JP3444407B2 - VoIP address setting system and 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 voice packet communication system for performing voice communication via the Internet such as an Internet telephone. In particular, the present invention relates to a VoIP (Voice over Internet) of a terminal or a gateway constituting a voice packet communication system.
Protocol) Address setting system and method.

[0002]

2. Description of the Related Art FIG. 4 is a diagram showing a conventional voice packet communication system. As shown in the figure, the voice packet communication system is provided with a plurality of exchanges 1 and 6, and each exchange 1 and 6 is a node in an existing telephone network. A plurality of telephones 20, 30 and gateways 2, 5 are connected to each of the exchanges 1, 6.

Each of the gateways 2 and 5 is a VoIP gateway having the same system configuration and connecting the telephone network composed of the Internet 4 and the exchanges 1 and 6. For each of the gateways 2 and 5, the voice is digitized and packetized on the transmission side to the Internet 4
Sent to. On the receiving side, the order of the packets is rearranged, the missing packets are complemented, and the like, and then the voice is returned to the connected telephone.

The IP address of the packet transmitted from each of the gateways 2 and 5 to the Internet 4 is the telephone 2
It is also possible to prepare as many as 0 and 30 and connect to the Internet 4 for a plurality of simultaneous voice communications. However, since the IP addresses are exhausted, normally, the IP addresses of the packets sent from each of the gateways 2 and 5 to the Internet 4 are the same IP address when a plurality of simultaneous voice communications are carried out, and the IP address of the upper layer. Differentiated using port numbers.

A gatekeeper 3 is provided on the Internet 4, and the gatekeeper 3 is a control server for providing an Internet telephone service.
It manages and operates P address correspondence. In the gatekeeper 3, each of the gateways 2 and 5 inquires via the Internet 4 about the IP address of the gateway of the connection destination based on the telephone number information of the connection destination.

In response to the above inquiry, the gatekeeper 3 notifies the IP address of the corresponding gateway. FIG. 5 is a diagram showing a sequence for explaining the operation of the conventional voice packet communication system in FIG. As shown in this figure, for example, when the telephone 20 calls the telephone 30 via the exchange 1, the gateway 2 indicates the telephone number information of the telephone 30 to the gatekeeper 3 and the IP address of the gateway 5 of the connection destination. To inquire. (Sequence 101)

The gateway 3 notifies the IP address of the gateway 5, for example, which is inquired from the gateway 2. (Sequence 102) The gateway 2 receives the I notified from the gatekeeper 3.
The gateway 5 of the connection destination is called based on the P address. (Sequence 103) In response to the call from the gateway 2, the gateway 5 confirms with the gatekeeper 3 the telephone number used by the gateway 2 for inquiry. (Sequence 104)

The gatekeeper 3 responds to the confirmation of the gateway 5 by notifying the gateway 5 of the telephone number. The gateway 5 calls the telephone 30 via the exchange 6. (Sequence 105) The gateway 5 sends a call response to the gateway 2. (Sequence 106)

Telephones 20, 3 via gateways 2, 5
0 calls are made. (Sequence 107) As described above, in each of the gateways 2 and 5 that connect the telephone network including the telephones 20 and 30 and the exchanges 1 and 6 and the Internet 4, for a plurality of simultaneous calls to the connection destination, The same IP address is used as the source IP address, and the port number of the source of the upper layer identifies the simultaneous call.

[0010]

However, the above-mentioned conventional voice packet communication system has a problem that the number of voice communications that can be simultaneously handled by one terminal or one gateway is limited. That is, the number of voice communications that can be performed simultaneously by one IP address is limited by the number of upper layer port numbers, that is, the size of the address space.

For this reason, when the number of voice communications simultaneously increases significantly, as described above, the number of voice communications that can be handled at the same time by the gateway is limited, so that the connection destination cannot be connected. In such a case, if the IP addresses are increased, the connection destination is reached, but if the IP addresses are unnecessarily increased, the IP addresses are exhausted as described above. In the above simultaneous handling on the gateway, I of the transmission source used for voice communication is used.
The P address is the same as the source IP address used for connection control until the other party is called and voice communication is started, and both IP addresses are identified by the port number of the upper layer.

