JP4740735B2 - Dynamic control method and apparatus for multiple communication terminals - Google Patents

Description

  The present invention generally relates to an IP network based on the SIP (Session Initiation Protocol) / Presence architecture, and more particularly to a method and apparatus used for dynamic control of a plurality of communication terminals in this type of IP network.

  With the development of communication technology, in the current information society, various communication systems such as a fixed telephone system, a mobile telephone system, and a PC telephone (IP telephone) system using the Internet simultaneously exist. The existence of multiple communication systems at the same time can be said to have almost realized the dream of people making calls anytime and anywhere.

  For example, when a user is working in the office, he uses a landline phone to negotiate with a customer, and when the user is out or traveling, use a mobile phone. It is also possible to communicate with family members. In addition, even when a user is surfing the Internet, it is possible to contact a friend whom he / she met with chat software using a PC phone.

  Thus, with the diversification of available communication devices, people can exchange information with each other very easily.

  However, there are still deficiencies. When a user receives a phone call from a family member or friend, the called user cannot select an appropriate communication terminal from a plurality of available communication terminals and answer the call. More specifically, for example, if a user receives a call to a mobile phone made by someone, the user can only accept the call on that mobile phone, which is more suitable for the situation, For example, it is not possible to answer calls using a landline telephone at home. Therefore, the user cannot reduce the communication cost or save the battery of the mobile phone.

  In order to overcome such deficiencies, a solution for managing multiple terminals using the SIP / Presence platform has been presented by the IETF (Internet Special Technology Research Committee) (see Non-Patent Document 1).

  FIG. 4 is a schematic diagram of a multi-terminal management solution program disclosed in Non-Patent Document 1.

  As shown in FIG. 4, when the user A makes a call with the user B, the user A transmits an INVITE request for calling the user B to the SIP server 100 in the IP network. The SIP server 100 receives the INVITE request transmitted by the user A, and searches the presence server 110 for a communication terminal that the user B can respond to the call. Presence server 110 stores communication terminal information that user B can respond to in advance. In the example of FIG. 4, the mobile phone 130, the PC phone 140, and the fixed phone 150 are stored in advance as communication terminals that the user B can respond to calls.

  The SIP server 100 searches that the mobile phone 130, the PC phone 140, and the landline phone 150 are communication terminals that the user B can answer the call, and then searches for the mobile phone 130, the PC phone 140, and the landline phone. An INVITE request for requesting a call is transmitted to each of 150 at the same time.

  After receiving the INVITE request from the SIP server 100, the mobile phone 130, the PC phone 140, and the fixed phone 150 each ring a ring tone and notify the user B of the call from the user A.

  Upon receiving this notification, the user B can select a communication terminal suitable for the situation and respond to the call as necessary.

  Thereafter, in the example of FIG. 4, the user B selects the fixed telephone 150 and responds to the call of A. In response, the SIP server 100 establishes a conversation connection between the fixed telephone 150 of the user B and the user A. As a result, the user B can make a call with the user A using the fixed telephone 150.

As described above, since the signal process between the SIP server 100 and the mobile phone 130 of the user B, the PC phone 140, and the fixed phone 150 is like a single fork, the solution for managing multiple terminals is “fork” ( forking) is also called a resolution program.
J. Rosenberg, 8 others, "RFC-3261 SIP: Session Initiation Protocol", IETF, June 2002

  As described above, the “fork” solution program allows the user to select one communication terminal suitable for the situation from a plurality of communication terminals set in advance and respond to the call. By doing so, it is possible to remove the deficiency that the user cannot select the communication terminal that responds to the call.

  However, there are still some problems with this “fork” resolution program.

  First, in order to call one user, an INVITE request must be simultaneously transmitted to each of a plurality of communication terminals that can be used by the user. For this purpose, it is necessary to perform signal multicasting. This signal multicasting not only consumes valuable communication resources due to a large number of messages, but also requires very difficult multicast synchronization control.

  Furthermore, the user needs to install a usable communication terminal and store the information in the presence server in advance. This means that, for example, a user who frequently changes his work location or travels must perform such work frequently, which places a great burden on the user.

  In addition, the user can only select from a limited number of communication terminals installed in advance, and cannot dynamically select a communication terminal suitable for the situation as needed.

