JP2010171855A - Call arrival notification apparatus, communication system, and call arrival notification method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for enabling a callee to be notified of call arrival on an early stage. <P>SOLUTION: A call arrival notification apparatus includes a call arrival information obtaining means and a call arrival notifying means. The call arrival information obtaining means obtains call arrival information, that is information specifying a callee number associated to call arrival, from a call control device that performs call control in a communication network. The call arrival notifying means transmits call arrival notification mail indicating arrival of a call to a notification destination address corresponding to the callee number specified by the call arrival information obtained by the call arrival information obtaining means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a telephone service using a communication network represented by NGN (Next Generation Network), and more particularly to an additional service attached to the telephone service.

  In ITU-T (International Telecommunication Union Telecommunication Standardization Sector; International Telecommunication Standardization Sector) and TTC (Information and Communication Technology Committee), standardization on NGN, which is a communication network using the IP (Internet Protocol) protocol, has been promoted. It has been.

  As an additional service in NGN, it is conceivable that NGN supports a service similar to the service provided in the existing subscriber telephone system. One of the additional services is to display the caller's telephone number on the receiver's telephone (see Patent Document 1 or Non-Patent Document 1).

  There is “Number Display Service” as an additional service in the existing analog subscriber telephone system of Nippon Telegraph and Telephone Corporation. This is a service that displays the caller's telephone number on the receiving telephone when an incoming call is received. As an option of the number display service, there is also a “name display” that displays the name of the caller instead of or together with the caller's telephone number. The displayed sender name is, for example, a company name or an individual name.

  Similarly, the INS Net 64 service of Nippon Telegraph and Telephone Corporation has a “caller ID notification service”. In the calling party number notification service, the calling party's subscriber line number is notified to the receiving INS network subscriber, the subscriber's number / display subscriber, or a cellular phone.

Japanese Patent No. 3374968

Technical reference material “INS Net Service Interface Volume 4 (Layer 3 Circuit Exchange Additional Service) 5th Edition”, Nippon Telegraph and Telephone Corporation, May 1, 1998

  If the caller's phone number is displayed when an incoming call is received, the caller can know the caller before answering the call. However, when the incoming call is not present and the call cannot be answered, it is impossible to know that the call has been received or the caller. You can use the incoming call history or answering machine to know that you have received a call, but you will know that after a certain amount of time has passed, such as after you return home.

  An object of the present invention is to provide a technique that enables a callee to be notified of an incoming call at an early stage.

In order to achieve the above object, an incoming call notification device of the present invention provides:
An incoming call information acquisition means for acquiring incoming call information, which is information specifying a called party number related to incoming calls, from a call control device that performs call control in a communication network;
An incoming notification unit that transmits an incoming notification mail indicating that there is an incoming call to a notification destination address corresponding to the called party number specified by the incoming information acquired by the incoming information acquisition unit; Have.

The communication system of the present invention includes:
An incoming call notification device according to the present invention;
The call control device that performs call control in the communication network and provides the incoming call notification device with incoming call information that is information specifying a callee number related to incoming call.

The incoming call notification method of the present invention includes:
From the call control device that performs call control in the communication network, obtain the incoming information that is information specifying the called party number related to the incoming call,
An incoming notification mail indicating that there is an incoming call is transmitted to a notification destination address corresponding to the called party number specified by the incoming call information.

  According to the present invention, since it is notified by mail that the recipient has received an incoming call, the recipient can be notified of the incoming call at an early stage even when he / she has not been able to answer the phone call.

It is a block diagram which shows the structure of the whole system of this embodiment. It is a block diagram which shows the structure of the incoming call notification apparatus of this embodiment. It is a figure which shows the structure and operation | movement of the whole system of a 1st Example. It is a table | surface which shows an example of the content of the file in which incoming information is stored. It is a figure which shows the example of a display of the incoming notification mail in a 1st Example. It is a figure which shows the flow of the incoming information in the system in a 1st Example. It is a sequence diagram which shows the operation example of the system in a 1st Example. It is a figure which shows the structure and operation | movement of the whole system of a 2nd Example.

  Embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of the entire system of this embodiment. Referring to FIG. 1, the telephone communication system 10 includes a call control device 11 and an incoming call notification device 12.

