JPH02288759A - Multi-stage extension call tone transmission system - Google Patents

Abstract

PURPOSE:To urge early reply to an incoming call by changing a call tone in response to the elapsed time at the incoming call to an extension. CONSTITUTION:When an extension telephone set 1 makes a call and dials the number of an extension telephone set 3, a central controller 6 writes time information added with a predetermined time being an incoming time to a part of a storage device 7 corresponding to the allocated position of the extension telephone set 3, sends a ring back tone to the extension telephone set 1 and a 1st call tone to the extension telephone set 3 to monitor the extension telephone set 3. The system clock 8 is referred while the extension telephone set 3 is monitored and when the information is coincident with the time information written in the storage device 7 at the arrival of a call, a central controller 6 sends a 2nd call tone to the extension telephone set 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an extension ringing tone transmission system in an electronic automatic private branch exchange.

[Conventional technology]

Traditionally, in electronic automatic private branch exchanges, it was common for there to be one type of ringtone when an extension call was received, or different ringtones depending on whether the call was coming from an extension or a call from outside the local office, such as a central office line. there were.

[Problem to be solved by the invention]

In the conventional ringing system described above, when an extension call arrives, if there are multiple people in a position where they can answer the incoming extension,
Everyone assumes someone will answer, and the caller may be slow to answer, leaving the caller waiting for a long time.

Also, when multiple calls arrive at an empty place, the person who returns does not know which incoming call to answer first and answers at random, and the first call that arrives becomes one. There is a possibility that you will not receive a response until the end of the call.

[Means to solve the problem]

The multi-stage extension ringing tone transmission system of the present invention monitors the elapsed time from the time of arrival of an extension call, and changes the extension ringing tone in multiple stages according to this elapsed time and transmits it.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of a system for switching the ring tone in two stages according to an embodiment of the present invention. 1 is a calling side extension telephone, 2 is a subscriber circuit, 3 is a called side extension telephone, 4 is a subscriber circuit, 5 is a main switch, 6 is a central control unit, 7 is a storage device, and 8 is a system clock. . When extension telephone 1 makes a call and dials the number of extension telephone 3, central control unit 6
writes time information obtained by adding a predetermined period of time to the incoming call time to the part of the storage device 7 corresponding to the accommodation position of the extension telephone 3, and sends a calling back tone to the extension telephone 1 and a first ring tone to the extension telephone 3. Outgoing, extension telephone 3
monitor. While monitoring the extension telephone 3, the system clock 8 is referenced, and if the time information matches the time information written in the storage device 7 at the time of incoming call, the central control device 6 sends a second ring tone to the extension telephone 3. If the extension telephone 3 responds while transmitting the first ring tone or the second ring tone, the central control unit 6 deletes the time information regarding the extension telephone 3 from the storage device 7 and returns the ring tone currently being transmitted to the extension telephone 3. The ringback tone being sent to the extension telephone 1 is stopped, and a communication path of the main switch 5 between the extension telephone 1 and the extension telephone 3 is established. According to this, the extension telephone 1 and the extension telephone 3 communicate with each other.

In the embodiment described above, the ring tone is switched in two stages, but by adding a ring tone type side, it is also possible to switch the ring tone in more stages.

〔Effect of the invention〕

As described above, according to the present invention, by changing the ring tone depending on the time that has elapsed since the extension call was received, it is possible to prompt an early response to the incoming call. Further, even if there are multiple incoming calls, the call that has been kept waiting for a long time can be identified by the ringing tone, so it is possible to avoid a situation where the first incoming call is not answered until the end.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. 1...Calling side extension telephone, 2...Subscriber circuit, 3.
... Called side extension telephone, 4 ... Subscriber circuit, 5 ...
Main switch, 6... Central control device, 7... Storage device, 8... System clock.

Claims (1)

[Claims] A multi-stage extension ringing tone transmission system that monitors the elapsed time from the time an extension call is received, and transmits the extension ringing tone by changing it in multiple stages according to the elapsed time.