JP3384246B2 - Private branch exchange - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange such as a private branch exchange, a key telephone main unit, and a multimedia multiplexer equipped with a switching means. FIG. 5 is a block diagram of a conventional private branch exchange, showing a configuration in which a private branch exchange 23 is installed between a public network 21 and an extension telephone 22. Private branch exchange 2
Reference numeral 3 denotes a time-division switch 24 having a function of exchanging various voice data, and a central processing unit (C) for controlling the entire apparatus.
PU) 25, a line interface 26 connected to the public network 21 via a line, an incoming sound source 27 for notifying the extension telephone 22 of an incoming call, and the extension telephone 2
2 is provided with an extension telephone interface 28 for connecting the main unit 2 to the main unit, and a ring tone ringing designation table 29 for designating a ringing destination of the extension telephone when a local line is received. The ringing tone designation table 29 stores data for designating which extension telephone should be ringed when a local line is received, and the content of the data is variable by setting. Next, the operation will be described with reference to a flowchart shown in FIG. When there is an incoming call from the public network 21 via the office line, the office line interface 26 determines that there is an incoming call from the office line by the internal incoming detection unit.
25 is notified (step T1). [0005] The CPU 25, which has been notified of the incoming line call, refers to the incoming call ringing designation table 29 and determines which of the plurality of extension telephones should ring the incoming call (step T2). In accordance with the contents of the table 29, the CPU 25 connects the communication path of the extension interface 28 connected to the designated extension telephone 22 to the incoming sound source 27 by controlling the time division switch 23. [0006] As a result of the call path connection, a ring tone sounds to notify that there is an incoming office line at the extension telephone designated in advance by the ring tone ringing designation table 29 (step T).
3). [0007] As described above, even in the conventional private branch exchange, a ring tone can be sounded to an arbitrary extension telephone set in advance at the time of receiving an office line. [0008] However, in the conventional private branch exchange, the destination of the ring tone is fixed for the incoming line, so that the fixed extension telephone always rings. However, since the call receiving party is fixed, there is a problem that the receiving party feels unfair depending on the operation status of the system. The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a private branch exchange in which an incoming call answering party is not fixed. [0010] In the private branch exchange according to the present invention, there is provided a ring tone ringing designation table storing a plurality of ring tone ringing destination patterns for designating a telephone to ring from among a plurality of extension telephones. An incoming call count unit for counting the number of local line incoming calls, and a ring tone sounding designation table selection management for selecting one ring tone sounding destination pattern from a plurality of ring tone sounding destination patterns according to the counting result in the incoming call counting unit. And switching the ringing tone destination pattern for a plurality of extension telephones at every fixed number of incoming calls. According to the present invention, it is possible to obtain a private branch exchange in which a call reception party is not fixed. A first aspect of the present invention is a ring tone ringing designation table storing a plurality of ring tone ringing destination patterns for designating a phone to ring from among a plurality of extension telephones. And an incoming call processing counting unit that counts the number of local line incoming calls, and a ringing tone designation table selection that selects one ringing tone destination pattern from a plurality of ringing tone destination patterns according to the counting result in the incoming call counting unit. A management unit is provided to switch the ring tone ringing destination pattern for a plurality of extension telephones at every fixed number of incoming calls. An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram of a private branch exchange according to an embodiment of the present invention, and shows a configuration in which a private branch exchange 3 is installed between a public network 1 and an extension telephone 2. The private branch exchange 3 includes a time-division switch 4 having a function of exchanging various types of voice data, a central processing unit (CPU) 5 for controlling the entire apparatus, and a central office interface connected to the public network 1 via an office line. 6. Extension telephone 2
An incoming sound source 7 for notifying that there is an incoming call to
An extension telephone interface 8 for connecting the extension telephone 2 to the main unit; a ring tone ringing designation table 9 for designating a ringing destination of the extension telephone when a local line is received;
An incoming call counting unit 10 that counts the number of local line incoming calls, and a ring tone sounding designation table selection management unit (hereinafter, referred to as a table selection management unit) that selects the ring tone sounding designation table 9 according to the result of the incoming call counting unit 10. 11 is provided. The ringing tone sounding designation table 9 includes a plurality of tables (three tables in this embodiment). Data for designating whether to sound is stored. The content of this data is variable by setting. When the number of incoming calls reaches a certain number, the table selection management section 11 updates the number of the ringing tone designation table 9. This number is variable by setting. Next, the operation of the ring tone ringing process will be described with reference to the flowchart shown in FIG. First, when there is an incoming call from the public network 1 via the office line, the office line interface 6 notifies the CPU 5 that there is an incoming call from the office line by an internal incoming call detection unit (step S).