  The telephone communication system 10 is a network that establishes a call for outgoing calls from the terminal 13 or incoming calls to the terminal 13 and enables communication such as voice call and FAX by the terminal 13.

  The call control device 11 is a device that receives a call from the terminal 13 or an incoming call to the terminal 13 and performs call control. For example, when receiving an incoming call to a certain terminal 13, the call control device 11 calls the terminal 13 and establishes a call if there is a response from the terminal 13.

  The call control device 11 accumulates incoming information every time an incoming call to the terminal 13 occurs. The incoming call information includes the called party number, the calling party number, the incoming date and time, and the presence / absence of a response. The presence or absence of a response indicates whether or not the terminal 13 has responded to the incoming call. In addition, the incoming call information may include non-notification when the caller ID is non-notification, and further the reason for non-notification.

  The incoming call notification device 12 acquires the incoming call information stored in the call control device 11, and sends an incoming call notification mail indicating that there is an incoming call to the notification destination address corresponding to the called party number specified in the incoming call information. Send. At that time, the incoming call communication device 12 may describe in the incoming call notification mail the caller number included in the incoming call information, the fact that the caller number is not notified, the reason, the incoming date and time, and the presence or absence of a response.

  The notification destination address corresponding to the incoming call number is preset in the incoming call notification device 12 as notification condition information. The notification destination address is, for example, the address of the personal computer 51 or mobile phone 61 of the callee. The incoming notification mail transmitted from the incoming notification device 12 is sent to the personal computer 51 via the Internet 50 or to the mobile phone 61 via the mobile phone network 60.

  FIG. 2 is a block diagram illustrating a configuration of the incoming call notification device according to the present embodiment. Referring to FIG. 2, the incoming call notification device 12 includes an incoming call information acquisition unit 21 and an incoming call notification unit 22.

  The incoming information acquisition unit 21 acquires incoming information from the call control device 11. For example, the incoming call information acquisition unit 22 may periodically access the call control device 11 and read the incoming call information stored in the call control device 11.

  The incoming call notification unit 22 creates an incoming call notification mail based on the incoming call information acquired by the incoming call information acquisition unit 21 and transmits it to a notification destination address corresponding to the called party number specified in the incoming call information. For example, the incoming call notification unit 22 holds in advance a notification condition information indicating the correspondence between the callee number and the notification destination address as a database, and determines the notification destination address from the callee number by referring to the database. You may decide to do it.

  As described above, according to the present embodiment, since the caller is notified by mail that the call has been received, the caller is notified of the call at an early stage even when the call cannot be answered due to going out. Can do. For example, a subscriber to an incoming notification mail service can know that an incoming call has arrived on his / her home phone by e-mail to his / her personal computer or mobile phone even when he / she is out of work or shopping. it can.

  In the present embodiment, the notification condition information may further include a caller number registered in advance as a notification target corresponding to the callee number. Then, the incoming call notification device 12 may refer to the notification condition information by the incoming call notification unit 22 and transmit an incoming call notification mail only for an incoming call from a caller number registered as a caller number notification target. . For example, if an important caller is registered in advance, only the incoming call from the registered caller can be notified to the callee at an early stage. As a result, the called party can take an appropriate response to the calling party.

  In the present embodiment, the incoming call information stored in the call control device 11 may include information indicating whether or not the terminal with the called party number has responded to the incoming call. Then, the incoming call notification unit 22 of the incoming call notification device 12 may transmit an incoming call notification mail only for an incoming call that the terminal 13 has not responded to based on the incoming call information acquired by the incoming call information acquisition unit 21. Alternatively, the incoming call notification unit 22 of the incoming call notification device 12 may describe that there was no response to the incoming call notification mail for an incoming call that the terminal 13 did not respond to. It is possible to notify the callee at an early stage that there was an incoming call for which neither himself nor any other person answered. As a result, the called party can take an appropriate response to the calling party.

(First embodiment)
A more specific example of the above-described embodiment will be described. In this embodiment, the present invention is applied to NGN.

  FIG. 3 is a diagram showing the configuration and operation of the overall system of the first embodiment. Referring to FIG. 3, the NGN 30 includes an SSC (Subscriber Session Control Server) 31 and a CSA (Customer Control Agent) 32. A terminal 34 is connected to the NGN 30 via an HGW (Home Gateway) 33, and a terminal 36 is connected via an HGW 35. The terminals 34 and 36 are telephones, for example. The HGWs 33 and 35 are interface devices for connecting a terminal such as a telephone to the NGN 30.

