JPH0243861A - Trunk line hold system - Google Patents

Abstract

PURPOSE:To decrease the waste of a talking charge and to save the wait time by allowing a central controller to control the system such that a message representing enable recording is sent from a message transmission circuit to a trunk line and a message from the trunk line is recorded by a message recording circuit at the holding state of an extension telephone set. CONSTITUTION:The central controller 6 connects a message transmission circuit 9 to the trunk line 1 via a main switch 3 at the holding state of the extension telephone set 5 to send a message representing the reception of the message recording to the trunk line 1. Then the message recording circuit 12 is connected to the trunk line 1 via the main switch 3 to record the message from the trunk line 1. Thus, the operator of the holding trunk line records the message desiring to be sent by itself during the holding to restore the trunk line and if it is possible that the holding lasts for a long time, the wait time and the talking charge are saved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a central line holding system for an automatic private branch exchange.

[Conventional technology]

The conventional central office line hold system connects an extension telephone via a subscriber circuit to the main switch connected to the central office line trunk, is equipped with an audible sound generating means such as a hold tone sending circuit, and presses a hold button. The structure was such that the central office line was held and an audible sound was generated through the held sound output path.

[Problem to be solved by the invention]

In the conventional central office line hold system described above, the operator of the extension telephone presses the hold button to place the central office line on hold, and while the telephone is on hold, an audible tone is generated to notify the user that the telephone is on hold.
It has the following drawbacks.

The person on the central office line who has been placed on hold must remain on standby without disconnecting from the central office line until the telephone extension operator releases the call from hold. Therefore, if the call is on hold for a long time, time and call charges are wasted.

SUMMARY OF THE INVENTION An object of the present invention is to provide a central office line holding system that can solve the above-mentioned conventional problems and reduce waiting time and wasted call charges while the central office line is on hold.

[Means to solve the problem]

The central office line holding system of the present invention includes: an extension telephone with a holding function connected to the central office line via a main switch; a message sending circuit that outputs a message indicating that recording is possible; a message recording circuit for inputting and recording and reproducing messages; and when the extension telephone is on hold, the message sending circuit is connected to the central office line via the main switch, and the message sending circuit is controlled to send the message to the central office line. The central control device connects the message recording circuit to the central office line via a main switch and controls the message recording circuit to record the message from the central office line.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a central line reservation system according to an embodiment of the present invention. The central office line hold system uses an extension telephone 5 connected via a subscriber circuit 4 to a main switch 3 to which a central office line trunk 2 for the central office line 1 is connected, and a hold button (not shown) installed on the extension telephone 5. A central controller that performs a predetermined operation when the state is put on hold due to 6. On hold tone sending circuit 7
．． Hold time timer8. Message sending circuit 9. PB signal receiving circuit 10. Recording request reception timer 11. Message recording circuit 12. and a message destination storage circuit 13.

The main switch 3 has the function of connecting the office line trunk 2 and the subscriber circuit 4, and the function of connecting the office line trunk 2 and the hold music sending circuit 7. Message sending circuit 9. PB signal receiving circuit 10. It has a function of connecting and switching with any one of the message recording circuits 12.

The central control device 6 is formed of a CPU, etc., and controls the central office line trunk 2. Main switch 3. On hold music sending circuit 7. Hold time timer8. Message sending circuit 9. PB signal receiving circuit 1
0. Recording request reception timer 11. Message recording circuit 12
．． This is a device that appropriately controls the message destination storage circuit 13.

The held music output path 7 is a circuit that outputs a signal indicating a held music, which is an audible sound, to the main switch 3.

This hold music sending circuit 7 is designed to operate within the operation of the hold time timer 8.

The message sending circuit 9 is a circuit that outputs a message signal C to the main switch 3, the message signal C containing information such as acceptance or acceptance of message recording and recording operation method for the station vA1.

The PB signal receiving circuit 10 is a circuit that receives a PB (button button) signal d, which is a recording request signal from the station '1IA1.

The message recording circuit 12 is a circuit that records the contents of the message signal e inputted from the central office line 1 via the main switch 3.

The message destination storage circuit 13 is a circuit that receives a signal f indicating the message destination outputted from the central control unit 6 and stores the message destination.

Next, the operation of this embodiment will be explained based on the flowchart of the central control unit 6 shown in FIG.

When the hold button of the extension telephone 5 is pressed and hooked during a call between the office line 1 and the extension telephone 5, a hooking signal a is input to the central control unit 6 via the subscriber circuit 4, and the central control unit 6 is started.

Switch the main switch 3 to connect the office line trunk 2 and the hold music sending circuit 7, activate the hold music send circuit 7, and activate the hold time timer 8 (steps Sl, S2).
. As a result, the held tone signal outputted from the held tone sending circuit 7 is inputted to the central office line 1 via the main switch 3 and the central office line trunk 2, and the operator of the central office line 1 listens to the held tone.

