KR19990086215A - Multiple Ring Tone Service Method in Electronic Switching System - Google Patents

Abstract

The present invention relates to a multi ring service that can provide a plurality of logical numbers to one physical subscriber line and define various ring tones to provide the same ringing signal to the same called terminal. will be.

This invention comprises the steps of defining an identification number corresponding to the subscriber's phone ring; Requesting a call to the called party by the calling party dialing according to the defined identification number; Determining, by the exchange, that the exchange translates the called number to determine whether the incoming call is possible and, if the incoming call is possible, determining whether the call is a subscriber of the multi-tone phone service; And if the subscriber is a multi-call tone service subscriber, applying a ringing signal corresponding to the identification number to the called party and delivering a corresponding ring back tone to the calling party.

Therefore, according to the present invention, it is possible to distinguish a called party by providing a ringing tone to another physical line subscriber by calling another call signal, so that the called party directly receives a call when the incoming call has a convenient effect.

Description

METHOD FOR PROVIDING MULTI RING IN A DIGITAL EXCHANGE

The present invention relates to a multi ring service that can provide a plurality of logical numbers to one physical subscriber line and define various ring tones to provide the same ringing signal to the same called terminal. will be.

In general, during a call processing in a public telephone network, a ringing tone (ringback) corresponding to the ringing signal is transmitted to the caller as well as to send a ringing signal (i.e., ring) to inform the caller of the called party's telephone to finally call the called party. To provide. The normal call signal (or ring tone) is composed of two seconds per second and supplies a ring signal to the called telephone for a predetermined number of times.

However, if a family uses a single phone at home, the phone rings the same, so when the phone rings, someone near the phone picks up the phone's handset and talks with the calling subscriber to confirm the desired called party. There is a troublesome problem because it allows the call between the subscribers.

Accordingly, the present invention provides a method for implementing a multiple ring tone service to distinguish the desired incoming subscriber according to the call signal after allocating various ring tones (or call signal) to one subscription line to solve the above problems. Its purpose is to. Here, the 'multiple tone service' refers to a service that provides a plurality of logical line numbers to one physical line and provides different call signals and ring tones for calls received at each logical number.

In order to achieve the above object, the present invention includes the steps of defining an identification number corresponding to the telephone ring of the called subscriber; Requesting a call to the called party by the calling party dialing according to the defined identification number; Determining, by the exchange, that the exchange translates the called number to determine whether the incoming call is possible and, if the incoming call is possible, determining whether the call is a subscriber of the multi-tone phone service; And if the subscriber is a multi-call tone service subscriber, applying a ringing signal corresponding to the identification number to the called party and delivering the ring tone to the calling party.

1 is a flowchart illustrating a multi-call tone service method according to the present invention;

2 is an example of a ring tone according to the present invention;

3 is an example of applying the present invention to a PSTN,

4 is an example of applying the present invention to ISDN.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating a multiple ring tone service method according to the present invention. In FIG. 1, the subject of communication is divided into originating subscriber, switching network, and called subscriber, and call setting is performed by connecting the communication path between the calling subscriber and the called subscriber by checking the status of the called subscriber at the request of the calling subscriber. It is done. In addition, the switching network includes a plurality of relay exchanges connecting the calling exchange and the exchanges to which the calling subscriber is connected, and a destination exchange connected to the called subscriber. In the embodiment of the present invention, the switching network is represented by one exchange.

Referring to FIG. 1, when the calling subscriber hooks off the idle phone (steps 101 and 102), the exchange detects this and determines whether the calling is possible and then assigns a subscriber signal and sends out a dial tone to the calling phone ( Step 104). The calling subscriber hears the dial tone and dials to call the desired called subscriber (step 103), and the exchange receives the dial digit sent by the calling subscriber and translates the number (step 105). At this time, the number translation is divided into station number translation and called number translation, according to the present invention can add a logical number to the called number or different called number itself to distinguish the ring tone.

When the translation of the number is completed, the state of the called party is determined to determine whether the incoming call is possible (step 106). If the called party is busy, a call is sent to the calling party (step 107). Awareness is determined (step 108).

