JP2015061176A - Device and program for outputting presence information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform unified management and output of presence information in a network system including the mixture of both communication devices, whose presence function systems are mutually different, and communication devices not conforming to a presence function, or either one type thereof.SOLUTION: A presence information output device 30 includes: a presence information storage unit 32 for storing presence information respectively corresponding to a plurality of communication devices; a relay unit 31 for relaying session control information between two IP telephones 10a, 10b among the plurality of communication devices; a presence information update unit 33 for detecting a presence change in either one of the IP telephones 10a, 10b, on the basis of the presence information stored in the presence information storage unit 32 and the session control information relayed by the relay unit 31, and according to the change of mode, updating the presence information stored in the presence information storage unit 32; and a presence information output unit 34 for outputting the updated presence information.

Description

  The present invention relates to a presence information output device and a presence information output program.

  There is known a presence service that allows users to share presence information indicating the state of a communication terminal connected to a network (online, offline, when a user is present, when a user is away, during a call, etc.) (for example, Patent Document 1).

JP 2009-290738 A

However, depending on the manufacturer (manufacturer) and model series of the communication terminal, there may be a difference in the presence function of the communication terminal. Also, a communication terminal that does not have a presence function cannot receive a presence service.
Therefore, the problem to be solved by the present invention is to centrally manage presence information in a network system in which communication devices having different presence function systems and / or communication devices having non-presence functions are mixed. Output.

  [1] In order to solve the above problems, a presence information output device according to an aspect of the present invention includes a presence information storage unit that stores presence information corresponding to each of a plurality of communication devices, and the plurality of communication devices. Based on the relay unit that relays session control information between any two communication devices, presence information stored in the presence information storage unit, and session control information relayed by the relay unit, A presence information update unit that detects the presence change and updates the presence information stored in the presence information storage unit according to the detected presence change; and the presence information updated by the presence information update unit A presence information output unit.

[2] In the presence information output device according to [1], the presence information update unit is configured to generate the message information based on presence information stored in the presence information storage unit and message information relayed by the relay unit. A change in presence in the communication apparatus that has transmitted is detected.
[3] In the presence information output device according to [1], the presence information update unit includes presence information stored in the presence information storage unit, message information relayed by the relay unit, and a response code for the message information. The presence change in the communication device that has received the message information is detected based on.
[4] In the presence information output device according to any one of [1] to [3], the session control information is SIP (Session Initiation Protocol) information.

  [5] In order to solve the above problem, a presence information output program according to an aspect of the present invention includes a computer including a presence information storage unit that stores presence information corresponding to each of a plurality of communication devices. Based on the relay unit that relays session control information between any two communication devices of the communication devices, the presence information stored in the presence information storage unit, and the session control information relayed by the relay unit, the second A presence information updating unit that detects a change in presence of one of the two communication devices, and updates presence information stored in the presence information storage unit according to the detected change in presence; and the presence information updating unit, It functions as a presence information output unit that outputs updated presence information.

  According to the present invention, presence information can be centrally managed and output in a network system in which communication devices having different presence function systems and / or communication devices having no presence function are mixed. .

It is a schematic block diagram of the communication system to which the presence information output device which is this embodiment is applied. It is a block diagram which shows the schematic function structure of the communication system in this embodiment. It is the conceptual diagram which showed the classification | category of the state, and the definition of presence based on this classification | category. FIG. 4 is a diagram in which the presence definition shown in FIG. 3 is associated with presence items in a conventional communication apparatus having a presence function (Example 1). FIG. 4 is a diagram in which the presence definition shown in FIG. 3 is associated with presence items in a conventional communication apparatus having a presence function (example 2). FIG. 4 is a diagram in which the presence definition shown in FIG. 3 is associated with presence items in a conventional communication apparatus having a presence function (example 3). It is a conceptual diagram which shows the policy of the association to presence in this embodiment. It is a figure which matches and shows the SIP sequence and presence transition when IP telephones perform an extension call. It is a figure which shows the presence of the message transmission side at the time of an extension call. It is a figure which shows the presence of the message receiving side at the time of an extension call. It is a figure which matches and shows the SIP sequence and presence transition in case an IP telephone performs an extension transfer. It is a figure which shows the presence of the message transmission side at the time of extension transfer. It is a figure which shows the presence of the message receiving side at the time of extension transfer. It is a figure which matches and shows the SIP sequence and presence transition when an IP telephone performs extension line hold | maintenance. It is a figure which shows the presence of the message transmission side at the time of an extension line holding | maintenance. It is a figure which shows the presence of the message receiving side at the time of an extension line holding | maintenance. It is a figure which matches and shows the SIP sequence and presence transition in case IP phone performs extension park hold. It is a figure which shows the presence of the message transmission side at the time of extension park holding. It is a figure which shows the presence of the message receiving side at the time of extension park holding. FIG. 3 is a diagram showing an association between a SIP sequence in which registry information is initially registered in a SIP server and presence transition in an initial state of the IP phone. It is a figure which shows the presence of the message transmission side at the time of initial registration. FIG. 3 is a diagram showing an association between a SIP sequence in which registry information is re-registered in a SIP server and presence transition within an IP telephone registry update period. It is a figure which shows the presence of the message transmission side at the time of re-registration within an update period. It is a figure which matches and shows the SIP sequence in which an IP telephone apparatus goes offline by timeout, and presence transition. It is a figure which shows the presence of the message transmission side by timeout. It is a flowchart which shows the process sequence in case the presence information output device which is this embodiment relays SIP information.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a communication system to which a presence information output apparatus according to an embodiment of the present invention is applied. As shown in the figure, the communication system includes an IP (Internet Protocol) phone 10a, an IP phone 10b, a SIP (Session Initiation Protocol) server 20, a presence information output device 30, a UC (Unified Communication) server 40, and the like. And network 50. In this communication system, IP phone 10 a, IP phone 10 b, SIP server 20, presence information output device 30, and UC server 40 are connected via a network 50.

