JPH0371767A - Call waiting system - Google Patents

Abstract

PURPOSE:To prevent a terminal equipment for awaiting a call waiting reply from being kept waiting for a long time by transferring a call to a 4th terminal equipment stored in a storage means when a call waiting reply of a 1st terminal equipment till a count means counts a prescribed time. CONSTITUTION:Till a count means 3 counts a prescribed time, when a reply of a call waiting of a 1st terminal equipment A does not exist, a call is transferred to a 4th terminal equipment D stored in a storage means 2. That is, when a call from a caller extension (3rd terminal equipment C) is set to the call waiting state and the operation (reply of call waiting) of hooking or the like of a call extension (1st terminal equipment C) does not exist for a prescribed time, a call is transferred to a transfer destination extension (4th terminal equipment D) automatically and when the transmission destination extension replies, the talking with the caller extension telephone set is attained. Thus, it is prevented that the terminal equipment of call waiting reply is kept waiting for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a call waiting system in an automatic switching system.

(B) Conventional Technology Conventionally, some automatic switching machines have been equipped with a call waiting function. The call waiting function is used when the first terminal (called extension) is already on a call with the second terminal.
When a third terminal (calling extension) receives a call, the called extension hears a call waiting ringtone to notify the caller of the incoming call from the calling extension, while the calling extension hears a ringtone. After that, if an operation such as hooking of the called extension is detected, the second terminal that is currently talking to the called extension is put on hold and a call is made between the called extension and the calling extension.

(C) Problems to be Solved by the Invention] - If the called extension is conducting an important call when a call arrives, the called extension does not necessarily have to perform hooking or other operations to communicate with the calling extension. There is a problem in that the calling extension is kept waiting for a long time.

(d) Means for Solving the Problems The present invention provides a timer that starts timing when a call from a third terminal that arrives at a first terminal that is currently on the phone with a second terminal is placed in a call waiting state. and storage means for storing a fourth terminal to which the first terminal is transferred; This is a call waiting method characterized in that the call is transferred to a fourth terminal stored in the storage means.

(E) Effects According to the present invention, when a call from a calling extension (third terminal) is set to a call waiting state, an operation such as hooking of the called extension (first terminal) (response to call waiting) ) is off for a certain period of time, the call is automatically transferred to the transfer destination extension (fourth terminal), and if the transfer destination extension answers, the call is made to the calling extension.

(F) Embodiment An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a block diagram of an automatic switchboard for explaining an embodiment of the call waiting method of the present invention, and FIG. 2 is a flowchart of an embodiment of the call waiting method of the present invention.

In Fig. 1, (1) is a control section (CC) that controls each section.
), (2) is a transfer memory (storage means; MEM) that stores the forwarding destination extension (fourth terminal), (3) is a timer (timekeeping means; TIM) that measures time, and (4) is a call waiting incoming call. The tone transmitter (TNT) transmits tones, ring tones, hold tones, etc., and the paging unit (IR
).

Next, the operation will be explained based on the flowchart shown in FIG.

In step S1, the extension (first terminal) (A) and the extension (second terminal) (B) are in communication. However, extension (
A) is already MEM by dialing the service special number etc.
It is assumed that the transfer destination extension (D) is registered in (2).

At this time, if there is an incoming call from extension (3rd terminal) (C) to extension (A), the process goes to step S2, and CC (1) connects TNT (4) to extension (A) and extension (C). Extension (A)
A call waiting ring tone is heard for the extension (C), a ring tone is heard for the extension (C), and TIM (3) is started to time the call waiting ring time.

In such a state, if extension (A) makes a call waiting response such as hooking, normal call waiting occurs in steps S3 and 5, but no operation such as tsuyu king is performed, and TIM (3) remains constant. After counting the time, CC (1) returns the extensions (A) and (B) to the busy state of step S1, returns the one-way line (C) to the state of step S4, and returns the MESi to the busy state of step S1. Call the forwarding destination extension (D) stored in (2) using IR (, )), and if the forwarding destination extension (D) responds, a call is made between the extension (C) and the forwarding destination extension (D) in step S5. let

In this embodiment, the second and third terminals have been described as extension lines, but they may also be external lines.

(G) Effects of the Invention As is clear from the explanation below, the present invention can avoid a situation in which a terminal waiting for a call waiting response is forced to wait for a long time.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an automatic exchange for explaining one embodiment of the present invention, and FIG. 2 is a flowchart of one embodiment of the present invention.

Claims (1)

[Scope of Claims] 1. A timer that starts timekeeping when a call from a third terminal that arrives at a first terminal that is in conversation with a second terminal is set to a call waiting state; storage means for storing a fourth terminal to which the terminal is transferred, and if there is no call waiting response from the first terminal by the time the clocking means measures a predetermined time, the call is stored in the storage means. A call waiting method is characterized in that the call is transferred to a fourth terminal stored in the call waiting system.