JPH0340646A - Private branch exchange - Google Patents

Abstract

PURPOSE:To allow a party subjected to holding to represents a request of holding release to a holding setting party by receiving a holding call signal inputted externally during holding and generating a call tone with an extension telephone set applying holding setting according to the holding call signal. CONSTITUTION:When a holding request signal is sent from an extension telephone set 110 to an exchange, the exchange controls a channel switch section 103 while acquiring a trunk line B subjected to holding to release the channel connection state between the holding setting extension and the trunk line B subjected to holding and a DTMF signal reception section 104 is connected to the trunk line B subjected to holding. When it is required to call a holding setting party from the party subjected to holding on an emergency business or the like or the holding state of a trunk line continues for a long time while no holding is released, the party subjected to holding applies the operation of a predetermined button as a holding call requesting signal. The exchange sets a busy state call to the holding setting party when a received DTMF signal is a holding call request from the user subjected to holding.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a private branch exchange.

Conventional technology First, the holding function of a conventional private branch exchange will be explained.

For example, if a private branch exchange receives a call from another extension while talking between an extension telephone and a central office line (1111), the user of the extension will make the other party on the central office line wait, and the call will be received during that time. There are some devices that are configured to be able to respond to calls.At that time, the central office line that is in use continues to be captured, and unnecessary sounds from the extension side do not leak into the central office line.Hereafter, we will introduce such a function. I'll call it the hold function.

The user of the other party who has been placed on hold (hereinafter referred to as the person on hold) must wait on the receiver until the user who placed the person on hold (hereinafter referred to as the person who set the hold) uses the device to release the call from hold. becomes.

Problems to be Solved by the Invention Incidentally, there are cases in which a person who has set a hold holds a hold for a long time while maintaining the hold state. If, during that time, the person on hold has something urgent to do or there is an unavoidable need to call the person who set the hold, only the person who set the hold can release the hold.

If it is unavoidable, the person on hold will have to unilaterally terminate the contract, but there are many cases where the person in question cannot do so unilaterally due to their position. In such a case, the person on hold must wait, even for a long time, until the person who set the hold performs an operation to release the hold. In particular, if the call is a long-distance call originating from the person on hold, the burden of call charges on the person on hold becomes extremely large.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a receiving means capable of receiving a mooring call signal inputted from the outside while on hold, and an extension telephone set to be put on hold in accordance with the mooring call signal. A mooring call signal processing means is provided to generate a ring tone when the vessel is moored.

Effect By configuring as above, in the pending state,
By the operation of the person on hold on the central office line side, it is possible to make a ring tone on the extension telephone that has been set on hold, thereby indicating an intention to request release from hold.

Embodiment A private branch exchange in an embodiment of the present invention will be described below. In FIG. 1, reference numeral 101 is a central office line interface that enables connection to the central office line by capturing the central office line and sending a dial signal to the central office line, and 103 is equipped with a large number of switches to connect the central office line and each extension. A communication path unit 102 that connects to form a communication path is an extension interface that connects with an extension terminal. Reference numeral 104 denotes a DTMF signal receiving section, which detects various signals sent in DTMF format from the central office line. and DTMF signal receiving section 1
04 is configured to be able to detect a pending paging signal sent from a held extension.

Reference numeral 105 denotes a control section that controls each section and the exchange operation.

Next, in the button private branch exchange configured as above,
Processing related to the pending call function will be explained based on FIG. 2.

2nd r2! is a process related to the hold setting of the exchange.

Now, assume that a certain extension and the central office line are connected to each other at an exchange, and a call is in progress between the extension (l!1) and the central office line. When the hold button is operated, a hold request signal is sent from the extension telephone 110 to the exchange.When the exchange receives this hold request signal (step 202), it performs hold processing according to the hold request signal sent from the extension telephone 110. First, while capturing the moored station line B, switch the communication path switch section 10.
3 to release the communication path connection state between the extension set on hold and the moored station line B, and the DTMF signal receiving section 104 is connected to the moored station line B (step 203).