Therefore, in a plurality of simultaneous voice calls, when the number of simultaneous calls greatly increases, the number of upper layer port numbers used for connection control also increases, and the number of upper layer port numbers becomes tight. If the port number of the transmission source of the call packet and the port number of the transmission source of the connection control packet can be separated, the tightness of the upper layer port number for the communication IP address of the communication packet is mitigated even if the number of simultaneous voice communications increases. it can.

However, as shown in FIG. 5, during connection control, the packet is sent not only to the gatekeeper 3 but also to the gateway 5 of the connection destination, and also during communication of the call, the packet is sent to the gateway 5 of the connection destination. For this reason, it is not possible to easily determine whether the packet for connection control and the packet for communication are sorted based on the IP address of the connection destination.

Therefore, in view of the above problems, the present invention separates the port number of the transmission source of the call packet and the connection control packet and makes it possible to alleviate the tightness of the number of upper layer port numbers of the call packet. It is an object to provide a setting system and method.

[0015]

SUMMARY OF THE INVENTION The present invention is to solve the above problems, in the VoIP address setting system gateway that connects the telephone network and the Internet, gate
Connection control packet for connection control with the gateway, call
The connection control IP address
Address of the upper layer of each
Port number management circuit that separates and manages port numbers
Destination telephone number and gateway's connection control IP address
Manage the relationship between the network and contact the inquiry showing the telephone number.
Notify the connection control IP address of the destination gateway,
Or, notify the confirmation request with the telephone number shown in the inquiry.
Gatekeeper on the Internet and the port number
The connection control IP address and port number are sent from the number management circuit.
Shows the telephone number set as the sender and requesting multiple simultaneous connections.
The connection control packet sent to the gatekeeper
Query the connection control IP address of the gateway;
Connection control IP notified from the gatekeeper to
Connect from the port number management circuit with the address as the destination
Call IP with control IP address and port number as source
Address and port number of the call IP address
Make a call with a control packet; another gateway?
When receiving a call from the port number management circuit
Connection control IP address and port number as the source
Query the gatekeeper with the specified connection control packet
Confirm the phone number shown in the following; After confirming the phone number before
The connection control IP address and port from the port number management circuit
Call from the port number management circuit using the telephone number as the transmission source.
Attached the P address and port number of the call IP address
Another gateway that called with a connection control packet
Connection control circuit that makes a call to the other side, and the call IP address and the call IP address attached from the gateway of the connection destination between the gateways that have called the connection control circuit.
Port number as the destination, and the port number management circuit
Call IP address, call IP address port number
With the call circuit unit that sends and receives call packets with the
VoIP address setting system characterized by including
To provide

[0016] By this means, separating the source port number of the connection control packets to a separate source of the connection control packet and call packet by setting the IP address to the start of the call and the call packets making a call And the same
Even if the number of calls per hour increases significantly, it is possible to relax the tightness in the number of upper layer port numbers of the call packet.

Further, the connection control circuit is a gateway.
When making an inquiry from i to the gatekeeper, the gateway
From the gateway when confirming from the above to the gatekeeper
Use the port number management circuit when calling the gateway.
Search and connect using the found free port number as the sender
Set in control packet.

By this means, it becomes possible to shorten the waiting time for waiting when a plurality of calls are made simultaneously. Further, the communication circuit
When making a call between the calling gateways
The port number management circuit is searched
Set the port number in the call packet as the source.

By this means, it becomes possible to reduce the waiting time when there are a plurality of simultaneous calls. In addition, the port number
The management circuit has a connection control IP address and a call IP address.
Manage the usage status of each port number and use each port number
Depending on the situation, add the connection control IP address and call IP address.
Make additional decisions. By this means, the IP address can be effectively used.

