JP3196350B2 - Network control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network control system, and more particularly, to a call control system in a network including a plurality of node devices.

[0002]

2. Description of the Related Art Conventionally, the following systems are known as call control systems in a network.

[0003] The first method is, for example, the first method of "Easy Common Channel Signaling System" (edited by the Electronic Communication Association) issued by Ohmsha.
On page 83, as shown in FIG. 5.3, the calling side node (calling local node: LS) which has received the number information from the calling user,
This number information is translated by directory information to determine a higher-level relay node, and the higher-level relay node determines a destination node (called local node: LS) based on the number information (dial number) from the calling LS. is there. In this case, the individual setting signal including the number information from the calling user is transferred from the calling node to the called node according to the address information, and the called node determines the called user terminal corresponding to the number information by referring to the resource information. A call is set up by activating the called user terminal, returning a calling signal to the calling user, and then transmitting a response from the called user to the calling user. Note that the destination node may be determined directly by the source node.

The second system is, for example, an “ISS (Intern
aswitching Symposium) 1987 ”Proceedings, FIG. As shown in FIG. 5, this is a call control method using an SCP (Service Control Point). In this method, a calling node (calling LS) that has received number information from a calling user translates this number information with directory information, and if the dialed number is a number for a special service such as free dial or dial Q2, Activate the SCP and delegate the processing for the special dial number. The SCP converts the special dial number into a general telephone number and sends it back to the originating node. Thereafter, the call setting process is executed in the same procedure as in the first method.

In these call control systems, each node includes directory information used at the time of calling, number translation processing for determining a destination (destination node) using the directory information, and resource information used at the time of receiving. Thus, a call processing function for determining a call terminal using the resource information is required.

[0006]

With the spread of the telephone network,
Instead of (or in addition to) the conventional method of assigning telephone numbers to subscriber lines, introduction of a personal number system for assigning telephone numbers to individuals has been considered. The personal number system can be realized by, for example, (1) a method in which a telephone number is assigned to each mobile terminal (telephone) so that the same number can be communicated even when the terminal moves, and There is a method in which a terminal is fixed and connected to a subscriber line as in the past, and each user moves with an ID card, and inserts an ID card into the nearest terminal to assign a personal number to the terminal. .

[0007] In the personal number system, call control at the network level by the SCP described as the second system in the prior art is required. However, when the target number of the special number service increases, (1) the SCP access frequency at the time of call generation increases,
Requires ultra-high-speed processing capability. (2) The SCP requires a large-capacity file for accommodating directory information and resource information of a person to be serviced by the personal number system. (3) It is necessary to frequently change the directory information in the SCP as the terminal moves.

SUMMARY OF THE INVENTION An object of the present invention is to reduce the above-mentioned request for increasing the processing capacity and request for increasing the file capacity of the SCP accompanying the implementation of the personal numbering system.
It is an object of the present invention to provide a network control system which can introduce a personal number system without using a personal number system.

[0009]

In order to achieve the above object, a network control system according to the present invention is characterized in that each node device transmits number information specifying a called terminal received from a calling user (terminal) to a plurality of node devices. A function to determine whether the number information received from the calling user or another node device corresponds to a terminal accommodated in the own node, and a function to determine whether the received number information is And a function of transmitting a response signal to the calling node device or the calling user when the terminal corresponds to the terminal.

[0010]

In the present invention, if the number information received from the calling user does not correspond to the accommodation terminal of the own node, the calling node does not perform a translation process using directory information.
A control signal (message or packet) including the number information is multicast to other nodes. Each of the other nodes receiving the control signal determines whether or not the received number information corresponds to the accommodation terminal of the own node with reference to the resource information table, and determines whether the received number information corresponds to the accommodation terminal of the own node. In this case, a call is set up between the calling and receiving users by activating the called user (terminal) and returning a response signal to the calling node.

In a modification of the present invention, the local node and the relay node have a function of multicasting number information in a specific area, and the relay node connected to the originating local node is connected to another relay node or a plurality of other relay nodes. The relay node having the terminal corresponding to the number information broadcasts the number information to the local nodes, and the local node housing the terminal broadcasts the number information to the local nodes. By making a response, call setting between the calling user and the calling user is performed.

