JPH0226837B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention provides a method for providing a visual and audible indication on the display panel when an incoming call is received from the line when an automatic private branch exchange is shared by multiple tenants. Regarding the exchange that will be carried out.

(b) Background of the Technology FIG. 1 is a diagram showing an example of a connection method for a central office line display panel of a distributed repeater type automatic private branch exchange, which is an example of the object of the present invention. In FIG. 1, an automatic private branch exchange 1 accommodates n central office lines 2-1 to 2-n, and a central office line display panel 3 accommodates n central office lines 2-1 to 2-n. Office line compatible lamp 4-1
4-n to 4-n and one buzzer 5 are provided. The office line corresponding lamps 4-1 to 4-n are connected to the automatic private branch exchange 1 by lamp lines 6-1 to 6-n, respectively, and the buzzer 5 is connected to the automatic private branch exchange 1 by a buzzer line 7. Now, when any central office line 2-i (i is 1 to n, the same applies hereinafter) receives a call, the automatic private branch exchange 1 sends a call via the lamp line 6-i at a predetermined period T1.
An ignition signal that is intermittent (for example, 500 milliseconds) is sent to blink the office line corresponding lamp 4-i, and the buzzer 5 is made to sound via the buzzer line 7. When the user of the automatic private branch exchange 1 who notices the above visible and audible display on the central line display board 3 performs a predetermined central line response operation using an extension (not shown), the automatic private branch exchange 1 receives the call from the extension. connected to the local office line 2-i, and sends a continuous ignition signal via the lamp line 6-i to continuously ignite the local line compatible lamp 4-i,
Also, the buzzer 5 stops sounding. When a predetermined hold operation is performed to transfer the central office line 2-i to which the extension responded to another extension, automatic private branch exchange 1
puts the local line 2-i on hold, and sends an ignition signal that is intermittent at a predetermined period T2 (for example, 1 second) via the lamp line 6-i to activate the lamp 4-i corresponding to the local line.
flash. When the extension performs a transfer operation to another predetermined extension, the automatic private branch exchange 1 connects the other extension to the on-hold central office line, and also transfers continuous transmission via the ramp line 6-i. An ignition signal is sent to continuously ignite the central line corresponding lamp 4-i. The connection method of such a station line display panel is such that a lamp line 6 equal to the number of accommodated station lines is connected to the automatic private branch exchange 1.
-1 to 6-n must be provided, and connection work is not easy. FIG. 2 shows an example of a connection system for the station line display panel 3 that has improved this drawback. In FIG. 2, office line lamps 4-1 to 4-n and buzzer 5 are connected to automatic private branch exchange 1 via display processing circuit 8 and a pair of data lines 9. In FIG.
The automatic private branch exchange 1 has accommodating office lines 2-1 to 2-i.
The station line number i and the display format are notified to the display processing circuit 8 via the data line 9 according to the connection state of the station line number i and the display format. The display processing circuit 8 sends an ignition signal corresponding to the received station line number i and display format to the station line compatible lamp 4.
-i, and also drives the buzzer 5 if necessary.
The connection status of the office line 2-i is displayed in the same way as in FIG. By using this type of central office line display board 3, the automatic private branch exchange 1 and the central office line display board 3 are connected only by the data line 9 and the power line 10 that supplies power to the central office line display board 3. This greatly simplifies the connection work.

