JP2010062730A - Camp-on system, camp-on method, camp-on program and camp-on terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extension telephone accommodated in a different exchanger, which automatically performs calling operations when the state changes from busy to available even if the exchanger dose not always acquire the extension state. <P>SOLUTION: A camp-on system has a first extension telephone, a second extension telephone connected to the first extension telephone, and a server which is connected to the first and second extension telephones, and manages presence information. If the first extension telephone calls the second telephone and the second telephone is in a calling state, the first telephone stops the first calling and becomes in a waiting state. If the first telephone is notified that the second telephone completes the calling from the server, the second call to the second telephone is performed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a camp-on system having a camp-on function, a camp-on method, a camp-on program, and a camp-on terminal.

  In a telephone or facsimile exchange, if the other party's telephone is busy when a call is placed on the telephone, a busy tone is sent to the calling telephone and the other party is busy. I let you know. It continues to send a busy tone until the caller hooks the handset on-hook.

  In other words, if a call is made while the other party's telephone is busy, the busy tone continues to be sent until the calling telephone goes on-hook, and the other party's telephone shifts to an idle state before the calling telephone goes on-hook. But it just keeps busy. For this reason, when the other party's telephone makes a call during use and the caller hears a busy sound, it has to be troublesome because the receiver must be once hooked up and then called again.

  In order to eliminate such trouble, it is common to use a camp-on function normally provided in an exchange when the telephone is busy even if it is called.

  Here, the camp-on function refers to a function that is called when the other party finishes the call even if the other party who is calling is busy.

  Patent Document 1 discloses a technique that uses such a camp-on function.

With the technique described in Patent Document 1, when dialing from a telephone, it is checked whether the called telephone is available, and when it is determined that the called telephone is not available, a busy waiting display is stored with the other party. If the called phone becomes idle while the calling phone is off-hook, it reads the busy-waiting display with the other party, emits a ringing tone to the called phone, and connects the calling phone and the called phone that are off-hook. Therefore, even if the called telephone is busy, it is possible to eliminate the troublesomeness of temporarily disconnecting and calling again.
JP 05-130230 A Yoshifumi Terashita, “Unraveling IP phone misunderstandings: The 1st presence is necessary?” [Online], updated on March 27, 2007, 08:00, Internet <URL: http: //www.itmedia. co.jp/enterprise/articles/0703/27/news004.html>

  As described above, when the camp-on function is implemented, it is possible to automatically call when the call destination telephone becomes idle.

  However, there is a problem when the camp-on function is implemented in an extension telephone network using an extension telephone.

  The camp-on function can be implemented on the condition that both the extension telephone serving as the call source and the extension telephone serving as the call destination are accommodated in the same exchange, and the exchange always keeps track of the extension status. It is a problem that was limited to the case.

  Therefore, the present invention is an extension telephone housed in a different exchange, and automatically performs a call operation when the extension is not available, even when the exchange is not always aware of the extension state. It is an object to provide a camp-on system, a camp-on method, a camp-on program, and a camp-on terminal.

  According to a first aspect of the present invention, a first extension telephone, a second extension telephone connected to the first extension telephone, the first extension telephone, and the second extension telephone; A first extension telephone in a system comprising a connected server for managing presence information, wherein the second extension telephone is in a call state when the first call is made to the second extension telephone. The first extension is canceled, the standby state is entered, and the second extension telephone is notified to the second extension telephone upon receiving notification from the server that the call of the second extension telephone has ended. A first extension telephone is provided that makes a second call.

  According to a second aspect of the present invention, in a system comprising the first extension telephone set, the second extension telephone set, and the server, the second extension telephone set includes the first call When the call is received, the call returns busy to the first extension telephone, and when the call ends, the second extension telephone notifies the server that the call has ended. When the server receives a notification that the call has ended from the second extension telephone, the server notifies the first extension telephone to that effect.

  According to a third aspect of the present invention, a first extension telephone, a second extension telephone connected to the first extension telephone, the first extension telephone, and the second extension telephone; A camp-on method in a system comprising: a connected server for managing presence information, wherein the first extension telephone calls the second extension telephone when making a first call to the second extension telephone. If the extension telephone is in a call state, the first call is stopped, the first extension telephone is in a standby state, and the first extension telephone is connected to the second extension telephone from the server. There is provided a camp-on method, characterized in that a second call is made to the second extension telephone upon receipt of a notification of completion.

  According to a fourth aspect of the present invention, a first extension telephone, a second extension telephone connected to the first extension telephone, the first extension telephone and the second extension telephone; In a first extension telephone in a system comprising a connected server for managing presence information, when the second extension telephone is in a call state when the first call is made to the second extension telephone Cancels the first call, enters a standby state, and receives a notification from the server that the call on the second extension telephone has been completed. A camp-on program is provided, which causes a computer to function as a first extension telephone that calls 2.

  According to the present invention, even if an extension telephone accommodated in a different exchange is a telephone that shares presence information, a call operation is automatically performed based on the presence information when it becomes busy from the busy state. It becomes possible.

