JPH036993A - Call system for extension telephone set - Google Patents

Abstract

PURPOSE:To attain optimum call tone ringing in response to the environment or the like where an extension telephone set is installed by presetting a special call signal in addition to a standard call signal and using the special call signal selectively in response to a command from each extension telephone set. CONSTITUTION:A pattern of various special call signals is stored in a memory of a central controller 2 as a code number. When an extension telephone set 5 selects a special call signal, at first a user operates the extension telephone set 5 to send the specific command code to the central controller 2 and it is stored in the memory. When an incoming request exists, the central control unit 2 reads the command code from each extension telephone set stored in the memory and supplies it to an LC, TRK controller 3. The LC, TRK controller 3 controls a line circuit 4 in response to the pattern of the special call signal of the pattern number 1 selected in advance and rings the extension telephone set 5 according to the pattern of the special call signal.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for calling an extension telephone in an automatic private branch exchange, and particularly a calling method in which the ringing cycle of a ring tone for calling can be freely changed. It is related to.

(Prior Art) The ring tone of automatic private branch exchange equipment, which is currently widely used in companies, factories, government offices, etc., generally has a 3-second cycle, with a 1-second ring followed by a 2-second rest period. Depending on the installation environment or usage environment of the extension telephone connected to the extension telephone, the ring tone of the extension telephone may interfere with work, etc. For example, when a conference is being held in a conference room where an extension telephone is installed, the ringing of the extension telephone may disturb the meeting.

In order to eliminate such problems, efforts have been made to provide individual extension telephones with a function to adjust the ringer volume, and to add a function to automatic private branch exchanges to reject incoming calls.

(Problems to be Solved by the Invention) As mentioned above, it is difficult to adjust the volume of the ringer by adjusting the ringer adjustment mechanism provided in each extension telephone, and it is difficult to adjust the volume of the ringer, so it is difficult to adjust the volume of the ringer by adjusting the ringer adjustment mechanism provided in each extension telephone. For example, when reducing the ringer volume of an extension telephone installed in a conference room, if it is too low, the ringer cannot be heard, and if it is too loud, there will be no effect. Additionally, devices equipped with a call rejection function are often more inconvenient because they cannot receive calls at all, making it impossible to make emergency calls.

Furthermore, when providing a wake-up call service at a hotel, for example, it is undesirable to use a normal ring tone because it will cause discomfort to the user, and the above-mentioned Of course, you cannot use the call rejection function.

The present invention eliminates the above-mentioned conventional drawbacks, and allows each extension telephone to freely select the ringing cycle of the ringtone, thereby making it possible to obtain the ringing sound most suitable for each individual use. The purpose of this project is to provide a calling method for extension telephones.

(Means and Effects for Solving the Problems) When the automatic private branch exchange equipment calls an extension telephone, the present invention sets and stores in advance at least one special calling cycle that is different from the standard calling cycle. means for registering whether or not the special call cycle is to be used based on a command input from each extension telephone; The present invention is characterized by comprising means for making a ring tone sound at a special ring cycle registered in the registration means.

In such an extension telephone calling method of the present invention,
Since the user of each extension telephone can freely select the ringing cycle of the ring tone from among the preset ones, it is possible to ring the telephone in an optimal ringing pattern according to the usage environment.

(Embodiment) FIG. 1 is a block diagram showing the overall configuration of a system implementing the extension telephone calling method of the present invention. In FIG. 1, 1 is a communication path switch, 2 is a central control unit, and 3 is an L
C and TRK control device; 4 is a line circuit; and 5, 6, . . . are extension telephones.

In the present invention, in addition to the normal ringing cycle, several special ringing cycles are set in advance so that each extension telephone can arbitrarily select them. FIG. 2 shows examples of patterns for standard calling signals and special calling signals. As shown in FIG. 2A, the standard ringing signal has a period of 3 seconds, with a 1-second ringing followed by a 2-second rest period. The special call signal shown in FIG. 2B has a ringing period of 1 second followed by a quiet period of 5 seconds, and has a period of 6 seconds as a whole. FIG. 2C shows a ringing period of 1 second followed by a resting period of 8 seconds, and has a period of 9 seconds. In this way, in the present invention, in addition to the standard calling signals, several special calling signals are prepared in advance so that they can be arbitrarily selected and used. For this purpose, a special call signal pattern as shown in FIG. 2 is stored in a memory provided in the central control unit 2.

