JP2804490B2 - Communication management device for ISDN terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an integrated services digital network (ISDN).
The present invention relates to an ISDN terminal communication management device that manages communication of various terminal devices used in ork).

[Prior Art] In recent years, the construction of ISDN has been promoted in various countries. In April 1988, the commercialization of a circuit switching service using a basic user-network interface has started in Japan.

In the basic interface of ISDN, a network terminating device is connected to a subscriber line corresponding to a subscriber number, and a point-to-point wiring for connecting terminal devices one by one to a home bus drawn from the network terminating device; It is possible to connect buses to each other.

As in the ordinary telephone network, when each terminal device communicates, the communication fee in ISDN is charged in accordance with the subscriber number according to the communication destination area and the communication time.

By the way, in a facsimile apparatus used in a normal telephone network, each time a facsimile communication is executed, a transmission date and time and a communication destination are stored, while a communication destination area is determined and a communication time is measured to calculate a communication charge. What is provided with a function of outputting such information as a management report at a desired time is well known.

[Problems to be Solved by the Invention] However, when the bus wiring is performed by ISDN, a plurality of terminal devices are provided corresponding to one subscriber number. For this reason, in the method of performing communication management for each terminal as in the facsimile apparatus, the subscriber cannot manage the communication of all terminals. Conventionally, no device has been provided for performing such communication management of all terminals.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a communication management device for an ISDN terminal in which a subscriber can manage communication of all terminals.

[Means for Solving the Problems] For this reason, the present invention relates to a communication management apparatus for an ISDN terminal connected between a network terminating apparatus providing a user network interface in ISDN and a plurality of terminal apparatuses. Signal detection means for detecting a data signal transmitted / received via the network terminating device, communication history information including terminal attributes specified at the time of communication with respect to each terminal device, and communication fee from the data signal detected by the signal detection means. A storage unit for extracting and storing the communication history information and the communication charge stored in the storage unit, and outputting a terminal attribute and a communication charge designated at the time of communication for each communication terminal and visually outputting the communication management report. Means are provided.

[Operation] With this, the communication charge and communication history of each terminal connected to one subscriber line can be grasped, and the subscriber can manage the communication of all terminals.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows an apparatus configuration diagram of a customer premises equipment using ISDN according to one embodiment of the present invention. In the figure, a network terminating device NT is connected to an ISDN subscriber line, and various terminal devices TE are connected to a home bus of the network terminating device NT via a communication management device 1. Here, the above-mentioned home bus is a basic interface in the user / network interface, and the network terminating device NT of the communication management device 1 is at point S, and the terminal device TE thereof is at point T.

FIG. 2 shows a block diagram of the communication management device 1. In the figure, the signal line between the network termination device NT and the terminal device TE has a transmission side TX from the terminal device TE to the network termination device NT and a reception side RX from the network termination device NT to the terminal device TE. I have. Then, the transmission side TX and the receiving side RX, respectively, two signal lines TX ₊ and TX _-, signal lines RX ₊ and RX _- is composed of.

On the signal line TX ₊ , a Hall element 11 for detecting a signal current in an insulated state with respect to the signal line is provided. The detection signal is input to an amplifier 12, and the output thereof is connected to a transformer.
The signal is input to the signal receiving unit 14 via the input terminal 13.

Further, the same Hall element 15 as described above is provided on the signal line RX ₊ , and its detection signal is input to the amplifier 16, and its output is input to the signal receiving unit 18 via the transformer 17. The signal receiving unit 14 and the signal receiving unit 18 read various signals transmitted on the transmission side TX or the reception side RX.

The operation display unit 19 displays the operation states of various terminals by lamps, and includes emission diodes L1 to L3 for indicating that the layers 1 to 3 are in operation, and emission diodes T1 to T8 for indicating that each terminal is in operation. It is arranged. The LED driver 19a drives each of the emitting diodes. The printer 20 outputs a communication management report indicating a communication history, and the printer control unit 21 controls the printer 20.

The CPU 22 performs various calculations and controls each unit according to a control program stored in the ROM 23. RA
The M24 stores communication history information while storing data necessary for the calculation and control.

The operation unit 25 is used by an operator to perform various operations on the apparatus.

The CPU bus 26 includes the signal receiving units 14 and 18, the operation display unit 19,
Printer control unit 21, CPU 22, ROM23, RAM24 and operation unit 25
This is a signal line for transferring various data between the two.

In the above configuration, when each terminal device TE makes a call, as shown in FIG. 3 (a), necessary information such as a call destination is set in a call setup message "SETUP" and transmitted to the network terminating device NT side. And make a call. As a result, when a call is received at the destination and the destination terminal responds, a response message “CONN” is returned from the network terminating device NT. Here, predetermined communication on the B channel is performed. When this call is completed and the caller disconnects the call, a disconnection message “DISC” is sent. Then, the release message “REL” is returned. After that, by sending the release completion message "REL COMP",
The communication operation is completed.