  An object of the present invention is to provide a method and apparatus for dynamic control of a plurality of communication terminals used in an IP network, thereby solving the aforementioned problems.

  According to one embodiment of the present invention, a calling communication terminal and two or more called communication terminals are connected via an IP network, and transmission of a call from the calling communication terminal is performed. A SIP (Session Initiation Protocol) server to transfer, a presence (state management) server that manages the state of the called communication terminal, a control server that controls outgoing calls to any of the called communication terminals, Is a dynamic control method for a plurality of communication terminals executed by a control server in a network system connected to an IP network, wherein (a) another incoming call is transmitted by a called communication terminal that has received a call. A step of receiving the multi-terminal management information instructing the communication terminal on the side to respond to the call; and (b) based on the received multi-terminal management information, the calling communication terminal that originated the call another A step of generating an INVITE request for calling the communication terminal on the call side; and (c) sending the generated INVITE request to the corresponding SIP server, so that the SIP server can generate another request based on the received INVITE request. And a step of calling a communication terminal on the called side.

  Other objects and advantages of the present invention can be understood more clearly and easily by referring to the attached drawings and the content of the claims, as well as a more complete understanding of the present invention. It becomes. In all the drawings, like symbols represent similar or corresponding features or functions.

  By using the method and apparatus for dynamic control of a plurality of communication terminals according to the present invention, when the calling user desires a call with the called user, the calling user can communicate with the called user as one communication. By simply sending a call request to the terminal, the user on the called side receives the call request for the user by the communication terminal, and without previously storing the available communication terminal in the presence server in the IP network, It is possible to dynamically select a communication terminal that responds to a call as necessary. And it has no effect on the calling user.

  Hereinafter, a method and apparatus for dynamic control of a plurality of communication terminals according to an embodiment of the present invention will be described in detail with reference to the drawings.

  The method and apparatus used for dynamic control of a plurality of communication terminals in the present invention are realized by a SIP / Presence system for managing real-time applications in an IP network.

  FIG. 1 is a configuration block diagram of a SIP / Presence system.

  The SIP / Presence system shown in FIG. 1 includes a user A communication terminal 90 of a user A who is a calling side user, and a communication terminal 200 (a mobile phone 130, a PC phone 140 and a fixed phone) which can be used by a user B which is a called side user. Phone 150). Further, the SIP / Presence system includes a SIP server 100, a presence server 110, and a control server 120. Further, the mobile phone 130 includes a control module 160 therein. These are connected via an IP network 170.

  In the SIP / Presence system of FIG. 1, one SIP-URI is allocated to each of the communication terminals 200, that is, the mobile phone 130, the PC phone 140, and the fixed phone 150. The SIP-URI is an identifier used to uniquely identify the communication terminal 200 in the SIP / Presence system. The SIP-URI is usually configured by a general identifier of the communication terminal 200 or the user and a domain name of the domain registered by the communication terminal 200 or the user in the SIP / Presence system.

  For example, when the general-purpose identifier (for example, ISDN number) of the fixed telephone 150 is “86-10-12345678” and the domain registered in the SIP / Presence system is “office.net” The SIP-URI of the fixed telephone 150 is “tel: 86-10-12345678@office.net”.

  If the general identifier (for example, MSISDN number) of the mobile phone 130 is “13912345678” and the domain registered in the SIP / Presence system is “mobile.com”, the mobile phone 130 The SIP-URI is “tel: 13912345678@mobile.com”.

  Similarly, when the general-purpose identifier (for example, user name) of the PC phone 140 is “alice” and the domain registered in the SIP / Presence system is “company.com”, the PC phone 140 The SIP-URI of 140 is “alice@company.com”.

  As described above, the SIP-URI includes not only general-purpose identifiers of the communication terminal 200 and the user but also information on the domain in which the communication terminal and the user are registered. Therefore, the SIP server 100 can determine the network position of the communication terminal in the IP network based on the SIP-URI of the communication terminal.

  The control server 120 and the control module 160 are functional modules added to realize dynamic control of a plurality of communication terminals according to the present invention.

  The control module 160 stores a user record including information on a communication terminal that can be set up by a user B installed in advance. By the processing of the control module 160, when the mobile phone 130 receives a call from the user A, the user B can select another communication terminal from the user records stored in advance and respond to the call. it can. Also, the user B can respond to the call by temporarily using the other communication terminal by inputting the information of another communication terminal that is not stored in the user record.

