JPH02134053A - Communication equipment - Google Patents

Abstract

PURPOSE:To attain automatic interruption of a call by sending a call message while adding a user-user information element including absence information to the call message in the case of absence and notifying the absence of a called party at the caller side when the absence information is detected in the user-user information element added to the received call message. CONSTITUTION:An ISDN telephone set consists of a CPU 1 controlling the entire telephone system, a storage section 2 storing a control program and a data or the like, a key input section 3 entering a dial number of the like, a display section 4 displaying information or the like from a network, a handset 5, a communication control section 6 applying call control or the like and connecting to the ISDN, and a speaker 7 sounding an incoming tone or the like. In the case of absence of the called party, the user-user information element including absence information is added to the call message and the result is sent, and when the caller detects the absence information in the user-user information element added to the received call message, the absence of the called party is displayed on the display section 4. Thus, the call is interrupted automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device connected to ISDN.

[Prior Art] Conventionally, when a calling party receives a paging message and enters a paging state and does not receive a response message, the user waits for a certain period of time before disconnecting the call, or monitors a timer. The call was disconnected and recovered due to a timeout.

[Problem to be Solved by the Invention] However, in the conventional example described above, the call is disconnected and restored after the ringing state has continued for a certain period of time, so there is a drawback that the call must be kept on hold during that time. .

The present invention was made to solve the above problems, and
In the case of absence, a user-to-user information element containing absence information is added to the calling message and sent, and when the calling side detects absence information in the user-to-user information element accompanying the received calling message, it notifies the other party of the other party's absence. The purpose is to provide communication equipment.

Another object of the invention is to provide a communication device that disconnects and restores a call without waiting when absence information is detected.

[Means for Solving the Problems] In order to achieve the above object, a communication device of the present invention has the following configuration. That is, in response to receiving a call setup message notifying an incoming call from an 15DN, the communication device transmits a paging message accompanied by a user-to-user information element including absence information indicating an absence state, and inputs the absence information. an input means; a generation means for generating a user-user information element including the absence information when there is an input from the input means and a call is received from the 15DN; and a user-user information element accompanying the ejected message. and notification means for notifying the other party's absence when absence information is detected in the communication device.

Preferably, the present invention is characterized by comprising a control means for disconnecting and restoring the call without waiting when absence information is detected.

[Function] In the above configuration, if there is manpower for the absence information, l
When there is an incoming call from the 5DN, a user-to-user information element including absence information is generated and a paging message is sent. on the other hand,
When the receiving side of the message detects absence information in the user-to-user information element accompanying the message, it displays the presence of the other party and disconnects and restores the call without waiting.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

<Description of the device (Fig. 1)> Fig. 1 is a block diagram of the l5DN telephone iso of this embodiment, in which 1 is a CPU that controls the entire device, 2 is a storage section in which control programs, data, etc. are stored; 3 is a key input unit for inputting dial numbers etc., 4 is a display unit for displaying information etc. from the network, 5 is a handset, 6 is a communication control unit connected to the ISDN and performs call control etc., and 7 is a This is a speaker that plays ringtones, etc.

FIG. 2 is a layout diagram of the key input section 3, where 31 is an absent key and 32 is a ten-key pad.

FIG. 3 is a flowchart showing the processing at the time of incoming call in this embodiment.

FIG. 4 is a flowchart of the calling process on the calling side in this embodiment.

<Explanation of operation (Figures 3 and 4)> Hereinafter, according to the flowcharts shown in Figures 3 and 4,
The operation in this embodiment will be explained.

In step S31 shown in FIG. 3, when the CPUI receives an incoming call primitive from the communication control unit 7, the process proceeds to step S32, and in step S32, it examines each information element such as the called sub-address and transmission capability in the primitive. , check its consistency. As a result, if the compatibility does not match, the incoming call is rejected in step S37 and the process ends. On the other hand, if the consistency matches, it is checked in step S33 whether or not the absence key 31 shown in FIG. A user/user information element is generated using the code. However, if the absence key 31 is not pressed, step S35
The process proceeds to the next step, a ringtone is played from the speaker 6, and normal incoming call processing is performed. Then, in step 336, the call primitive is notified to the communication control unit 7, and the process is shifted to the call state.

On the other hand, when the calling side is notified of the call primitive by the communication control unit 6 in step S41 shown in FIG.
The CPU 1 advances the process to step S42 and checks whether there is a user/user information element in the primitive, and if there is not, the process advances to step S46. However, if there is, the process advances to step S43 to check the contents of the user/user information element, and if there is no predetermined code to notify of absence, a ring tone is output to the handset 5 in step S46. , transitions processing to normal calling state.

However, if absence information is detected in step S43, a display instruction indicating that the other party is absent is output to the display section 4 in step S44. Then, in step S45, a disconnection primitive is notified to the communication control unit 7, and the process proceeds to a call disconnection request.

As explained above, according to this embodiment, if the user is absent, the user-to-user information element including the absence information is added to the paging message and sent, and the calling side adds the user-to-user information that accompanies the received paging message. When absence information is detected in the element, the absence of the other party is displayed on the display and the call can be automatically disconnected.

[Effects of the Invention] As explained above, in the case of absence, a user-to-user information element including absence information is added to the paging message and sent, and the calling side adds the user-to-user information element to the received paging message. If absence information is detected in the caller, the other party's absence can be notified.

Furthermore, by detecting the absence information, there is an effect that the call can be disconnected and recovered without waiting for unnecessary time.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the ISDN telephone in this embodiment, Fig. 2 is a diagram illustrating the arrangement of the key input section in this embodiment, Fig. 3 is a flowchart when a call is received in this embodiment, and Fig. 4 is a flowchart when receiving a paging message in this embodiment. In the figure, 1...CPU, 2...Storage unit, 3...Key power unit, 4...Display unit, 5...Handset, 6...
...Communication control unit, 7...Speaker, 31...Absence key 32...Numeric keypad. Patent distributor Canon Co., Ltd.

Claims (2)

[Claims] (1) In response to receiving a call setup message from ISDN that notifies the user of an incoming call, the user
A communication device for transmitting a paging message with a user information element, the device comprising: input means for inputting the absence information; and, when there is an input from the input means, when a call is received from the ISDN, the communication device includes the absence information. A communication device comprising: generating means for generating a user-to-user information element; and notifying means for notifying the other party's absence when absence information is detected in the user-to-user information element accompanying the call message. (2) The communication device according to claim 1, further comprising a control unit that disconnects and restores the call without waiting when the absence information is detected.