  In the present embodiment, the communication system includes two IP telephones 10a and 10b. However, the number of these IP telephones is not limited to two. In the following description, when there is no need to distinguish between the IP telephone 10a and the IP telephone 10b, the IP telephones 10a and 10b may be referred to as the IP telephone 10 in some cases.

The network 50 is a communication line network capable of data communication by IP. The network 50 may include a local area network (LAN) or may be connected to the Internet.
The IP telephone 10a and the IP telephone 10b are communication apparatuses (terminals) that realize a voice call function by transmitting voice data to each other by, for example, VoIP (Voice over Internet Protocol).
The SIP server 20 is a communication control device that performs call control for the IP telephone 10a and the IP telephone 10b to establish a SIP session.

  The presence information output device 30 relays session control information communicated between each of the IP telephones 10a and 10b and the SIP server 20. This session control information includes, for example, SIP information (SIP signal), H.264, etc. 323, H.H. 248 / Megaco, Q.M. 931, H.M. 320, H.R. 324, H.H. This is control information according to the H.324 / M (Mobile) protocol. In the present embodiment, an example in which SIP information is used as session control information will be described. The presence information output device 30 stores the latest presence information (status information) of each of the IP telephones 10a and 10b. The presence information is information indicating the state of the operator (user) of the IP telephone 10. Specific contents of the presence information will be described later. The presence information output device 30 detects a change in state (change in presence) based on the stored presence information and the relayed SIP information, stores the presence information after the change, and outputs it to the UC server 40.

  The UC server 40 fetches presence information corresponding to each of the IP telephones 10a and 10b output from the presence information output device 30, and realizes a unified communication service according to the presence information.

  FIG. 2 is a block diagram showing a schematic functional configuration of the communication system in the present embodiment. As shown in the figure, to the presence information output device 30, an IP telephone 10a, an IP telephone 10b, a SIP server 20, and a UC server 40 are connected. In this connection, the presence information output device 30 relays communication between each of the IP telephones 10a and 10b and the SIP server. The presence information output device 30 relays communication between the IP telephone 10a and the IP telephone 10b.

A functional configuration of the presence information output device 30 will be described.
As shown in FIG. 2, the presence information output device 30 includes a relay unit 31, a presence information storage unit 32, a presence information update unit 33, and a presence information output unit 34.

  The relay unit 31 relays session control information between any two communication devices among a plurality of communication devices. Specifically, the relay unit 31 relays SIP information between each of the IP telephones 10a and 10b and the SIP server 20. The relay unit 31 relays data between the IP telephone 10a and the IP telephone 10b.

  The presence information storage unit 32 stores presence information corresponding to each of the plurality of communication devices. Specifically, the presence information storage unit 32 stores, for example, the latest presence information corresponding to each of the IP telephones 10a and 10b. The presence information storage unit 32 is realized by, for example, a magnetic hard disk device or a semiconductor storage device.