  In this embodiment, attention is paid to incoming calls from the calling terminal 34 to the receiving terminal 36. It is assumed that the user of the receiving terminal 36 has a contract with a service (incoming notification mail service) that receives an incoming notification mail from the NGN 30 network.

  In this embodiment, it is assumed that the incoming notification mail is transmitted only for an incoming call from a preset caller number. Then, it is assumed that the transmission terminal 34 is a terminal having a caller number set as a target for transmitting an incoming notification mail in the service setting included in the notification condition information of the incoming terminal 36.

  In this embodiment, it is assumed that a plurality of notification destination addresses can be set in the notification condition information. In the notification condition information of the receiving terminal 36, it is assumed that both the address of the personal computer 72 and the address of the mobile phone 83 are set as the notification destination address.

  In the present embodiment, it is possible to set so that an incoming notification mail is transmitted only for an incoming call that cannot be answered. It is assumed that such setting is made in the receiving terminal 36.

  The SSC 31 is a server (SIP server) that processes a SIP (Session Initiation Protocol) to establish a user communication session. The SSC 31 corresponds to the call control device 11 in FIG. In the example shown in FIG. 3, the SSC 31 performs session establishment control related to incoming calls from the calling terminal 34 to the receiving terminal 36. The SSC 31 accumulates incoming information every time an incoming call to the incoming terminal 36 occurs.

  FIG. 4 is a table showing an example of the contents of a file in which incoming information is stored. Referring to FIG. 4, the incoming call information file includes (1) incoming number, (2) call generation time, (3) communication start time, (4) communication end time, (5) caller notification number, ( 6) Reason for non notification, (7) Detailed code is included.

  (1) The incoming call number is the telephone number of the receiving terminal 26 that has subscribed to the incoming notification service and received the incoming call. (2) The call generation time is the time when a call connection request is received. (3) The communication start time is the time when communication is started, and corresponds to the time when the receiving terminal responds to the incoming call OK. (4) The communication end time is a time when communication is ended. (5) The caller notification number is the telephone number of the calling terminal 34. When the calling terminal 34 is a subscriber accommodated in the own station of the SSC 31, the terminal number registered in the subscriber database of the own station is used as the caller notification number. When the transmission terminal 34 is a subscriber accommodated in another station, the resource identified by the telephone number is used as the caller notification number. (6) The reason for non notification is the reason when the telephone number of the calling terminal 24 is non notification. (7) As the detailed code, information related to call processing by SIP, such as the destination node, media type, response code, and processing details, is described.

  The CSA 32 is a customer control server that performs various processes for each user. The CSA 32 corresponds to the incoming call notification device 12 in FIG. The CSA 32 holds the notification condition information including the called party number subscribed to the incoming notification mail service and the service setting contents, periodically accesses the SSC 31, acquires the incoming information stored in the SSC 31, An incoming notification mail is created based on the notification condition information and the incoming information, and is sent to the notification destination address. For example, for the recipient number, the notification destination address for sending the incoming notification mail, the caller number to which the incoming notification mail is sent, and the incoming notification mail are sent only if the response cannot be made. And whether or not to set.

  In the example of FIG. 3, since the incoming call information of the incoming terminal 36 is acquired, the CSA 32 confirms that the incoming terminal 36 has subscribed to the incoming notification mail service, confirms whether or not the incoming call has been answered, It is confirmed that the terminal 34 is set as a notification target. If they satisfy the conditions for sending the incoming notification mail, the CSA 32 creates the incoming notification mail and sends it to the addresses of the personal computer 72 and the mobile phone 83 set as the notification destination address in the notification condition information.

  The flow of system operation will be described with reference to FIG.

  When there is an incoming call from the calling terminal 34 to the receiving terminal 36, the SSC 31 performs SIP processing related to the incoming call and accumulates incoming call information (step 101). The CSA 32 periodically accesses the SSC 31 and acquires the stored incoming call information (step 102). Here, the incoming call information regarding the incoming call from the transmission terminal 34 to the reception terminal 36 is acquired.