If it is determined that the subscriber does not have a multi-tone ring service, the user transmits a general call signal to the subscriber and rings the telephone of the called subscriber (steps 109 and 112). The call signal is sent (steps 110 and 113). At this time, the ringing tone corresponding to the ringing signal of the called party is transmitted to the calling party.

For example, if the call sound (or call signal) is divided by adding a separate logical number to the called party number, if it is "xxx-yyyy-1", as shown in (a) of FIG. Call signal), and if it is " xxx-yyyy-2 ", as shown in FIG. 2 (b), a call sound (or call signal) of 1 second per second is transmitted. And if it is "xxx-yyyy-3", as shown in (c) of FIG. 2, a call tone (or call signal) of 5 seconds per second is transmitted. If the call tone is classified into the subscriber's number, if it is "xxx-yyy1", as shown in (a) of FIG. 2, the call tone (or call signal) of 2 seconds per second is transmitted, and if it is "xxx-yyy2". As shown in (b) of FIG. 2, a call sound (or a call signal) of two seconds and one second is transmitted, and if it is "xxx-yyy3", as shown in (c) of FIG. Or a call signal).

2 is a timing example of a call tone (or call signal) according to the present invention. (A) shows a call sound (or call signal) of 1 second and 2 seconds, and (b) shows a call sound (or 2 second and 1 second). Call signal), and (C) shows an example of a call sound (or call signal) of 5 seconds per second. In this way, in assigning multiple call tones, each call should be easily distinguishable, and if the number of call tones is increased, the logical number increases accordingly. An embodiment of the present invention will be described taking the case of providing three types of ring tone services as an example.

Referring back to FIG. 1, when the called party rings the phone, the hook is turned off (step 114) and thus the exchange provides a call path between the calling party and the called party (step 115). When the call is completed, the call release procedure is performed by the calling party or the called party by hooking on. If the exchange detects the hook-on of one side, the exchange disconnects the call and releases the call (steps 116, 117, 118 and 119).

3 shows an example in which the present invention is applied to a public switched telephone network (PSTN). Referring to Fig. 3, "ASC" indicates an originating analog subscriber call processing block, "NTR" indicates a number translation block, and "ASC" indicates a called analog subscriber call processing block. And "ASI" represents an analog subscriber matching block.

The originating ASC block sends a message (PfxTranSubRQ) requesting the prefix translation to the number translation block (NTR). The number translation block (NTR) forwards the response message (IntCallRP) to the originating ASC block, and then the originating ASC block forwards the called party number translation message (CdNoTransRQ) to the number translation block (NTR). The number translation block (NTR) transmits a Caeser Request message (CdSubbsSZRQ) carrying ring type information corresponding to each dial number (DN) to the called party ASC block, and the called party ASC block sends a response message (CdSubsSZRP) to the calling party. In addition, a ring connection message (RingConnRQ_CI) is transmitted to the analog subscriber matching block (ASI).

In more detail, when the originating exchange detects a hook-off, it determines whether to accept the call according to the calling party's line status, restriction function, priority, etc., and then selects an appropriate subscriber signal according to the subscriber line signaling method (eg, DTMFR). Allocate If the calling subscriber is not a 'direct call' or a 'do not call' subscriber, the first digit monitoring timer is set, a dial tone is sent to the subscriber, and the call status is 'outgoing'. If a digit is not detected during the call during the call, a dial delay announcement is sent.

If an outgoing subscriber hook-on signal is received during outgoing dial tone, the assigned subscriber beacon is retrieved and the state of the call is changed to idle. When receiving the digits 0 to 9 from the subscriber while transmitting the dial tone, the dial tone is cut off and the digit is stored for prefix analysis. If all the digits required for station number translation are received, it is analyzed to determine the type of call, the maximum and minimum number of digits, and the digit transmission start point. If the station number is not assigned as a result of the station number analysis, link the station number guide.

When the call state receives the subscriber hook-on signal while the station number is being received, the allocated subscriber signal is retrieved and the call state is changed to an idle state. When receiving an undefined subscriber signal or receiving a signal such as "#" in the state of receiving a station number or receiving a call number, a call tone is connected and the call state is changed to a call tone transmission. The subscriber subscriber signal. In case of receiving 'Interdigit Timeout' signal in 'Station Number Receiving' and 'Receiving Call Number' status, dial delay guidance is connected.

