JPH05304572A - Caller communication equipment in isdn network - Google Patents

Abstract

PURPOSE:To always utilize a caller terminal equipment effectively by informing a waiting period of time till succeeding communication connection to the caller when communication is rejected on a called party side so as to avoid wasteful communication waiting. CONSTITUTION:A data protocol controller 14 processes data including priority of a called terminal equipment and a predicted period of time or the like for succeeding communication connection to the called terminal equipment in the case of data communication with various terminal equipments. In the case of data communication with a main control unit, a gate array 15 reads out the data corresponding to the unit from a RAM 16 corresponding to the gate array and permits the communication. An interface controller 17 is connected after permission by communicating with other terminal equipment via a digital line terminator and an ISDN network. In the constitution, a receiving terminal equipment transmits a succeeding available predicted time obtained from a communication data end predicted time used at present to a caller terminal equipment as re-dial request data, whose communication is rejected after the communication rejection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, card inquiry,
The present invention relates to a call communication device of an ISDN (Integrated Digital Communication Service) network used for data communication such as log transmission, file update, and program maintenance. More specifically, it is an ISD capable of efficiently communicating between terminals.
The present invention relates to a call communication device of N network.

[0002]

2. Description of the Related Art Generally, an ISDN communication device is shown in FIG.
As shown in FIG. 3, the calling signal output from the calling terminal 71 is sent to the DSU (digital line terminating device) 72, 74 and I
Specific receiving terminal 75a of the call destination via the SDN network 73
~ 75h, and when this receiving terminal receives a call-out signal, it outputs a call-in signal to output both terminals 71, 75a-7.
Communication is connected for 5 hours.

A communication system between terminals using this ISDN network is defined in a prescribed format. For example, as shown in an explanatory diagram of the communication system in FIG. 8, when a calling terminal outputs a calling signal. First, as a pre-process of communication connection, a call setting is transmitted, and when this call setting reaches the receiving terminal side (communication step n41), this receiving terminal side accepts the call setting, and calls. A reply is sent back (communication steps n42 to n44), and the return response is confirmed based on the reply to establish a communication connection between both terminals (communication steps n45 to n46).

After the end of the communication, as a post-processing of the communication connection, the fact that the communication is disconnected is returned to the originating terminal, and based on this, a return release signal is transmitted to the receiving terminal, and the receiving terminal completes the release. This is returned to the originating terminal and one communication transaction is completed (communication steps n47 to n49).

At this time, if the receiving terminal of the called party cannot accept the calling signal for some reason and rejects the incoming call, the calling signal is repeatedly received from the calling terminal at regular intervals until acceptance is accepted. There is a known re-call output method in which a re-call is output to a machine and communication connection is performed.

However, in this re-call output method, since the incoming call response time cannot be predicted, the output is held even if communication with the call destination is impossible, and the calling terminal can be effectively used for other tasks. However, there is a problem that the operating rate is lowered.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, when a call is rejected by the callee, the caller is notified of the waiting time until the next communication connection is made, and the useless communication waiting is eliminated. IS that always used the sending terminal effectively
An object is to provide a calling communication device for a DN network.

[0008]

According to the present invention, a calling signal output from a calling terminal is transmitted to a called receiving terminal via an ISDN network, and the receiving terminal receives the calling signal. At this time, a calling communication device of an ISDN network that outputs an incoming call signal and connects both terminals for communication connection, and when the outgoing call signal output from the above outgoing terminal is transmitted, this outgoing call signal is received by the receiving terminal. A priority output means for outputting an incoming call priority that is called and called, and an estimated time output means for outputting an estimated communication use time after communication connection in which both terminals are connected by communication,
When a call origination request is made from the callee side to the caller side, a call recall requesting means for requesting the call recalling in the order of higher priority calling is provided after the expected time has elapsed.

[0009]

According to the present invention, when the calling signal sent from the calling terminal is rejected by the receiving terminal, the re-call requesting means estimates the expected time until the next communication connection. The call-out destination having a high priority is obtained from the output means, and the call-out destination having a high priority is obtained from the priority output means. When the expected time has elapsed, the re-call request is output in the order of the call having a high priority.

