JP4826832B2 - IP communication terminal, communication control method and program - Google Patents

Description

 The present invention relates to a communication technique related to an IP network compatible communication terminal (hereinafter referred to as an IP communication terminal) such as an IP button telephone that communicates with each other via an IP network, and more particularly to a plurality of switching main devices (also referred to as replacement servers). The present invention relates to an IP communication terminal, a communication control method, and a program that can simultaneously communicate and execute various service functions.

 Conventionally, private branch exchanges (PBX: Private Branch Exchange) or switching telephones such as key telephones and key telephones are connected using a dedicated line, etc., and a unique network is configured on the dedicated line using a unique protocol. Services were provided by communicating via the network configured as such. In addition, after the establishment of the IP (Internet Protocol) network, the switching main unit is an international standard that is provided by ITU (International Telephony Union) or IETF (Internet Engineering Task Force). 323, SIP (Session Initiation Protocol), MGCP (Media Gateway Control Protocol), and the like have come to provide network services using IP networks.

  In addition, in order to cope with redundancy of a server having a function as an exchange main apparatus, even if there is an IP communication terminal that can be registered in a plurality of servers, it is compatible with a network that can connect and communicate with a plurality of servers at the same time. There is no communication terminal. For this reason, one communication terminal cannot be used as a terminal for a plurality of servers at the same time. It was inconvenient because it had to be installed, and was complicated and required a space.

On the other hand, as a technique for registering communication terminals in a plurality of SIP servers, in Patent Document 1, when a SIP server with a high priority cannot be used when making a call, a call is made using the next SIP server with a high priority. The technology is proposed.
Patent Document 2 proposes a telephone exchange system in which an exchange server can freely use a gateway managed by another exchange server.

However, the techniques described in these patent documents do not communicate using a plurality of servers simultaneously.
JP 2006-237950 A JP 2005-333440 A

  The present invention has been made in view of the above-described circumstances, and can simultaneously register a plurality of exchange main apparatuses in one IP communication terminal to provide various services to the user. An object is to provide an IP communication terminal, a communication control method, and a program that can be improved.

  In order to achieve the above object, an IP communication terminal according to the present invention is an IP communication terminal connected to a plurality of switching main apparatuses via an IP network, and is a port used when communicating with the plurality of switching main apparatuses. Main device registration means for variable registration, and transmission control means for selecting and sending one switching main device to be used among a plurality of exchange main devices registered by the main device registration means when making a call An incoming call control means for determining an incoming call from which switching main apparatus when the incoming call is received, and a line key control means for executing lamp control of a button for a plurality of switching main apparatuses assigned to the line key; , Provided.

  According to the present invention, since the port for connecting to each switching main apparatus on the IP communication terminal side is variable, it is possible to connect to a plurality of switching main apparatuses at the same time. The switching main device side can connect to each IP communication terminal by using the same port without modifying the switching function on the switching main device side. For this reason, it becomes possible to easily provide an additional service of the IP communication terminal by a system using the existing switching main unit.

Preferably, the incoming call control means is configured to give priority to a plurality of switching main apparatuses to be connected, and to give priority to an incoming call from a switching main apparatus having a higher priority in the case of simultaneous incoming calls.
According to the present invention, when there are simultaneous incoming calls from a plurality of switching main units according to the priority order, an incoming call from a higher priority is automatically accepted, and an incoming call with a lower priority is received at the corresponding lamp. Or a service such as listening to a busy sound can be provided. Furthermore, a service such as holding the current call and responding to a new incoming call when the lamp is received can be provided.

More preferably, when there is an incoming call from another switching main unit during a call, the incoming call control means notifies the other switching main unit of the busy state and calls the line according to the status notification from the other switching main unit. Configure to display incoming calls on the key.
According to the present invention, when an incoming call is received from another exchange main unit during a call, the incoming call can be accepted by a lamp display, so that a service such as holding a call during a call and responding to a new call can be provided. it can.

  Even when a call is made, a request for communication with a destination IP communication terminal is made through a high-priority switching main unit, and if the switching main unit and the destination IP communication terminal are already connected, the next priority is given. It is preferable to make a communication request with the destination IP communication terminal via the switching main apparatus having a higher rank. As a result, the caller IP communication terminal can notify the incoming call to the callee IP call terminal, and can always acquire the call status of the callee.