The presence information update unit 33 detects a change in presence of one of the two communication devices based on the presence information stored in the presence information storage unit 32 and the session control information relayed by the relay unit 31. Then, the presence information update unit 33 updates the presence information stored in the presence information storage unit 32 in accordance with the detected change in presence. Thereby, presence is changed.
For example, the presence information update unit 33, based on the latest presence information stored in the presence information storage unit 32 and the message information (message) relayed by the relay unit 31, transmits the presence information in the communication device that has transmitted the message information. Detect changes.
Further, for example, the presence information update unit 33 determines the message information based on the latest presence information stored in the presence information storage unit 32, the message information relayed by the relay unit 31, and the response code (response) for the message information. A change in presence in the communication device that received the message is detected. Details regarding detection of these changes in presence will be described later.

  The presence information output unit 34 outputs the presence information updated by the presence information update unit 33. Specifically, for example, the presence information output unit 34 supplies updated presence information corresponding to the IP telephone 10 to the UC server 40 together with information for identifying the IP telephone 10.

Here, the definition of presence in the present embodiment will be described.
FIG. 3 is a conceptual diagram showing the classification of states and the definition of presence based on this classification. As shown on the left side of the figure, the status is classified into two categories: “presence / absence” on the network of the communication device and “applicability” of the user. The category “presence / absence” is classified into “online”, “offline”, and “other” of the communication device. “Online” means, for example, that the communication device is in an active state on the network and can communicate normally. “Offline” means, for example, that the communication apparatus is in an inactive state on the network, or is turned off. “Others” is, for example, that the communication device is in an unguessable state.

  The category “Availability” is classified into “Available”, “Ambiguous”, and “Not available” when the category “Presence / absence” is “Online”. “Available” indicates a state in which the user can respond to the communication device. “Unsupported” here indicates a state in which the user cannot respond to the communication device. “Ambiguous” refers to a state in which it is not clear whether the user can respond to the communication device. Further, the category “applicability” is classified as “impossible” when the category “presence / absence” is “offline”. “Unsupported” here refers to a state in which the user cannot respond because the communication device is inactive. The category “applicability” is classified as “unknown” when the category “presence / absence” is “other”. “Unknown” refers to a state in which the correspondence of the user is unknown because the communication device is in a state that cannot be estimated.

  Based on the state thus classified, in this embodiment, as shown on the right side of FIG. 3, the presence is classified. That is, when the communication device is “online” and the user is “available”, the presence is “response”. Further, when the communication apparatus is “online” and the user is “ambiguous”, the presence is assumed to be “ambiguous”. Further, it is assumed that the presence is “response impossible” when the communication device status is “online” and the user status is “unavailable”. Further, it is assumed that the presence is “offline” when the state of the communication device is “offline” and the state of the user is “unavailable”. Further, when the communication device state is “other” and the user state is “unknown”, the presence is assumed to be “other”.

  4, FIG. 5, and FIG. 6 are diagrams in which the presence definition shown in FIG. 3 is associated with the presence items in a conventional communication apparatus having a presence function. In the example of FIG. 4, there is no presence item corresponding to the “ambiguous state” of the presence definition. In the example of FIGS. 5 and 6, there is no presence item corresponding to “offline” in the presence definition. As illustrated in FIGS. 4 to 6, the presence item in the conventional communication apparatus can be associated with the presence definition shown in FIG. 3. That is, as a representative example, the presence item “can be contacted” is associated with the presence “response possible”. Also, the presence item “meeting”, “seating”, “work time” and the like are associated with the presence “ambiguous state”. Also, the presence item “call is unavailable”, “post processing”, “LOGOFF” and the like are associated with the presence “response impossible”. Also, presence items “offline”, “out of service area”, “cable disconnection”, “POWER OFF”, and the like are associated with the presence “offline”. Also, presence items “unknown”, “error”, and the like are associated with the presence “others”.

  In the communication system according to the present embodiment, the presence information output device 30 takes in SIP information transmitted on the network 50, detects a change in presence based on the SIP information and the current presence, and determines the presence after the change. decide. In the present embodiment, the presence information output device 30 includes the state (terminal state) of the IP telephone 10 (communication device), the presence / absence of a signal (SIP information), the presence / absence of a responder (user), the message and the response. In response, the presence is determined. Next, the policy for associating with presence will be described in detail.