[0012]

Embodiment 1 FIG. 1 is a block diagram showing a first embodiment of a network to which the present invention is applied. In this embodiment, the network includes a plurality of user terminals T-1 to T-j (Ta-1 to Ta-j, Tb-1 to Tb).
-J, Tc-1 to Tc-j, T-d1 to Td-j) and a plurality of local nodes (LS nodes) 10 (10
A to D) and links 31 (31AB, 31AC, 31AD) connecting these LS nodes.

Each node 10 includes a switch 11, a control unit 12 and a database 13 connected to the switch via a bus 14, and line corresponding units 14 (14-1 to 14k) and 15 connected to the switch. (15-1 to
15-j). Line handling unit 15 (15-
1 to 15-j) are connected to user terminals T-1 to T-j via subscriber lines 30-1 to 30-j, respectively, and the line corresponding unit 14 (14-1 to 14k) is connected between nodes. The link 31 is accommodated. Note that each subscriber line corresponding unit 15 is the control unit 1
2, and various tables required for packet header conversion and the like are rewritten according to a command from the control unit.

FIG. 2 shows the configuration of the control unit 12. The control unit 12 has a processor 16 and a memory 17.
0, called party number analysis processing program 160, registration processing program 170, and deregistration processing program 180
And are prepared. Various tables are formed in the area 100 of the memory 17.

FIG. 3 shows the configuration of the resource information table 110 provided in the memory area 100. In the resource information table 110, an identifier indicating whether or not the user terminal device having that number is accommodated in the own node (for example, “1 if the user terminal device is accommodated in the own node”) corresponds to the number information (dial number) 111. , And “0” if not accommodated) 112 and, if accommodated, information (eg, switch output port number) 113 indicating the accommodation position of the terminal.

FIG. 4 shows a caller-side number analysis processing program 15 which is executed when the control unit 12 receives a dial number when calling from a user terminal connected to its own node.
0 shows a flowchart. The caller-side number analysis processing program 150 searches the resource information table 110 of FIG. 3 using the received number information (dial number) as a key (step 151), and the receiving terminal corresponding to the number information is accommodated in its own node. Is checked (step 152). If the receiving terminal is accommodated in the own node, the terminal accommodation position 113 is read (step 1).
53), and transmits a call setting signal to the terminating terminal via the corresponding line corresponding unit 15-i (step 154). If the receiving terminal is not accommodated in the own node, the transmission message of the address signal is edited (step 155), and the address signal is multicast to all the nodes connected to the own node via the line corresponding unit 16. (Step 156).

FIG. 5 shows a called party number analysis processing program 1 executed when an address signal is received from another node.
60 shows a flowchart for 60. The called side number analysis processing program 160 first searches the resource information table 110 of FIG. 3 using the received number information as a key, and checks whether or not the called terminal corresponding to the number information is accommodated in its own node (step 161 and 162). if,
If the receiving terminal is accommodated in the own node, the terminal accommodating position information 113 is read from the resource information table 110, and an address completion signal is returned to the transmission source node of the address signal (step 164). A call setting signal is transmitted to the terminating terminal via the line corresponding unit specified by the information (step 165). As a result of checking the resource information table 110, if it is determined that the receiving terminal is not accommodated in the own node, the routine ends without performing any special processing operation.

FIG. 6 shows a signal sequence chart of a call setting procedure in the above network configuration. An originating node, for example, a user terminal Ta-1 connected to 10A
Is the user terminal Tc-j connected to the node 10C.
Is dialed and the calling operation (200) is performed, a call setting signal 201 is transmitted from the user terminal Ta-1 to the calling node 10A. The call setting signal 201 includes the ID information of the calling terminal and the number information of the dialed-in receiving terminal.

In the originating node 10A, the originating user terminal T
a-1 of the subscriber line 35 connected to a-1 30A-1
The line corresponding unit 15-1, which stores the call setting signal 201, identifies that the call setting signal 201 is a control signal, and transfers it to the control unit 12. Upon receiving the call setting signal, the processor 06 of the control unit 12 activates the above-described calling party number analysis processing program 150 to execute the number analysis processing. In this example, since the receiving terminal corresponding to the number information is not accommodated in the own node 10A, address signals 203B, 203C, 203C, 203C, and 203D are transmitted to all the other nodes 10B, 10C, and 10D connected to the own node. 203
Multicast D.