  The camp-on system which is embodiment of this invention is demonstrated in detail with reference to drawings.

  Referring to FIG. 1, the present embodiment includes a first exchange 100, a second exchange 200, a first SIP extension telephone 500, a presence server 600, and a second SIP extension telephone 700.

  The first switch 100 and the second switch 200 are connected via a dedicated line 300. The first SIP extension telephone 500 is connected to the presence server 600 and the first exchange 100 via the HUB 401 and the HUB 402.

  Further, the second SIP extension telephone 700 is connected to the presence server 600 and the second exchange 200 via the HUB 403 and the HYB 402.

  Since the present embodiment is an extension telephone system compliant with SIP (Session Initiation Protocol) and uses SIP presence information, SIP presence information will be described first.

  Currently, SIP is generally used as a protocol for performing operations such as starting, changing, and ending a session on an IP phone. Further, when using SIP, presence can be realized by using SIMPLE (Session initiation protocol for Instant Messaging and Presence Leveraging Extensions), which is a SIP extension protocol.

  Presence is defined as RFC3856 (Standards Track) by the Internet technology standardization organization, IETF, and is realized by two methods of SUBSCRIBE / NOTIFY of RFC3265. This sequence will be described with reference to the sequence diagram of FIG.

  First, the first terminal 2001 (hereinafter referred to as “watcher”) who wants to know the state of the second terminal 2002 (hereinafter referred to as “presentity”) has a change in the state of the presentity. A SUBSCRIBE is issued to the presence server for notification each time (step S101). At this time, an address representing the presentity is designated in the TO header, and a notification expiration date (Expire) is designated.

  When the presence server 1000 that manages the presence accepts SUBSCRIBE, the presentity state (offline) at that time is returned on NOTIFY at the same time as the 200 (ok) response (step S102) (step S103). Upon receiving this, the watcher returns a 200 (ok) response (step S104).

  On the other hand, in order for the presence server 1000 to manage the status of each terminal, the watcher went to the presence server 1000 when the terminal received power ON (that is, REGISTER request) (step S105). In the same manner as described above, the presentity is requested to continue to notify the state change (steps S106 to S108).

  By receiving NOTIFY (online) in step S108, the presence server knows that the presentity 2002 has changed from “offline” to “online”, while accepting the change notification request from the watcher 2001. Since it is within the expiration date, NOTIFY is transmitted to the watcher (step S109). Upon receiving this, the watcher returns a 200 (ok) response (step S110).

  The first exchange 100 and the second exchange 200 are exchanges for performing an extension call, and perform communication using a dedicated line 300. Note that the present embodiment is applicable even when the first switch 100 and the second switch 200 do not always know the state of the extension network.

  The first SIP extension telephone 500 and the second SIP extension telephone 700 are extension telephones conforming to SIP, and activation of the camp-on function is assigned to a button or the like. The first SIP extension telephone 500 and the second SIP extension telephone 700 correspond to the terminal No. 2001 and the terminal No. 2002 in FIG.

  The presence server 600 is a server that manages the presence information of the first SIP extension telephone 500 and the second SIP extension telephone 700.

  Next, the operation of this embodiment will be described with reference to the sequence diagram of FIG.

  This time, a case will be described in which the first SIP extension telephone 500 serves as a watcher as shown in FIG. 2, and the second SIP extension telephone 700 serves as a presentity as shown in FIG.

  In this case, it is assumed that the presence information of each SIP extension telephone is shared, and the state of the telephone accommodated in the other exchange can be known from the calling telephone. Further, it is assumed that the first SIP extension telephone 500 has already set the information of the second SIP extension telephone 700 as a watcher.

  First, the second SIP extension telephone 700 starts a call with a telephone other than the first SIP extension telephone 500 (step S201).

  The first SIP extension telephone 500 makes a call to the second SIP extension telephone 700 through the first exchange 100, the private line 200, and the second exchange 300 in order to make a call (step S201). However, the second SIP extension telephone 700 that has received the call returns busy because it is currently talking (step S203). Further, the busy state of the second SIP extension telephone 700 may be confirmed based on the presence information managed by the presence server 600, instead of the second SIP extension telephone 700 returning busy.

  Next, the first SIP extension telephone 500 that has confirmed that the second SIP extension telephone 700 is busy activates the camp-on function assigned to the button or the like. Thereby, the first SIP extension telephone 500 waits for the status notification of the second SIP extension telephone 700 sent from the presence server 600 (step S204).

  Thereafter, the second SIP extension telephone 700 is finished talking and becomes free (on_phone) (step S205), and the presence server 600 is notified of this. The presence server 600 notifies the presence server 600 that the second SIP extension telephone 700 has become available to the first SIP extension telephone 500 (step S206). Note that this notification is performed in the same sequence as the sequence described as step S101 to step S110, and therefore the description and illustration are omitted.

  The first SIP extension telephone 500 that receives the notification from the presence server 600 automatically makes a call to the second SIP extension telephone 700 by the camp-on function (step S207).

