JPH03220960A - Line connection processing system between terminal equipments - Google Patents

Abstract

PURPOSE:To connect a line between a sender terminal equipment and a receiver terminal equipment automatically as soon as the busy receiver terminal equipment is idle by applying redial processing automatically only when the reason of an incomplete call is user-busy by a busy state callback (CCBS) service. CONSTITUTION:When non-connection reason information to be noticed by a check processing of a non-connection reason check means 12 indicates user busy information, a service request means 13 publicates a service request of a CCBS service automatically to a line exchange network 2. Upon the receipt of an idle notice from the line exchange network 2 in response to the CCBS service request, a reconnection processing request means 14 requests the reconnection processing request to a receiver side terminal equipment 16 not in connection to a connection processing execution means 11 automatically. Thus, as soon as the receiver side terminal equipment 1b is idle, the connection with the receiver side terminal equipment 1b is implemented automatically.

Description

[Detailed Description of the Invention] [Summary] Regarding a line connection processing method between terminals for connecting a line between a sending terminal and a receiving terminal, as soon as the receiving terminal becomes free for use. , the purpose is to automatically connect the line between the sending terminal and the receiving terminal, and when the sending terminal cannot connect the line with the receiving terminal, the circuit switching Non-connection reason checking means for checking whether non-connection reason information notified from the network indicates user busy information; and a condition that this non-connection reason checking means detects display of user busy information. and a service requesting means for making a busy callback service request to the circuit-switched network; and reconnection processing requesting means for requesting reconnection processing to the received terminal.

(Industrial Application Field) The present invention relates to a line connection processing method between terminals for connecting a line between a transmitting terminal and a receiving terminal, and in particular, the present invention relates to a line connection processing method between terminals for connecting a line between a transmitting terminal and a receiving terminal. This invention relates to a line connection processing method between terminals that automatically connects a line between a sending terminal and a receiving terminal as soon as possible.

When l5DN is put into practical use, CCB S (Complete
tion of Calls to Busy 5ub
Scriber, call back when busy j) The service will be provided. This CCB5 service is available when the caller is using the other party's phone when making a voice call.
Once registered, the caller will be notified of a free call as soon as the other party's phone becomes free, and this CCB'S
By using the service, the caller will be able to call again as soon as the other party's phone becomes free. It is necessary to make effective use of such CCB5 services and to devise means to make it possible to talk to the other party's telephone with fewer operating procedures.

[Conventional technology]

When the receiving terminal is busy on a call, the line between the transmitting terminal and the receiving terminal is automatically connected.As used in facsimiles, etc., once a busy tone is received, the line is automatically connected to the transmitting terminal and the receiving terminal. There are devices that automatically connect the line to the receiving terminal that was in use by repeatedly redialing the line at regular intervals after disconnecting the line.

[Problem to be solved by the invention]

However, this conventional technique has a problem in that the redial operation is repeated regardless of the reason for the busy tone. In other words, the connection between the receiving terminal and the receiving terminal is not limited to the case that the receiving terminal is busy, but also even if the circuit switching network is congested, there is a failure in the circuit switching network, or for other reasons. There is a problem in that repeating the dust dialing operation when a connection cannot be established between the two terminals results in a meaningless repetition of the redialing operation. Another problem was that even if the receiving terminal ended a call and became free, a connection could not be established immediately.

From now on, it is possible to use the CCB5 service, but even when using this CCB5 service, if the line connection with the receiving terminal cannot be established, the CCB5 service will be uniformly requested. If we adopt a system in which the re-calling process is executed in response to the availability notification notified in response to this request, a meaningless re-calling process similar to the above-mentioned number-dial process will be executed. This is what will happen.

The present invention has been made in view of such circumstances, and includes C.
A line connection process between terminals that aims to make effective use of the CB5 service and enables line connection to the receiving terminal without executing wasteful re-calling processes and with fewer operating steps. The purpose is to provide a method.