  In order to achieve the above object, a communication control method according to the present invention is a communication control method between a plurality of switching main devices and IP communication terminals connected to each switching main device via an IP network, Then, the ports used when communicating with a plurality of switching main units are registered for each switching main unit, and the registered ports are used to communicate with each switching main unit and are registered when calling. Select one switching main device to be used from among a plurality of switching main devices that are used, and when receiving an incoming call, determine which switching main device is receiving from the port based on the port and perform incoming call processing. Executes button lamp control for a plurality of exchange main devices assigned to the line key, and when there is an incoming call from another exchange main device during communication, notification information designated by the user is sent to the other exchange main device And the other main switching unit, I And wherein the transfer of notification information transmitted from the communication terminal to the originating IP communication terminal.

  In the present invention, when connecting to a plurality of switching main units using different ports and receiving an incoming call from another IP communication terminal during a call, information such as the telephone number of the originating IP communication terminal is acquired. Notification information set in advance corresponding to the button is transmitted to the IP communication terminal of the transmission source by pressing the button.

  In order to achieve the above object, an IP communication program according to the present invention is a program that operates on an IP communication terminal that communicates with a plurality of switching main apparatuses via an IP network, and communicates with the plurality of switching main apparatuses. The main device registration process for registering the port to be used as a variable and the one main switching device to be used among the plurality of replacement main devices registered by the main device registration process when making a call is transmitted. Line that executes outgoing call control processing, incoming call control processing that determines which switching main unit receives an incoming call and performs incoming processing, and button lamp control for a plurality of main switching units assigned to line keys A key control process is executed by a computer.

  According to the present invention, since an incoming / outgoing call can be made via a plurality of switching main units simultaneously as an IP communication terminal corresponding to an IP-compatible switching main unit existing on the IP network, You can save where you need it. Furthermore, since it is possible to handle incoming calls from multiple switching devices at the same time and incoming calls during a call, automatic hold by pressing a line button is not possible when two communication terminals are placed This makes it possible to provide services such as changing the other party.

  Embodiments of the present invention will be described below. FIG. 1 is a schematic configuration diagram of an entire communication system including an IP communication terminal according to an embodiment of the present invention. An IP communication terminal 1 according to the present embodiment is connected to a plurality of IP-compatible switching main devices (hereinafter referred to as “switching main devices”) 2 via an IP network 3. The exchange main device 2 is, for example, a SIP server, It may be a server that supports H.323, MGCP. The exchange main unit 2 includes a transmission / reception unit 21 that performs voice communication and data communication with the IP network 3, a central processing unit 22 including a control unit 221 that performs exchange control, an HWY 23 that is a route for all voices, and one of external connection destinations. The IP trunk 24 is an interface with an IP network, and the office trunk 25 is an interface with an existing analog switching network 4.

  FIG. 2 shows a functional block diagram of the IP communication terminal 1 according to the embodiment of the present invention. In FIG. 2, the IP communication terminal 1 is configured to be able to communicate with the exchange main apparatus 2 via the IP network 3. Here, the exchange main apparatus 2 is a company that provides telephone service to SOHO, a large company with a base in Japan from a small company, etc., or a telephone service provider, etc. Managed and operated by

  The IP communication terminal 1 includes a transmission / reception unit 11 for transmitting / receiving data via the IP network 3, a central processing unit 12 for processing data received from the transmission / reception unit 11, and other various processes, and storing data. The storage unit 14 is configured to be connected to the central processing unit 12, and the operation unit 15 is operated to input / output data, and the display unit 16 is configured to display internal data. The operation unit 15 and the display unit 16 have a man-machine interface function. The transmission / reception unit 11 is a part having a communication protocol function.

  The transmission / reception unit 11 further includes a voice interface 111 which is a voice transmission / reception interface, and a call control interface 112 having a call control packet interface for controlling voice calls and the like.