In NTT's ISDN, charge notification information is set in the disconnection message "DISC", whereby the communication charge is notified from the network.

On the other hand, when the other party disconnects the call, a disconnection message “DISC” is transmitted as shown in FIG. In this case, the release message “REL” is transmitted, and then the release completion message “REL COMP” is received, and the communication operation is completed. In this case, the communication fee is notified from the network by the release message “REL”.

FIG. 4 shows the network termination device NT and the terminal device TE
3 shows a frame configuration of a signal transmitted on a signal line between the frames. As shown in FIG. 2A, the signal on the transmitting side TX includes a bit F for frame synchronization, a bit L for DC balance, bits B ₁ and B ₂ for B channel, a bit D for D channel, and auxiliary frame bit F _A is configured to be arranged at a fixed format.

Further, the receiving side RX, as shown in FIG. (B), in addition to the above, further D channel echo bits E, bit A to be used to start, bit N and inverts the F _A and multiframe, Bits M are arranged in a fixed format.

Various call control messages at the time of the communication include a D channel,
That is, it is transmitted by bit D. This transmission procedure
It is defined as a PD (Link Access Procedure on the D-channel), and the frame structure of the transmission data is composed of a flag sequence F, an address field A, a control field C, an information field I, as shown in FIG. And flag check sequence
This is an HDLC frame composed of FCS.

Then, in the LAPD, the above various call control messages are set and transmitted in the information field I defined as the information transfer frame I in the control field C.

The signal receiving units 14 and 18 take out each field information of the HDLC frame. Then, based on the extracted data, the CPU 22 performs a predetermined communication management process such as displaying the operation state of the terminal device TE and managing the communication history.

Note that the basic interface of this user / network interface uses two information channels B1 and B2,
Since simultaneous communication of two terminal devices TE is possible, when two terminal devices operate, the communication management process is executed in parallel corresponding to each of the two terminal devices.

FIG. 5 shows the operation of the communication management process.
Now, assuming that any one of the terminal devices TE makes a call, a call setup message “SETUP” is sent to the transmitting side TX of the information line.
Is sent.

As shown in FIG. 6 (a), the call setup message "SETUP" is composed of a common part and an individual part, like other various call control messages. Number "and" Message Type ". The call setup message “SETUP” is indicated by its “message type”. The individual units include “transmission capability”, “calling number”, “calling subaddress”, “calling number”, “calling subaddress”, It is composed of “higher layer compatibility”, “lower layer compatibility”, and other information elements added as needed.

When the CPU 22 detects such a call setup message “SETUP” on the transmission side TX of the signal line (process 101), the “calling subaddress”, the “transmission capability”, the “calling number”, the “calling subaddress”, and the “high order” Each piece of information set in "layer consistency" or the like is read (process 102).

By the way, the “calling subaddress” is the subaddress of the terminal device TE of the caller, and the “calling number” and “calling subaddress” are the ISDN number and the subaddress of the other party. In addition, the “communication capability” and “higher layer consistency”
In addition to "circuit switching" and "packet switching", network service functions and terminal attributes are designated, such as "voice", "unrestricted digital", and "3.1k audio".

Next, the CPU 22 monitors the receiving side RX of the signal line (process 103). Then, a response message "CONN" is sent from the network.
Is received (Y in process 103), the light emitting diode Ti corresponding to the terminal device TE indicated by the read “source sub-address” is turned on to indicate that the terminal device is operating (process 104).

Next, the information channel B1 or B2 indicated by the channel identifier of the response message "CONN", the date and time at that time, the read information, that is, the operated terminal device TE, the communication destination ISDN number, The service functions and terminal attributes set for the network are stored as communication history information in the RAM 24 (process 105).

Thereafter, the receiving side RX of the signal line is further monitored (process 106).

During this time, the terminal device TE performs predetermined communication with the other party,
When the communication is completed, a disconnection message "DISC" or a release message "REL" is transmitted from the network.

In the ISDN of NTT, the disconnection message "DISC" or the release message "REL" includes, as shown in FIG.
Charge notification information is set in the individual part. CPU22
Receives any of these messages (Y in process 106), it determines whether or not the fee information exists (process 107). If there is charge information (Y in step 107), the charge information is read and the corresponding terminal device TE is read.
Is stored in addition to the above-mentioned communication history information (process 108).

Next, the corresponding issuing diode Ti is turned off to display the end of the terminal operation (step 109), and the call setting message “SET
The process returns to the detection of "UP" (to process 101).