By analyzing the class of the called subscriber, the subscriber line type, billing information, incoming and outgoing call separation information, and various special service registration information are obtained. In this case, if the subscriber registers a multi-call tone service, the call tone information corresponding to the dial number (DN) is obtained. Finally, the grade of the calling subscriber and the grade of the called subscriber are analyzed to finally decide whether to accept or reject the call.

After analyzing the grade of the called subscriber, if the subscriber is not registered in the special services such as changing the subscriber number, incoming call transfer, call ban, call suspension, and missed call, and the line is normal and idle, the dialing number is sent to the calling subscriber. A ringing tone corresponding to the (DN) value is transmitted, a ringing signal (Ring) is sent to the called party, and the call state is changed to 'incoming'.

If the status of the called party is 'Fault repairing', the guide will be sent during the troubleshooting. When receiving the calling party recovery signal in the called party, the transmission of the ring tone and the calling signal is stopped, and the call state is idle. In addition, when a 'hook-off' signal is received in the 'calling subscriber' state, the call signal being sent to the called subscriber and the ringing tone being sent to the calling subscriber are disconnected, the call path is connected, and the call status is received. Make 'call'. Analyze the billing grade, destination and destination for billing party, billing point, billing record, billing method, billing rate, PPM sending, billing discount function application, immediately billing Make a decision and record the call start time as needed.

When the caller receives the caller's disconnect signal from the caller, the caller releases the call, generates the billing data as necessary, stops the charge, sends the caller to the called party, and makes the call status 'calling the call'. Sets the busy tone timer. When a busy sound timer signal is received in the busy state, the state is 'line lock out'. When the incoming call disconnection signal is received in the line lockout state, the call is idled.

When a called party disconnect signal is received in a busy state, the call state is changed to 'call waiting' state. When the incoming call disconnection signal is received in the incoming call waiting state, the channel is disconnected, the charge is stopped, and the charging data is generated as needed. The call is initiated when the receiving party's re-answer signal is received within a certain time while the call is waiting. When the release timer timeout signal is received in the incoming call waiting state, a call sound is sent to the called party, the call state is set to 'calling sound', and a call sound timer is set. When a busy tone timer signal is received in the busy tone state, a 'line lockout' state is generated. When the incoming call disconnection signal is received in the line lockout state, the call is in an idle state.

The call is terminated by the calling party's recovery signal in the busy state. When the called party's recovery signal is received in the incoming call waiting state, the call is idle. On the other hand, if there is no subscriber signal available and is not assigned, the bursting sound is sent to the calling subscriber, the call state is 'buzzing out', and the bursting sound sending timer is set. If the calling party's status is not normal, a call tone is connected, the call state is changed to 'calling tone', and a call tone timer is set.

4 is an example of applying the present invention to ISDN. Referring to Fig. 4, the "DCC" block represents the calling digital subscriber call processing block, the "NTR" represents the number translation block, and the "DCC" represents the called digital subscriber calling process block. . And "DSI" represents a digital subscriber matching block.

When the originating DCC block sends an Enblock Translation Request message (EnblockTranRQ) to the NTR block, the NTR block analyzes it and sends a response message (SlbslntCallRP) to the originating DCC block. The NTR block transmits a digital subscriber scissor request message (DigCdSubsSZRQ) to the called DCC block, and accordingly, the called DCC block sends a scissor response message (DigCdSubsSZRP) to the calling party and rings the called digital subscriber matching block (DSI). Send the connection request message (RingConnRQ_CI).

More specifically, the exchange recognizes a call request by receiving a "SETUP" message, which is a call setup request from an originating digital subscriber. The setup message shall not use a dummy call reference and shall contain a "bearer capability" information element. The exchange accepts this message to analyze the inclusion of the necessary information elements and the appropriate message type. At this time, if the subscriber of the multi-tone ring tone service results from transmitting the ring type information corresponding to the dialing number (DN), the subscriber can supply the appropriate ring for each dialing number (DN). It also diagnoses the subscriber's line status, that is, whether there is a valid B channel, whether the call is in a restricted state, and decides whether to set up or cancel a call request and notifies the calling subscriber. Therefore, the exchange shall be the administrator of the circuit in use and the use of the channel on the circuit.