Further, according to the present invention, in a VoIP address setting method of a gateway for connecting a telephone network and the Internet , a connection control package for performing connection control with the gateway.
Connection control of IP address of call packet
Higher IP address and call IP address
Separate the layer port number and manage it in the port number management circuit.
Connection process with a gatekeeper on the Internet
Destination telephone number and gateway's connection control IP address
Manage the relationship between the network and contact the inquiry showing the telephone number.
Notify the connection control IP address of the destination gateway,
Or, notify the confirmation request with the telephone number shown in the inquiry.
Steps to perform and connection control IP from the port number management circuit
Address and port number are set as the source and multiple simultaneous
In the connection control packet indicating the telephone number to request connection,
Connection control IP address of the gateway to connect to the gatekeeper
The process of inquiring about the dress and the gate for the inquiry
The connection control IP address notified by the keeper is set as the destination.
The connection control IP address from the port number management circuit,
Source is port number, call IP address, call IP
Call with a connection control packet with the port number of the address attached.
Calling out from other gateways
When received, the connection control I from the port number management circuit
Connection control with P address and port number set as the sender
Indicated in an inquiry to the gatekeeper in your packet
Check the phone number, and check the phone number after checking the phone number.
From the port number management circuit to the connection control IP address and port number
From the port number management circuit as the sender.
Connection with a dress and a port number of the calling IP address
Call another gateway that made a call with a control packet
And the call IP address attached from the gateway of the connection destination between the gateways calling in the connection control circuit, and the port number of the call IP address
No. as the destination and the call IP from the port number management circuit
Address, port number of call IP address as source
And a step of transmitting and receiving a call packet
A VoIP address setting method is provided.

By this means, a call can be made in the same manner as in the above invention.
Can be separated source port number of the connection control packet and call packet connection control packet is to go into a separate source IP address to the start of the call and the call packet to perform, the number of simultaneous calls is very Even if the number increases , the tightness can be mitigated for the number of upper layer port numbers of call packets.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a VoI according to the present invention.
It is a block diagram showing a schematic structure of a P address setting system. As shown in this figure, the configurations different from those in FIG. 4 are gateways 12 and 15 and a gatekeeper 13.

A communication circuit 7 is provided in each of the gateways 12 and 15, and in the communication circuit 7, the voice of the telephone 20 is digitized and packetized on the transmission side, for example, through the exchange 1. On the receiving side, for example,
The order of the packets is rearranged, the missing packets are complemented, and the voice is returned to the voice, and the voice is sent to the telephone 30 of the other party via the exchange 6, for example.

The above packet is divided into a call packet and a connection control packet. The call packet is a voice packet during a call, and the connection control packet is a packet used for connection control until the other party is called to connect and the call is started. “A” is set to the call IP address of the transmission source of the call packet, and “An” is set to the transmission source port number.
(N: integer) is set. When a plurality of call packets occur simultaneously, the call packets are identified by the source port number.

Further, "B" is set in the connection control IP address of the transmission source of the connection control packet, and "Bn" (n: integer) is set in the transmission source port number. When the connection control packet is generated more at the same time multiple concurrent calls, the connection control packets are identified at the source port number.

In this way, by setting the IP address of the packet transmission source to the two call IP addresses A and the connection control IP address B, the packets transmitted from the gateways 12 and 15 are converted into voice packets and connection control packets. It became possible to separate easily. Therefore, the upper layer port number A for the call IP address A
n, the upper layer port number Bn for the connection control IP address B is set, so that the number of upper layer port numbers increases as a whole, and the number of upper layer port numbers becomes tight for a plurality of simultaneous calls. Will be alleviated.

A connection control circuit 9 is connected to the call circuit 7 and the port number management circuit 8 via a bus.
When a call request is issued from the call circuit 7, the connection control packet is generated, and the connection control is performed until the other party is called to connect and the call is started. The network communication circuit 10 connected to the bus connects to the Internet 4, transmits packets to the Internet 4, and receives packets from the Internet 4.

The Internet 4 has a gatekeeper 13
The gatekeeper 13 is a control server for providing the Internet telephone service, and manages and manages the correspondence between the telephone number of the connection destination and the connection control IP address B. FIG. 2 is a diagram for explaining the management of the usage status of the port numbers in the port number management circuit 8.

As shown in FIG. 1A, the gateway 1
In the port number management circuit 8 of No. 2, the port number A121 for the call IP address 12 of the transmission source of the call packet,
The use / non-use of A122, ..., A12n1 is managed,
Further, port numbers B121, B122, ... For the connection control IP address 12 of the transmission source of the connection control packet.
Use / non-use of B12n2 is managed.