  The control server 120 generates an INVITE request for the user A to call the target communication terminal based on the SIP-URI of another communication terminal selected by the user B, and transmits the generated INVITE request to the SIP server 100. To do.

  After receiving the INVITE request transmitted from the control server 120, the SIP server 100 makes a call to the target communication terminal instructed by the INVITE request.

  In FIG. 1, the control module 160 is installed in the mobile phone 130. However, the present invention is not limited to this, and the control module 160 may be provided in any communication terminal such as the fixed telephone 150 and the PC telephone 140 as necessary.

  The presence server 110 stores communication terminal related information. The communication terminal related information includes, for example, status confirmation information indicating the current status of the communication terminal such as “idling”, “busy”, “online”, “offline”, the general identifier of the communication terminal, and the communication terminal The information includes the correspondence between SIP-URI and the correspondence between the location information of the communication terminal and the SIP-URI of the communication terminal. The location information of the communication terminal can be information relating to the place where the communication terminal is placed, such as “Mars company 6th conference room landline telephone”.

  Next, dynamic control of a plurality of communication terminals in the present invention will be described in detail based on FIG.

  FIG. 2 is a sequence diagram showing a control flow in the SIP / Presence system of the present invention.

  When the user A desires a call with the user B, the user A communication terminal 90 transmits an INVITE request INVITE F1 for calling the mobile phone 130 of the user B to the SIP server 110 in the IP network (Step S1). S10). In this INVITE request INVITE F1, the SIP-URI of the user A communication terminal 90 is set as the call originator address, and the SIP-URI of the user B's mobile phone 130 is set as the call destination address.

  When receiving the INVITE request INVITE F1 from the user A, the SIP server 100 recognizes that the user A is calling the mobile phone 130 of the user B based on the received INVITE request INVITE F1. Then, the user A transmits an INVITE request INVITE F2 for calling the mobile phone 130 to the mobile phone 130 (step S20). In this INVITE request INVITEF2, the SIP-URI of the user A communication terminal 90 is set as the call originator address, and the SIP-URI of the mobile phone 130 is set as the call destination address.

  When receiving the INVITE request INVITE F2 from the SIP server 100, the mobile phone 130 recognizes that it is a call from the user A based on the received INVITE request INVITE F2. Then, the user B is notified that there is a call from the user A by ringing a ring tone.

  At the same time, the control module 160 in the mobile phone 130 displays to the user B a communication terminal that can respond to a call, which is included in the user record recorded in advance. Thereafter, the user B selects a communication terminal suitable for the situation from the communication terminals indicated by the control module 160 and responds to the call.

  In the example of FIG. 2, a mobile phone 130, a PC phone 140, and an IP phone 150 are prepared as communication terminals that can be answered by the user B, and the user B uses the fixed phone 150 to accept the call. Selected. Note that the user B can also temporarily input a communication terminal that is not stored in the user record and respond to the call.

  When the user B selects a communication terminal that responds to the call, the control module 160 transmits the multi-terminal management information INVITE F3 to the control server 120 via the SIP protocol stack, so that the user B uses the fixed telephone 150. Then, the control server 120 is notified that the user A wants to respond to the call (step S30).

  The multiple terminal management information INVITE F3 includes at least the SIP-URI of the user A communication terminal 90 and the identification information of the fixed telephone 150. This identification information includes, for example, the ISDN number, location information, or SIP-URI of the fixed telephone 150.

  The control module 160 adds the extension unit to the received original INVITE request INVITE F2 to generate the multi-terminal management information INVITE F3. Identification information including a communication terminal that responds to the call selected by the user B is stored in the extension unit.

  An example of identification information stored in the extension unit will be described.

  As described above, user B selects that landline telephone 150 responds to the call. Information about the landline 150 is stored in a user record managed by the control module 160. The control module 160 adds an extension unit using the following XML format to the INVITE request as a communication terminal that can respond to a call from the fixed telephone 150 selected by the user B from the user record.

Content-Type: Multidev / XML
<username Alice
<pre-dev mobile: tel: 13912345678 / predev>
<next-dev
<recorded: office fixed phone12345678 / recorded>
/ next-dev>
In addition, when the user B temporarily selects a communication terminal that is not stored in the user record as a communication terminal that responds to an outgoing call, the following XML format is used from information input by the user B: Add the extension to the INVITE request.