Upon receiving these address signals 203, the nodes 10B to 10D respectively execute the above-mentioned destination number analysis program 160 (160B, 160C, 160).
Start D). In this example, nodes 10B and 10D
Does not accommodate the receiving terminal corresponding to the received number information, and consequently ends the receiving operation without doing anything. In the node 10C accommodating the receiving terminal Tc-j, after returning the address response signal 206 to the source node 10A from which the address signal is transmitted, the destination user terminal Tc
The call setting signal 207 is transmitted to −j.

When the source node 10A receives the address response signal 206 from the destination node 10C, the source nodes 10A and 10B other than the destination node 10A from which the address response signal is transmitted,
For 10D, disconnection signals 209B and 209D are respectively provided.
To disconnect them from the call. On the other hand, the receiving user terminal Tc-j that has received the call setting signal 207 enters the ringing state 208, and sends the ringing signal 210 to the receiving node 10c.
Send to C. The calling signal is transferred from the destination node 10C to the calling node 10A (211), and the calling user terminal Ta is transmitted.
-1 (212).

Next, a description will be given of a node operation and a terminal operation when the user terminal in the network configuration of FIG. 1 is replaced with a wireless terminal so that each wireless terminal can freely change the position between nodes. Here, for example, FIG.
As described above, the procedure for canceling / registering a number executed when the portable terminal Ta-1 previously accommodated in the node 10A moves to the jurisdiction of the node 10B will be described.

When leaving the node 170A, the terminal Ta-1 transmits a deregistration request 220 including the number information of the terminal to the node 10A as shown in FIG. 8A. The node 10A that has received the deregistration request,
The registration cancellation processing program 180 is started. The deregistration processing program 180 sets “0” in its own node accommodation identifier 112 corresponding to the number information designated by the deregistration request 220 in the resource information table 110 shown in FIG. Complete signal 2 for
21 to return the terminal to the node.

Terminal Ta-1 released from node 10A
Performs a registration procedure for accommodation in the node 10B at the destination. In this case, as shown in FIG.
The terminal 10A transmits a registration request 230 including the number information of the terminal to the node 10B. Upon receiving the registration request signal, the node 10B registers the registration processing program 170
Execute In the registration processing program 170, the value of the own node accommodation identifier “1” and the identifier of the wireless subscriber line of the new terminal Ta-1 are stored in the resource information table 110 shown in FIG. (Terminal accommodating position), and returns the completion signal 231 to the terminal Ta-1.

Note that the above-described terminal deregistration / registration procedure is performed by, for example, attaching / detaching an ID card storing a personal number to / from a terminal device connected to each node by wire, and setting the terminal to the personal number. It is apparent that the present invention can be similarly applied to the registration / cancellation of a number in a telephone system in which a call can be made.

<Embodiment 2> FIG. 9 is a diagram showing a TS between LS nodes 10A to 10C 'each accommodating a plurality of user terminals.
1 shows a network having a configuration interconnected via nodes 20A to 20C. In this example, the LS nodes 10A and 10A
A ′ is connected to TS node 2 via links 31A and 31A ′.
0A, the LS nodes 10B and 10B 'are connected to the TS node 20B via links 31B and 31b', and the LS nodes 10C and 10C 'are connected to the links 31C and 3C.
1C 'is connected to the TS node 20C, and these TS nodes are connected via links 32AB, 32BC, and 32CA.

FIG. 10 shows the configuration of the resource information table 120 that each TS node 10 has in the memory area in the above network configuration. Resource information table 1
Reference numeral 20 denotes a configuration in which the terminal accommodation position information 113 is omitted from the resource information table 110 of each LS node described in the first embodiment, and the terminal is controlled under its own node in correspondence with the terminal number information 121. A storage identifier 122 belonging to the own node, which indicates whether or not there is, is stored.