As shown in FIG. 2B, the gateway 1
In the port number management circuit 8 of 5, the port number A 151 for the call IP address 15 of the transmission source of the call packet,
The use / non-use of A152, ..., A15n3 is managed,
Furthermore, the port numbers B151, B152, ... For the connection control IP address 15 of the transmission source of the connection control packet
Use / non-use of B15n4 is managed.

In the case of a plurality of simultaneous calls, the port number management circuit 8 searches for a port number of a vacant IP address and gives the searched port number as the source port number of the packet. You may This is to reduce the idle waiting time. FIG. 3 is a diagram showing a sequence for explaining the operation of the VoIP address setting system in FIG.

As shown in the figure, for example, call control from the telephone 20 to the telephone 30 is performed via the exchange 1. At the time of call control, the connection control circuit 9 of the gateway 12 adds "B" to the source IP address of the connection control packet.
12 "is set, and the connection control IP of the port number management circuit 8 is set.
A free port number for the address B12 is searched for, and the port number "B12n" found for the source port number is searched.
To set.

Next, via the network communication circuit 10 of the gateway 12, the telephone number information of the other party's telephone 30 is shown to the gatekeeper 13 on the Internet 4 to inquire about the IP address B of the destination gateway 15. Is done. (Sequence 111) The gatekeeper 13 notifies the connection control circuit 9 of the gateway 12 of the IP address of the gateway 15 inquired from the gateway 12. (Sequence 11
2)

The connection control circuit 9 of the gateway 12 sets the source IP address A12 and the source port number A 12n set in the sequence 111 in the connection control packet, and sets the source IP address A12n of the source to the notified IP address of the gateway 15. Make a call. At the time of this call, the gateway 12
The connection control circuit 9 of FIG.
A free port number for address A12 is searched.

The IP address A12 of the transmission source and the searched port number A12n of the transmission source are attached to the above connection control packet at the time of calling, and the gateway 15 is notified. (Sequence 113) The connection control circuit 9 of the gateway 15 uses the gateway 1
The source I of the connection control packet in response to the call from
"B15" is set to the P address, a free port number for the connection control IP address B12 of the port number management circuit 8 is searched, and the searched port number "B15n" is set to the source port number.

Next, via the network communication circuit 10 of the gateway 15, the telephone number used by the gateway 12 for inquiry is confirmed with respect to the gatekeeper 13 on the Internet 4. (Sequence 114) The gatekeeper 13 makes a confirmation response notifying the telephone number for which confirmation has been requested by the gateway 15. The gateway 15 calls the telephone 30 via the exchange 6. (Sequence 115)

The connection control circuit 9 of the gateway 15 sets the source IP address A15 and the source port number B15n set in the sequence 114 in the connection control packet, and the notified IP address A1 of the gateway 12 is set.
2. Call the port number A12n. At the time of this call, the connection control circuit 9 of the gateway 15 searches for an empty port number for the call IP address A15 of the port number management circuit 8.

The IP address A15 of the transmission source and the searched port number A15n of the transmission source are attached to the above-mentioned connection control packet at the time of calling, and the gateway 12 is notified. (Sequence 116) Telephone calls of the telephones 20 and 30 are performed via the gateways 12 and 15. During this call, the voice packet from the call circuit 7 of the gateway 12 includes the source IP address A
12, upper layer port number A12n for this,
The connection destination IP address A15 and the upper layer port number A15n for this are used.

The voice packet from the communication circuit 7 of the gateway 15 includes a source IP address A15, an upper layer port number A15n corresponding thereto, a connection destination IP address A12, and an upper layer port number A12 corresponding thereto.
n is used. (Sequence 117) As described above, the vacant port numbers are found from the port number management circuits 8 of the gateways 12 and 15 and notified to the other party, so the gatekeeper 13 knows the vacant port numbers of the gateways 12 and 15. Even if the gateways 12 and 15 are not provided, voice communication can be performed with the vacant port number.

It should be noted that, depending on the usage status of the port number management circuit 8, each of the gateways 12 and 15 may determine whether to add a call IP address or a connection control IP address. This is because the IP address can be effectively used.