[0010]

As described above, when an incoming call is rejected, the waiting time until the next communication connection is made can be predicted, so that the calling terminal can be effectively utilized for other business during this waiting time. As a result, planned use of the sending terminal can be achieved, and the sending terminal does not need to wait for communication. Further, since the call destinations are given priority and communication connections are made in the order of high priority, a plurality of call destinations can be received in an orderly and fair manner.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a block diagram of a control circuit of a terminal used in a call communication device of an ISDN network.
Each circuit device is controlled in accordance with the program stored in the OM 12, and the control data is stored in the RAM 13 so as to be readable.

The data protocol controller 14 processes data such as the priority of the called terminal and the estimated time until the next communication connection with the called terminal during data communication with various terminals.

When communicating data with the main control unit, the gate array 15 reads the data corresponding to this unit from the RAM 16 corresponding to the gate array and permits the communication.

The interface controller 17 is allowed to communicate with other terminals through the above-mentioned DSU and ISDN network and is connected.

FIG. 2 shows the communication state when the call communication device of the ISDN network rejects the incoming call. Now, when the calling terminal outputs a calling signal to the receiving terminal, data is transmitted as a pre-process for communication connection. The call setting including the estimated communication usage time required for communicating the contents is transmitted to the receiving terminal (communication step n1), and when the receiving terminal accepts this call setting, the receiving terminal side makes another calling terminal. If the call is being communicated with the mobile device, the call is rejected, data that cannot be communicated is sent back to the calling terminal together with the call setting acceptance signal (communication step n2), and the communication disconnection is returned based on the call rejection. Then, the calling terminal sends a return release signal to the receiving terminal, and the receiving terminal returns to the calling terminal that the releasing is completed (communication steps n3 to n5).

Then, after refusing the communication from the receiving terminal side,
The next use start prediction time, which is obtained from the communication data end prediction time currently in use, is sent to the call originator terminal of the call destination that rejected the communication as call recall request data (communication step n6), and this call recall request is sent. The calling terminal accepts the data, stores and sets the next optimum re-call data, and the calling terminal returns a return call setting acceptance (communication step n).
7).

Following this reply, when a reply indicating that the communication is disconnected is sent back to the receiving terminal, the receiving terminal sends a return release signal to the calling terminal, and the calling terminal sends back to the receiving terminal that the release is completed. Then, the communication when the incoming call is rejected is completed, and the next communication transaction is prepared (communication steps n8 to n10).

FIG. 3 shows sub-address information at the time of communication, which is transmitted together with the call setting. This sub-address information is included in each call setting message, and one calling terminal side has calling sub-address information 31 and the other calling terminal. The receiving terminal side of (1) is communicated with destination sub-address information 32.

The calling sub-address information 31 has a data area that can be arbitrarily set by the user in the call setting message. For example, the 20-byte data area has the incoming call priority, the expected communication usage time, and the outgoing call. The ID and the calling sub-address type are shared and set, and this data is transmitted as call setting sub-data.

The called sub-address information 32 is constructed in the same manner as the calling sub-address information 31 described above, and in the 20-byte data area, the called priority and the re-call waiting time,
Calling ID and destination sub-address type are shared and set,
This data is transmitted as call setup sub-data.

In this case, the priority is increased in proportion to the number of recalled calls, and the priority is processed in the order of the most recalled calls. The correspondence at this time is confirmed by collating the calling ID.

The types of data processing performed by the transmitting terminal and the expected communication use time for each type are various processing such as card inquiry 5 seconds, log transmission 3 seconds, file update 20 seconds, program maintenance 600 seconds. Data of different types are transmitted at different times.

The calling operation of the calling communication device of the ISDN network configured as described above will be described with reference to the flowchart of FIG. Now, when transmitting data from the calling terminal to the receiving terminal of the call destination, prior to this data transmission, after the user selects the type of data transmission, the input set and edit set of that data are applied, and the priority is set. The area is initially set (steps n11 to n14).

Subsequently, the expected communication use time of the selected type is set and a call is made to the receiving terminal side (step n15).
~ N16).

When this calling signal that is called is received by the receiving terminal of the calling destination through the ISDN network, an incoming signal is output and both terminals are connected for communication, and the calling terminal Type data is transferred. After the transfer is completed, one communication is considered to be completed and the communication is cut off to prepare for the next data communication (steps n17 to n19).

However, when the call signal is rejected by the receiving terminal, the call destination address, the call ID, and the recall data of the transmission data are recorded to prepare for the recall, and the priority area is set. It is stored in a state where the priority is slightly increased by adding +1 (step n20).