In Enblock transmission mode, all the information necessary for setting the incoming call and the transmission completion information element are included in the setup message. Therefore, refer to the channel identification information in the setup message and select the available B channel according to the channel selection procedure. Call setup is initiated and call release is initiated if no B channel is available. If the subscriber requests the use of a specific channel, it checks the availability of this channel and proceeds to call setup only when it is valid. Otherwise, the subscriber is notified and the call is released.

In the overlapped transmission mode, since the setup message does not have all the information necessary for call setup, additional information is required, and the network transmits a call setup confirmation message to the subscriber station in order to further receive necessary information. Subsequently, the subscriber station side is in a waiting state for receiving necessary information as an "INFORM" message. The monitoring timer is operated to monitor the incoming INFORM message until all the information necessary for call setup is completed.If the INFORM is not received even after the termination of this timer, the recovery procedure by the timer termination of "predetermined release cause value" is started. In the case of a voice call, an announcement broadcast for notifying a dial delay is connected.

When the terminating subscriber's terminal is in the overlapping transmission mode, the exchange transmits a setup message and receives a SETUP ACK message from the terminating terminal. In this case, the calling terminal transmits the desired information to match the transmission mode of the terminating terminal. You can send additional messages with the INFORM "message.

When the originating subscriber's terminal is in the overlapping transmission mode, the exchange receives the information through the INFORM message until all the desired information is received. The called party number information element has priority in processing compared to the keypad information element. After all the preparations required for the incoming call from the called party have been completed, a CALL PROCEEDING message is sent to indicate that the required call setup has begun, indicating that no further call setup information is received.

When an ALERTING message is received from the calling terminal (this message includes ring type information corresponding to the DN value), the calling terminal transmits the calling message through the D channel, and the ringback tone through the B channel to the calling terminal. To provide. A "CONNECT" message is then received from the called party to notify that the called party has received the call. When the CONNECT message is received, it connects to the telephone line, sends a "CONNECT ACK" message to the called party, and sends a "CONNECT" message to the calling terminal to notify that call setup is completed.

If a "DISCONNECT" message is received from a calling / receiving subscriber in a busy state, a "RELEASE" message is returned to the subscriber, and the receiver waits to receive a "RELEASE COMPLETE" message. Upon receiving the "RELEASE" message, the device sending the message disconnects the information channel, releases the call reference number, returns the "RELEASE COMPLETE" message to the subscriber, and transitions to the dormant state.

A RELEASE COMPLETE message is received to indicate that the user has already released the B channel and call reference number. When this message is received, the B channel is made available again by initializing all resources used for that call. The side receiving the message releases the call reference number.

If the message received from the subscriber is not normal, the valid B channel does not exist, or the system is overloaded, the subscriber is notified by using the control message including the cause or indication information element. When a subscriber or exchange receives a "DISCONNECT" message with the same reference number to release a call at the same time, it cancels the timer, disconnects the channel, and sends a "RELEASE" message to the subscriber to prevent the call release collision. In addition, a release conflict may occur by simultaneously transmitting a "RELEASE" message with the same call reference number. In this case, the receiver receiving the "RELEASE" message cancels the timer and uses the channel and the call without transmitting and receiving the "RELEASE COMPLETE" message. Release the reference number and transition to the idle state.

As described above, the present invention has a convenient ring effect by allowing the called party to directly receive a call when the incoming call is provided by distinguishing the called party by providing a different ringing signal to one physical line subscriber.

Claims (1)

Defining an identification number corresponding to the subscriber's phone ringing; Requesting a call to the called party by the calling party dialing according to the defined identification number; Determining, by the exchange, that the exchange translates the called number to determine whether the incoming call is possible and, if the incoming call is possible, determining whether the call is a subscriber of the multi-tone phone service; And If the subscriber is a multiple ring tone service, a call signal (Ring) corresponding to the identification number is applied to the called party and the ring tone is transmitted to the calling party. .