Content-Type: Multidev / XML
<username Alice
<pre-dev mobile: tel: 13912345678 / predev>
<next-dev
<temporary: conference room 813 fixed phone / temporary>
/ next-dev>
/ username>
The multi-terminal management information INVITE F3 has a function of newly packaging information. Specifically, a new SIP header is added immediately before the SIP header included in the received original INVITE request INVITE F2. As the target address of the new SIP header, the address of the fixed telephone 150 according to the call made by the user B is used. A method of generating a new INVITE request while retaining the contents of the original INVITE request is called “LOOP protection”. By providing this LOOP protection, it is possible to prevent all the signal processes of the SIP / Presence system from being affected.

  When control server 120 receives multi-terminal management information INVITE F3 transmitted by mobile phone 130, control server 120 transmits subscription information SUBSCRIBE F4 to presence server 110 based on the received multi-terminal management information INVITE F3. With this subscription information SUBSCRIBE F4, the control server 120 requests the presence server 110 to search for the SIP-URI of the fixed telephone 150 and the status confirmation information indicating the current state of the fixed telephone 150 (step S40). This subscription information SUBSCRIBE F4 includes identification information of the fixed telephone 150 included in the multi-terminal management information INVITE F3.

  When the presence server 110 receives the subscription information SUBSCRIBE F4 from the control server 120, the presence server 110 searches for the presence information of the communication terminal based on the identification information of the fixed telephone 150 included in the received subscription information SUBSCRIBE F4.

  Specifically, when the identification information of the fixed telephone 150 included in the subscription information SUBSCRIBE F4 is the SIP-URI of the fixed telephone 150, the presence server 110 is stored based on the SIP-URI of the fixed telephone 150. The status confirmation information indicating the current status of the fixed telephone 150 is searched from the communication terminal related information. Then, the status confirmation information indicating the current status of the fixed telephone 150 acquired as a result of the search is included in the notification information NOTIFY F5. If the identification information of the fixed phone 150 included in the subscription information SUBSCRIBE F4 is the general identifier or location information of the fixed phone 150, the presence server 110 stores the information based on the general identifier or location information of the fixed phone 150. The status confirmation information indicating the current state of the fixed telephone 150 and the SIP-URI of the fixed telephone 150 are searched from the communication terminal related information. The notification information NOTIFY F5 includes the state confirmation information indicating the current state of the fixed telephone 150 acquired as a result of the search and the SIP-URI of the fixed telephone 150.

  Thereafter, the presence server 110 transmits notification information NOTIFY F5 to the control server 120 (step S50).

  When the control server 120 receives the notification information NOTIFY F5 from the presence server 110, the status confirmation information indicating the current state of the fixed telephone 150 included in the received notification information NOTIFY F5 is displayed. Check if it is idle. If the status confirmation information indicates that the fixed telephone 150 is currently online and idle, the control server 120 determines that the SIP of the fixed telephone 150 included in the notification information NOTIFY F5 or the multi-terminal management information. -Get the URI. In addition, the SIP-URI of the user A communication terminal 90 included in the multiple terminal management information is acquired. Then, the acquired SIP-URI of the fixed telephone 150 is set as the call destination address, and the acquired SIP-URI of the user A communication terminal 90 is set as the call origination address. An INVITE request INVITE F6 for calling is generated. Then, the control server 120 transmits the generated INVITE request INVITE F6 to the SIP server 100 (step S60).

  When the SIP server 100 receives the INVITE request INVITE F6 of the control server 120, the SIP server 100 transmits an INVITE request INVITE F7 for the user A to call the fixed phone 150 to the fixed phone 150 based on the received INVITE request INVITE F6. .

  When the fixed telephone 150 receives the INVITE request INVITE F7 from the SIP server 100, the fixed telephone 150 first rings a ring tone to notify the user B that the user A is calling. Thereafter, when the user B picks up the handset of the fixed telephone 150, the fixed telephone 150 transmits response information 200 OK F8 to the SIP server 100 to notify that the user A agrees to the call response (step S1). S80).

  When the SIP server 100 receives the response information 200 OK F8, the SIP server 100 transmits the response information 200 OK F9 to the communication terminal 90 of the user A to notify that the user B responds to the call of the user A by a fixed telephone. (Step S90).