  FIG. 7 is a conceptual diagram showing a policy of association with presence in the present embodiment. In the figure, when the IP telephone 10 is off-hook (line connection), the presence information update unit 33 of the presence information output device 30 associates the SIP information related to the telephone with the presence “response impossible” and the presence information “response impossible”. Get. When the IP telephone 10 is on-hook (line disconnection), the presence information update unit 33 of the presence information output device 30 obtains presence information by associating as follows. That is, when the presence information update unit 33 fetches the SIP information from the relay unit 31 and the SIP information is based on the user's action, the presence information update unit 33 associates the SIP information with the presence “response possible”, Obtain presence information “Available”. Further, if the presence information update unit 33 fetches SIP information from the relay unit 31 and the SIP information is based on the terminal specifications, the presence information update unit 33 associates the SIP information with the presence “ambiguous state”, and the presence information Get an “ambiguous state”. Further, the presence information update unit 33 associates the presence “ambiguous state” and obtains the presence information “ambiguous state” when the SIP information is not captured from the relay unit 31 and within the registry update period. Also, the presence information update unit 33 associates the presence “offline” and obtains the presence information “offline” when the SIP information is not captured from the relay unit 31 and is outside the registry update period.

  As described above, in the communication system according to the present embodiment, the presence of the SIP information (representing the message or response and the direction) transmitted and received by the IP telephone 10 and the presence of the IP telephone 10 that does not have the presence function. Presence information can be acquired.

  Next, a specific example of association between SIP information and presence according to the present embodiment will be described. Presence changes depending on user actions (acts). In the present embodiment, since the presence change (transition) is inferred based on the SIP information, as a rule, the transmission timing of the SIP information is set as the presence change timing. However, as an exception, as will be described later, the presence change timing may be determined using the timing after timeout instead of the SIP information transmission timing.

  FIG. 8 is a diagram showing the SIP sequence and presence transition in association with each other when an IP phone makes an extension call. FIG. 9 is a diagram showing the presence on the message transmission side during an extension call. FIG. 10 is a diagram showing the presence on the message receiving side during an extension call. Hereinafter, the relationship between the SIP information and the presence during the extension call will be described with reference to FIGS. However, in FIG. 8, two IP telephones 10 are described as a terminal A and a terminal B.

  Both the terminal A and the terminal B are in an on-hook state in the initial state, and their presence is “response possible”. That is, the presence information storage unit 32 of the presence information output device 30 stores the presence information “response possible” for each of the terminal A and the terminal B.

  When terminal A, which is the transmission source, enters an off-hook state, terminal A transmits an “INVITE” request that is a message to the SIP server (SIP server 20) via relay unit 31 of presence information output device 30. The relay unit 31 supplies the “INVITE” request to the presence information update unit 33. The presence information update unit 33 takes in an “INVITE” request supplied by the relay unit 31. The presence information update unit 33 transmits an “INVITE” request in response to the current presence information “response available” read from the presence information storage unit 32 and the “INVITE” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response impossible”, and the presence information “response impossible” is written in the presence information storage unit 32 and updated (see FIG. 9).

  Next, when the terminal B that is the destination is in an off-hook state, the terminal B transmits a “200 OK” code that is a response to the SIP server via the relay unit 31. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 receives an “INVITE” request that is a message relayed by the relay unit 31, the current presence information “response is possible” of the destination that is read from the presence information storage unit 32, and “ In response to the “200 OK” code, the presence of the terminal B after transmitting the “200 OK” code is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (FIG. 10).

  A case where the call between the terminal A and the terminal B is terminated and the terminal A enters the on-hook state before the terminal B will be described. When terminal A enters an on-hook state, terminal A transmits a “BYE” request to the SIP server via relay unit 31. The relay unit 31 supplies the “BYE” request to the presence information update unit 33. The presence information update unit 33 captures a “BYE” request supplied from the relay unit 31. The presence information update unit 33 transmits a “BYE” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “BYE” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response possible”, and the presence information storage unit 32 is updated with this presence information “response possible” (see FIG. 9).

  Next, in response to receiving the “BYE” request, the terminal B transmits a “200 OK” code to the SIP server via the relay unit 31. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 captures the “BYE” request that is a message relayed by the relay unit 31, the current presence information “response impossible” of the destination that is read from the presence information storage unit 32, and the “ In response to the “200 OK” code, the presence of the terminal B after transmitting the “200 OK” code is determined as “response possible”, and the presence information storage unit 32 is updated with this presence information “response possible” (FIG. 10).

  When the call between the terminal A and the terminal B ends and the terminal B enters the on-hook state before the terminal A, the terminal B becomes the message transmission side (see FIGS. 9 and 10).

  FIG. 11 is a diagram showing the SIP sequence and presence transition associated with each other when the IP telephone performs extension transfer. FIG. 12 is a diagram showing the presence on the message transmission side during extension transfer. FIG. 13 is a diagram showing the presence on the message receiving side during extension transfer. Hereinafter, the relationship between SIP information and presence at the time of extension transfer will be described with reference to FIGS. However, in FIG. 11, three IP telephones 10 are described as terminal A, terminal B, and terminal C, and when terminal A and terminal B are in a call, terminal A makes a transfer request to terminal C. 3 shows an example of realizing a call between the terminal B and the terminal C. Assume that the initial presence of terminal C is “response possible”.