  Further, the central processing unit 12 includes an input / output control unit 121 that exchanges data with the operation unit 15 or the display unit 16, a voice control unit 122 that controls transmission / reception of voice, a call control unit 123 that controls call control, and transmission / reception. Transmission / reception processing means 124 for exchanging data with the unit 11, activating means 125 for searching for an empty port for the connected switching main apparatus 2 and registering the searched port for use in communication, an IP communication terminal 1 is composed of a line key / LED registration means 126 for determining which exchange main apparatus 2 is registered in the LED of the line key of 1 and a main apparatus registration means 127 for registering the exchange main apparatus 2 to be used.

  In addition, the call control unit 123 controls the incoming call when there is an incoming call via the IP control unit 3 which is activated when the line key is pressed or when the handset is lifted. An incoming call control unit 131, a line key, and a line key / LED control unit 132 for controlling the button when various buttons are pressed are provided. Each means 121-133 of the central processing unit 12 can be realized by a program as a function of the CPU.

  FIG. 3 is a data configuration diagram of the system registration DB 141 in which priority is given to the switching main apparatus 2 to which the IP communication terminal 1 is connected. The system registration DB 141 stores the ID numbers of a plurality of registered main exchange devices 2 and the priority order expressed by the main and sub numbers in the figure. Name, domain name, IP address, etc. are registered.

  FIG. 4 is a data configuration diagram of the port registration DB 142 that stores information on ports used for the main switching apparatus 2 to be connected. The ID number of the connection-destination exchange main apparatus 2 and the port number to be used are stored on a one-to-one basis.

  FIG. 5 shows a data configuration example of the LED registration DB 143 for registering the main exchange device 2 registered for line key correspondence. The ID number of the LED and the ID number of the exchange main device 2 to be registered are associated one-to-one.

  FIG. 6 is a data configuration diagram of the line key registration DB 144 for registering the exchange main apparatus 2 registered for each line key and its line key type. Each line key has an ID number, and the ID of the exchange main apparatus 2 to be connected and the line key type are registered for each ID number.

  FIG. 7 shows a data configuration example of the message registration DB 145 for registering messages used as control signals such as call control, line control, and lamp control by the switching main apparatus 2 and the IP communication terminal 1. For each message, the message ID, message name, and message content details are registered. In this embodiment, the message details are also stored, but the message details are not particularly necessary. As a table for reference as a rule for determining what kind of event occurs when an event is generated by the message It may be used.

  Although the above has described the internal data and database stored in the storage unit, each means (function) will be described below. FIGS. 8 and 9 are a flowchart and an example of a registration screen showing the processing procedure of the “main device registration routine” performed by the main device registration means 127 for registering the replacement main device 2 to be used. The screen information is output to the display unit 16 of the IP communication terminal 1.

  When the “main device registration routine” is started, first, current data is acquired from the system registration DB 141 (S81) and output to the screen (S82). Then, branch processing is executed according to the input by the input person (S83) (S84). If the input content is “determine”, the selected content is registered in the system registration DB 141 (S85). If the input content is “cursor key”, the cursor is moved in the designated direction (S86). When the input content is “end”, the screen is returned to the original screen (S87), the end screen is displayed on the LCD, and the processing is ended (S88). The LCD screen displays the cursor key F92 and the selection content F93 of the exchange main apparatus 2 in the screen frame F91, and is registered together with the priority order by selecting the exchange main apparatus with the cursor key F92.

  10, FIG. 11 and FIG. 12 are an example of a flowchart and a registration screen showing the processing procedure of the operation of the “line key / LED registration routine” performed by the line key / LED registration means 126 for registering the replacement main apparatus 2 to be used. is there. The screen information is output to the display unit 16 of the IP communication terminal 1.

  When the “line key / LED registration routine” is started, first, current data is acquired from the LED registration DB and the line key registration DB 142 (S101) and output to the screen (S102). Branches according to the input by the input person (S103) (S104). When the input content is “determine”, the selected content is registered in the LED registration DB 143 and the line key registration DB 144 (S105). When the input content is “cursor key”, the cursor is moved in the designated direction (S106). When the input content is “end”, the screen is returned to the original screen (S107), the end screen is displayed on the LCD, and the processing is ended (S108). The LCD screen is the same as the main device registration screen example shown in FIG. 9, and the selection content F112 of the replacement main device 2 is displayed by the cursor key F111 in the screen frame F91.