  After receiving the response information 200 OK F9, the communication terminal 90 of the user A transmits confirmation information ACK F10 to the fixed phone 150 of the user B (Step S100). As a result, the user B can make a call with the communication terminal 90 of the user A using the fixed telephone 150.

  The above-described dynamic control method for a plurality of communication terminals according to the present invention can be realized by a software method. It can also be realized by a hardware method or a hardware / software interconnection method.

  FIG. 3 is a configuration block diagram of the presence server 110, the control server 120, and the communication terminal 200 according to the embodiment of this invention.

  FIG. 3 shows a configuration block diagram in the case where these are realized by using a hardware method. Note that the circuit components of the control server 120, the communication terminal 200, and the presence server 110 that are the same as those in the conventional configuration are not shown in the drawing. Note that the communication terminal 200 represents the user A communication terminal 90, the mobile terminal 130, the PC phone 140, and the fixed phone 150 described above, and the configuration related to these dedicated functions is omitted.

  As shown in FIG. 3, in the communication terminal 200, the receiving unit 2010 receives an INVITE request for the user A to call the communication terminal 200 from the SIP server 100. Thereafter, the received INVITE request is sent to the display unit 2012.

  The display unit 2012 refers to the received INVITE request and the user information stored in the storage unit 2014 in advance, and displays a user record including information on a communication terminal that can respond to a call.

  User B refers to the displayed user record, selects one communication terminal using input unit 2016, and responds to the call.

  Alternatively, if the communication terminal that is to respond to the call is not included in the displayed user record, the user B temporarily inputs the communication terminal using the input unit 2016 and responds to the call.

  When the user B responds to a call using another communication terminal different from the communication terminal 200, the transmission unit 2018 instructs the control server 120 that the other communication terminal input by the user B responds to the call. Multiple terminal management information is transmitted. This multi-terminal management information includes at least the SIP-URI of the user A and identification information of the other communication terminal, that is, a general-purpose identifier, location information, or SIP-URI.

  In the control server 120, the receiving unit 1210 receives the multi-terminal management information transmitted from the communication terminal 200. Then, the received multiple terminal management information is sent to the transmission unit 1211. The transmission unit 1212 transmits subscription information to the presence server 110 based on the received multiple terminal management information. This update information thereby retrieves the SIP-URI of the other communication terminal and state confirmation information indicating the current state of the other communication terminal. Among them, the subscription information includes the identification information of the other communication terminal included in the received multiple terminal management information.

  In the presence server 110, the receiving unit 1110 receives subscription information from the control server 120. The received subscription information is passed to the search unit 1112. When the SIP-URI of the other communication terminal is included in the subscription information, the search unit 1112 searches the storage unit 1114, and from the communication terminal related information stored in the storage unit 1114, Status confirmation information indicating the current status of another communication terminal is acquired. Then, the acquired state confirmation information is included in the notification information. If the received subscription information includes the general identifier or location information of the other communication terminal, the search unit 1112 selects the communication terminal related information stored in the storage unit 1114 from the other information. The status confirmation information indicating the current status of the other communication terminal and the SIP-URI of the other communication terminal are acquired. Then, the acquired status confirmation information and SIP-URI are included in the notification information.

  Finally, the transmission unit 1116 transmits the notification information to the control server 120.

  In the control server 120, the receiving unit 1210 receives notification information from the presence server 110. The received notification information is passed to the generation unit 1214. When the status confirmation information included in the received notification information indicates that the other communication terminal is currently online and idle, the generation unit 1214 is included in the received notification information or the multi-terminal management information. The user A uses the SIP-URI of the other communication terminal as the call destination address, and the SIP-URI of the user A included in the received multiple-terminal management information as the caller source address. An INVITE request for calling another communication terminal is generated. The transmission unit 1212 transmits the generated INVITE request to the SIP server 100.

  The SIP server 100 calls another communication terminal based on the received INVITE request.

  Through the processing described above, when the communication terminal 200 receives an INVITE request from the user A, the user B can select the communication terminal that is to respond to the call and can respond to the call.