FIG. 11 shows a flowchart of the calling party number analysis processing program 150 'executed by each LS node 10 in the above network configuration when making a call from the accommodation terminal. In this calling party number analysis processing program, first, using the number information received from the terminal as a key, the resource information table 110 shown in FIG. 3 is searched, and the terminal (called terminal) corresponding to the number information is accommodated in its own node. It is checked whether or not it has been performed (steps 151 and 152).
If the receiving terminal is accommodated in the accommodation own node, the accommodating position information 113 of the receiving terminal is obtained from the table 110.
Is read (step 153), and a call setting signal is transmitted to the called terminal (step 154). If the receiving terminal is not accommodated in the own node, the address signal message is edited (step 155), and the address signal is transmitted to the upper node (TS node) connected to the own node (step 155). 156 '). The called party number analysis processing program 160 executed by each LS node when receiving an address signal from another node is the same as that in the first embodiment.

FIG. 12 is a signal sequence chart showing a call setting procedure in the second embodiment. Now, a call is made from the user terminal Ta-1 connected to the LS node 10A, and the user terminal Tc connected to the LS node 10C.
Assuming that the number i is dialed, the call setup procedure will be described. First, when a calling operation (200) is performed at the calling user terminal Ta-1, a call setting signal 201 including a calling terminal ID and a dialed number is sent from the self-originating user terminal Ta-1 to the calling LS node 10A. Is sent.

Upon receiving the call setting signal 201, the calling LS node 10A executes the calling party number analyzing process 15 shown in FIG.
Perform 0 '. In this case, since the receiving terminal corresponding to the number information specified by the call setting signal is not accommodated in the own node, the address signal message is edited, and the
The data is transmitted to the TS node 20A to which the node 10A is connected (203).

TS node 2 receiving the address signal
OA transmits address signals 204B and 204C to the TS nodes 20B and 20C connected to the own node.
The TS nodes 20B and 20C that have received the address signal from another TS node,
(190B, 190C).

In the TS number analysis processing program 190,
As shown in FIG. 13, the resource information table 120 of FIG. 10 is searched by using the number information designated by the received address signal as a key, and it is determined whether the receiving terminal is accommodated under the own node or not (step 191). , 192). If the receiving terminal is under the control of the own node, the address signal message is edited (step 193) and transmitted to the LS node connected to the own node (step 1).
94), if the called terminal is not under the control of its own node, this routine is terminated without doing anything.

Referring back to FIG. 12, in the TS node 20B receiving the address signal 204B, the TS number analysis processing 19
As a result of 0B, it is determined that the receiving terminal is not under the control of the own node, and no special operation is performed (NOP processing). On the other hand, T
As a result of the TS number analysis processing 190C, the S node 20C detects that the called terminal is under the control of the own node, and the LS nodes 10C, 10C connected to the TS node.
The address signal (205C, 205C) is multicast to C ′.

The LS nodes 10C and 10C 'that have received the address signals 205C and 205C respectively perform the receiving-side number analysis processing 160 (160C and 160C) described with reference to FIG.
C '). In this example, the LS node 10C ′ that has determined that it does not accommodate the terminating terminal does nothing, and the LS node 10C that accommodates the terminating terminal Tc-i sends a call to the destination TS node 20 that is the number information transmission source. And returns the address response signal 206, and transmits the call setting signal 207 to the destination user terminal Tc-i.

The destination TS receiving the address response signal 206
The node 20C transmits to the nodes other than the destination LS node 10C that is the transmission source of the address response signal 206 among the subordinate LS nodes (in this case, only the LS node 10C ').
A disconnect signal 209 is transmitted to disconnect from the call. On the other hand, the receiving user terminal Tc-i that has received the call setting signal 207 enters the calling state 208 and receives the calling signal 150.
Send to S node 10C. The calling signal is sent from the destination LS node 10C to the destination TS node 20C,
0C to the originating TS node 20A and from the originating TS node 20A to the originating LS node 10A (211 and 2).
11AC, 211A), and arrives at the calling user terminal Ta-1 from the calling LS node 10A (212).

Next, each LS node 10 in the network shown in FIG. 9 accommodates a portable terminal (wireless terminal), and for example, as shown in FIG.
The deregistration / registration operation of the number performed when moving from the node 10A to the wireless subscriber line of another LS node 10B will be described with reference to FIG.