  When the incoming call information is acquired, the CSA 32 confirms that the called party number described in the incoming call information is the number of the user who has subscribed to the incoming call notification mail service. Since the receiving terminal 36 is subscribed to the incoming notification mail service, the CSA 32 creates an incoming notification mail when it is confirmed, and the personal computer 72 and the mobile phone 83 set as the notification destination address in the notification condition information. Transmit to the address (step 103).

  FIG. 5 is a diagram showing a display example of the incoming notification mail in the first embodiment. The display in FIG. 5 is a display example of an incoming notification mail on the display of the mobile phone 83. The display shows the telephone number 201 of the receiving terminal 36, the incoming date and time 202, the telephone number 203 of the calling terminal 34, the non-notification reason 204, the calling time 205, and whether or not there is a response 206.

  From the example of FIG. 5, at 10:20:30 on March 3, 2008, the calling terminal 34 having the telephone number “03 *******” from the calling terminal 34 having the telephone number “0422 ***” is shown. It can be seen that there was an incoming call to 36. In addition, it can be seen that the receiving terminal 36 does not respond to the incoming call and the calling terminal 34 abandons after 10 seconds of calling.

  In this example, the reason for non notification is not displayed because the caller ID is not non notification. However, in the case of non notification, “non notification”, “public”, “out of display area”, etc. are displayed as non notification reasons. “Non-notification” indicates that a call is made with the non-notification setting at the transmission terminal 34. “Public” indicates that the calling terminal 34 is a public telephone. “Outside display area” indicates that the transmission terminal 34 is a terminal outside the display area (for example, a foreign country).

  In addition, a text such as “There was an incoming call from 0422 ****** to 03 ******” may be described in the incoming notification mail and displayed on the display.

  FIG. 6 is a diagram showing the flow of incoming information in the system according to the first embodiment. In the example of FIG. 6, it is assumed that the SSC 31 includes a call control server 41 and an EMS (Element Management System) 42. The SSC 31 may be configured such that one EMS 42 is arranged for a plurality of call control servers 41.

  When there is an incoming call to the terminal 36 subscribed to the incoming notification mail service, the call control server 41 of the SSC 31 that performs SIP processing of the incoming call generates incoming call information related to the incoming call. In the SSC 31, the incoming call information generated by the call control server 41 is periodically read and stored in the EMS 42, which is an element management system. At that time, the incoming call information is transferred from the call control server 41 to the EMS 42 by FTP (File Transfer Protocol) as an example. The incoming call information collected in the EMS 42 of the SSC 21 is periodically read by the CSA 32 and collected in the CSA 32. At that time, the incoming call information is transferred from the EMS 42 to the CSA 32 by FTP as an example.

  In addition, the CSA 32 inputs or changes service settings such that a user who subscribes to the incoming notification mail service activates, deactivates the incoming notification mail service, or sets notification contents via the web. It has the function of The CSA 32 compares the collected incoming information with the service setting, and sends an incoming notification mail to the personal computer 72 or the mobile phone 83 having a preset notification destination address.

  FIG. 7 is a sequence diagram showing an operation example of the system in the first embodiment. FIG. 7 shows two examples of a case where the incoming terminal 36 does not respond to an incoming call (first sequence) and a case where the incoming terminal 36 responds to an incoming call (second sequence).

  In the first sequence, there is an incoming call from the calling terminal 34 to the receiving terminal 36 via the SSC 31 (steps 301 and 302).

  Here, the receiving terminal 36 does not respond to the incoming call (steps 303 and 304). The caller then abandons the call. Disconnection information is transmitted from the calling terminal 34 to the SSC 31 (step 305). The SSC 31 generates incoming call information.

  The CSA 32 acquires the incoming call information generated by the SSC 31 (step 306), generates an incoming call notification mail based on the incoming call information, and transmits it to the personal computer 72 or mobile phone 83 that is the notification destination (step 307).

  In the second sequence, as in the first sequence, there is an incoming call from the calling terminal 34 to the receiving terminal 36 via the SSC 31 (steps 401 and 402). Here, the receiving terminal 36 responds to the incoming call (steps 403 and 404). At that time, the SSC 31 generates incoming call information.

  The CSA 32 acquires the incoming call information generated by the SSC 31 (step 405), generates an incoming call notification mail based on the incoming call information, and transmits it to the personal computer 72 or the mobile phone 83 as the notification destination (step 406).

