JP4996701B2 - SIP telephone system, line display control method, and SIP server apparatus - Google Patents

Description

  The present invention relates to a SIP telephone system having a communication function defined by SIP (Session Initiation Protocol), a line button display control method for blinking or lighting a plurality of line buttons of a terminal of the SIP telephone system, and a SIP telephone system. The present invention relates to a SIP server device to be used.

  In recent years, IP telephone systems that transmit and receive images and sounds as packet data in both directions via an IP (Internet Protocol) network have begun to spread. In this IP telephone system, it is possible not only to perform inter-line communication and external line transmission / reception for each main apparatus connected to the IP network, but also to perform internal line communication and external line transmission / reception between main apparatuses via the IP network. Can do. In this IP telephone system, SIP (Session Initiation Protocol) is widely used as the protocol.

  By the way, also in the SIP telephone system, as in the conventional button telephone system, when receiving a call, an arbitrary line button can be selected from a plurality of line buttons such as an extension button and a CO button on the terminal side. That is also strongly desired.

  As a related technique of this type, there is also proposed a method of comparing the matching of the called number included in the SIP INVITE message with the telephone number of the storage unit and displaying an incoming lamp according to the matching (for example, a patent) Reference 1).

JP 2006-333307 A

  However, in the above SIP telephone system, when an extension button and a CO button are selected on the terminal side when an incoming call is received, a message for specifying the extension button and a message for specifying the CO button must be transmitted from the SIP server device to the terminal. I must. This becomes more significant as the number of line buttons that can be selected and specified at the time of incoming calls increases.

  An object of the present invention is to provide a SIP telephone system, a line button display control method, and a SIP server device that can select an arbitrary line button to establish communication from among a plurality of line buttons without performing complicated message exchange. It is to provide.

  The SIP telephone system according to the present invention has a plurality of line buttons that blink or light, and can accommodate a plurality of terminals and a plurality of terminals that can be distinguished from each other and can be connected to a communication network. An SIP (Session Initiation Protocol) server device that establishes communication between terminals via a selected line when an arbitrary line button is selected from a plurality of line buttons at the terminal when an establishment request is generated; The SIP server device includes transmission means for adding identification information of each of a plurality of line buttons to be selection candidates in a control message and transmitting the information to the terminal when a communication establishment request regarding the terminal is generated. When identification information of each of a plurality of line buttons is added to the control message sent from the SIP server device, the identification information is used to copy the identification information. Is of the appropriate line button in line button those to a control means for flashing or lighted.

  The transmission means inserts identification information of each of the plurality of line buttons that are selection candidates in the extended information area of the control message and transmits it to the terminal.

  According to this configuration, by using the extended information area of the control message transmitted to the terminal when a communication establishment request such as an INVITE message occurs, the identification information of each of the plurality of line buttons serving as selection candidates is transmitted to the terminal. The line button to be lit or flashed.

  Therefore, an arbitrary line button can be selected from a plurality of line buttons that are flashing or lit on the terminal side only by transmitting a single control message without exchanging complicated messages between the SIP server device and the terminal. The communication can be established by selecting.

  The transmission means adds the identification information of each of the plurality of line buttons as selection candidates to the terminal in the control message together with the priority order, and transmits it to the terminal. The display control means displays the corresponding line button in the plurality of line buttons. The blinking pattern or lighting pattern is made different for each priority.

  According to this configuration, by changing the blinking pattern or lighting pattern for each priority, the user can confirm which line button should be selected with the highest priority.

  As described above, according to the present invention, a SIP telephone system, a line button display control method, and a line button display control method capable of selecting an arbitrary line button for establishing communication from among a plurality of line buttons without exchanging complicated messages. A SIP server device can be provided.