  FIG. 13, FIG. 14 and FIG. 15 show the operation of the “activation routine” performed by the activation means 125 that searches for the exchange main device 2 to be used, checks the port, and registers the port for the exchange main device 2 to be connected. 5 is an example of a flowchart showing the processing procedure, a “port search routine” which is a subroutine for searching for a port, and a sequence chart at that time.

  When the “activation routine” is started when the power is turned on (S131), it is first determined by searching the system registration DB 141 whether or not the exchangeable main apparatus 2 to be connected exists (S132). If the exchange main apparatus 2 is registered, the “port search processing routine” is started to investigate the port clogging status (S133). If the port is found, it is connected to the relevant exchange main apparatus 2 using the port (S134). Steps S133 and S134 are performed for the number of exchange main apparatuses 2 registered in the system registration DB 141 (S135), and the process proceeds to step S136.

  Next, the display data of the number of connected exchange main apparatuses 2 is acquired (S136 to S138), the display of the connected exchange main apparatus 2 is performed on the LCD (S139), and the process is terminated. In FIG. 14 and FIG. 15, the “port search processing routine” searches between the port numbers 1025 to 65535 (S141a, S141b) to determine whether there is a vacant port (S142, steps S151a, S151b), and the session is established. (S152a, S152b), select and output a port number in which a vacancy is found (S143), and use the port number to make an IP registration request for the IP communication terminal 1 to the corresponding exchange main unit 2 (S153a, S153b) . Thereafter, after receiving an IP registration completion message from the corresponding exchange main apparatus 2 (S154a, S154b), the exchange main apparatus 2 is in a registration completion state (S155a, S155b). The process ends when the LCD information message is received (S156a, S156b).

  FIG. 16 is an example of a sequence chart from outgoing call to telephone call performed by the outgoing call control unit 130. When the user presses the line key or raises the handset, the IP communication terminal 1 transmits a “key information notification” message to the opposite switching main apparatus 2 (S161). The exchange main unit 2 recognizes the key press in the “notification of key press and release of terminal” from the “key information notification” message. Next, the exchange main unit 2 transmits a “ringing type display” message to send a ringer to the IP communication terminal 1 (S162).

  Next, since the call state has changed, switching main unit 2 notifies IP communication terminal 1 of a “call state notification” message (S163). The IP communication terminal 1 can perform control such as listening to a dial tone by receiving the “call state notification”. Further, when the user presses the numeric button, a “key information notification” message is transmitted to the exchange main unit 2 (S164). After receiving all the numbers, the exchange main unit 2 transmits a “ringing form display” to the IP communication terminal 1 (S165), so that the IP communication terminal 1 allows the user to listen to a ringback tone or the like.

  Next, when the communication state is changed by the communication terminal responding to the receiving side switching main unit 2, the switching main unit 2 transmits a "call state notification" message (S166) to the IP communication terminal 1. A “ringing form display” message is sent out in order to stop the transmission of the tone, etc. in response to the notification and the response from the receiving side (S167). At this time, if tone control or the like is performed on the IP communication terminal 1 side, the IP communication terminal 1 performs tone control. After that, the main switching device 2 and the IP communication terminal 1 transition to a busy state (S168).

  FIG. 17 is an example of a disconnection sequence chart from a call (S171) performed by the outgoing call control unit 130 or the incoming call control unit 131. When the user of the IP communication terminal 1 hangs up the telephone or disconnects the call by pressing a key during a call, the IP communication terminal 1 transmits a “key information notification” message to the exchange main unit 2 (step 172).

  The exchange main unit 2 that has recognized the disconnection by the “key information notification” message changes the call state to the disconnected state, and transmits a “call state notification” message to notify the IP communication terminal 1 of the state change (S173). ), A “speech path information” message is transmitted to the IP communication terminal in order to control the speech path switch inside the terminal (S174). The IP communication terminal 1 that has received the “call status notification” and “call path information” messages performs control of the call path, LCD control, and the like, and transitions to an empty state.