  When the terminal A and the terminal B are in an extension call, that is, when the presence of both the terminal A and the terminal B is “cannot be supported”, the “hold button” (self-hold) of the terminal A is pressed by the transfer person, thereby the terminal A Transmits an “INVITE” request to the terminal B via the relay unit 31 of the presence information output device 30. The relay unit 31 supplies the “INVITE” request to the presence information update unit 33. The presence information update unit 33 takes in an “INVITE” request supplied by the relay unit 31. The presence information update unit 33 transmits an “INVITE” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “INVITE” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (see FIG. 12).

  During the self-hold, when the “caller button” of the terminal A is pressed by the transfer person, the terminal A transmits an “INVITE” request to the terminal C via the relay unit 31 of the presence information output device 30. The relay unit 31 supplies the “INVITE” request to the presence information update unit 33. The presence information update unit 33 takes in an “INVITE” request supplied by the relay unit 31. The presence information update unit 33 transmits an “INVITE” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “INVITE” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (see FIG. 12).

  Next, when the terminal C of the called party enters an off-hook state, the terminal C transmits a “200 OK” code to the terminal A via the relay unit 31. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 receives an “INVITE” request that is a message relayed by the relay unit 31, the current presence information “response is possible” of the destination that is read from the presence information storage unit 32, and “ In response to the “200 OK” code, the presence of the terminal C after transmitting the “200 OK” code is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (FIG. 13).

  The terminal A transmits a “REFER” request to the terminal B via the relay unit 31 when the terminal A of the transferer enters the on-hook state during self-holding. The relay unit 31 supplies the “REFER” request to the presence information update unit 33. The presence information update unit 33 takes in a “REFER” request supplied by the relay unit 31. The presence information updating unit 33 transmits a “REFER” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “REFER” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response possible”, and the presence information storage unit 32 is updated with this presence information “response possible” (see FIG. 12).

  A case where the call between the terminal B and the terminal C after the transfer ends and the terminal C enters the on-hook state before the terminal B will be described. When the terminal C enters the on-hook state, the terminal C transmits a “BYE” request to the terminal B via the relay unit 31. The relay unit 31 supplies the “BYE” request to the presence information update unit 33. The presence information update unit 33 captures a “BYE” request supplied from the relay unit 31. The presence information update unit 33 transmits a “BYE” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “BYE” request fetched from the relay unit 31. The presence of the subsequent terminal C is determined as “response possible”, and the presence information storage unit 32 is updated with this presence information “response possible” (see FIG. 12).

  Next, the terminal B transmits a “200 OK” code to the terminal C via the relay unit 31 in response to receiving the “BYE” request. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 captures the “BYE” request that is a message relayed by the relay unit 31, the current presence information “response impossible” of the destination that is read from the presence information storage unit 32, and the “ In response to the “200 OK” code, the presence of the terminal B after transmitting the “200 OK” code is determined as “response possible”, and the presence information storage unit 32 is updated with this presence information “response possible” (FIG. 13).

  In addition, when the call between the terminal B and the terminal C after the transfer ends and the terminal B enters the on-hook state before the terminal C, the terminal B becomes the message transmission side (see FIGS. 12 and 13). .

  FIG. 14 is a diagram showing the SIP sequence and presence transition in association with each other when the IP telephone sets an extension line hold. FIG. 15 is a diagram showing the presence on the message transmission side when the extension line is on hold. FIG. 16 is a diagram showing the presence of the message receiving side when the extension line is on hold. Hereinafter, the relationship between the SIP information and the presence when the extension line is reserved will be described with reference to FIGS. However, in FIG. 14, two IP telephones 10 are described as a terminal A and a terminal B.

  When the terminal A and the terminal B are in a call, that is, when the presence of both the terminal A and the terminal B is “unavailable”, the “hold button” of the terminal A is pressed by the caller, whereby the terminal A becomes “INVITE” The request is transmitted to the terminal B via the relay unit 31 of the presence information output device 30. The relay unit 31 supplies the “INVITE” request to the presence information update unit 33. The presence information update unit 33 takes in an “INVITE” request supplied by the relay unit 31. The presence information update unit 33 transmits an “INVITE” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “INVITE” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (see FIG. 15).