1 is a schematic configuration diagram showing an embodiment of a SIP telephone system that supports a line button display control method according to the present invention. The block diagram which shows the function structure of the SIP server and telephone terminal which were shown in the said FIG. The figure which shows an example of the trunk relevant information used with the said SIP server. The figure which shows an example of the incoming call determination table used with the said telephone terminal. The sequence diagram which shows the incoming call display method performed before. The sequence diagram which shows an example of the incoming call display method in the embodiment. The sequence diagram which shows another example of the incoming call display method in the embodiment. The sequence diagram when it becomes a problem at the time of the previous incoming call. The sequence diagram which shows the countermeasure method in the same embodiment. The sequence diagram which shows the example which arrives at a some line button in the present SIP specification. FIG. 5 is a sequence diagram showing an example of receiving a call to a plurality of line buttons in the embodiment. The flowchart which shows the control processing procedure of the SIP server in the embodiment. The figure which shows an example of an INVITE message. The flowchart which shows the control processing procedure of the telephone terminal in the embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing an embodiment of a SIP telephone system for supporting a line button display control method according to the present invention.

  This system has a SIP server 1. A plurality of telephone terminals T11 (telephone number 200) to T1n (n is a natural number) are connected to the SIP server 1. The SIP server 1 is connected to a public network NW.

  That is, the SIP server 1 has a normal exchange control function related to outgoing / incoming calls between the telephone terminals T11 to T1n and between the public network NW and the telephone terminals T11 to T1n.

  FIG. 2 is a block diagram showing a functional configuration of the SIP server 1 and the telephone terminals T11 to T1n. Here, the SIP server 1 and the telephone terminal T11 will be described as a representative.

  The SIP server 1 includes a trunk related information acquisition unit 11, a destination telephone determination unit 12, and an incoming message creation / transmission unit 13. The trunk related information acquisition unit 11 acquires the trunk related information as shown in FIG. 3 from the holding unit 14 when there is an incoming call from the trunk. This trunk-related information is a table showing the correspondence between the caller number, the number of the destination telephone, and the related CO button.

  The destination telephone determination unit 12 determines a line button to be a destination based on the trunk related information acquired by the trunk related information acquisition unit 11. Here, when the caller number “031234xxx” is included in the incoming call, the line button identification information “200” and the CO button identification information “CO1” are determined. The incoming message creation / transmission unit 13 inserts the identification information “200” of the line button and the identification information “CO1” of the CO button determined by the destination telephone determination unit 12 into the extension information area of the INVITE message to identify the destination. To the telephone terminal T11.

  On the other hand, the telephone terminal T11 includes a message receiving unit 21, a destination line button determination unit 22, an incoming pattern determination unit 23, and a line button display unit 24. The message receiving unit 21 receives the INVITE message from the SIP server 1. The destination line button determination unit 22 analyzes the contents of the INVITE message serving as the incoming message, and acquires the identification information of the line button to be received from the analysis result as shown in FIG.

  The incoming call pattern determination unit 23 determines the state to be displayed by this incoming call from the current telephone state (incoming call, call state) and the line type of the requested destination line button.

  The line button display unit 24 lights or blinks the LED of the corresponding line button. Further, the line button display unit 24, for example, when the priority “1” is assigned to the identification information “200” of the line button and the priority “2” is assigned to the identification information “CO1” of the CO button. The line button “200” is blinked at a short interval, and the CO button “CO1” is blinked at a long interval.

Next, the operation in the above configuration will be described.
FIG. 5 shows an incoming call display method performed previously.

  SIP (Session Initiation Protocol) is provided as a standard for IP telephones by many companies. SIP is a standard from a computer based on HTTP (Hyper Text Transport Protocol) that constitutes WEB, and the scope of the established standard is too narrow to provide all the functions of a conventional telephone. For example, there is no problem in providing a service equivalent to that of a general public network, but the provision of PBX-type features such as hold and transfer was originally provided by each company (after that, it was being formulated by RFC).

  On the other hand, SIP does not envisage a configuration having a large number of line buttons, which is a feature of a button telephone device that provides an in-house communication system, and each company has to implement it according to its own standard. For this reason, when an extension button and a CO line button, which are often used in a key telephone, are set as an extension as a destination of a trunk and a CO line button is set as related information of the trunk, the SIP control defined in the current RFC In the system, it is not possible to perform incoming call control with two messages on one line button. If the current method is used, one telephone set virtually defines a UA (User Agent) for each line button, and the SIP server transmits incoming messages for the necessary line buttons.