  FIG. 18 is an example of a sequence chart of an operation in a normal incoming call performed by the incoming call control unit 131. When another communication terminal of the exchange main device 2 makes a call to the IP communication terminal 1, the exchange main device 2 notifies the incoming call by transmitting a “ringing form display” message to the IP communication terminal 1 (S181). Further, by transmitting a “Lamp / LCD information” message, the terminal user is notified that there is an incoming call by displaying the corresponding lamp and LCD of the IP communication terminal 1 and ringing (S182).

  When the user of the IP communication terminal 1 responds by raising the handset or responding by pressing the corresponding line key, the IP communication terminal 1 responds by transmitting a “key information notification” message to the exchange main unit 2 Is notified to the switching main unit 2 (S183), and a "ringing mode display" message is transmitted (S184), information such as ringer stop is notified, and a "call status display" message is transmitted (S185). The main exchange apparatus 2 is notified that the IP communication terminal 1 has transitioned to the busy state (S186).

  FIGS. 19 and 20 are a sequence chart example and a line key display example of processing performed by the incoming call control unit 131 when there is an incoming call when the IP communication terminal 1 is in a call state. In this embodiment, in FIG. 20, the upper row (F202) of the line key frame (F201) is a line key assigned to the exchange main unit A shown in FIG. 19, and six line keys (F205) are registered. Has been. The lower row (F203) is a line key assigned to the exchange main apparatus B shown in FIG. 19, and six line keys (F206) are registered in the same manner.

  In the above configuration, when the exchange main apparatus A is in a call with the IP communication terminal 1, the corresponding line key (F205) is lit in green, for example. When the IP communication terminal 1 is in a call state (S191a), if there is an incoming call from another exchange main device B, the IP communication terminal 1 sends a “call state notification” message indicating that the call is currently in progress. Is notified to the exchange main apparatus B (S191b).

  Exchange main device B transmits a “ringing mode display” message to IP communication terminal 1 to notify that there is an incoming call (S192b). By this notification, the IP communication terminal 1 causes the corresponding line key (F206) of the exchange main apparatus B to blink in red. Further, in step S193b, exchange main unit B transmits a “lamp / LCD information” message to prompt display on the lamp or LCD of IP communication terminal 1 to be received. The user can recognize that there was an incoming call during a call based on the state of the lamp or LCD.

  21 and 22 are examples of flowcharts and sequence charts of processing performed by the incoming call control unit 131 when there is an incoming call from the switching main apparatus A and the switching main apparatus B to the IP communication terminal 1 at the same time. In the case of this embodiment, it is assumed that the exchange main apparatus A has the highest priority in the system DB 141. A case where simultaneous incoming calls occur will be described below with reference to FIGS. 21 and 22.

  When simultaneous incoming calls occur, both main exchanges A and B simultaneously transmit a “ringing form display” message informing the IP communication terminal 1 of the incoming call (S221a, S221b), and further the lamp of the incoming IP communication terminal 1 In order to perform control and LCD control, an IP “lamp / LCD information” message is transmitted simultaneously (S222a, S222b). At the same time, the IP communication terminal 1 that has received the “ringing form display” message (S211) determines whether or not the caller is the main system with the highest priority (S212), and if the caller exchange main device is not the main system (S212). , S 215), a “call state notification” message for notifying off-hook when the incoming user responds is transmitted to the switching main apparatus B (S 217, S 223 b), and the processing is terminated.

  When it is determined that the source exchange main apparatus is the main system (S212), the IP communication terminal 1 makes a ringing tone (S213), and the user presses a button (response) operation (S214) to perform “key information notification”. The message is notified to the exchange main apparatus A which is the main system (S223a). Upon receipt of the “key information notification” message, exchange main unit A transmits a “ringing form display” message to IP communication terminal 1 to specify an operation to be performed after the response (S224a). When the main apparatus is the main system (S215), upon receipt of the “ringing type display” message, the exchange main apparatus A is notified that the called-side user responds and enters the call state by a “call state notification” message (S216). , S225a), a call state is established (S226a).