It is determined whether the hold time timer 8 has timed out (step S3).

If the timeout has not occurred, it is determined whether the hold on the extension telephone 5 has been released, and if the hold has been released, the operation of the hold tone sending circuit 7 is stopped (
Step S4, 515). As a result, the call between the office line 1 and the extension telephone 5 can be resumed.

If the timeout has occurred, the operation of the hold tone transmission circuit 7 is stopped, and then the main switch 3 is switched to connect the central office line trunk 2 and the message transmission circuit 9, and the message transmission path 9 is activated (step S3). .S5.S6). As a result, the message signal C output from the message sending circuit 9 is input to the office line 1 via the main switch 31 and the office line trunk 2, and the operator of the office line 1 hears a message indicating that the recording of the message is accepted. be able to.

After activating the recording request reception timer 11, the main switch 3
is switched to connect the office line trunk 2 and the PB signal receiving circuit 10, and activating the PB signal receiving circuit 10 (step 37.S8). This allows the PB signal d from the office line 1 to be transferred to the office line trunk 2. The signal can be input to the PB signal receiving circuit 10 via the main switch 3.

It is determined whether the recording request reception timer 11 has timed out (step S9).

In the case of timeout, the process returns to step S1 (step S9).

If the timeout has not occurred, it is determined whether there is a recording request from station line 1 (steps 89, 310).
. That is, it is determined whether the PB signal receiving circuit 10 has received the PB signal d.

If there is no recording request, return to step S1 (
Step 510).

When there is a request for recording, the main switch 3 is switched to connect the office line trunk 2 and the message recording circuit 12 to activate the message recording circuit 12 and input the signal r to the message destination storage circuit 13 (step S10
．． 5ll). That is, the message signal e from the office line 1 is sent to the office line trunk 2. The message contents are input to the message recording circuit 12 via the main switch 3 and are recorded in the message recording circuit 12, and information indicating that the destination of this recorded message is the extension telephone 5 is stored in the message destination storage circuit 13. let

Switch the main switch 3 to connect the office line trunk 2 and the held music sending circuit 7 again, and activate the held music sending circuit 7 (
Step 512).

It is determined whether the extension telephone 5 is released from hold (step 513).

If the hold is released, message recording circuit 1
After erasing the message from the central office line 1 recorded in 2 and the message destination information stored in the message destination storage circuit 13, the operation of the hold tone sending circuit 7 is stopped (step 313.S16, 515). This allows the call to be resumed.

If the hold has not been released, it is determined whether the station line 1 has been restored (step S13.514). That is, it is determined from the state of the central office line trunk 2 whether the operator of the central office line 1 has hung up the telephone.

If the office line 1 has been restored, the operation of the hold tone sending circuit 7 is stopped (step S14.515).

As a result, the operator of the extension telephone 5 can listen to messages from the central office line 1 by causing the message recording circuit 12 to perform a playback operation after restoring the extension telephone 5. The operator of the extension telephone 5 knows the presence or absence of a message by ringing the ringer, lighting a message waiting lamp, etc., and can listen to the contents of the message from the message recording circuit 12 from the receiver of the extension telephone 5.

If the central office line 1 has not been restored, the process returns to step S13 (step 514).

〔Effect of the invention〕

As explained above, in the central office line hold system of the present invention, when an extension telephone is on hold, a message indicating that recording is possible is sent to the central office line from the message sending circuit, and the message from the central office line is recorded by the message recording circuit. Since the central control unit controls the system, it has the following effects.

(b) The operator of the suspended central office line may record a message he or she wishes to convey while the telephone is on hold and restore the central office line.

(b) Especially when there is a risk of being on hold for a long time,
It is possible to reduce standby time and call charges.

(c) Pending restoration of the central office line is often mistakenly assumed to be due to an erroneous operation or malfunction, but such misunderstandings do not occur because messages from the central office line are recorded in the message recording circuit.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a central line holding system according to an embodiment of the present invention, and FIG. 2 is a flowchart of a central control unit used in the central line holding system of FIG. 1... Office line 3... Main switch 5... Extension telephone 6... Central control unit 9... Message sending circuit 12... Message recording Circuit agent Patent attorney Yoshiyuki Iwasa 2nd

Claims (1)

[Claims] (1) An extension telephone with a hold function that is connected to the central office line via the main switch, a message sending circuit that outputs a message indicating that recording is possible, and a device that inputs and records messages from the central office line. a message recording circuit for reproducing; and a message recording circuit for connecting the message sending circuit to the central office line via the main switch and controlling the message sending circuit to send the message to the central office line when the extension telephone is on hold; A central control unit that connects the message recording circuit to a central office line via a central control unit that controls the message recording circuit to record messages from the central office line.