[Means to solve the problem]

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

In the figure, 1a is a sending terminal, lb is a receiving terminal, 2 is a circuit switching network that can provide the incomplete call reason notification function and CCB5 service function, 3 is a line, and 11 is a connection provided by the sending terminal 1a. A processing execution means executes connection processing between the line exchange 1i12 and the receiving terminal 1b, and 12 is a non-connection reason checking means provided in the transmitting terminal 1a, which connects the receiving terminal 1b and 13 is a service request means provided in the transmitting terminal 1a, which checks whether the non-connection reason information notified from the circuit switching network 2 indicates user busy information when a connection cannot be established between the two terminals. 14 is a transmitting side that requests the CCB5 (busy call back) service to the circuit switching M42 on the condition that the disconnection reason check means 12 detects the display of user busy information. A reconnection requesting means included in the terminal 1a, which performs circuit switching in response to a service request from the service requesting means 13! 42, it requests the connection processing execution means 11 to reconnect to the disconnected receiving terminal 1b.

[Effect]

In the present invention, when connection processing with the receiving side terminal 1b cannot be realized, non-connection reason information is notified from the circuit switching network 2.
checks whether the notified non-connection reason information is displaying user busy information. Through the check process by this non-connection reason check process 12,
When the notified non-connection reason information indicates user busy information, the service requesting means 13 requests the circuit switching M
A service request for CCB5 service is automatically issued to 42. Then, the reconnection processing requesting means 14
Upon receiving the availability notification from the circuit switching network 2 in response to the B5 service request, it automatically requests the connection processing execution means 11 to reconnect to the disconnected receiving terminal 1b.

In this manner, according to the present invention, connection with the receiving terminal 1b is automatically established as soon as the receiving terminal 1b becomes available.

〔Example〕

Hereinafter, the present invention will be explained in detail according to examples.

FIG. 2 illustrates the system configuration of a communication system implementing the present invention. In the figure, 4a is a transmitting telephone that operates as an I5DN terminal, 4b is a receiving telephone that operates as an I5DN terminal, and 5 is a line termination device connected to the transmitting telephone 4a. The transmitting telephone 4a is a handset 41
, the message between the CPU 42 and the circuit switching network 2 (
a line control unit 43 that processes Layer 3 messages), a memory unit 44 that stores program means, etc. that executes automatic connection processing with the receiving side telephone 4b, and a display unit 45 that displays non-connection reason information on a display. , Hunt St. 4
1, a communication circuit section 4 that performs interface processing with
6.

The circuit switching network 2 constituting the I5DN network has a function of notifying the transmitting side telephone 4a of the reason for the non-connection in the case of an incomplete call. This notification of disconnection reason information will be performed according to prescribed numbers. In Figure 3,
A part of this non-connection reason information is illustrated. As shown in this figure, if the reason for the incomplete call is that the user is busy, “
17", and if the reason for the incomplete call is due to congestion in the circuit switching network 2, "42" is notified.
The circuit switching network 2 processes the non-connection reason information to be notified to the transmitting telephone set 4a in the form of a number.

Next, the processing contents of the present invention will be explained in detail according to the flowchart shown in FIG. 4, which is executed by the sending telephone 4a.

The transmitting side telephone 4a will start executing the connection process with the receiving side telephone 4b while passing on the layer 3 message to and from the circuit switching network 2.

With the execution of this connection process, the sending phone I! 4a is
As shown in step 1 of the flowchart in FIG. 4, when a layer 3 message regarding a disconnection signal is received from the circuit switched network 2, notifying that connection with the receiving telephone 4b cannot be established, in the following step 2, this message is sent. Detects the display value of disconnection reason information in the disconnection signal. If the disconnection reason information cannot be detected in the disconnection signal through this detection process, the process ends because the circuit switching network 2 does not have the function of an I5DN network.

On the other hand, if the non-connection reason information in the disconnection signal is detected in step 2, then in the following step 3, the non-connection reason information becomes "17" as explained in FIG. Determine whether user busy is displayed as the reason for the completed call. If it is determined in step 3 that the non-connection reason information is displaying "17", the process advances to step 4 and selects the automatic setting that instructs the receiving telephone 4b to automatically execute the re-calling process. Determine whether or not. If automatic setting is selected in step 4, then in step 5,
By executing the CCB5 automatic setting process, the receiving phone 11
4b.