(c) Prior Art and Problems FIG. 3 is a diagram showing an example of a connection method for central office line display panels when a plurality of tenants share this type of distributed relay automatic private branch exchange. In Figure 3, among the n office lines 2 accommodated in the automatic private branch exchange 1, n1 line is used for the first tenant, and the remaining n2 lines (n2 = n - n1) are used for the second tenant. be done. In addition, each of the first and second tenants has dedicated station line display panels 3-1 and 3-3, respectively.
-2 is provided. Each office line display board 3-1 and 3-2 has the same configuration as the office line display board 3 in FIG. . Therefore, each display processing circuit 8 generates ignition signals corresponding to all station line numbers i and display formats transmitted from the data line 9. However, each display processing circuit 8
The connection between the terminal and the station line corresponding lamp 4 for the station line used by other tenants is disconnected. Therefore, the ignition signal corresponding to the office line 2 (n1 line) used by the first tenant is the office line corresponding lamp 4 on the office line display panel 3-1.
The ignition signal corresponding to the office line 2 (n2 line) used by the second tenant lights only the office line corresponding lamps 4 (n2 pieces) of the office line display panel 3-2. However, each station line display board 3-1 and 3-2
Since the buzzer 5 installed in the office line 2 is shared by all office lines 2, even if the office line 2 corresponding to any tenant is in an incoming call state, the office line display panels 3-1 and 3
The display processing circuit 8 of -2 both causes the buzzer 5 to sound.

As is clear from the above explanation, in the conventional central office line display panel 3, the built-in buzzer 5 of the central office line display panel 3 provided exclusively for each tenant is activated when the central office line 2 used by the own tenant is in an incoming call state. This has the disadvantage that the visible display and the audible display do not match, which confuses the user because the sound rings even when the device is not in use.

(d) Object of the Invention The object of the present invention is to provide a means for eliminating the drawbacks of the conventional station line display panel as described above, and for making the visual display and the audible display on the station line display panel provided exclusively for each tenant coincide. It is about realizing.

(e) Structure of the Invention The object of the present invention is to provide an exchange that accommodates distributed relay boards, each relay board has a line display board, and each relay board displays the lines accommodated by each tenant. A predetermined cycle T is sent to each line display board.
1. Means 8 for receiving an intermittent ignition signal corresponding to the line at T2 and lighting the corresponding lamp;
This is achieved by providing means 11 for detecting the ignition signal of 1 and notifying the incoming call with a sound.

