JPH04160965A - Method of updating presence information in switching network - Google Patents

Abstract

PURPOSE:To unnecessitate the registering of subscriber's absence by making a position management section monitor a response from a called terminal, making the position management section change presence information of the called terminal from presence to absence if no response from the called terminal reaches within a predetermined period of time, and making the position management section update presence information of presence/absence in correspondence to a subscriber's logic communication number. CONSTITUTION:The case that a subscriber B is separated from a subscriber terminal 2 that did position registration as follows. When subscriber A requests subscriber B for connection using a logic communication number '5050', a position management section 6 requests a call control section 4 to connect subscriber terminal 1 to subscriber terminal 2, and starts measuring a period of time taken to the completion of the connection. After that, if the call control section 4 receives no call reception message even after a predetermined period of time passes, the position management section 6 makes the call control section 4 terminate call processing and makes the call control section 4 send absence notice to the subscriber terminal 1. Further, the position management section 6 changes presence information for subscriber B to 'absence'.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for updating presence information in a switching network that assigns logical communication numbers to subscribers and connects each subscriber to a destination to which the subscriber moves.

(Prior Art) Conventionally, services have been provided for the convenience of callers, such as an absence service that detects the destination subscriber's absence and enables transfer. A method is used in which an incoming call to a subscriber terminal is processed based on a physical number that identifies the subscriber terminal, and a call control unit monitors the response time and performs absence processing. In the method used for absent service, as shown in FIG. 2(a), when a connection request is made from subscriber terminal 1 to subscriber terminal 2, call control unit 4
The subscriber data shown in FIG. 2(b) is searched.

If the transfer destination physical number “2020” is registered as the transfer destination of the terminal number “2” indicating the subscriber terminal 2, the calling side m unit 4
starts calling the destination subscriber terminal 2, continues calling for a predetermined period of time, and if there is no response within the specified period of time, switches the subscriber terminal 1 to the registered transfer destination "2020". Transfer connection via 5.

On the other hand, there is a connection service in which a logical communication number is given to a subscriber, the subscriber registers the location at the destination, and the subscriber is transferred to the destination. In the method used for the connection service, as shown in FIG. 3(a), a location management section 6 is connected to the call control section 4. When the location management unit 6 receives the logical communication number “5000” that identifies the
), the logical communication number "5000" and the physical number "2000." of the subscriber terminal 1 are associated and managed,
Register the subscriber's location. When the location management unit 6 receives a connection request addressed to the logical communication number "5000" from the subscriber terminal 2, for example, the location management unit 6 searches for the physical number "2000" of the corresponding subscriber terminal from the logical communication number "5000",
The physical number "2000" is transmitted to the call control unit 4. The call control unit 4 connects the subscriber terminal 2 to the subscriber terminal 1 where the subscriber's location is registered.

Furthermore, when the subscriber with the logical communication number "5010" leaves the subscriber terminal 1 that has registered the location, and registers his/her absence, the location management unit 6 updates the presence information corresponding to the logical communication number with "presence". ” to “absent”. Thereafter, when the location management unit 6 receives a connection request to the absent subscriber, it notifies the calling requesting subscriber terminal of the absence of the destination subscriber.

According to each of the above conventional methods, absence processing is performed by monitoring the response time corresponding to the subscriber terminal, and subscriber terminals registered based on logical communication numbers in the location management section. By determining this, the call control unit can perform incoming call processing.

(Problem to be Solved by the Invention) However, in the conventional method, when multiple subscribers share a subscriber terminal, the call side FG 1 monitors the response time corresponding to the subscriber terminal. Therefore, even if the call is received by another subscriber who shares the same subscriber terminal, the call control unit will treat the call as being absent.

Furthermore, even when combined with the method using logical communication numbers, the location management unit only specifies the physical number of the transfer destination to the call control unit, so the call control unit measures the response time according to the logical communication number. It is not possible. Therefore, it is not possible to measure response time for each subscriber and detect absence.

An object of the present invention is to provide a method for updating presence information in a switching network, which can update presence information indicating presence and absence for each subscriber.