  Therefore, in the present embodiment, as shown in FIG. 6, first, a means for extending a SIP message and specifying a line targeted by the message is provided. Examples are adding headers or adding parameters to the body part.

  The identification information of the target line button is designated by this header or parameter. The identification information may be a URI, a number, or some character string, and may be determined between the SIP server 1 and the telephone terminal T11 (or end point).

  Further, in the present embodiment, as shown in FIG. 7, at the time of an incoming call, the telephone terminal T11 displays (for example, blinks) to notify the incoming call to the line button corresponding to the designated information.

For example, when 300 line buttons on the telephone terminal T11 (phone number 200) are designated,
To: 200@server.com
Line: 300@server.com
By specifying in this way, the corresponding line button is controlled (however, the notation of To and Line is only an example, and there are other expression methods).

  At the time of outgoing call, the telephone terminal T11 puts information corresponding to the line button being used and notifies the SIP server 1 of the information. At the same time, if it is desired to control a plurality of line buttons, a plurality of Line parameters are included in the message.

FIG. 8 shows a case where a problem occurs when an incoming call is received.
There is a case where an incoming call is displayed at the same time on the line button representing a trunk and the line button representing an extension when an incoming call is received.

  For example, this is a case where a terminal of DN: 200 is set as the destination of the call from the trunk, and the trunk is associated with the CO1 button. When an incoming call is received on the trunk under this premise, the button representing the line 200 of DN: 200 and the button of CO1 are flashed simultaneously in the conventional exchange and button telephone. At this time, there is a problem when there is a specification that changes the display pattern of each button depending on the types of line buttons that are simultaneously received.

  This cannot be done with standard SIP. Even if it was expanded independently, it was not usually possible to control the incoming display of multiple line buttons at the same time. For this reason, it is necessary to send incoming calls 200 and CO1 to the telephone terminal T11 independently.

At this time, if the extension button and the CO button are displayed at the same time,
(1) Both display incoming calls (2) Display incoming calls only on extension buttons (3) If there is an option to display incoming calls only on the CO button, in the conventional method, information must be given on the SIP server 1 side. In addition, since the message is sent in two steps, the display may change for a moment due to a slight time difference, which looks strange to the user.

  Furthermore, when there are other incoming calls and the incoming display of 200 and CO1 including the incoming call is decided, it is often decided by the SIP server 1.

  Therefore, in the present embodiment, as shown in FIG. 9, the state of the line button that is received at the telephone terminal T11 is grasped, and the SIP server 1 merely notifies the incoming information, and the display pattern at the telephone terminal T11. Decide. At this time, in order to eliminate the time difference between the incoming information of 200 and CO1, a plurality of incoming information, that is, information indicating incoming to 200 and CO1 is placed in one notification.

  By notifying with one message, the problem of transient display can be avoided. In the conventional method, it is necessary to transmit a plurality of SIP messages, and resources (memory, CPU power) required by software such as the SIP stack increase accordingly. In this embodiment, since it is possible with one message, an increase in these resources can be suppressed.

  FIG. 10 is a sequence showing an example of incoming calls to a plurality of line buttons in the current SIP standard.

  In the past, incoming calls are divided into two times. Therefore, if the display pattern is determined by the second incoming message, the display is different from what is originally determined according to the specification, which is troublesome for the user.

  Therefore, in the present embodiment, as shown in FIG. 11, since the final form can be determined by one message, the service can be provided to the user consistently.

FIG. 12 is a flowchart showing a control processing procedure of the SIP server 1.
When there is an incoming call from a trunk, the SIP server 1 first moves from step ST12a to step ST12b, and here, the trunk related information acquisition unit 11 acquires information associated with the incoming trunk. Subsequently, the SIP server 1 initializes the destination line button information (step ST12c), and determines whether or not the destination is DN (step ST12d).