(f) Embodiment of the invention An embodiment of the invention will be described below with reference to the drawings. FIG. 4 is a diagram showing a connection method of the station line display panel according to an embodiment of the present invention, FIG. 5 is a diagram showing an example of the repetition period identification method in FIG. 4, and FIG. FIG. 7 is a diagram showing an example of various signal waveforms in FIG. 5. Note that the same reference numerals indicate the same objects throughout the figures. Also in FIG. 4, the distributed relay automatic private branch exchange 1 is shared by a first tenant who uses the n1 office line and a second tenant who uses the n2 office line. The central office line display boards 3-1 and 3-2 provided in the first and second tenants, respectively, are both equipped with n central office line compatible lamps 4, a buzzer 5, and a display processing circuit 8. The buzzer 5 is not directly driven by the display processing circuit 8, and the repetition cycle identification circuit 1 receives the ignition signal in parallel with the station line corresponding lamp 4.
1. In addition, also in Figure 4,
The display processing circuit 8 in the station line display panel 3-1 sends an ignition signal to the station line compatible lamps 4 (n1 pieces) corresponding to the first tenant station line 2 (n1 line) and the repetition cycle identification circuit 11, In addition, the display processing circuit 8 in the station line display panel 3-2 is the second tenant station line 2 (n2 line).
An ignition signal is sent to the station line compatible lamps 4 (n2 pieces) and the repetition cycle identification circuit 11 corresponding to the station line corresponding lamps 4 (n2 pieces). Next, the operation of the repetition cycle identification circuit 11 will be explained with reference to FIGS. 5 to 7. In FIG. 5, the display processing circuit 8
The ignition signal transmitted in parallel to the station line compatible lamps 4 (n1 or n2) is differentiated by a differentiating circuit consisting of a capacitor C1 and resistors R1 and R2, and only the positive half wave is extracted by a diode D. It is transmitted as signal a to terminals A of monostable multivibrators MV1 and MV3 via gates G1 and G2. The monostable multivibrator MV1 has a set time τ1 determined by resistor R3 and capacitor C2, and the monostable multivibrator MV3 has a set time τ2 determined by resistor R5 and capacitor C4. In addition, the signal b output from the terminal of monostable multivibrator MV1 is
It is transmitted to terminal A of MV2. The monostable multivibrator MV2 also has a set time τ2 determined by resistor R4 and capacitor C3. The set times τ1 and τ2 are based on the repetition periods T1 and T2 of the signals transmitted from the display processing circuit 8 in parallel to the station line corresponding lamp 4, and the condition τ1<T1<τ2.
<T2 is set to be satisfied. Signal c output from terminal Q of monostable multivibrator MV2 is transmitted to terminal CD of monostable multivibrator MV3. Each monostable multivibrator MV1 to MV3 is set by the signal a or b input from the terminal A when a high level voltage V is applied to the terminal CD.
When a low level voltage O is applied to CD, it will not be set by the signal a or b input from the terminal A. Furthermore, the identification signal d output from the terminal of the monostable multivibrator MV3 is transmitted to the base of the transistor Q via the gates G3 to G5. The transistor Q becomes conductive when a high level voltage V is applied to the base and causes the buzzer 5 to sound, but becomes blocked when a low level voltage O is applied to the base and causes the buzzer 5 to sound. There's nothing to do. In FIG. 6, the office line 2-i is in an incoming call state, and the display processing circuit 8 sends the office line corresponding lamp 4-i and the repetition cycle identification circuit 11 to the cycle T1 (500 milliseconds in this example).
When the ignition signal is transmitted, the monostable multivibrators MV1 and MV1 in the repetition period identification circuit 11
A pulse train-like signal a having a repetition period T1 is transmitted to a terminal A of MV3. Terminal B and
The monostable multivibrator MV1, to which a high level voltage V is applied to CD, has a period T during which each pulse of signal a (hereinafter referred to as pulse a, the same applies hereinafter) occurs.
1, and a pulse train-like signal b having a repetition period T1 is transmitted from the terminal to the terminal A of the monostable multivibrator MV2.
The first pulse b is a monostable multivibrator
When transmitted to terminal A of MV2, terminals B and
The monostable multivibrator MV2 to which the high level voltage V is applied to CD enters the set state by the trailing edge of the pulse b, and thereafter maintains the set state by the pulse b transmitted at every repetition period T2.
As a result, the signal c output from the terminal Q is set to a high level voltage V after the first pulse b ends. On the other hand, the monostable multivibrator MV3 is
When the first pulse a is transmitted to terminal A,
Since the signal c transmitted to the terminal CD is still at a low level voltage O, it is not set, but since the signal c is set to a high level before the second pulse a is transmitted, the second pulse a is Upon completion, a set state is entered, the identification signal d is set to a low level voltage O, and the buzzer 5 is sounded. Next, in Figure 7, station line 2
-i is put on hold, and the display processing circuit 8 sends the station line corresponding lamp 4-i and the repetition cycle identification circuit 11.
When an ignition signal with a period T2 (1 second in this example) is transmitted to terminal A of the monostable multivibrators MV1 and MV3 in the repetition period identification circuit 11, a pulse train-like signal a having a repetition period T2 is transmitted to the terminals A of the monostable multivibrators MV1 and MV3 in the repetition period identification circuit 11.
is transmitted. Monostable multivibrator MV1
is in a set state every period T2 when pulse a arrives, and the monostable multivibrator MV is connected from the terminal.
A pulse train-like signal b having a repetition period T2 is transmitted to the terminal A of No. 2. Each time each pulse b is transmitted to the terminal A of the monostable multivibrator MV2, the monostable multivibrator MV2 enters the set state by the trailing edge of the pulse b, and returns to the reset state after the set time τ2 has elapsed. As a result, terminal Q
The signal c outputted from the circuit is set to a high level voltage V after each pulse of the signal b ends, and returns to a low level voltage O again after a set time τ2 has elapsed.
Therefore, in the monostable multivibrator MV3, at the time when each pulse b is transmitted, the signal transmitted to the terminal CD is always set to a low level voltage O, so it is never set, and the identification signal d is at a high level. The voltage is maintained at O, and the buzzer 5 does not sound.