  In addition, since the receiving terminal 36 responds to the incoming call in steps 403 and 404, a call channel is established between the transmitting terminal 34 and the receiving terminal 36 (step 407).

  In the present embodiment, the contract of the incoming notification mail service is managed in units of telephone numbers, and the CSA 32 is automatically set by the service order entered by the telecommunications carrier sales representative upon request from the contractor at the time of the contract. Information for requesting service setting may be distributed and set.

  Further, the contract of the incoming notification mail service may be managed in units of telephone numbers, and the contractor may access the CSA 32 via the web and input service settings to the CSA 32 or change the service settings. .

(Second embodiment)
In the second embodiment, in addition to the system functions shown in FIG. 1, a system having a function of selecting the type of incoming notification according to the state of the called party is illustrated.

  FIG. 8 is a diagram showing the configuration and operation of the overall system of the second embodiment. Referring to FIG. 8, the telephone communication system 10A according to the second embodiment includes a call control device 11, an incoming call notification device 12A, and a state management device 14. The call control device 11 is the same as that shown in FIG.

  Similarly to the incoming call notification device 12 shown in FIG. 1, the incoming call notification device 12A acquires the incoming call information stored in the call control device 11, and sends it to the notification destination address corresponding to the called party number specified by the incoming call information. Send an incoming notification email indicating that there was an incoming call. However, the incoming call notification device 12A of the present embodiment has a function of selectively using a plurality of types of incoming notification mails, and transmits incoming call notification mails of a type selected according to the status of the service contractor. At that time, the incoming call notification device 12A holds in advance a plurality of notification destination addresses corresponding to the type of incoming notification mail, and selects a notification destination address corresponding to the selected type.

  When the incoming call notification device 12A acquires the incoming call information from the call control device 11, the incoming call notification device 12A acquires the status of the service contractor of the called party number specified by the incoming call information from the state management device 14. Further, the incoming notification device 12A selects the type of incoming notification mail based on the state, and transmits the incoming notification mail by the selected method.

  For example, the incoming call notification device 12A has functions of e-mail, instant message, and short message, and selects an appropriate one according to the status of the service contractor.

  The state management device 14 manages the state of the service contractor. As an example of the status of the service contractor, whether or not the personal computer of the recipient who is the service contractor has an instant messenger application, whether or not the instant messenger application is running, Whether or not the other terminal is moving to a place, and what other telephone number is.

  Whether the service contractor's personal computer has an instant messenger application can be set, for example, in the state management device 14 by an input from a telephone or a mobile phone by the service contractor. In addition, whether or not the service contractor has moved to a place where another terminal in the operator is located, and the telephone number of the destination terminal are also managed by the service contractor, for example, by input from a telephone or mobile phone It can be set in the device 14. Further, whether or not the personal computer of the service contractor is executing the instant messenger application can be known in real time by using the function of the instant messenger application, for example.

  For example, if an instant messenger application is executed by the personal computer of the callee, the call notification device 12A may send the call notification by an instant message. Further, for example, if the called party is moving to a place where a terminal having a certain telephone number is located in the business operator, the incoming notification device 12A may send an incoming notification to the terminal having that telephone number by a short message. Also, for example, if the instant messenger application is not running and it is not set that the callee has moved to a location on another terminal with a phone number in the operator, an email notification will be sent You may decide to send.

  The flow of system operation will be described with reference to FIG.

  When there is an incoming call from the calling terminal 13-1 to the receiving terminal 13-2, the call control device 11 performs call processing relating to the incoming call and accumulates incoming call information (step 501). The incoming call notification device 12A accesses the call control device 11 and acquires the stored incoming call information (step 502). Here, the incoming call information regarding the incoming call from the calling terminal 13-1 to the receiving terminal 13-2 is acquired.

  When the incoming call information is acquired, the incoming call notification device 12A acquires the status of the service contractor of the incoming call terminal 13-2 from the state management device 14 (step 503). Subsequently, the incoming call notification device 12A transmits an incoming call notification mail of a type corresponding to the acquired status of the service contractor (step 504). The incoming notification mail is sent as an electronic mail (504-1), an instant message (504-2), or a short message (504-3).