  Here, when the caller number is “031234xxx” and the destination is designated as “200” from the trunk related information (YES), the SIP server 1 sets the destination line button to DN “200”. Then, it is determined whether or not the trunk is associated with the CO button (step ST12f).

  Here, when the caller number is “031234xxx” from the trunk related information and the trunk is associated with the CO button (YES), the SIP server 1 sets the destination line button to CO “CO1” ( In step ST12e), the telephone terminal T11 corresponding to DN “200” is determined as the destination from the destination line button (step ST12h), and for example, DN “200”, CO “in the extended information area of the INVITE message shown in FIG. "CO1" is inserted and transmitted to the telephone terminal T11 (step ST12i).

On the other hand, FIG. 14 is a flowchart showing a control processing procedure of the telephone terminal T11.
The telephone terminal T11 receives the message by the message receiving unit 21 (step ST14a), and determines whether this message is an incoming message, for example, an INVITE message (step ST14b).

  If it is determined that the message is an incoming message (YES), the telephone terminal T11 analyzes the contents of the incoming message by the incoming line button determination unit 22 and acquires the identification information of the line button to be received (step). ST14c).

  Next, the telephone terminal T11 determines the state to be displayed by the incoming call pattern determination unit 23 from the current telephone state (incoming call state, call state) and the line type of the requested destination line button (see FIG. Step ST14d). In addition to this incoming call destination line button, the status of the line button during a call or other incoming call is also subject to change if necessary.

  Then, the telephone terminal T11 actually displays an incoming call by the line button display unit 24 (step ST14e). For example, a blinking pattern of an LED, which is a ring tone.

  If it is determined in step ST14b that the message is not an incoming message (NO), the telephone terminal T11 performs other processing (step ST14f).

  As described above, in the above embodiment, the SIP server 1 inserts identification information for each of a plurality of line buttons as selection candidates in the extended information area of a control message transmitted to the telephone terminals T11 to T1n when an incoming call such as an INVITE message is received. Then, it is transmitted to the telephone terminal T11 as the destination, and the corresponding line button is lit or blinked in the telephone terminal T11.

  Accordingly, a plurality of lines blinking or lit on the telephone terminal T11 side without transmitting complicated messages between the SIP server 1 and the telephone terminal T11 that is the destination, only by sending a single control message. Communication can be established by selecting any line button from the buttons.

  In the above embodiment, an example has been described in which the identification information of a plurality of line buttons is notified to the telephone terminal T11 using the extended information area of the INVITE message. However, the information may be included in information other than the extended information area. .

  Moreover, in the said embodiment, you may make it give priority to each of several line button in the SIP server 1, and you may make it transmit to telephone terminal T11. In this way, in the telephone terminal T11, the blinking pattern or the lighting pattern can be set to be different for each priority order, whereby the user can confirm from the display which line button should be selected with the highest priority.

  In addition, the configuration of the SIP telephone system, the functional configuration of the SIP server, the type and functional configuration of the telephone terminal, the line button display control procedure, and the contents thereof can be variously modified and implemented without departing from the gist of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... SIP server, 11 ... Trunk related information acquisition part, 12 ... Destination telephone determination part, 13 ... Incoming message preparation transmission part, 21 ... Message reception part, 22 ... Destination line button determination part, 23 ... Incoming call pattern determination part , 24 ... line button display section, T11 to T1n ... telephone terminal, NW ... public network.

Claims (15)