As is clear from the above description, according to the present embodiment, the buzzer 5 built in the station line display panels 3-1 and 3-2 is connected to the station line corresponding lamp 4 by the display processing circuit 8.
-i is driven via the repetition cycle identification circuit 11 when transmitting an ignition signal that is intermittent at a period T1. Therefore, the buzzer 5 in the office line display board 3-1 will sound only when a call arrives on the office line 2 (n1 line) used by the first tenant, and the buzzer 5 in the office line display board 3-2 will sound. , central office line 2 used by the second tenant
Rings only when a call arrives on (n2 line).

Note that FIGS. 4 to 7 are only one embodiment of the present invention, and for example, the number of tenants sharing the automatic private branch exchange 1 is not limited to two, but may be three.
Even in the case of the above arbitrary numbers, the effects of the present invention do not change. Further, the blinking period of the lamp 4 corresponding to the central office line is not limited to 500 milliseconds or 1 second, and many other modifications may be considered, but the effects of the present invention do not change in any case. Also, the buzzer 5 is the station line display board 3.
The present invention is not limited to being built into the station line display panel 3, and may be provided separately from the station line display panel 3, but the effects of the present invention do not change even in such a case. Further, the audible display means is not limited to a buzzer, and many other modifications may be considered, but the effects of the present invention will not change in any case. Also, the repetition period identification circuit 11
The configuration is not limited to that shown in the drawings, and many other modifications may be considered, but the effects of the present invention will not change in any case. In the above description, the display of incoming calls from a central office line has been described, but the present invention may be applied to lines.

(g) Effects of the Invention As described above, according to the present invention, in the receiving circuit, it is possible to identify the setting timing of a short repetition period from among the pulse trains in which two types of repetition periods are switched and set at any time. When a stand-type automatic private branch exchange is shared by multiple tenants, the visual and audible displays on the station line display panel can be matched.

[Brief explanation of drawings]

Figure 1 is a diagram showing an example of the connection method of the central line display panel of a distributed relay type automatic private branch exchange, and Figure 2 is another example of the connection method of the central line display panel of a distributed relay type automatic private branch exchange. FIG. 3 is a diagram showing an example of the connection method of the office line display panel in a plurality of tenants, FIG. 4 is a diagram showing the connection method of the office line display panel according to an embodiment of the present invention, and FIG. is a diagram showing an example of the repetition period identification method in FIG. 4, and FIG.
FIG. 7 is a diagram showing an example of various signal waveforms when a call is received on the central office line, and FIG. 7 is a diagram showing an example of various signal waveforms when the central office line is held in FIG. In the figure, 1 is an automatic private branch exchange, 2-1 to 2-n and 2 are office lines, 3-1 to 3-2 and 3 are office line display panels, and 4-1 to 4-n and 4 are office lines. Compatible lamps, 5 is a buzzer, 6-1 to 6-n
and 6 is a lamp line, 7 is a buzzer line, 8 is a display processing circuit, 9 is a data line, 10 is a power supply line, 11 is a repetition cycle identification circuit, R1 to R5 are resistors, C1 to C4 are capacitors, and G1 to G5 are Gate, D
is a diode, Q is a transistor, MV1 to
MV3 is a monostable multivibrator, a, b and c are signals, and d is an identification signal.

Claims (1)

[Scope of Claims] 1. In an exchange that accommodates distributed relay boards, each relay board has a line display panel, and each relay board displays the lines accommodated by each tenant, To the display panel, the predetermined period T1,
means 8 for receiving an intermittent ignition signal compatible with the line at T2 and lighting the corresponding lamp; and means 8 for detecting an ignition signal of a specific period T1 in the lamp ignition signal using the lamp ignition signal to notify an incoming call with a sound. 11. An exchange having an incoming call display function, characterized by comprising: 11.