  Through the above-described detailed description of the embodiment of the present invention, a method and apparatus used for dynamic control of a plurality of communication terminals presented by the present invention, and a control server and a control module are installed in the network and user communication terminals, respectively. Thus, the SIP server simply sends a call request to one communication terminal where the user's control server is installed, and dynamically uses the user control module to send another communication terminal that responds to the call as necessary. Can be selected, and then the control server generates an INVITE request for calling the other communication terminal, and finally, the SIP server calls the other communication terminal based on the generated INVITE request. It can be seen that the user can answer the call using the other communication terminal.Therefore, compared with the current technology, the method and apparatus for dynamic control of a plurality of communication terminals presented by the present invention not only realizes unlimited dynamic selection of communication terminals according to outgoing calls, but also communication resources. It has become possible to eliminate the burden of saving and installing a communication terminal for the user to answer the call in advance.

  In addition, the calling user uses the “REFER” information during the process of calling between the calling user and the called user that the IETF has proposed in RFC 3515 “The Session-Initiation Protocol”. There is known a program in which a new call with a calling user is started and the calling user and the called user must notify each other of the state of the new call. The terminal dynamic control method and apparatus do not require the user A to participate in the management process in which the called user dynamically selects another communication terminal to respond to the call, thereby affecting the calling user A. The impact can be reduced.

  Those skilled in the art should understand that the method and apparatus for dynamic control of a plurality of communication terminals disclosed by the present invention can make various improvements on the basis related to the contents of the present invention. Therefore, the protection scope of the present invention is determined by the contents of the appended claims.

1 is a configuration block diagram of a SIP / Presence system according to an embodiment of the present invention. It is a sequence diagram which shows the flow of control of the SIP / Presence system of embodiment of this invention. It is a block diagram of the configuration of the presence server 110, the control server 120, and the communication terminal 200 according to the embodiment of the present invention. It is a schematic diagram which shows the conventional multiple terminal management solution program.

Explanation of symbols

90 User A communication terminal 100 SIP server 110 Presence server 120 Control server 130 Mobile phone 140 IP phone 150 Fixed phone 160 Control module 170 IP network

Claims (22)