(Means for Solving the Problem) The present invention provides a logical communication number that uniquely identifies the subscriber to a subscriber, and uses the logical communication number in a location management unit to determine the presence, absence, and destination of the subscriber. The location management unit determines the destination of the destination subscriber when making a call, and the call #J control unit sends the calling subscriber terminal to the subscriber terminal corresponding to the destination of the destination subscriber. A method for updating presence information performed in a switching network by connecting a calling subscriber terminal and a destination subscriber terminal. starts monitoring the incoming call processing, the location management unit determines whether there is a response from the destination subscriber terminal within a certain period of time from the start of the incoming call processing, and the location management unit monitors the response. When it is determined that there is no subscriber, the presence information of the destination subscriber is changed from present to absent.

(Function) In the present invention, the location management unit monitors the incoming call processing of the call control unit, and if there is no response within a predetermined time, the presence information of the location management unit is changed from presence to absence. Change to

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a communication sequence diagram for explaining an embodiment of a method for updating presence information in a switching network according to the present invention.

In FIG. 1, for example, when subscriber A requests a connection from subscriber terminal 1 to subscriber B's logical communication number "5050" (step 1), location management unit 6
50", the physical number "2010" of the subscriber terminal 2 with which subscriber B has registered the location is searched, and the call control unit 4 is made to connect the subscriber terminal 1 and the subscriber terminal 2 (step 2).
.

At the same time as the connection between the subscriber terminal 1 and the subscriber terminal 2, the location management unit 6 starts measuring the time until receiving the incoming call acceptance message from the subscriber terminal 2. The call control unit 4 sends an incoming call acceptance message to the subscriber terminal 2, waits for the incoming call acceptance message that subscriber B sends back from the subscriber terminal 2, and upon receiving the incoming call acceptance message, the location management unit 6 The completion of reception of the incoming call is notified to (step 3). The location management unit 6 receives the message accepting the incoming call within a predetermined time, and does not change the presence information as "presence". Subscriber terminal 1
．． Step 2: Start communication once the connection is completed (Step 4)
, then disconnect the line and end communication (step 5)
.

Next, a case where subscriber B is away from subscriber terminal 2 with which the location has been registered will be explained. When subscriber A makes a connection request to subscriber B using logical communication number "5050", step 6) 9th place! The management unit 6 requests the call control unit 4 to connect the subscriber terminal 1 and the subscriber terminal 2 (step 7).
, starts measuring the time it takes to complete the connection. Thereafter, since the call control unit 4 does not receive the incoming call acceptance message even after a predetermined period of time has elapsed, the location management unit 6 causes the call control unit 4 to complete the incoming call processing and adds an absence notification. The location management unit 6 changes the presence information of subscriber B to "absent" (step 8).

(Effects of the Invention) As explained above, according to the present invention, the location management unit monitors the response from the called terminal, and if there is no response within a predetermined time, the location management unit monitors the response from the called terminal. Since the department changes the presence information from presence to absence, the presence information of presence/absence can be updated in accordance with the subscriber's logical communication number. As a result, there is no need for subscribers to register their absence, which can improve convenience.

[Brief explanation of drawings]

FIG. 1 is a communication sequence diagram for explaining an embodiment of the method for updating presence information in a switching network according to the present invention, and FIG.
Figures a) and (b) are diagrams for explaining the method used in the conventional absentee service, and Figures 3 (a) and (b) are diagrams for explaining the method used in the conventional connection service. It is a diagram. 1.2...Subscriber terminal, 4...Call control unit, 6...
Location management department.

Claims (1)

[Claims] A logical communication number that uniquely identifies the subscriber is given to the subscriber, and presence information indicating the subscriber's presence, absence, and destination is registered in a location management unit using the logical communication number. The location management unit determines the destination of the destination subscriber when the call is made, and the call control unit connects the calling subscriber terminal to the subscriber terminal corresponding to the destination of the destination subscriber. In the method for updating presence information according to the present invention, when a calling subscriber terminal and a destination subscriber terminal are connected, the location management unit starts monitoring the incoming call processing at the same time as the call control unit starts incoming call processing. , the location management unit determines whether there is a response from the destination subscriber terminal within a certain period of time from the start of the incoming call processing, and when the location management unit determines that there is no response, the destination subscriber terminal A method for updating presence information in an exchange network, characterized by changing presence information from presence to absence.