When the terminal Ta-1 leaves the node 10A, the terminal Ta-1 transmits a deregistration request 220 including the number information of the terminal to the node 10A as shown in FIG. I do. Upon receiving the deregistration request signal, the node 10A executes the deregistration processing program 180
Execute By executing the program 180, “0” is set in the own node accommodation identifier 112 corresponding to the number information for which the registration release request has been made in the resource information table 110 shown in FIG. Is returned to the terminal Ta-1.

Upon receiving the completion signal 221, the terminal Ta-1 transmits a deregistration request 222 including the number information of the terminal to the TS node 20A. TS node 20A
Starts the deregistration processing program 180A upon receiving the deregistration request signal 222. As a result of the execution of the deregistration processing program 180A, “0” is set in the own node subordinate accommodating identifier corresponding to the number information for which the deregistration request has been made in the resource information table 120 shown in FIG. Complete signal 22 for 1
3 is returned.

The terminal Ta-1 moves, and the LS node 10B
As shown in FIG. 15B, the terminal Ta-1 transmits a registration request 230 including the number information of the terminal to the LS node 10B. The LS node 10B that has received the registration request 230 executes the registration processing program 170, and sets the own node accommodation identifier to “1” in the resource information table 110 in correspondence with the registration request number information, and Then, the completion signal 231 is returned to the terminal Ta-1.

The terminal Ta- which has received the completion signal 231
Next, 1 transmits a registration request 232 including the number information of the terminal to the TS node 20B. TS node 20B
, Upon receiving the registration request signal 232, activates the registration processing program 170B. Registration processing program 17
As a result of the execution of the 0B, the resource information table 120 stores the accommodation identifier “1” under the own node corresponding to the number information, and when this is completed, the completion signal 233 is transmitted to the terminal Ta-
Returned to 1.

The terminal deregistration / registration procedure described above is performed by connecting the terminals (Ta-1 to Tc ') to each LS node 10 by wire.
-J) is connected, and the user can register / cancel the personal number by attaching / detaching the ID card storing the personal number to / from any terminal.

<Embodiment 3> FIG. 16 shows a case where the user terminal
The nodes 10 (10A, 10A ', 10B, 10B') are accommodated, and the TS nodes 20A, 20A,
0B, and a network having a configuration in which a service control point (SCP) 21 is provided between TS nodes.

FIG. 17 shows a signal sequence chart at the time of call setting in the network configuration shown in FIG.

Now, the LS node (source LS node) 10A
It is assumed that the user terminal Ta-1 connected to the LS node 10 has made a call and the number of the user terminal Tb-j connected to the LS node 10 has been dialed (200).
1 transmits a call setting signal 201 to the calling LS node 10A. This call setting signal includes the calling terminal ID and dialed number information.

The LS node 10A that has received the call setting signal 201 executes the calling party number analysis processing program 150. In this example, since the receiving terminal having the received number information is not accommodated in the own node, the calling LS node 10
A transmits an inquiry signal 202S to the SCP 21. SC
P21 executes the SCP number analysis processing program 300 shown in FIG. 18 in response to the inquiry signal.

The SCP number analysis processing program 300 refers to a table storing the correspondence between the number information and the called area number, and finds the called area number corresponding to the inquired number information (step 301). A response signal 202A including the called area number is returned to the originating LS node 10A (step 302).

The source LS node 10A transmits an address signal 203 addressed to the TS node 20B corresponding to the destination area number notified from the SCP. The address signal is transmitted to the TS node 20A which is an upper station of the LS node 10A.
Is transferred to the destination TS node 20B via the
4). The destination TS node 20B edits the received address signal into address signals 205B and 205B ', and the LS nodes 10B and 10B' connected to the TS node 20B.
Multicast to.

The LS nodes 10B and 10B 'which have received these address signals execute the destination-side number analysis processing programs 160 (160B and 160B'), respectively, refer to the resource information table 110, and designate by the address signals. Check whether the terminal corresponding to the received number information is accommodated in the own node. In this example, the LS node 10B does not respond to the address signal because it does not have a terminal corresponding to the designated number information.
On the other hand, since the LS node 10B accommodates the terminal corresponding to the designated number information, the LS node 10B returns the address response signal 206 to the destination TS node 20B, which is the transmission source of the address signal, and at the same time, A call setting signal 207 is transmitted to the destination user terminal Tb-j at the accommodation position.