In this way, the voice path is cut off by the communication path switch section 103, so that the voice does not leak to each other.Moreover, the moored station line B is connected to the DTMF signal receiving section 104, and the DTM
Prepare to receive the F signal. In addition, a hold tone source (not shown) is connected to the moored station line B and sends the hold tone to the station line side.Step 204 monitors hold release requests from the hold extension, and step 205 monitors hold release requests from the hold extension. DTM from line
Monitor the presence or absence of the F signal. In the pending state, this step 2
04 and step 205 will be repeated. When a DTMF signal is sent from the held station line, the contents of the signal are examined in step 206. Oh, step 204
When a hold release request from the hold set extension is detected at , the exchange performs hold release processing in accordance with the request and establishes a communication path between the extension telephone 110 and the moored office line B again.

If the person on hold has an urgent need to call the person who set the hold, or if the person on hold remains on hold for a long time without being released from hold, the person on hold will request a call while on hold. Operate a button that is predetermined as a signal. The DTMF signal will then be transmitted to the exchange.

In the hold state, as mentioned above, the exchange can receive DTMF signals from the central office line side, and if the received DTMF signal is a hold call request from the user being held, the following processing is performed: . That is, if the person who set the hold is already talking with another person, step 209) is performed to make a busy call to the person who set the hold. On the other hand, if the person who set the hold is not in the middle of a call, the person who set the hold is called again while on hold.

In either case of a busy call or a re-call while on hold, when the person who set the hold responds during the call (steps 209 and 210), the control unit 105 transmits the DTM F signal receiving unit 104 from the central office line interface E01. Separate,
The extension A of the person on hold and the office line B of the person on hold are connected again to form a communication path.

FIG. 3 is a state transition diagram of the person on hold, where 30) indicates a busy state and 302 indicates a state on hold. Fourth
The figure is a state transition diagram on the hold setter side, with 401 and 4
03 indicates the busy state, 402 indicates the on-call state, 404 indicates the on-hold recall state, and 405 indicates the busy call state.

More than the effects of the invention, the present invention provides a receiving means capable of receiving a on-hold ringing signal inputted from the outside while on hold, and generating a ringing tone on an extension telephone set on hold according to the above-mentioned on-hold ringing signal. By installing a holding call signal processing means, when the phone is on hold, the telephone that was set to hold on the central office line will make a ring tone to indicate the intention to release the hold. It becomes possible to do
Therefore, even if it becomes necessary for the person on hold to call the person who set the hold, the person on hold can request the person who set the hold to release the hold, and the person on hold can be released from the hold. It becomes possible to have it done. In particular, if the call is a long-distance call made by the person on hold, the person who set the hold can request that the call be released from hold, so the person on hold does not have to unilaterally end the call, and the other party It is possible to end a call without being rude, and the burden of call charges on the person on hold can be kept low.

[Brief explanation of drawings]

′! Fig. F%1 is a block diagram showing the configuration of a private branch exchange in an embodiment of the present invention, Fig. 2 is a flowchart showing the processing of the main device regarding the hold function of the private branch exchange, and Fig. 3 is a flowchart showing the processing of the main device regarding the hold function of the private branch exchange. FIG. 4 is a state transition diagram for the person who set the hold. 01 02 03 ■ 04 05 Office line interface: Extension interface Call path switch section DTMF signal receiving section: Control section

Claims (1)

[Scope of Claims] It is configured to accommodate a plurality of extension lines and a central office line, and to perform exchange connections between each extension line and between each extension line and the central office line, and is connected to the extension line by a hold request signal from an extension telephone. a holding processing means that puts the station line that has been placed on hold into a hold state; a receiving means capable of receiving a holding call signal input from the station line when the station line is placed on hold; A private branch exchange characterized in that it is provided with a hold call signal processing means for generating a ring tone on an extension telephone set.