JP2504487B2 - Recall method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a recall system in an electronic exchange,
In particular, it relates to a call recall method for a call answered by the station switched loop termination function.

(Prior Art) A station-switched loop termination (hereinafter, referred to as SSLT) function in an electronic exchange means a telephone number common to a plurality of telephones (this is referred to as an SSLT function telephone number or a first telephone number in the present invention). When a call arrives at that telephone number, an incoming signal is sent to a plurality of telephones to which the first telephone number is assigned, and when one telephone responds to the incoming call, another telephone can be called. It is a function.

By the way, an electronic exchange is usually equipped with a service of recalling (recalling) a previously answered telephone when a call that has been answered is transferred by the transfer service of the respondent and the transfer destination does not answer for a certain period of time. ing. For calls that arrive at the first telephone number, which is the telephone number for the SSLT function, the first telephone number is assigned to multiple telephones, so the telephone that responded earlier is determined from the received telephone number. Since it is not possible, at the time of recall, as in the case of the first incoming call, a method is adopted in which an incoming signal is sent to all the telephones to which the first telephone number is assigned.

However, in such a recall method, in many cases, the first responder and the responder at the time of the recall are different, so that the caller tells the new responder the name of the other party to call each time the call is answered. , There was the complexity of having to explain the situation.

(Problems to be Solved by the Invention) As described above, the conventional electronic exchange having the SSLT function has a problem that the serviceability to the caller at the time of recall is poor.

According to the present invention, a recall method is provided in which a call to a first telephone number, which is a telephone number of the SSLT function, can be recalled to a telephone that has previously answered, and the serviceability to the calling party is enhanced. The purpose is to provide.

[Structure of the Invention] (Means for Solving Problems) The present invention assigns a common first telephone number to a plurality of telephones, and when the first telephone number is received, the first telephone number is received. Send an incoming signal to multiple phones assigned to
When one telephone responds to the incoming call, the second telephone number which is different for each of the plurality of telephones to which the first telephone number is assigned in the electronic exchange that enables the one telephone to call another telephone And storing a second telephone number assigned to the one telephone when the one telephone answers, and stored when a call answered by the one telephone recalls the one telephone. Recalling is performed using the second telephone number, and the incoming call is displayed only to the stored second telephone number.

(Operation) When any one of the telephones responds to an incoming call to the first telephone number which is the telephone number of the SSLT function and transfers it to the called party, if the called party is absent at the forwarding destination, it is recalled Is done. In that case, according to the present invention, of the telephones to which the first telephone number is assigned, the second telephone number assigned to the telephone which answers first is used for the recall.
Therefore, if the second telephone number is assigned to each telephone as a unique prime telephone number, the telephone that answers first will always be recalled.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram schematically showing a configuration of a portion related to the present invention of an electronic exchange for explaining a recall system according to an embodiment of the present invention. In the electronic exchange 1, the numeral receiving unit 2 is a circuit for discriminating numerals such as dial numbers from the extension telephone (or office line) 10 and the extension telephones 11 and 12 connected to the electronic exchange 1, and the analysis program The memory 3 is a memory in which a program for giving a procedure at the time of an incoming call to a telephone number of the SSLT function or a recall is stored.

The telephone number type memory 4 corresponding to the telephone number stores, for each telephone number, information indicating the type of the telephone number determined by the numeral receiving unit 2, that is, the type of the telephone number of the SSLT function or the other telephone number. It is a memory. The accommodated telephone number memory 5 corresponding to the port number is a memory that stores the telephone number (first telephone number) and the second telephone number of the SSLT function assigned to the telephone connected to each port of the electronic exchange 1. Is. Response for telephone number Telephone number memory 6
Is a memory for storing the second telephone number of the telephone which responded to the telephone number of the telephone of the calling side. Also,
The switch part 7 is a part for performing exchange connection.

Fig. 2 shows an example of multi-function telephones used for extension telephones 11, 12, etc., 21 is a telephone number display of SSLT function, 22 is a prime telephone number display of the telephone, and these telephone numbers An LED 23 is provided corresponding to the display. The present invention is also effective when standard telephones are used as the extension telephones 11 and 12.

Next, with reference to the flow chart shown in FIG. 3, a recall processing procedure in this embodiment will be described.

When there is an incoming call from the extension number telephone or telephone line of telephone number 300, whether the received telephone number is the SSLT function telephone number (200 in the example in the figure) or not Determined by referring to (step 31,3)
2). If the result of this determination is that the incoming telephone number is not the telephone number for the SSLT function, an incoming signal is output to the telephone having that telephone number and the incoming call is displayed (step 33). The indication of an incoming call is made until the telephone is answered in step 34 or the calling party stops calling.

On the other hand, when it is determined in step 32 that the incoming telephone number is the SSLT function telephone number, the incoming call is displayed on the plurality of telephones to which the SSLT function telephone number is assigned in the switch section 7 (step 35). That is, the LED corresponding to the number 200 in FIG. 3 is turned on. When the telephone that has received the incoming call responds and the response is detected through the port to which the telephone is connected, the extension 7 (or office line) 10 that has arrived and the telephone that responded are detected in the switch unit 7. Connected, the incoming signal to other than the answered telephone is stopped,
You can make a call. Next, the second telephone number (201 in the example of FIG. 3) assigned to the responding telephone is read from the accommodated telephone number memory 5 corresponding to the port number, and the answer telephone number memory 6 corresponding to the telephone number. Is stored as a response telephone number (steps 36 and 37).