The destination TS receiving the address response signal 206
The node 20B is one of a plurality of subordinate LS nodes.
A disconnection signal 209 is transmitted to a node other than the source node 10B of the address response signal (in this case, only the node 10B ') to disconnect from the call.

Upon receiving the call setting signal 207, the called user terminal Tb-j enters the ringing state 208 and sends a calling signal 210 to the called LS node 10B. Destination LS node 10B to destination TS node 20B, destination TS node 20
The calling signal is transferred from B to the originating TS node 20A and from the originating TS node 20A to the originating LS node 10A (21).
1, 211AB, 211A), and the call setting operation is completed when the calling signal 212 arrives at the calling user terminal Ta-1.

Next, in the above-described network configuration, as shown in FIG. 19, each LS node 10 accommodates a portable terminal (wireless terminal) and one node, for example, node 1
A procedure for registering a number when the terminal Ta-1 accommodated in the wireless subscriber line 0A moves to the position of another node 10B will be described.

FIG. 20A shows a procedure when the terminal Ta-1 leaves the node 10A. The terminal Ta-1 transmits a deregistration request 220 including the number information of the terminal to the node 10A. After receiving the registration deletion request, the node 10A executes the registration cancellation processing program 180, and sets the own node accommodation identifier corresponding to the number information designated by the registration deletion request on the resource information table 110 to “0”. , A completion signal 221 to the terminal Ta-1.

The terminal Ta-1 receiving the completion signal 221
Sends a deregistration request 222 including the number information of the terminal to the SCP 21. Registration cancellation signal 2
22 reaches the SCP 21 via the LS node 10A and the TS node 20A. After clearing the destination area number corresponding to the number specified in the registration release request 222, the SCP 21 returns a completion signal 223 to the terminal Ta-1.

FIG. A procedure when the terminal Ta-1 registers a number in another node 10B will be described. Terminal Ta
-1 transmits a registration request 230 including the number information of the terminal to the destination node 10B. Registration request 2 above
Node 10B that has received the registration processing program 1
70, and stores, in the resource information table 110, the own node accommodation identifier “1” corresponding to the number information designated by the registration request and the accommodated subscriber line corresponding terminal accommodation position, A completion signal 231 is returned to the terminal Ta-1.

The terminal Ta- receiving the completion signal 231
Next, 1 transmits a registration request 232 including the number information of the terminal to the SCP 21. The registration request signal 23
2 reaches the SCP 21 via the LS node 10B and the TS node 20B. The SCP 21 that has received the registration request signal 232 returns the completion signal 233 to the terminal Ta-1, after storing the destination area number corresponding to the number information specified in the registration request.

The above procedure can be similarly applied to a system in which a telephone addressed to a personal number can be received by attaching and detaching an ID card storing a personal number to and from a wired terminal.

Although the embodiment of the present invention has been described above with respect to three types of network configurations, the present invention can be realized in a network configuration other than the above-described embodiment, for example, a network configuration in which internode links are formed by satellite lines.

[0058]

As the personal number service spreads,
The conventional system configuration requires a service control point (SCP) having a high processing capacity and a large capacity file. For example, when the number of subscribers to be provided with the personal number service is set at 80,000,000, the SC used in the entire system is used.
Assuming that the number of Ps is “10”, the processing capacity per SCP is 100 k transactions / sec, and the file capacity per SCP is 6.8 GB (directory information: 6 GB).
Bytes, resource information: 800 Mbytes). If the number information is broadcast to all the nodes according to the method of the present invention, the SCP is not required, and the processing can be distributed to each node in the whole country. In this case, each node may be provided with a file storing resource information, and it is not necessary to store directory information (conversion of accommodation node from number information). Also, resource information for the number of subscriber terminals accommodated in each node may be prepared.

In the embodiment of the present invention, the communication amount of the number information is, for example, 25 when the number of terminals is 80 million.
Mbps, which is an information amount that does not matter when compared with the total throughput of 1.5 to 150 G per BISDN node. Further, as a modification of the present invention, when a system in which the number information is multicast only to a specific area is used, the larger the range of the specific area (when the specific area becomes a nationwide area, the SCP becomes unnecessary), The processing capacity and file capacity described above can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a network configuration to which the present invention is applied.