On the other hand, if the terminal device TE calls the destination and the destination does not answer, the release completion message “REL COM
P "is returned. In this case (N in process 103), the process returns to the detection of the call setup message “SETUP” (process 101).
What).

By the above-described communication management process, each time the terminal device TE operates, the operation state is displayed and the communication history is stored.

When the operator wants to know the communication history, the operator performs a management report request operation on the operation unit 21 as shown in FIG. 7 (process 201).

As a result, the CPU 22 reads out the communication history information stored in the RAM 24 and performs predetermined information editing such as calculating the total communication fee for each communication (process 202). Then, based on the result, the communication management report is recorded and output from the printer 20 in a predetermined format. For example, each terminal device
For each TE, “telephone”, “G3 facsimile”,
Information channels B1 and B2 used other than "G4 facsimile"
In addition, the communication fee for each terminal device TE and the total communication fee for all terminal devices TE are recorded (step 20).
3).

On the other hand, the issuing diodes L1 to L3 indicate which layer operation each terminal device TE is executing.
The emitting diode L1 is turned on when detecting INFO4, which is a layer 1 signal, on the signal line, and turned off when detecting INFO0. Further, the light emitting diode L2 detects the SABME command which is a layer 2 signal at the transmission side TX,
Next, it lights when the receiving RX detects a UA command, while the transmitting TX detects a DISC command, and then the receiving RX
Turns off when UA command is detected by RX.

Furthermore, the emitting diode L3 is turned on when the response message “CONN” which is a layer 3 signal on the transmission side TX or the response confirmation message “CONN ACK” on the reception side RX is detected. Also, when the disconnection message “DISC” is detected by the transmitting side TX or the receiving side RX, the light is turned off. In this way, the operating state of each layer is displayed.

As described above, in the present embodiment, the communication charge and the communication history information are read and stored from among the information of the various call control messages transmitted between the network terminating device NT and each terminal device TE, and the communication management is performed as necessary. Output as a report. Thereby, communication management of all terminals for each subscriber can be performed.

In the above embodiment, the communication management of the calling terminal is performed.
By monitoring the received call setup message “SETUP” and the response confirmation message “CONN ACK” in the processes 101 and 102 in the figure and executing the same process, the communication can be similarly managed.

In addition, it is needless to say that any information transferred in various messages can be similarly managed as the communication history information, and the management report may be displayed as well as recorded.

[Effects of the Invention] As described above, according to the present invention, if a plurality of communication terminals have a plurality of functions, respectively, it is possible to know the communication state and the communication charge of each function specified for each terminal. The user can finely manage each communication terminal.

[Brief description of the drawings]

FIG. 1 is a block diagram of an ISDN subscriber premises equipment according to an embodiment of the present invention, FIG. 2 is a block diagram of a communication management device, and FIGS. 3 (a) and 3 (b) are terminal devices and a network. 4 is a sequence diagram showing a procedure for transmitting a call control message between terminating devices,
FIG. 5 is a diagram showing a frame configuration of a signal transmitted to a signal line between the two, FIG. 5 is an operation flowchart of a communication management process, FIG. 6 (a) is an information configuration diagram of a call setup message, and FIG. FIG. 7 is an operation flowchart of a communication management report output process of the release message and the disconnection message. 1 ... Communication management device, 11,15 ... Hall element, 12,16 ...
Amplifier, 13,17… Transformer, 14,18 …… Signal receiver, 19
... Operation display unit, 20 ... Printer, 21 ... Printer control unit, 22 ... CPU, 23 ... ROM, 24 ... RAM, 25 ... Operation unit, NT ... Network termination device, TE ... Terminal apparatus.

Claims (4)

(57) [Claims] A communication management apparatus for an ISDN terminal connected between a plurality of terminal devices and a network terminating device providing a user / network interface in ISDN, wherein each terminal device transmits and receives via the network terminating device. A signal detection unit that detects a data signal; a storage unit that extracts and stores communication history information and a communication charge including a terminal attribute specified at the time of communication for each terminal device from the data signal detected by the signal detection unit; ISDN characterized by comprising output means for reading communication history information and communication charges stored in a storage means, editing terminal attributes and communication charges specified at the time of communication for each communication terminal, and visually outputting them as a communication management report. Terminal communication management device. 2. The communication management apparatus for an ISDN terminal according to claim 1, further comprising an operation unit for instructing output of said management report. 3. The IS according to claim 1, wherein the terminal attribute includes an item for distinguishing between telephone and facsimile.
Communication management device for DN terminals. 4. The ISDN according to claim 1, wherein, when the plurality of terminal devices operate simultaneously, the communication history information and the communication charge extraction processing are executed in parallel corresponding to the communication history information and the communication charge, respectively. Terminal communication management device.