  Next, when the terminal B receives the “INVITE” request when the terminal A and the terminal B are in a call, the terminal B transmits a “200 OK” code to the terminal A via the relay unit 31. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 captures the “INVITE” request that is a message relayed by the relay unit 31, the current presence information “response impossible” of the destination that is read from the presence information storage unit 32, and the “ In response to the “200 OK” code, the presence of the terminal B after transmitting the “200 OK” code is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (FIG. 16).

  While the line is on hold, when the “hold button” (hold release) of terminal A is pressed by the caller, terminal A sends an “INVITE” request to terminal B via relay unit 31 of presence information output device 30. Send. The relay unit 31 supplies the “INVITE” request to the presence information update unit 33. The presence information update unit 33 takes in an “INVITE” request supplied by the relay unit 31. The presence information update unit 33 transmits an “INVITE” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “INVITE” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (see FIG. 14).

  Next, when the terminal B receives the “INVITE” request when the terminal A and the terminal B are on line, the terminal B transmits a “200 OK” code to the terminal A via the relay unit 31. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 captures the “INVITE” request that is a message relayed by the relay unit 31, the current presence information “response impossible” of the destination that is read from the presence information storage unit 32, and the “ In response to the “200 OK” code, the presence of the terminal B after transmitting the “200 OK” code is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (FIG. 16).

  FIG. 17 is a diagram showing the SIP sequence and presence transition in association with each other when the IP telephone sets extension park hold. FIG. 18 is a diagram showing the presence on the message transmission side when extension park is on hold. FIG. 19 is a diagram showing the presence of the message receiving side when the extension park is on hold. Hereinafter, the relationship between the SIP information and the presence when the extension line is reserved will be described with reference to FIGS. However, in FIG. 17, two IP telephones 10 are described as a terminal A and a terminal B.

  When the terminal A is in a call, that is, when the presence of the terminal A is “response impossible”, when the “hold button” of the terminal A is pressed by the caller, the terminal A outputs a “REFER” request to the presence information output. The data is transmitted to the SIP server (SIP server 20) via the relay unit 31 of the device 30. The relay unit 31 supplies the “REFER” request to the presence information update unit 33. The presence information update unit 33 takes in a “REFER” request supplied by the relay unit 31. The presence information updating unit 33 transmits a “REFER” request in response to the current presence information “response impossible” of the sender read from the presence information storage unit 32 and the “REFER” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response possible”, and the presence information storage unit 32 is updated with this presence information “response possible” (see FIG. 18).

  When the terminal B receives the “INVITE” request in the extension park hold state, the terminal B transmits the “200 OK” code to the SIP server via the relay unit 31. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 captures the “INVITE” request that is a message relayed by the relay unit 31, the current presence information “response impossible” of the destination that is read from the presence information storage unit 32, and the “ In response to the “200 OK” code, the presence of the terminal B after transmitting the “200 OK” code is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (FIG. 19).

  While the park is on hold, when the “hold button” (hold release) of terminal A is pressed by the caller, terminal A sends an “INVITE” request to terminal B via relay unit 31 of presence information output device 30. Send. The relay unit 31 supplies the “INVITE” request to the presence information update unit 33. The presence information update unit 33 takes in an “INVITE” request supplied by the relay unit 31. The presence information update unit 33 transmits an “INVITE” request in response to the current presence information “response available” read from the presence information storage unit 32 and the “INVITE” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined as “response impossible”, and the presence information storage unit 32 is updated with the presence information “response impossible” (see FIG. 18).

  Next, when the terminal B receives the “INVITE” request while the extension park is on hold, the terminal B transmits a “200 OK” code to the SIP server via the relay unit 31. The relay unit 31 supplies the “200 OK” code to the presence information update unit 33. The presence information update unit 33 takes in the “200 OK” code supplied by the relay unit 31. The presence information update unit 33 receives an “INVITE” request that is a message relayed by the relay unit 31, the current presence information “response is possible” of the destination that is read from the presence information storage unit 32, and “ In response to the “200 OK” code, the presence of the terminal B after transmitting the “200 OK” code is determined as “response impossible”, and the presence information storage unit 32 is updated with this presence information “response impossible” (FIG. 19).

  FIG. 20 is a diagram showing the SIP sequence in which the IP telephone 10 initially registers registry information in the SIP server 20 and the presence transition in association with each other in the initial state of the IP telephone. FIG. 21 is a diagram showing presence on the message transmission side at the time of initial registration. Hereinafter, the relationship between SIP information and presence at the time of initial registration will be described with reference to FIGS. 21 and 21 together. However, in FIG. 20, the IP telephone 10 is described as a terminal A.