Next, the call receiving operation of the calling communication device of the ISDN network will be described with reference to the flowchart of FIG. now,
When the receiving terminal outputs the incoming call signal, if this incoming call signal is a re-calling instruction for notifying the waiting time on the calling terminal side (steps n21 to n22), the priority is reset and the re-calling request is made. The data is transmitted to the call destination, and the data is set to communicate with the call destination after the expiration of the re-call request data (steps n23 to n24).

On the other hand, if the receiving terminal can communicate at the time of requesting a normal incoming call signal, the incoming call is accepted, the response is confirmed, the two terminals are connected by communication to transfer data, and after this transfer is completed. Disconnects communication and ends one communication transaction (step n25-
n26).

By the way, if the communication is rejected because the communication is being processed at the time of requesting a normal incoming signal, the priority of the outgoing sub-address information is high and the incoming processing cannot be started unless the current communication processing is interrupted. In the case of priority data communication, the current communication process is interrupted, the high priority data is interrupted, and the data process is executed (steps n27 to n).
28).

On the other hand, when the communication is rejected in the state of not having the high priority, the priority +1 is added to the destination sub-address information to reset the priority, and the waiting time corresponding to each data communication type is set. To set the timer. In this case, for types such as card inquiries, log transmissions, file updates, etc. that complete communication in a short time, set a waiting time until the current communication processing is completed and require long communication such as program maintenance. For the type, a maintenance reservation is made to allocate an unassigned time after the business end time (steps n29 to n30).

Next, the timer monitoring operation of the calling communication device of the ISDN network will be described with reference to the flowchart of FIG. Now, when the recalling timer of the originating terminal times out, this originating terminal outputs a recalling signal to the receiving terminal side because of the arrival of the recalling request time (steps n31 to n).
32).

If there is a response confirmation when the call is reissued, the two terminals are connected by communication to transfer the corresponding type of data, and after the transfer is completed, the communication is terminated and the communication is cut off.
Further, the recall data is cleared to prepare for the next data communication (steps n33 to n36).

However, if there is no confirmation of the response of the recalling signal, it is judged that the incoming call is rejected by the receiving terminal again, and +1 is added to the priority area to raise the priority further than the current state, and the recalling call continues. In preparation, the timer is reset (step n37).

As described above, when an incoming call is rejected, the waiting time until the next communication connection can be predicted, so that the calling terminal can be effectively utilized for other work during this waiting time. The calling terminal can be used in a planned manner, and the calling terminal can avoid unnecessary communication waiting. Further, since the call destinations are given priority and communication connections are made in the order of high priority, a plurality of call destinations can be received in an orderly and fair manner.

[Brief description of drawings]

FIG. 1 is a block diagram of a control circuit of a terminal used in a call communication device of an ISDN network according to the present invention.

FIG. 2 is an explanatory diagram showing a communication state when an incoming call is rejected according to the present invention.

FIG. 3 is an explanatory diagram showing sub-address information at the time of communication according to the present invention.

FIG. 4 is a flowchart showing a calling operation of the calling communication device of the ISDN network of the present invention.

FIG. 5 is a flowchart showing an incoming call operation of the calling communication device of the ISDN network of the present invention.

FIG. 6 is a flowchart showing a timer monitoring operation of the calling communication device of the ISDN network of the present invention.

FIG. 7 is a schematic configuration diagram of a conventional call communication device of an ISDN network.

FIG. 8 is an explanatory diagram showing a communication state of a conventional call communication device of an ISDN network.

[Explanation of symbols]

 11 ... CPU 14 ... Data protocol controller 31 ... Originating sub-address information 32 ... Destination sub-address information

Claims (1)

[Claims] 1. A calling signal output from a calling terminal is ISD.
A calling communication device of an ISDN network that transmits to a receiving terminal of a call destination via an N network, and when the receiving terminal receives a calling signal, outputs an incoming call signal to establish a communication connection between both terminals. When transmitting the calling signal output from the calling terminal, the calling signal is received by the receiving terminal and the priority output means for outputting the incoming call priority to be called is displayed between the two terminals. Estimated time output means for outputting the expected communication usage time after communication connection is established, and when a call origination request is issued from the called side to the calling side, after the expected time has elapsed, the recall requests are made in the order of higher priority calling. A call communication device for an ISDN network, which comprises a re-call requesting means.