FIG. 3 shows the code of the special call signal stored in the memory provided in the central control unit 2 mentioned above, and pattern number 0 indicates the standard call signal with a period of 3 seconds shown in FIG. 2A. Pattern number 1 represents a special call signal with a period of 6 seconds as shown in FIG. 2B, and pattern number 2 represents a special call signal with a period of 9 seconds as shown in FIG. 2C. in this way,
The memory of the central control unit 2 stores various special call signal patterns as code numbers.

The operation when the extension telephone 5 selects the special calling signal with a period of 6 seconds shown in FIG. 2B will now be described with reference to the flowchart shown in FIG. 4. First, the user uses extension telephone 5.
is operated to send a specific command code to the central control unit 2, which is then stored in the memory. That is, the central controller 2
learns that the extension telephone 5 requests that a ring tone be sounded using, for example, a special calling signal pattern number l.

On the other hand, since such a command code is not sent from the extension telephone 6, the user knows that in response to an incoming call to this extension telephone, the telephone should ring according to the standard ringing signal shown in FIG. 2A.

When there is an incoming call request, the central control device 2 reads command codes from the individual extension telephones stored in its memory and supplies them to the LC and TRK control device 3. L.C.,T.
The RK control device 3 creates a ringing request table and a ringing periodic table based on the incoming call request signal and various signals supplied from the central control device 2. Next, this LC/TRK control device 3 checks whether or not there is a change in the ringing period based on these tables. That is, since the incoming call request is for the extension telephone 5, and the extension telephone has previously requested the use of the special calling signal as described above, it is determined that the ringing cycle needs to be changed. L.C.,T.
The RK control device 3 uses pattern number 1 selected in advance.
The line circuit 4 is controlled according to the special calling signal pattern shown in FIG. 2B, and the extension telephone 5 is made to ring according to the special calling signal pattern shown in FIG. 2B. On the other hand, when there is an incoming call request to the extension telephone 6, the LC and TRK control device 3 determines that there is no change in the ringing cycle, controls the line circuit 4 with the cycle of the standard ringing signal, and switches the extension telephone 6 to the 2. The standard ring tone shown in Figure A is used. When changing the special ringing tone to the standard ringing tone on the extension telephone 5, a command is sent to the central control unit 2 by operating the dial or button of the extension telephone, and a call having a standard cycle is sent. All you have to do is make it ring with a signal.

The present invention is not limited to the embodiments described above, and various changes and modifications are possible. For example, in the embodiment described above, eight types of special call signals are set and any one of them can be freely selected, but only one type of special call signal may be used. In this case, since there is no need to select a special call signal, the operation for specifying the special call signal becomes simple. Further, when used for a wake-up call service at a hotel or the like, a special call signal whose cycle becomes gradually shorter as shown in FIG. 5 can also be used. In this way, it is possible to set a special call signal having a pattern depending on the purpose of use by the user.

(Effects of the Invention) According to the extension telephone calling method of the present invention described above, a special calling signal is set in advance in addition to the standard calling signal, and the special calling signal is issued in response to a command from each extension telephone. Since it can be used selectively, the optimal ring tone can be set depending on the individual usage of the extension telephone and the environment in which the extension telephone is installed, greatly improving the functionality of the extension telephone. be able to.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the overall configuration of the calling method of an extension telephone according to the present invention, Fig. 2 is a signal waveform diagram showing the patterns of the standard calling signal and special calling signal, and Fig. 3 is the code of the special calling signal. FIG. 4 is a flowchart showing the operation from an incoming call request to ringing, and FIG. 5 is a signal waveform diagram showing another example of a special calling signal. 1...Call path switch 2...Central control device 3...LC, TRK control device 4...Line circuit 5.6...Extension telephone Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. When calling an extension telephone in an automatic private branch exchange, means for presetting and storing at least one special ring cycle different from the standard ring cycle in addition to the standard ring cycle, and a command input from each extension telephone. , a means for registering whether or not to use the special ringing cycle; and when an extension call is received to an extension telephone for which use of the special ringing cycle is registered, a ring tone is generated at the special ringing cycle registered in the registration means; 1. A calling method for an extension telephone, characterized in that it comprises a ringing means.