1). The CPU 5 having received the notification refers to the table selection management section 9 in order to make the extension telephone ring a ringing tone, and refers to the table of which number from among the plurality of tables # 1 to # 3. Is determined (step S2). Next, the contents of the table of the determined numbers are referred to (step S3), and the incoming sound source 7 is determined according to the contents.
Is controlled by controlling the time-division switch 4 to the communication path of the extension interface 8 to which the designated extension telephone 2 is connected. As a result of the connection of the communication channel, a ring tone for notifying that there is an incoming call from the designated extension telephone sounds (step S4). After performing the ringtone sending process, the CPU 5 counts up the count value of the incoming call count unit 10 (step S5), and notifies the table selection management unit 11 of the count content of the number of incoming calls. The table selection management section 11 updates the contents of the numbers of the ring tone ringing table 9 to be referred to when the next incoming call is made according to the notified number of incoming calls (step S).
6). Next, the process proceeds to another process (step S7), and the process ends. As described above, each time a certain number of incoming calls is reached, a plurality of incoming call ringing designation tables are switched, so that the telephone to which the incoming call can be ringed can be changed according to the number of incoming calls. FIG. 3 is a diagram showing an example of the ringing tone designation table 9. In this example, there are six extension telephones (TEL
# 1 to TEL # 6), in which a telephone with an asterisk (鳴) and a telephone with an asterisk (x) do not ring. In this example, when table # 1 is selected, two telephones TEL # 1 and TEL # 2 are selected and ring, and when table # 2 is selected, two telephones TE
When L # 3 and TEL # 4 are selected and ring, and when table # 3 is selected, two telephones TEL # 5 and TEL
# 6 is selected and sounds. FIG. 4 is a diagram showing an example of the number of the ringing tone designation table 9 referred to for the number of incoming calls and the number of the ringing telephone. This example shows a case where the table number to be referred to is switched every three incoming calls, and the telephone that rings is changed accordingly. According to the present invention, it is possible to switch the destination of an extension telephone for a local line incoming call according to the number of incoming calls. The effect is that the persons can be distributed fairly in any pattern.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a private branch exchange according to an embodiment of the present invention; FIG. 2 is a flowchart showing an operation of a ring tone ringing process according to an embodiment of the present invention; FIG. 4 is a diagram showing an example of a ring tone designation table according to an embodiment of the present invention. FIG. 5 is a block diagram of a conventional private branch exchange apparatus. FIG. 6 is a flowchart showing the operation of a conventional ring tone ringing process. [Description of References] 1 Public network 2 Extension telephone 3 Private exchange apparatus 4 Time division switch 5 Central processing unit (CPU) 6 Local line interface 7 Incoming sound source 8 Extension telephone interface 9 Incoming call sounding designation table 10 Incoming call processing count section 11 Incoming call sounding designation Buru selection management unit

Claims (1)

(57) [Claims] [Claim 1] A ring tone ringing designation table storing a plurality of ring tone ringing destination patterns for designating a telephone to ring from among a plurality of extension telephones, An incoming call processing counting unit that counts, comprising a ringtone sounding designation table selection management unit that selects one ringtone sounding destination pattern from among the plurality of ringing sound sounding destination patterns according to the counting result in the incoming call processing counting unit, A private branch exchange apparatus, wherein the ring tone ringing destination pattern for the plurality of extension telephones is switched every fixed number of incoming calls.