JPH034692A - Extension call control method - Google Patents

Abstract

PURPOSE:To attain plural different calls in the same extension telephone set by giving plural extension numbers to the extension telephone set of a private branch exchange and transmitting different call signals to the different extension numbers at the time of incoming call. CONSTITUTION:When an extension number 2000 is dialled, a common controller 21 decides that the extension storage position of a telephone set 11 having the extension number 2000 is No 300 and a call pattern is '1' by referring to an extension number control table 22. Then, the extension storage position 300 is decided to be '0', namely, vacant by an extension vacant/blocking table 24, and it is changed to be '1', namely, in a blocking state. Then, an extension control part 15 is informed that there is incoming and at the same time, that the call pattern is '1'. The extension control part 15 calls a call sound from a call signal device 30, controls a control circuit 13, generates it into the call signal of the pattern 1 and rings the telephone set 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for controlling extension calls in a private branch exchange.

2. Description of the Related Art Conventional technology companies are equipped with private branch exchanges so that telephone lines from a central office can be used effectively by multiple departments.

A private branch exchange allows multiple departments to communicate with each other.

A private branch exchange has multiple telephone extensions connected to it.
When a call comes in from outside, the operator selects an extension number and connects the call to the extension telephone where the corresponding person is located. In addition, calls between extension telephones can be made by dialing the extension number.

Problems to be Solved by the Invention However, in conventional private branch exchanges, only one extension number is assigned to each extension telephone, and therefore, when one telephone is shared by multiple individuals, incoming calls Unless you respond, you will not know who is calling you.

In order to know in advance to whom the call is made, an extension telephone dedicated to that individual is required, which raises the problem of high equipment costs.

The present invention solves these conventional problems,
To provide an extension call control method that allows calling a plurality of specific individuals with one telephone.

Means for Solving the Problems In order to achieve the above object, the present invention provides a plurality of extension numbers to the same extension telephone and generates and sends out a different ring tone for each extension number. be.

Therefore, according to the present invention, a plurality of extension numbers are given to the same telephone extension, and different patterns of ring tones are sent out for each extension number. It becomes possible to call specific individuals.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, 11 is an extension telephone, and an extension circuit 12
It is connected to the. 13 is a call control circuit, 14 is an extension call circuit, and 15 is an extension control unit 15, each of which constitutes the extension circuit 12 as a whole. Reference numeral 20 denotes a communication path device, which is connected to the extension communication circuit 14 of the extension circuit 12 . Reference numeral 21 denotes a common control device, which is connected to the communication path device 20 and the extension control section 15 of the extension circuit 12. 22 is an extension number management table, which is connected to the common control device 21. 30 is a call signal device, which is connected to the call control circuit 13 of the extension circuit 12.

FIG. 2 shows details of the extension number management table, which is composed of an extension number correspondence table 23 and an extension number vacant table 24. In the extension number correspondence table 23, physical extension accommodation position information for the extension number is given, and
A ring pattern is determined for each extension number. In addition, the extension table 24 shows whether the telephone is in use or not.
It is determined whether it is vacant.

FIG. 3 shows an example of a ringing tone pattern. In pattern 1, the ringing tone sounds for 1 second, pauses for 2 seconds, and then rings again for 1 second, repeating the process. In pattern 2, the sound repeats for 1 second and then pauses for 0.5 seconds. In pattern 3, after sounding for 0.4 seconds, 0
．． Paused for 2 seconds, then sounded again for 0.4 seconds, then 2
Repeat the action by pausing for a second.

Next, the operation of the above embodiment will be explained. In the above embodiment, the physical extension accommodating position of the telephone 11 is, for example, number 300, and the telephone 11 with the number 300 has the following:
In extension number correspondence table 23 shown in Figure 2, extension number 2
Assume that three numbers 000, 2001, and 2002 are given. When extension number 2000 is dialed now, common control device 21 refers to extension number management table 22 and determines that the extension accommodation position of telephone 11 having extension number 2000 is number 300.
And it is determined that the calling pattern is l. Next, it is determined from the extension vacancy table 24 that the extension accommodation position 300 is now 0, that is, vacant, and after changing this to 1, that is, the blocked state, the extension control unit 15 is notified of the incoming call, and at the same time the calling pattern is set to 1. Notify that In response to this notification, the extension control unit 15 controls the call control circuit 13 to generate the ring tone from the ring signal device 30 into a ring signal of pattern 1 shown in FIG. 3, and causes the telephone 11 to ring. Similarly, when extension number 2001 is dialed, telephone 11 is called using the same control flow, but since the calling pattern is 2, pattern 2 shown in FIG. 3 is generated and extension number 2001 is dialed.
Generates a ring tone different from the number 000.

Similarly, if extension number 2002 is dialed,
Extension number 2000 generates a different ring tone from the old number 20.

In this way, according to the above embodiment, the same extension telephone 11
and three extension numbers 2000 and 2001.

2002 and set a different calling pattern 1.2.3 for each extension number, this telephone 11
By memorizing the ring tone assigned to each person, the three individuals sharing the same service can determine whether the call is directed to them or not.

Effects of the Invention As is clear from the above embodiments, the present invention assigns a plurality of extension numbers to the same extension telephone and sets a different ring tone for each extension number. When individuals share a call, each person has a different extension number and a different ring tone, so it is possible to identify who is calling before answering the call, and to improve business performance. In addition to improving efficiency, it is also possible to save on the number of telephones installed.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of a private branch exchange showing an embodiment of the present invention, FIG. 2 is a diagram showing an extension number management table in the same embodiment, and FIG. 3 is a diagram showing a calling pattern of a calling signal in the same embodiment. It is a diagram. 11... Extension telephone, 12... Extension circuit, 13...
Call control circuit, 14... Extension call circuit, 15...
Extension control unit, 20--Communication path device, 21--Common control unit, 22--Extension number management table, 23--Extension number correspondence table, 24--Extension idle table, 30--・Call signal device.

Claims (1)

[Claims] An extension call control method that makes it possible to make multiple different calls on the same extension telephone by assigning multiple extension numbers to the extension telephone of a private branch exchange and sending different call signals to different extension numbers at the time of incoming calls.