JP3278866B2 - ISDN terminal adapter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ISDN terminal adapter, and more particularly to an ISDN terminal for outputting billing information by voice.
Regarding terminal adapter.

[0002]

2. Description of the Related Art ISDN stands for Integrated Service Digital Network.
al Network), and ISDN transmits and unifies all media information such as telephone, facsimile, data, and videotex in digital format.
Be exchanged. Communication services for these various media are provided with a unified user / network interface under one subscription contract with the same number. Further, additional services such as billing information and caller ID notification are also provided.

[0003] As a switching system, either a circuit switching system or a packet switching system can be selected.

As an interface, a basic interface composed of two B channels and one D channel (expressed as 2B + D), a primary group speed interface capable of simultaneously using a maximum of 23 B channels (expressed as 23B + D), and Has been internationally standardized.

[0005] The B channel is an information channel of 64 kbps.
It has a communication speed of and allows the user to freely transmit information, and can be used for both circuit switching and packet switching.

D channel (1 for basic interface)
6 kbps, 64 kb for primary rate interface
A signal channel having a communication speed of ps) is called a signal channel, and is used to carry charging information, a signal for controlling exchange of information channels, and user packet data.

FIG. 2 shows a conventional ISDN terminal adapter. In the prior art shown in FIG. 2, a first telephone subscriber circuit 2 connected to the B1 channel, a second telephone subscriber circuit 3 connected to the B2 channel, and these telephone subscriber circuits 2, 3 and ISDN An S / T interface 7 for interfacing with the S / T bus of the network, a call signal generating means 9 for transmitting a call signal to the corresponding telephone subscriber circuits 2 and 3 upon reception, and a corresponding telephone subscriber circuit 2 3
Tone generating means 5 for transmitting a tone signal to the telephone subscriber circuit 2 , PB signal receiving means 4 for receiving a PB signal on the B channel transmitted from the analog terminal of the telephone subscriber circuits 2 and 3 , and S / T
Data link means 6 for performing protocol processing of the D channel information sent from the network side through the interface 7 and the D channel information sent from the analog terminals of the telephone subscriber circuits 2 and 3 , and a message such as billing information is displayed. Based on information from the display means 10, the telephone subscriber circuits 2 and 3 , the PB signal receiving means 4 and the data link means 6, the call signal generating means 9, the tone generating means 5, the display means 10 and the data link means 6 are controlled. And control means 8.

The D channel information sent from the network at the end of the call is input to the data link means 6 via the S / T interface circuit 7. In the data link means 6, the D channel information is subjected to protocol processing, and the billing information is output to the control means 8. The control means 8 stores the sent accounting information. After the end of the call, a charging information output trigger signal is generated by hooking of the user, and requests the control means 8 to output the charging information. Then, the control means 8 causes the display means to display a message such as "call fee is 150 yen" in accordance with the stored billing information.

[0009]

However, in the above conventional example, the billing information is output only to the display means.
Tata to the user's location away from the ISDN terminal adapter in order there is a problem that could not tell the billing information.

[0010] Further, the ISDN terminal adapter having no display means could not output billing information at all.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an ISDN terminal adapter which can solve the above-mentioned disadvantages of the prior art and is particularly suitable for notifying a user of a message such as billing information by voice.

[0012]

Therefore, according to the present invention, there is provided an S / T interface for interfacing a telephone subscriber circuit with an S / T bus of an ISDN network, and a call signal to a corresponding telephone subscriber circuit upon reception. Calling signal generating means for transmitting, tone generating means for transmitting a tone signal to a corresponding telephone subscriber circuit, and PB signal receiving means for receiving a PB signal on a B channel transmitted from an analog terminal of the telephone subscriber circuit. , S / T and data link means for performing D channel information protocol processing sent from the network side through an interface, Ya call signal generating means based on information from the telephone subscriber circuit and PB signal receiving means and the data link means and control means for controlling the tone generating means and the data link means further telephone subscription in response to an instruction from the control means To reach to the analog terminal of the circuit
And a voice synthesizing means for outputting message information in voice. This aims to achieve the above-mentioned object.

[0013]

When the D-channel information sent from the network side at the end of the call is input to the data link means via the S / T interface, the data link means performs D-channel information protocol processing and billing information is transmitted. Generated and output to the control means. The control means stores the sent billing information, and the billing information output trigger signal generated by the hooking of the user causes the control means to control the voice synthesizing means according to the stored billing information. If only the voice synthesized, such as the now call charges was 150 yen ", away from the ISDN terminal adapter
And output it to reach the users at the location .

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. The embodiment of FIG. 1 shows a first telephone subscriber circuit 2 connected to the B1 channel, a second telephone subscriber circuit 3 connected to the B2 channel, and these telephone subscriber circuits 2, 3 and ISDN. An S / T interface 7 for interfacing with the S / T bus of the network, a call signal generating means 9 for transmitting a call signal to the corresponding telephone subscriber circuits 2 and 3 upon reception, and a corresponding telephone subscriber circuit
A tone generating means (5) for transmitting a tone signal to 2,3, the PB signal receiving means 4 for receiving the PB signal in the sent B channel from the analog terminal subscriber circuits 2 and 3,
S / T through an interface 7 and the data link means 6 for performing D channel information protocol processing sent from the network side, telephone subscriber circuit messages such as billing information
A voice synthesizing means 1 for outputting voices so as to reach the analog terminals 2 and 3; a call signal generating means 9 based on information from the telephone subscriber circuits 2 and 3; The control means 8 controls the tone generating means 5, the voice synthesizing means 1, and the data link means 6.