FIG. 2 is a diagram illustrating a configuration of a control unit.

FIG. 3 is a configuration diagram of a resource information table for an LS node.

FIG. 4 is a flowchart of a calling party number processing program 150;

FIG. 5 is a flowchart of a calling party number processing program 160;

FIG. 6 is a diagram showing a procedure for setting a call in the network configuration of the first embodiment.

FIG. 7 is a diagram showing a movement mode of a terminal in the network configuration of the first embodiment.

FIG. 8 is a diagram showing a terminal deregistration processing procedure and a registration processing procedure.

FIG. 9 is a diagram showing a second embodiment of a network configuration to which the present invention is applied.

FIG. 10 is a configuration diagram of a resource information table for a TS node.

FIG. 11 is a flowchart of a calling party number processing program 150 ′ in the second embodiment.

FIG. 12 is a diagram showing a procedure for setting a call in the network configuration of the second embodiment.

FIG. 13 is a flowchart of a TS number processing program 190.

FIG. 14 is a diagram showing a movement mode of a terminal in the network configuration of the second embodiment.

FIG. 15 is a diagram showing a terminal deregistration processing procedure and a registration processing procedure in the second embodiment.

FIG. 16 is a diagram showing a third embodiment of a network configuration to which the present invention is applied.

FIG. 17 is a diagram showing a procedure for setting a call in the network configuration of the second embodiment.

FIG. 18 is a flowchart of an SCP number processing program 300;

FIG. 19 is a diagram showing a movement mode of a terminal in the network configuration of the third embodiment.

FIG. 20 is a diagram showing a terminal deregistration processing procedure and a registration processing procedure in the second embodiment.

[Explanation of symbols]

10 (10A to 10D) ... local node (LS node), 11 switch, 12 ... control unit, 13 ... file,
Ta-1 to Td-j: user terminal, 30: subscriber line, 1
4, 15 interface circuit, 16 processor, 1
7: memory, 20 (20A to 20C): relay node (T
S node), 21 ... SCP node, 31, 32 ... inter-node link, 110 ... LS node resource information table, 120 ... TS node resource information table, 20
0: calling + dialing operation, 150: calling party number analysis processing
160: called party number analysis processing, 170: registration processing, 180
... Deregistration processing, 190 ... TS number analysis processing, 300 ...
SCP number analysis processing, 208 ... ringing.

Continuation of the front page (56) References JP-A-2-142296 (JP, A) JP-A-1-273469 (JP, A) JP-A-64-39128 (JP, A) JP-A-3-85854 (JP) , A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 3/42 H04M 3/00

Claims (3)

(57) [Claims] (1) Multiple local node devices accommodating terminals
Are interconnected via a relay node device
, The number for specifying the receiving terminal from the accommodation terminal
Originating local node device receiving a call setup signal containing information
Sends the above number information to the source / relay node device connected to the own device.
Information, and the relay node device transmits the number information to another
Transfer to a plurality of relay node devices to accommodate the above called terminal
Relay node device that has a destination local node device under its control
However, the above number information received from multiple local
The destination local station that transmits to the node device and accommodates the destination terminal
Node device sends a signal for call setup to the called terminal.
A response signal to the destination relay node device
And returns the destination relay node device and the source relay node device.
Response signal to the originating local node device via
Thus, the source local node device and the destination local
That a call is set up with the
Characteristic network control method. (2) Each of the node devices is paired with terminal number information.
In response, the terminal stores identification information indicating the accommodation status of the terminal in its own device.
Resource information storage means, and one of the terminals
When moving between nodes, the source local node device and the
Source relay node device that has a local node device
Destination local node device and the local node
At the destination relay node device that has the device under its control,
Perform the above procedure for updating the resource information of the mobile terminal.
3. The network according to claim 1, wherein
Control method. (3) Each of the node devices is paired with terminal number information.
In response, the terminal stores identification information indicating the accommodation status of the terminal in its own device.
Resource information storage means, the local node
When the device inserts and removes the storage medium containing the number information,
It accommodates terminals that can change the association with
At one of these terminals, the number information pair
When a response change operation is performed, the
Local node device and the local node device
Information update in a relay node device that has Procedure
3. The network according to claim 1, wherein
Network control method.