A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; In a network system in which a presence server that manages a state of a call side communication terminal and a control server that controls a call to any of the call side communication terminals are connected to the IP network, the control server Is a dynamic control method for multiple communication terminals executed by
(A) receiving multi-terminal management information transmitted by a called communication terminal that has received a call and instructing another called communication terminal to respond to the call;
(B) based on the received multiple-terminal management information, generating an INVITE request for calling the calling communication terminal by the calling communication terminal that originated the call;
(C) sending the generated INVITE request to the corresponding SIP server so that the SIP server calls the other called communication terminal based on the received INVITE request. A control method characterized by that. The multiple terminal management information includes at least a SIP-URI of the calling communication terminal and a general identifier or location information of the other called communication terminal,
A step of transmitting subscription information including a general identifier or location information of the other called communication terminal, which requests the presence server to search for a SIP-URI of the other called communication terminal. When,
Receiving notification information transmitted by the presence server and including a search result of SIP-URI of the other called communication terminal;
The SIP-URI of the calling communication terminal included in the received multi-terminal management information is used as the caller source address, and the SIP of the other called communication terminal included in the received notification information. The method according to claim 1, further comprising: generating the INVITE request using a URI as a destination address of a call. The notification information includes state confirmation information indicating a current state of the other called communication terminal,
3. The method of claim 2, further comprising: generating the INVITE request when the received status confirmation information indicates that the other called communication terminal is currently online and idle. Control method. The multiple terminal management information includes at least a SIP-URI of the calling communication terminal and a SIP-URI of the other called communication terminal,
In the step (b), the SIP-URI of the calling communication terminal is used as the caller source address, and the SIP-URI of the other called communication terminal is used as the call destination address. The control method according to claim 1, further comprising a step of generating an INVITE request. Subscription information including the SIP-URI of the other called communication terminal is transmitted to the presence server, requesting a search for status confirmation information indicating the current state of the other called communication terminal. Steps,
Receiving notification information transmitted by the presence server and including state confirmation information indicating a current state of the other called communication terminal;
5. The method according to claim 4, further comprising: generating the INVITE request when the received status confirmation information indicates that the other terminating communication terminal is online and idle. The control method described. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; In a network system in which a presence server that manages a state of a call side communication terminal and a control server that controls a call to any of the call side communication terminals are connected to the IP network, the call reception A dynamic control method for a plurality of communication terminals executed by a communication terminal on the side,
(D) receiving an INVITE request sent by the SIP server for the calling communication terminal to call the called communication terminal;
(E) accepting a called communication terminal that responds to a call input by a user of the called communication terminal based on the received INVITE request;
(F) When the user inputs another incoming communication terminal different from the incoming communication terminal that receives the INVITE request and responds to the outgoing call, And a step of transmitting a plurality of terminal management information for instructing another call-side communication terminal to respond to the call. The called communication terminal that receives the INVITE request stores, as a user record, the called communication terminal that can respond to the call in advance.
The step (e)
When receiving the INVITE request, displaying the pre-stored user record to the called user and selecting the communication terminal for the called user to respond to the call;
Receiving a callee communication terminal selected from the displayed user record input by the callee user as a callee communication terminal corresponding to the call. The control method according to claim 6. The called communication terminal that receives the INVITE request stores in advance as a user record the called communication terminal that can respond to the call,
The step (e)
When receiving the INVITE request, displaying a pre-stored user record to the called user and selecting the communication terminal for the called user to respond to the call;
The method further comprises the step of accepting a temporarily selected called communication terminal that is input by the user and not stored in the displayed user record as a communication terminal that responds to the call. The control method according to claim 6.   The multi-terminal management information includes a SIP-URI of the calling communication terminal and a general identifier, location information, or SIP-URI of the other called communication terminal. Item 9. A control method according to Item 6 to 8. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; In the network system in which a presence server that manages a state of a call side communication terminal and a control server that controls a call to any of the call side communication terminals are connected to the IP network, the presence server Is a dynamic control method for multiple communication terminals executed by
Storing a correspondence relationship between the universal identifier of the communication terminal and the SIP-URI of the communication terminal in advance;
Receiving subscription information sent by the control server and requesting a SIP-URI search for the communication terminal, including a universal identifier of the communication terminal;
The step of searching for the SIP-URI of the communication terminal from the correspondence relationship between the general-purpose identifier of the communication terminal stored in advance and the SIP-URI based on the general-purpose identifier of the communication terminal included in the received subscription information When,
Transmitting the notification information including the SIP-URI of the retrieved communication terminal to the control server. Searching for status confirmation information indicating the current status of the communication terminal;
The control method according to claim 10, further comprising: transmitting the notification information including the searched state confirmation information to the control server. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; A presence server that manages a state of a call side communication terminal and a control server that controls a call to any of the call side communication terminals in the network system connected to the IP network; Is a dynamic control method for multiple communication terminals executed by
Storing in advance the correspondence between the location information of the communication terminal and the SIP-URI of the communication terminal;
Receiving the subscription information including the location information of the communication terminal that requests the SIP-URI search of the communication terminal transmitted by the control server;
Searching for the SIP-URI of the communication terminal based on the correspondence between the position information of the communication terminal stored in advance and the SIP-URI based on the position information of the communication terminal included in the received subscription information; ,
Transmitting the notification information including the SIP-URI of the retrieved communication terminal to the control server. Searching for status confirmation information indicating the current status of the communication terminal;