Next, in step 38, it is determined whether a recall will be performed. That is, when the person who responded in step 36 transfers the call to the telephone at the location of the called party, if the called party is present, no call is recalled and a call is made (step 41). On the other hand, if the called party is absent, a recall is performed. At the time of this recall, from the contents of the response telephone number memory 6 corresponding to the telephone number, step 36
The second telephone number of the telephone which responded with is checked, and an incoming signal is output to the telephone having the second telephone number to display the incoming call (step 39). For example, in the example of FIG. 2, the LED corresponding to the second telephone number 201 is turned on. The person who answers first by this incoming call display is step 40.
The caller does not have to give the same explanation because he can answer the recall at.

Further, in this case, the telephone number display 21 of the SSLT function in FIG. 2 does not light up, and the second telephone number display 23 of the self is displayed.
Since the incoming call display is made by turning on only the LED corresponding to, the user of the phone can distinguish the incoming call display at the time of a recall from the incoming call of a new call, and can promptly respond to the recall. Becomes Therefore, the serviceability to the calling party is further improved.

FIG. 4 shows another embodiment of the present invention, in which a port number memory 8 corresponding to a telephone number is newly added. The memory 8 is a memory that stores the numbers of the ports connected to the telephones, which correspond to the telephone numbers and use the telephone numbers as prime telephone numbers. It should be noted that one telephone number is not assigned to a plurality of telephones as a prime telephone number.

In this embodiment, in step 37 in FIG. 3, the prime telephone number of the telephone that responded is stored as a response telephone number, and in step 39 in FIG. 3, the prime telephone number (the response telephone number of the telephone that responded in step 36 is stored. ), The number of the port connected to the telephone having the prime telephone number is known from the contents of the port number memory 8 corresponding to the telephone number, and an incoming signal is output to that port. Therefore, it is possible to display the incoming call at the time of the recall only to the telephone which answers first.

Further, FIG. 5 shows an example of a multifunction telephone used for the extension telephones 11 and 12 in this embodiment. In FIG. 5, 21 is a telephone number display of the SSLT function, 22 is a prime telephone number display of the telephone, 23 is an LED, and 24 is a prime telephone number display of another telephone. If the phone is the first one to answer, then SSLT
The LED corresponding to the telephone number display 21 of the function or the prime telephone number display 24 of another telephone does not light up, and only the LED corresponding to the own prime telephone number display 22 lights up to indicate the incoming call. As a result, the user of the telephone can distinguish the incoming call indication at the time of recall from the incoming call of a new call, and can promptly respond to the recall.

[Effects of the Invention] According to the present invention, a second telephone number is assigned to each of a plurality of telephones to which a first telephone number, which is a telephone number of the SSLT function, is assigned, and a response is made by any of these telephones. When the call recalls the telephone, the second telephone number is assigned as a unique prime telephone number for each telephone by making the recall using the second telephone number assigned to the telephone. If so, the phone that answers first will always be recalled. Therefore, the serviceability to the calling party is improved.

That is, since the responder at the time of the recall has responded to the same call before and knows the circumstances, it is possible to quickly and appropriately respond to the recall. From the viewpoint of the caller, it is not necessary to repeat the description at the time of the recall, for example, telling the name of the person who wants to call or the requirements.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a configuration of a main part of an electronic exchange for explaining a recall system according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a multi-function telephone used in the same embodiment. FIG. 3 is a flow chart for explaining a processing procedure at the time of recall in the same embodiment, and FIG. 4 is a schematic diagram of a configuration of a main part of an electronic exchange for explaining a recall method according to another embodiment of the present invention. 5 and FIG. 5 are explanatory views of a multi-function telephone used in the same embodiment. 1 ... Electronic exchange, 2 ... Numeric receiver, 3 ... Analysis program memory, 4 ... Telephone number corresponding memory, 5 ... Port number corresponding accommodation telephone number memory, 6 ...
… Corresponding telephone number memory for telephone numbers, 7,7a to 7c …… Switch section, 8 …… Port number memory for telephone numbers, 10
…… Extension telephone or office line, 11,12 …… Extension telephone.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Arisa Suzuki 1 Komukai Toshiba-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Toshiba Research Institute, Inc. (72) Inventor Kiyoshi Ishikawa 1 Komukai-shishi-cho, Kawasaki-shi, Kanagawa Address: Toshiba Research Institute Co., Ltd. (72) Inventor Jun Hasegawa, Komukai Toshiba Town, Komukai-ku, Kawasaki-shi, Kanagawa Address: Toshiba Research Institute Co., Ltd. (56) Reference JP-A-61-242149 (JP, A) 61-154252 (JP, A) JP 61-274599 (JP, A) JP 59-132296 (JP, A)

Claims (1)

(57) [Claims] 1. A common first telephone number is assigned to a plurality of telephones, and when a call is received at the first telephone number, an incoming signal is issued to the plurality of telephones to which the first telephone number is assigned,
When one telephone responds to the incoming call, the second telephone number that is different from each other in the plurality of telephones to which the first telephone number is assigned in the electronic exchange that enables the one telephone to call another telephone And storing a second telephone number assigned to the one telephone when the one telephone answers, and stored when a call answered by the one telephone recalls the one telephone. A recall method, wherein a call is recalled using a second telephone number, and an incoming call is displayed only to the stored second telephone number.