  Even if an extension telephone accommodated in a different exchange by the above operation is a telephone that shares presence information, automatic recall processing is performed by using the presence information as a trigger, and automatically when busy becomes idle. You can make outgoing calls.

  As a result, it is possible to obtain the effect of realizing the function equivalent to the camp-on by the exchange based on the presence information received when the called telephone becomes busy from the busy state.

  Further, since presence information is received and automatically transmitted, there is an effect that it is not necessary to always care about the other party's state.

  In addition, the camp-on system which is embodiment of this invention is realizable by hardware, software, or these combination.

  The present invention is suitable for an application in which an extension telephone accommodated in a different exchange and a telephone sharing the presence information realizes a function equivalent to camp-on.

It is a figure showing the basic composition of the embodiment of the present invention. It is a figure which shows the exchange with the presence server in embodiment of this invention. It is a figure showing the basic operation | movement of embodiment of this invention.

Explanation of symbols

100 First switch 200 Second switch 300 Dedicated lines 401, 402, 403 HUB
500 First SIP extension telephone 600, 1000 Presence server 700 Second SIP extension telephone 2001 First terminal 2002 Second terminal

Claims (13)

A first extension telephone; a second extension telephone connected to the first extension telephone; a server connected to the first extension telephone and the second extension telephone to manage presence information; A first extension telephone in a system comprising:
If the second extension telephone is in a call state when the first call is made to the second extension telephone, the first call is stopped, the standby state is entered, and the second extension is sent from the server. A first extension telephone, wherein a second call is made to the second extension telephone in response to a notification that the telephone call has been completed.   The first extension telephone according to claim 1, wherein the first extension telephone is connected to the second extension telephone via a plurality of exchanges.   3. The communication system according to claim 1 or 2, wherein the second extension telephone and the server communicate with each other by a communication method compliant with SIP (Session Initiation Protocol) and SIMPLE (Session initiation protocol for Instant Messaging and Presence Leveraging Extensions). The first extension telephone described. In the system provided with the 1st extension telephone according to any one of claims 1 to 3, the 2nd extension telephone, and the server,
If the second extension telephone is busy when receiving the first call, the second extension telephone returns busy to the first extension telephone, and the second extension telephone ends the call. If the call has been made, the server is notified that the call has ended, and the server notifies the first extension telephone when the call is received from the second extension telephone. A system characterized by that. In the system provided with the 1st extension telephone according to any one of claims 1 to 3, the 2nd extension telephone, and the server,
When the second extension telephone starts a call, the second extension telephone notifies the server that it will start a call, and the server receives a notification from the second extension telephone that the call starts. To the first extension telephone, and when the server receives a notification from the second extension telephone that the call has ended, the server notifies the first extension telephone to that effect. A system characterized by A first extension telephone; a second extension telephone connected to the first extension telephone; a server connected to the first extension telephone and the second extension telephone and managing presence information; A camp-on method in a system comprising:
If the second extension telephone is in a call state when the first extension telephone makes a first call to the second extension telephone, the first extension telephone is stopped and the first extension telephone is stopped. When the extension telephone is in a standby state and the first extension telephone is notified by the server that the call of the second extension telephone has been completed, the second extension telephone is in a second state. A camp-on method characterized by making a call.   If the second extension telephone is busy when receiving the first call, the second extension telephone returns busy to the first extension telephone, and the second extension telephone ends the call. If the call has been made, the server is notified that the call has ended, and the server notifies the first extension telephone when the call is received from the second extension telephone. The camp-on method according to claim 6.   When the second extension telephone starts a call, the second extension telephone notifies the server that it will start a call, and the server receives a notification from the second extension telephone that the call starts. To the first extension telephone, and when the server receives a notification from the second extension telephone that the call has ended, the server notifies the first extension telephone to that effect. The camp-on method according to claim 6 or 7, wherein   The camp-on method according to any one of claims 6 to 8, wherein the first extension telephone and the second extension telephone are connected via a plurality of exchanges.   10. The system according to claim 6, wherein the first extension telephone, the second extension telephone, and the server communicate with each other using a communication method compliant with SIP and SIMPLE. How to camp on. A first extension telephone; a second extension telephone connected to the first extension telephone; a server connected to the first extension telephone and the second extension telephone and managing presence information; In a program for causing a computer to function as a first extension telephone in a system comprising:
If the second extension telephone is in a call state when the first call is made to the second extension telephone, the first call is stopped, the standby state is entered, and the second extension is sent from the server. A camp-on program for causing a computer to function as a first extension telephone that makes a second call to the second extension telephone upon receiving notification that the telephone call has ended . The first extension telephone;
12. The camp-on program according to claim 11, wherein the camp-on program functions as a first extension telephone connected to the second extension telephone via a plurality of exchanges. The first extension telephone;
13. The camp-on program according to claim 11, wherein the camp-on program is made to function as the second extension telephone and the first extension telephone that communicates with the server by a communication method compliant with SIP and SIMPLE.

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