And a plurality of terminals that can distinguish between the multiple number of lines,
And can be connected to communication network accommodates a plurality of terminals, when a communication establishment request occurs for the terminal, if any times line from among a plurality of times lines in the terminal is selected, the line that is selected SIP (Session Initiation Protocol) server device for establishing communication between terminals via
The SIP server device
When a communication establishment request occurs relating to the terminal, and adds identification information of a plurality of times Senso respectively serving as selection candidates in the control message comprises transmitting means for transmitting to said terminal,
The plurality of terminals are:
Wherein when the identification information of a plurality of times Senso respectively in transmitted control message from the SIP server apparatus is added, based on the identification information, the appropriate times line of the plurality of times lines flashing or S IP telephone system Ru comprising a control means for displaying by lighting. The transmission unit, the extended information area by inserting the identification information of a plurality of times Senso respectively as the selection candidates of 請 Motomeko 1 wherein that sends to the terminal SIP telephone system of the control message. The transmission unit, identification information of a plurality of times Senso respectively serving as selection candidates in said control message added with the priority and transmitted to the terminal,
It said control means corresponding to that rotational line Ru at different blinking patterns or the lighting pattern for each of the priority 請 Motomeko 1 SIP telephone system according to the plurality of times lines. The SIP server device further includes holding means for holding a table in which a caller number is associated with identification information of a destination line.
The transmission means, when an incoming call occurs, reads destination identification information corresponding to a caller number included in an incoming call from the table, adds the read identification information to the control message and transmits the information to the terminal. The SIP telephone system according to 1. 4. The SIP telephone system according to claim 3, wherein the priority order is determined for each terminal based on a current terminal state and a line type of a destination line. A terminal capable of distinguishing multiple lines, and can be connected to communication network accommodates a plurality of terminals, when a communication establishment request occurs for the terminal, any times line from among a plurality of times lines at the terminal There when selected, at times Senpyo示制control method used in SIP phone system that includes a SIP (Session Initiation Protocol) server device that executes a communication establishment between the terminals via the selected line,
When a communication establishment request occurs relating to the terminal, the added identification information of a plurality of times Senso respectively serving as selection candidates from the SIP server in the control message transmitted to the terminal,
In the terminal, when said identification information of a plurality of times Senso respectively it is added in the control message sent from the SIP server, based on the identification information, the corresponding of the plurality of times lines line table示制control how to display by blinking or lighting the times lines. The line display control method according to claim 6, wherein the transmitting includes inserting identification information of each of a plurality of lines as selection candidates into the extended information area of the control message and transmitting the identification information to the terminal. The transmitting includes adding identification information of each of a plurality of lines as selection candidates together with a priority in the control message to the terminal,
The line display control method according to claim 6, wherein the displaying includes changing a blinking pattern or a lighting pattern of a corresponding line among a plurality of lines for each priority. The SIP server device holds a table in which a caller number is associated with identification information of a destination line,
The transmitting includes reading destination identification information corresponding to a caller number included in an incoming call from the table when an incoming call occurs, and adding the read identification information to the control message and transmitting the information to the terminal. Item 7. The line display control method according to Item 6. 9. The line display control method according to claim 8, wherein the priority order is determined for each terminal based on a current terminal state and a line type of a destination line. And can be connected to communication network accommodates a plurality of terminals, when a communication establishment request occurs for the terminal, if any times line from among the multiple times line that the terminal Yusuke is selected, the selected In a SIP (Session Initiation Protocol) server device that establishes communication between terminals via a connected line,
When a communication establishment request occurs relating to the terminal, Ru and adding identification information of a plurality of times Senso respectively serving as selection candidates to be displayed by blinking or lighting in the control message comprises transmitting means for transmitting to the terminal S IP server device. The transmission unit, SIP server apparatus 請 Motomeko 11, wherein by inserting the identification information of a plurality of times Senso respectively as the selection candidate in the extended information area of the control message that sends to the terminal. The transmission unit, the identification information of the corresponding select times lines in said control message to cause different blinking patterns or the lighting pattern for each priority become candidates multiple times Senso respectively with priority of said terminal SIP server apparatus 請 Motomeko 11 wherein additional to that it sends to the terminal. A holding unit that holds a table that associates the caller number with the identification information of the destination line;
The transmission means, when an incoming call occurs, reads destination identification information corresponding to a caller number included in an incoming call from the table, adds the read identification information to the control message and transmits the information to the terminal. 11. The SIP server device according to 11. 14. The SIP server device according to claim 13, wherein the priority order is determined for each terminal based on a current terminal state and a line type of a destination line.

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