  FIG. 23 shows a method of using ports used when the main switching apparatus 2 and the IP communication terminal 1 communicate with each other via the IP network 3. Communication between the system A (F231) and the system B (F232), which are switching main devices, and the IP communication terminal 1 (F233) is a port number 50,000 on the system A (F231) side and 2000 on the IP communication terminal F233 side. This indicates that communication is performed using the port 50000 on the system B (F232) side and the port 1567 on the IP communication terminal F233 side. The 2000th port and the 1567th port are obtained by a port search routine activated by the activation means 126.

FIG. 24 illustrates the lamp / LED control operation performed by the main exchange apparatus 2 and the IP communication terminal 1. For example, when the switching main apparatus F241 communicates with the IP communication terminal F242, the system registration DB 141 that is internal data indicating which switching key apparatus the line key 8 pressed by the user in the IP communication terminal F242 is. The pressed line key indicates that the key type LK2 is acquired by searching the line key registration DB 144 (F244, F246).
In addition, it can be seen that the IP communication terminal F242 that has received LK2, which is a message relating to the lamp from the exchange main unit F241, similarly turns on the line key No. 8 by searching the line key registration DB 144 (F243, F245). .

  FIG. 25 is an example of a flowchart of a “key notification routine” for notifying the key system pressed by the user in the IP communication terminal 1. After the off-hook (S251), the key pressed by the user is acquired by referring to a conversion table (not shown) (S252), and the acquired key is notified to the system (exchange main unit) (S253).

  FIG. 26 is an example of a flowchart of an operation of a “system switching routine” for switching the priority order of the plurality of switching main apparatuses 2 to which the IP communication terminal 1 is connected.

The priority is changed by the user pressing a special key of the IP communication terminal 1 or a predetermined key (S261). Next, the data in the system registration DB 141 in the IP communication terminal 1 is updated (S262). Next, the LCD data to be displayed on the screen for all the exchange main devices 2 connected to the IP communication terminal 1 is searched (S263a, S263b). At this time, LCD data is displayed only in the case of the main system (priority is first) (S264, S265), and the process is terminated.
The IP communication terminal according to the embodiment of the present invention is configured and operates as described above.

  According to the present invention, since this IP communication terminal can be operated as one terminal accommodated in a plurality of switching main units, the reserved space on the desk can be saved, and incoming calls during communication and simultaneous incoming calls are one incoming call. It is also possible to hold the call without disconnecting it, and it is possible to provide service to the held line.

  Next, an application example of the IP communication system according to the present embodiment will be described. FIG. 27 is a system configuration diagram of a multi-secretary agency system. A manager's house (secretary) F274 that performs multi-secretary agency and offices A, B, and C that perform secretary agency F271, F272, and F273 are connected to each other via the IP network 3. In each office F271 to 274, an IP communication terminal 1 is installed, and a call can be made via an exchange main apparatus 2 (not shown) connected to the IP network 3. In this multi-secretary agency system, calls to offices A, B, and C are assigned to the line key of the IP communication terminal 1 of the secretary F274.

  As a result, a single IP communication terminal 1 can perform incoming calls for a plurality of companies. Even during a call, the incoming call, that is, the terminal is connected, the call state is notified, or information previously assigned to the button by a button operation. Necessary information can be transmitted to the other party by transmitting.

  The exchange main device can be used as a terminal.

