) of the completion of the connection, and the user can now perform voice communication.

The operation when using circuit switching or packet switching is almost the same as when using voice bearers, but there are five differences. The first is when the user selects a bearer selection key (21).
) to select circuit switching or packet switching, the second is that there is no off-footer operation of the voice section (26), and the third is that the information necessary for connection to the network is not transmitted in the case of circuit switching. is extracted from the circuit-switched bearer information holding unit (24), and in the case of packet switching, is extracted from the packet-switched bearer information holding unit (25).Fourth, the channel and line connection switch (27) This is the point where the data line from the terminal (5) is connected, and the fifth
The point is that the communication management section (11) notifies the user of the completion of the connection using the display section (18) (same as in the conventional example).

Therefore, according to the above embodiment, since a means for using a voice bearer and a means for selecting a bearer and sending a connection request to the network according to the bearer are provided, the user can connect to the network using one terminal adapter. Three bearer services are available.

In the above embodiment, when using a voice bearer, after selecting the voice bearer from the bearer selection key manual unit (21) and going off-hook, the user is prompted to input the information necessary for connection to the network. By omitting the selection of the voice bearer and recognizing off-hook as the selection of the voice bearer, the user's effort can be saved.

[Effects of the Invention] As described above, according to the first aspect of the present invention, the state of the electrical signal of the packet terminal is identified and the connection is automatically made to the packet handler in the network. This eliminates the trouble of instructing the user to start up the terminal, etc., and it becomes possible to use the packet terminal without being particularly aware of the ISDN network.

Further, according to the second aspect of the present invention, since means for using a voice bearer, means for selecting a bearer, and means for determining necessary information for each bearer are provided, a user can use one ISD.
With the N terminal adapter, it is possible to use three bearers: voice, circuit switching, and packet switching.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment according to the first invention, FIG. 2 is a block diagram of an embodiment according to the second invention, and FIG. 3 is a block diagram of a conventional terminal adapter. (5)...Communication terminal (packet terminal), (7)...
Terminal adapter, (11)...Communication management section, (14), (27)...Switch as channel switching section, (15)...Key human power section, (16)...Key human power code analysis Execution part, (18)・
...Signal detection section, (19)...Outgoing notification section, (20)...Party number holding section as registration holding means, (21)...Bearer selection key manual section as bearer selection means, 22...Key human power analysis unit for bearer selection, 23)...
Voice bearer information holding unit, 24)... Circuit switched bearer information holding unit, 25... Packet switched bearer information holding unit, 26... Voice responsible unit as voice bearer utilization means. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] (1) In a communication terminal adapter that connects a communication terminal to an ISDN network, a signal detection section that detects a connection signal from a packet terminal as a communication terminal, and a registration holding means that registers and holds information for connecting to a packet handler. . A communication terminal adapter comprising: a connection means for performing connection processing to a packet handler in an ISDN network after the above detection. (2) In the communication terminal adapter that connects the communication terminal to the ISDN network, there is a bearer selection means that selects the bearer to be used from among the three bearers of the ISDN, and information necessary for connection with the network is determined for each selected bearer. The present invention is characterized by comprising: a determination means, an information holding unit that holds information for each bearer, and an audio bearer utilization means that converts or inversely converts an audio signal from a handset or a coater and decoder into a digital signal when selecting an audio bearer. Communication terminal adapter.