  Assume that the initial presence of terminal A is “offline”. When the terminal A is activated depending on whether the terminal A is powered on or reset, the terminal A sends a “REGISTER” request as a message to the relay unit 31 of the presence information output device 30. To the SIP server (SIP server 20). The relay unit 31 supplies the “REGISTER” request to the presence information update unit 33. The presence information update unit 33 takes in a “REGISTER” request supplied by the relay unit 31. The presence information update unit 33 transmits a “REGISTER” request in response to the current presence information “offline” of the sender read from the presence information storage unit 32 and the “REGISTER” request fetched from the relay unit 31. The presence of the terminal A is determined as an “ambiguous state”, and the presence information storage unit 32 is updated with the presence information “unclear state” (see FIG. 21).

  Next, the presence information update unit 33 updates the presence information storage unit 32 with the presence information “Ambiguous”, and after a predetermined time (for example, 10 seconds) has passed, 32 is updated (see FIG. 21).

  FIG. 22 is a diagram showing an association between the SIP sequence in which the IP telephone 10 re-registers registry information in the SIP server 20 and the presence transition within the registry update period of the IP telephone. FIG. 23 is a diagram showing the presence on the message transmission side at the time of re-registration within the update period. Hereinafter, the relationship between the SIP information and the presence at the time of re-registration within the update period will be described with reference to FIGS. 22 and 23 together. However, in FIG. 22, the IP telephone 10 is described as a terminal A.

  Within the update period after the terminal A is initially registered, the terminal A transmits a “REGISTER” request to the SIP server (SIP server 20) via the relay unit 31 of the presence information output device 30. The relay unit 31 supplies the “REGISTER” request to the presence information update unit 33. The presence information update unit 33 takes in a “REGISTER” request supplied by the relay unit 31. The presence information updating unit 33 transmits a “REGISTER” request in response to the current presence information “response available” of the sender read from the presence information storage unit 32 and the “REGISTER” request fetched from the relay unit 31. The presence of the subsequent terminal A is determined to be “ambiguous state”, and the presence information storage unit 32 is updated with this presence information “ambiguous state” (see FIG. 23).

  Next, the presence information update unit 33 updates the presence information storage unit 32 with the presence information “Ambiguous”, and after a predetermined time (for example, 10 seconds) has passed, 32 is updated (see FIG. 23).

  FIG. 24 is a diagram illustrating a correspondence between a SIP sequence in which an IP telephone goes offline due to a timeout and presence transition. FIG. 25 is a diagram illustrating presence on the message transmission side due to timeout. Hereinafter, the relationship between SIP information and presence due to timeout will be described with reference to FIGS. 24 and 25 together. However, in FIG. 24, the IP telephone 10 is described as a terminal A.

  After the initial registration or re-registration of the terminal A, when a predetermined update period elapses after the presence becomes “response possible” (when a timeout occurs), the presence information update unit 33 determines the presence as “offline”. The presence information storage unit 32 is updated with the presence information “offline” (see FIG. 25).

Next, the operation of the presence information output device 30 according to the embodiment of the present invention will be described.
FIG. 26 is a flowchart showing a processing procedure when the presence information output device 30 relays SIP information. However, in the processing according to this flowchart, the IP telephone 10 on the transmission side (outgoing side) is the IP telephone 10a, and the IP telephone 10 on the reception side (incoming side) is the IP telephone 10b.
In step S 1, the relay unit 31 takes in a message from the IP telephone 10 a on the transmission side and supplies this message to the presence information update unit 33.
Next, in step S2, the presence information update unit 33 reads presence information for the message transmission source (IP telephone 10a) from the presence information storage unit 32.

Next, in step S3, the presence information update unit 33 changes the presence of the IP telephone 10a that transmitted the message based on the presence information read from the presence information storage unit 32 and the message received from the relay unit 31. Detect. Then, the presence information update unit 33 updates the presence information stored in the presence information storage unit 32 with new presence information in accordance with the detected change in presence.
Next, in step S4, the presence information output unit 34 outputs the presence information updated by the presence information update unit 33.

Next, in step S <b> 5, the relay unit 31 takes in the response code from the IP telephone 10 b on the receiving side and supplies this response code to the presence information update unit 33.
Next, in step S <b> 6, the presence information update unit 33 reads presence information of the message transmission destination (IP telephone 10 b) from the presence information storage unit 32.

Next, in step S7, the presence information update unit 33, based on the presence information read from the presence information storage unit 32, the message relayed by the relay unit 31, and the response code for the message fetched from the relay unit 31, A change in the presence of the IP telephone 10b that has received the message is detected. Then, the presence information update unit 33 updates the presence information stored in the presence information storage unit 32 with new presence information in accordance with the detected change in presence.
Next, in step S8, the presence information output unit 34 outputs the presence information updated by the presence information update unit 33.