In this embodiment, two telephone subscriber circuits and one
Although it is composed of one S / T interface, it is not limited to these numbers.

The first telephone subscriber circuit 2 and the second telephone subscriber circuit 2
The telephone subscriber circuit 3 accommodates analog terminals connected to port 1 and port 2, respectively.

Here, a layer model in ISDN will be briefly described. OSI (OpenSystems I
A model (OS) in which functions for communication between two systems are divided into seven layers
I reference model), and an independent protocol is designed and systematized for each layer. These are a physical layer as layer 1, a data link layer as layer 2, a layer 3
, A transport layer as layer 4, a session layer as layer 5, a presentation layer as layer 6, and an application layer as layer 7. In general, layers 1 to 4 are also called lower layers, and define a transmission function.
To layer 7 are also referred to as upper layers and define communication processing functions.

Next, the function of each layer will be briefly described. First, the physical layer defines the electrical and physical control means of the line. Next, the data link layer defines data transfer between two adjacent systems and control means for transmission errors. The network layer relays data via one or a plurality of communication networks to define data transfer means between systems in which users exist. The transport layer defines transparent two-way simultaneous transfer means for data between terminals without being involved in the route selection or the relay function. The session layer configures the conversation and defines the means for synchronizing and managing data exchange. The presentation layer performs input, exchange, display, and control of structured data, and defines functions related to an information expression format common to application protocols. The application layer defines application protocols for management and for users.

Next, the operation of this embodiment at the layer 2 level will be described.

(1) When there is an incoming call from the ISDN network side: First, the D channel information sent via the S / T interface 7 is sent to the data link means 6.
In the data link means 6, the protocol processing of the layer 2 is performed, and the result is sent to the control means 8. When the control means 8 receives the incoming call information, it activates the call signal generating means 9. When activated, the call signal generating means 9 generates a call signal, and sends the call signal to the first telephone subscriber circuit 2 or the second telephone subscriber circuit 3 according to an instruction of the control means 8.

(2) When calling from an analog terminal connected to port 1 or port 2;
Activates the tone generator 5. When activated, the tone generating means 5 sends out a tone to the first telephone subscriber circuit 2 or the second telephone subscriber circuit 3 according to an instruction from the control means 8. The PB signal receiving means 4 receives the PB signal sent from the analog terminal and sends the result to the data link means 6. The data link means 6 performs the protocol processing of the layer 2 and transmits the D channel information to the S / T
Send it to the interface 7.

As described above, port 1 or port 2
Is set between the analog terminal connected to the ISDN network and the ISDN network.

Next, a method of outputting billing information will be described. First, the D channel information sent from the network at the end of the call is input to the data link means 6 via the S / T interface 7. In the data link unit 6, the D channel information is subjected to protocol processing, billing information is generated, and output to the control unit 8. The control means 8 stores the sent accounting information. After the call is finished, a billing information output trigger signal is generated by hooking of the user,
Output to the control means 8. When the control means 8 receives the charging information output trigger signal, the control means 8 controls the voice synthesizing means 9 according to the stored charging information, for example, a synthesizing such as "the current call charge was 150 yen". Audio to the analog terminal connected to ports 1 and 2.
Output to reach .

The means for generating the billing information output trigger signal is not limited to the one shown in this embodiment.

In this embodiment, the audio output of only the billing information is described. However, the content of the audio output is not limited to the billing information, and the other party, the talk time, and other messages are output as voice. It is also possible.

[0026]

As described above, according to the present invention, the billing information can be output in voice because the voice synthesizing means controlled by the control means is provided. For this reason, a superior ISDN that can immediately transmit a message such as billing information to a user located at a place away from the ISDN terminal adapter.
A terminal adapter can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram showing a conventional example.

[Description of Signs] 1 Voice synthesis means 2 First telephone subscriber circuit 3 Second telephone subscriber circuit 4 PB signal receiving means 5 Tone generating means 6 Data link means 7 S / T interface 8 Control means 9 Call signal generation means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 15/00-15/38 H04L 12/14 H04M 11/00-11/10

Claims (1)

(57) [Claims] 1. An S / T interface for interfacing a telephone subscriber circuit with an S / T bus of an ISDN network; a call signal generating means for transmitting a call signal to a corresponding telephone subscriber circuit upon reception; Tone generating means for transmitting a tone signal to a telephone subscriber circuit to be transmitted, PB signal receiving means for receiving a PB signal on a B channel transmitted from an analog terminal of the telephone subscriber circuit, and a network side through an S / T interface a data link unit for performing protocol processing of D channel information transmitted from the subscriber circuit, PB signal receiving means and the call on the basis of information from the data link means signal generating means and the tone generating means and the data link means and control means for controlling is provided, the collector of the message information in response to an instruction from the control unit
ISD characterized by comprising voice synthesis means for outputting voice to reach an analog terminal of a talk subscriber circuit.
N terminal adapter.