The control method according to claim 12, further comprising: transmitting the searched state confirmation information to the control server by the notification information. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; A plurality of communication terminals in a network system in which a presence server for managing a state of a call side communication terminal and a control server for controlling a call to any of the call side communication terminals are connected to the IP network. A dynamic control method,
A step in which the SIP server sends an INVITE request that the calling communication terminal has called to the called communication terminal to the called communication terminal;
If the user of the called communication terminal selects a different called communication terminal and responds to the calling user's call, the other called communication terminal is called the calling communication terminal. A step of transmitting, to the control server, a plurality of terminal management information instructing to respond to a call ;
The control server , based on the multi-terminal management information , sending an INVITE request to the SIP server for the calling communication terminal to call the other called communication terminal;
The SIP server calls the other called communication terminal based on the INVITE request from the control server , so that a user of the called communication terminal can communicate with the other called communication. And enabling to respond to a call of the caller communication terminal using a terminal. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; A presence server that manages a state of a call side communication terminal, and is included in a network system connected to the IP network, and is connected to the IP network and makes a call to any of the call side communication terminals A control server to control,
A receiving module that receives the multi-terminal management information transmitted by the called communication terminal that has received the call and instructed by another called call communication terminal to respond to the call;
A generating module that generates an INVITE request for calling a communication terminal of another called side by a calling communication terminal that originated the call based on the plurality of terminal management information received by the receiving unit;
The INVITE request generated by the generating unit is transmitted to the corresponding SIP server, thereby making a call to the other called communication terminal based on the INVITE request received by the SIP server. And a transmission module that enables the control server. The multiple terminal management information includes at least a SIP-URI of the calling communication terminal and a general identifier or location information of the other called communication terminal,
The transmission module includes a general identifier or location information of the other called communication terminal for requesting the presence server to search the SIP-URI of the other called communication terminal. Send subscription information,
The receiving module receives notification information including a search result of SIP-URI of the other called communication terminal transmitted by the presence server;
The generation module uses a SIP-URI of the calling communication terminal included in the received multi-terminal management information as a caller source address, and sets the other called party included in the received incoming information. The control server according to claim 15, wherein the INVITE request is generated using a SIP-URI of a communication terminal as a destination address of the call. The notification information includes state confirmation information indicating a current state of the other called communication terminal,
The generation module generates the INVITE request when the received status confirmation information indicates that the other called communication terminal is currently online and idle. Control server described in. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; A communication terminal used in a network system in which a presence server that manages a state of a call side communication terminal and a control server that controls a call to any of the call side communication terminals are connected to the IP network Because
A receiving module that is transmitted by the SIP server and that receives an INVITE request for the calling communication terminal to call the called communication terminal;
An input module that accepts a communication terminal that responds to a call, which is input by a user of the called communication terminal based on the INVITE request received by the receiving unit;
When the user inputs another incoming communication terminal that is different from the incoming communication terminal that receives the INVITE request and responds to the outgoing call, the user receives another incoming call from the control server. And a transmission module for transmitting a plurality of terminal management information for instructing the call side communication terminal to respond to the outgoing call. A storage module for storing a communication terminal capable of responding to the call in advance as a user record;
A display module that displays the user record stored in advance for the user to select a communication terminal to respond to the call when receiving the INVITE request;
19. The input module receives the called communication terminal selected from the displayed user record input by the user as a communication terminal that responds to the call. The communication terminal described in 1. A storage module for storing a communication terminal capable of responding to the call in advance as a user record;
A display module that displays the pre-recorded user record for the user to select a communication terminal to respond to the call when receiving the INVITE request;
The input module receives a temporarily selected called communication terminal that is input by the user and is not stored in the displayed user record as a communication terminal that responds to the call. The communication terminal according to claim 18. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; A control server that controls outgoing calls to any of the call side communication terminals is included in a network system connected to the IP network, connected to the IP network, and manages the state of the call side communication terminal A presence server that
A storage module for storing a correspondence relationship between the universal identifier of the communication terminal and the SIP-URI of the communication terminal in advance;
A receiving module for receiving subscription information including a general identifier of the communication terminal, which is transmitted by the control server and requests a search for a SIP-URI of the communication terminal;
Based on the universal identifier of the communication terminal included in the subscription information received by the receiving unit, the communication terminal uses the correspondence between the universal identifier of the communication terminal stored in advance in the storage unit and its SIP-URI. A search module for searching the SIP-URI of the terminal;
A presence module comprising: a transmission module configured to transmit notification information including an SIP-URI of the communication terminal searched by the search module to the control server. A calling server and two or more called communication terminals are connected via an IP network, and a SIP server for transferring transmission of a call from the calling communication terminal; A control server that controls outgoing calls to any of the call side communication terminals, and is included in a network system connected to the IP network, connected to the IP network, and configured to control the state of the call side communication terminal. A presence server to manage,
A storage module for storing the correspondence between the location information of the communication terminal and the SIP-URI of the communication terminal in advance;
A receiving module for receiving subscription information including location information of the communication terminal, which is transmitted by the control server and requests a search for a SIP-URI of the communication terminal;
Based on the correspondence information between the location information of the communication terminal stored in advance and the SIP-URI based on the location information of the communication terminal included in the subscription information received by the reception module, the SIP-URI of the communication terminal A search module to search for,
A presence module comprising: a transmission module configured to transmit notification information including an SIP-URI of the communication terminal searched by the search module to the control server.

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