1 is a configuration diagram of an IP communication system according to an embodiment of the present invention. It is a functional block diagram of the IP communication terminal by embodiment of this invention. It is a data block diagram of system registration DB of FIG. It is a data block diagram of port registration DB of FIG. It is a data block diagram of LED registration DB of FIG. It is a data block diagram of line key registration DB of FIG. It is a data block diagram of message registration DB of FIG. It is a flowchart which shows the procedure of the selection / registration process of the main apparatus which the main apparatus registration means of FIG. 2 performs. It is explanatory drawing of the main apparatus registration screen by embodiment of this invention. It is a flowchart which shows the process sequence which the line key and LED registration means of FIG. 2 perform. It is an example (the 1) of the line key and LED registration screen by embodiment of this invention. It is an example (the 2) of the line key and LED registration screen by embodiment of this invention. It is a flowchart which shows the process sequence of the activation means of FIG. It is a flowchart which shows the process sequence of the port search process routine which the activation means of FIG. 2 starts. It is a sequence chart of the process which the activation means of FIG. 2 performs. It is a sequence chart of the process which the transmission control means of FIG. 2 performs. It is a sequence chart of the process at the time of the disconnection which the transmission control means and incoming call control means of FIG. 2 perform. It is a sequence chart at the time of the incoming call which the incoming call control means of FIG. 2 performs. It is a sequence chart at the time of the incoming call in the telephone call which the incoming call control means of FIG. 2 performs. It is explanatory drawing which shows the state of the line key at the time of the outgoing / incoming call in embodiment of this invention. It is a flowchart which shows the process sequence of the process at the time of the incoming call which the incoming call control means of FIG. 2 performs. It is a sequence chart in the case of the simultaneous incoming call which the incoming call means of FIG. 2 performs. It is explanatory drawing which shows the use condition of the port in embodiment of this invention. It is explanatory drawing of control of the line key in embodiment of this invention. It is a flowchart which shows the processing procedure of the key notification by embodiment of this invention. It is a flowchart which shows the process sequence of the switching of the system by embodiment of this invention. 1 is a configuration diagram of a multi-secretary agency system as an example of a service to which an IP communication system according to an embodiment of the present invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 IP communication terminal 2 IP-compatible switching apparatus 3 IP network 11 Transmission / reception unit 12 Central processing unit 14 Storage unit 15 Operation unit 16 Display unit 111 Voice interface 112 Call control interface 121 Input / output control unit 122 Voice control unit 123 Call control unit 124 Transmission / Reception Processing Unit 125 Activation Unit 126 Line Key / LED Registration Unit 127 Main Device Registration Unit 130 Transmission Control Unit 131 Incoming Control Unit 132 Line Key / LED Control Unit (Line Key Control Unit)
141 System registration database (DB)
142 Port Registration Database (DB)
143 LED registration database (DB)
144 Line Key Registration Database (DB)
145 Message Registration Database (DB)

Claims (5)

An IP communication terminal connected to a plurality of switching main devices via an IP network,
Main device registration means for variably registering a port to be used when communicating with the plurality of exchange main devices;
Outgoing control means for selecting and sending one exchange main device to be used among a plurality of exchange main devices registered by the main device registration means when sending,
An incoming call control means for determining an incoming call from which exchange main unit when receiving an incoming call and performing incoming call processing;
Line key control means for executing lamp control of buttons for a plurality of exchange main devices assigned to the line key;
An IP communication terminal comprising:   2. The IP communication according to claim 1, wherein the incoming call control unit assigns a priority to a plurality of switching main apparatuses to be connected, and gives priority to an incoming call from a switching main apparatus having a higher priority at the time of simultaneous incoming calls. Terminal.   The incoming call control means notifies the other switching main device of the busy state when there is an incoming call from another switching main device during a call, and the line according to the status notification from the other switching main device. 3. The IP communication terminal according to claim 1, wherein an incoming call display is performed on the key. A communication control method between a plurality of switching main devices and IP communication terminals connected to each switching main device via an IP network,
In the IP communication terminal, a port used when communicating with a plurality of switching main devices is registered for each switching main device, and when communicating with each switching main device using the registered ports, when transmitting, Selects one switching main device to be used from among the registered switching main devices, and determines the switching main device from which the incoming call is received based on the port when receiving a call. Process, execute button lamp control for a plurality of switching main devices assigned to the line key, and if there is an incoming call from another switching main device during communication, the notification information designated by the user is To the replacement main unit
The other switching main device transfers the notification information transmitted from the IP communication terminal to a source IP communication terminal. A program that operates on an IP communication terminal that communicates with a plurality of switching main units via an IP network,
A main device registration process for registering the ports to be used when communicating with the plurality of exchange main devices;
Outgoing control processing for selecting and sending one switching main device to be used among a plurality of switching main devices registered by the main device registration processing when sending,
An incoming call control process for determining which switching main unit the incoming call from when receiving an incoming call,
A line key control process for executing a lamp control of a button for a plurality of exchange main devices assigned to the line key;
An IP communication program for causing a computer to execute

Images