That is, as shown in detail in FIG. 5, first, a service request is made to the circuit switching network 2 to request the provision of the CCB5 service.

When this CCB5 service request is made, circuit switching! i
12 is the receiving phone 4 that has been determined to be user busy;
When it enters the vacancy monitoring process of 4b and detects that the receiving side telephone 4b changes to the vacancy state according to this vacancy monitoring process,
The transmitting telephone 4a that is the source of the CCB5 service request
After issuing a free notification to the recipient phone 4,
Since the sending telephone 4a will enter a reservation process to prevent the telephone 4a from connecting with other telephones, when it receives this sent out notification of availability, it will switch the line! 42 to perform reconnection processing with the reserved receiving telephone 4b, the connection processing with the receiving telephone 4b is realized.

Step 7 When the connection process with the receiving side telephone 4b is realized according to the CCB5 automatic setting process in step 5, the sending side telephone 4
As shown in step 6 of the flowchart in FIG. The content of the message of the received reason information (when it comes via step 5, the user is busy) is specified, and in the subsequent step 7, the specified message is displayed on the display unit 45, and the process ends.

Then, when the sending phone 4a determines in step 3 that the non-connection reason information does not display "17", and when it determines in step 4 that automatic setting is not selected, it immediately proceeds to step 6. Next, the content of the message of the non-connection reason information that has been notified is specified, and in the subsequent step 7, the specified message is displayed.

In this way, in the present invention, when the user presses the button, the CC
There is no need to perform manual operations such as requesting the provision of B5 service, checking the availability notification from the circuit switching network 2 according to the ringer sound, and requesting reconnection processing by pressing a button.
Receiving phone 4 disconnected due to user busy state
This makes it possible to automatically establish a connection with b.

Although the illustrated embodiment has been described, the present invention is not limited thereto. For example, although the present invention has been described using a telephone in the embodiments, the present invention is not limited to this and may be applied to other terminals.

〔Effect of the invention〕

As explained above, according to the present invention, since the CCB5 service is configured to automatically perform re-call processing only when the reason for an incomplete call is that the user is busy, unnecessary re-call processing can be avoided. This makes it possible to establish a line connection between a sending terminal and a receiving terminal without having to perform the above steps.

[Brief explanation of drawings]

Figure 1 is a diagram of the principle configuration of the present invention, Figure 2 is a system configuration diagram of a communication system implementing the present invention, Figure 3 is an explanatory diagram of non-connection reason information notified by the circuit switching network, and Figure 4 is transmission. Flowchart Executed by the Side Telephone FIG. 5 is a detailed explanatory diagram of the process of step 5 in the flowchart of FIG. In the figure, 1a is a transmitting side terminal, 1b is a receiving side terminal, 2 is a circuit switching network, 3 is a line, 4a is a transmitting side telephone, 4b is a receiving side telephone, 5 is a line termination device, 11 is a connection processing execution means, 1
2 is a non-connection reason checking means, 13 is a service requesting means, 14 is a reconnection processing requesting means, 41 is a handset, 4
2 is a CPU, 43 is a line control section, 44 is a memory section, 45
Reference numeral 46 indicates a display section, and 46 indicates a communication circuit section. 2 (I say! 11 Telephone Noku゛ U〔line Tb Phrogityat Figure 4

Claims (1)

[Claims] An inter-terminal line connection processing method for connecting a line between a transmitting terminal (1a) and a receiving terminal (1b), wherein the transmitting terminal (1a) is connected to the receiving terminal Non-connection reason check that checks whether the non-connection reason information notified from the circuit switching network (2) indicates user busy information when the line connection with the terminal (1b) cannot be established. means (12); and a circuit switched network (2), provided that the non-connection reason checking means (12) detects an indication of user busy information.
a service requesting means (13) for requesting a call-back service when a call is busy; and a service requesting means (13) for requesting a call-back service when a call is busy; , and reconnection request means (14) for requesting reconnection processing to the disconnected receiving terminal (1b).