  According to the present embodiment, since an incoming call can be notified by an appropriate method in accordance with the state of the service contractor who is the called party, the incoming call notification to the called party can be performed better.

  As mentioned above, although embodiment and the Example of this invention were described, this invention is not limited only to these embodiment and Example, In the range of the technical thought of this invention, these are combined. It may be used or a part of the configuration may be changed.

DESCRIPTION OF SYMBOLS 10 Telephone communication system 11 Call control device 12, 12A Incoming notification device 13, 13-1 to 13-3, 34, 36 Terminal 14 State management device 21 Incoming information acquisition unit 22 Incoming notification unit 30 NGN
31 SSC
32 CSA
33 HGW
35 HGW
41 Call control server 42 EMS
50 Internet 51 Personal computer 60 Mobile phone network 61 Mobile phone

Claims (12)

An incoming call information acquisition means for acquiring incoming call information, which is information specifying a called party number related to incoming calls, from a call control device that performs call control in a communication network;
An incoming notification unit that transmits an incoming notification mail indicating that there is an incoming call to a notification destination address corresponding to the called party number specified by the incoming information acquired by the incoming information acquisition unit; Having an incoming call notification device.   The incoming call notification means holds in advance notification condition information indicating a correspondence relationship between the callee number and the notification destination address, and refers to the notification condition information to determine the notification destination address from the callee number. The incoming call notification device according to claim 1, wherein: The incoming call information acquired by the incoming call information acquisition means includes a caller number,
The notification condition information further includes a caller number registered in advance as a notification target corresponding to the callee number,
The incoming call notification means refers to the notification condition information, and transmits the incoming call notification mail only for an incoming call from a caller number registered as a notification target of the callee number.
The incoming call notification device according to claim 2. The incoming call information acquired by the incoming call information acquisition means includes an incoming call date and time,
The incoming call notification means describes the incoming call date and time included in the incoming call information in the incoming call notification mail.
The incoming call notification device according to any one of claims 1 to 3. If the caller ID is not notified, the incoming information acquired by the incoming information acquisition means includes non-notification,
5. The incoming call according to claim 1, wherein, if the incoming call information includes a non-notification, the incoming call notification means writes a non-notification in the incoming call notification mail. 6. Notification device. The incoming information when the caller ID is not notified further includes a reason for non notification,
6. The incoming call notification device according to claim 5, wherein the incoming call notification means further describes the reason for the non-notification in the incoming call notification mail. The incoming call information includes information indicating whether or not the terminal of the called party number has responded to the incoming call,
2. The incoming call notification means transmits an incoming call notification mail only for an incoming call that has not been answered by the terminal, or indicates that there has been no response to an incoming call notification mail for an incoming call that has not been answered by the terminal. The incoming call notification device according to any one of claims 1 to 6.   When the incoming call information acquisition means acquires the incoming call information, the incoming call notification means manages the status of the service contractor of the called party number specified in the incoming call information, and the status management for managing the status of each service contractor The incoming call notification apparatus according to any one of claims 1 to 7, wherein the incoming call notification mail is transmitted by a method acquired from the apparatus and selected according to the acquired state. Acquire incoming call information, which is information specifying a callee number related to an incoming call, from a call control device that performs call control in a communication network, and specify an incoming call notification mail indicating that there is an incoming call by using the acquired incoming call information An incoming call notification device for transmitting to a notification destination address corresponding to the received callee number;
A communication system comprising: the call control device that performs call control in the communication network and provides the incoming call notification device with incoming call information that is information specifying a called party number related to incoming call. The call control device stores the incoming call information every time an incoming call occurs,
The incoming call information acquisition means of the incoming call notification device periodically reads the incoming call information stored in the call control device,
The communication system according to claim 9. A state management device for managing the state of the service contractor;
When the incoming call notification device acquires the incoming call information, it acquires the status of the service contractor of the called party number specified by the incoming call information, and sends the incoming call notification mail by a method selected according to the acquired status. The communication system according to claim 9 or 10, wherein the communication is performed. From the call control device that performs call control in the communication network, obtain the incoming information that is information specifying the called party number related to the incoming call,
An incoming call notification method for transmitting an incoming call notification mail indicating that there is an incoming call to a notification destination address corresponding to the called party number specified by the incoming call information.

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