  As described above in detail, the presence information output device 30 according to the present embodiment includes the presence information storage unit 32 that stores presence information corresponding to each of a plurality of communication devices. Further, the presence information output device 30 includes a relay unit 31 that relays session control information between any two of the plurality of communication devices. The presence information output device 30 detects a change in presence of one of the two communication devices based on the presence information stored in the presence information storage unit 32 and the session control information relayed by the relay unit 31. The presence information updating unit 33 updates the presence information stored in the presence information storage unit 32 in accordance with the detected change in presence. The presence information output device 30 includes a presence information output unit 34 that outputs the presence information updated by the presence information update unit 33.

  With this configuration, the presence information output device 30 takes in the transmitted session control information, detects a change in presence based on the session control information and the current presence, and determines the presence after the change. Therefore, by applying the presence information output device 30, it is possible to obtain common presence information even in a communication system including a communication device having a different presence function or a communication device having no presence function. , Can provide a unified presence service.

  As described above, according to the present embodiment, presence information is centrally managed and output in a network system in which communication devices having different presence function systems and / or communication devices having non-presence functions are mixed. can do.

  This embodiment is an example of calls, transfers, line hold, and park hold in extension communication. Note that this embodiment can also be applied to calls, transfers, line hold, and park hold in external line communication. In the case of this external line communication, the presence information output device 30 performs the same processing as the example of the internal line communication in the present embodiment, except that the presence information output device 30 does not acquire the presence of the communication device on the public network side.

  In the present embodiment, the presence information output device 30 includes the relay unit 31. In addition to this, the relay unit 31 may be separated from the presence information output device 30.

  Moreover, you may make it implement | achieve a part of function of the presence information output device 30 which is embodiment mentioned above with a computer. In this case, a presence information output program for realizing the function is recorded on a computer-readable recording medium, the presence information output program recorded on the recording medium is read into the computer system, and the computer system executes the program. Thus, the function may be realized. The computer system includes an operating system (OS) and hardware of peripheral devices. The computer-readable recording medium is a portable recording medium such as a flexible disk, a magneto-optical disk, an optical disk, or a memory card, and a storage device such as a magnetic hard disk or a solid state drive provided in the computer system. Furthermore, a computer-readable recording medium dynamically holds a program for a short time, such as a computer network such as the Internet, and a communication line when transmitting a program via a telephone line or a cellular phone network. In addition, a server that holds a program for a certain period of time, such as a volatile memory inside a computer system serving as a server device or a client in that case, may be included. Further, the presence information output program may be for realizing a part of the above-described functions, and further for realizing the above-described functions by a combination with a program already recorded in the computer system. There may be.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the specific structure is not restricted to that embodiment, The design of the range which does not deviate from the summary of this invention, etc. are included.

  DESCRIPTION OF SYMBOLS 10a ... IP telephone, 10b ... IP telephone, 20 ... SIP server, 30 ... Presence information output device, 31 ... Relay part, 32 ... Presence information storage part, 33 ... Presence information update part, 34 ... Presence information output part, 40 ... UC server, 50 ... network

Claims (5)

A presence information storage unit that stores presence information corresponding to each of the plurality of communication devices;
A relay unit that relays session control information between any two communication devices of the plurality of communication devices;
Based on the presence information stored in the presence information storage unit and the session control information relayed by the relay unit, a change in presence of either one of the two communication devices is detected, and the detected change in presence is detected. A presence information update unit for updating presence information stored in the presence information storage unit;
A presence information output unit for outputting the presence information updated by the presence information update unit;
A presence information output device. The presence information update unit detects a change in presence in a communication device that has transmitted the message information based on presence information stored in the presence information storage unit and message information relayed by the relay unit;
The presence information output device according to claim 1. The presence information update unit, based on the presence information stored in the presence information storage unit, the message information relayed by the relay unit, and the response code for the message information, the presence information in the communication device that has received the message information. Detect changes,
The presence information output device according to claim 1. The session control information is SIP (Session Initiation Protocol) information.
The presence information output device according to any one of claims 1 to 3. A computer including a presence information storage unit that stores presence information corresponding to each of a plurality of communication devices,
A relay unit that relays session control information between any two communication devices of the plurality of communication devices;
Based on the presence information stored in the presence information storage unit and the session control information relayed by the relay unit, a change in presence of either one of the two communication devices is detected, and the detected change in presence is detected. A presence information update unit for updating presence information stored in the presence information storage unit;
A presence information output unit for outputting the presence information updated by the presence information update unit;
Presence information output program to function as

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