[0041]

As described above, according to the present invention,
Connection control IP as the source IP address of the packet
By separating the address and the call IP address, it becomes possible to separate the connection control packet and the call packet, which enables many voice packet communications at the same time. As a result, the restriction on the port IP address of the upper layer is relaxed, and when a plurality of simultaneous calls are made, it becomes possible to reduce the number of calls that can be handled simultaneously by the gateway.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a VoIP address setting system according to the present invention.

FIG. 2 is a diagram for explaining management of the usage status of port numbers in a port number management circuit 8.

3 is a diagram showing a sequence for explaining the operation of the VoIP address setting system in FIG.

FIG. 4 is a diagram showing a conventional voice packet communication system.

5 is a diagram showing a sequence for explaining the operation of the conventional voice packet communication system in FIG.

[Explanation of symbols]

1,6 ... exchange 4 ... Internet 7 ... speech circuit 8 ... address management controller 9 ... connection control circuit 10 ... network speaking circuits 12, 15 ... gateway 13 ... gatekeeper 20, 30 ... Phone

Claims (6)

(57) [Claims] 1. A game for connecting a telephone network and the Internet.
In Toei's VoIP address setting system,Connection control packet to control connection with gateway, call
Connection control IP address
Address, call IP address, and port of each upper layer.
Port number management circuit that separates and manages the port number, Telephone number of the connection destination, the connection control IP address of the gateway
Manage dress relationships and respond to inquiries with phone numbers
Notifies the connection control IP address of the destination gateway
Or the telephone number given in the inquiry in response to the confirmation request.
A gatekeeper on the Internet that knows From the port number management circuit, the connection control IP address, port
Set the gateway number as the sender and request multiple simultaneous connections
In the connection control packet indicating the telephone number, the gatekeeper
Inquire the connection control IP address of the destination gateway
Setoshi; The gatekeeper was notified of the inquiry.
Connection control IP address as destination and port number management
Connection source IP address and port number from the circuit
Call IP address, port number of call IP address
Call with a connection control packet with the
If you receive a call from Toway, the above port number
The connection control IP address and port number are sent from the number management circuit.
The gate key in the connection control packet set as the sender
Check the phone number given to you in the inquiry; phone number
After confirming the above, the connection control IP address is sent from the port number management circuit.
Address and port number management source
Call IP address from the road, port number of call IP address
No other call was made with a connection control packet
A connection control circuit that calls the gateway, Gateways calling each other in the connection control circuit
With the call IP address attached from the connected gateway
And the port number of the call IP address as the destination
From the port number management circuit, call IP address, call IP address
Send and receive call packets that originate from the port number of the dress
A VoIP which comprises a communication circuit section for receiving
Address setting system. 2. The connection control circuit is from a gateway.
When making an inquiry to the gatekeeper , the gateway
When confirming with the gatekeeper, from the gateway to the gate
Search the port number management circuit when calling the way
The connection control pattern with the free port number searched by
The setting according to claim 1, characterized in that
VoIP address setting system. 3. The communication circuit is a gated caller.
When making a call between two ways, the port number management
Search the route and use the found free port number as the source
The call packet is set in the call packet.
The described VoIP address setting system. 4. The port number management circuit is a connection control IP.
Manages the usage status of each port number of the address and
Judgment of addition of connection control IP address based on number usage
The VoIP application according to claim 1, wherein
Dress setting system. 5. The port number management circuit is a call packet.
The usage status of each port number of
Characterized by determining whether to add a call packet from the usage situation
The VoIP address setting system according to claim 1.
Mu. 6. A game for connecting a telephone network and the Internet
In the way of setting VoIP address of toei,Connection control packet to control connection with gateway, call
Connection control IP address
Address, call IP address, and port of each upper layer.
Process of separating the port number and managing it in the port number management circuit
When, The telephone number of the connection destination with the gatekeeper on the Internet,
Manages the relationship of the connection control IP address of the gateway
Then, the gateway of the connection destination responds to the inquiry showing the telephone number.
Notify the connection control IP address of the ray or send a confirmation request
To notify the telephone number shown in the inquiry, From the port number management circuit, the connection control IP address, port
Set the gateway number as the sender and request multiple simultaneous connections
In the connection control packet indicating the telephone number, the gatekeeper
Inquire the connection control IP address of the destination gateway
And the process of The connection system notified from the gatekeeper in response to the inquiry
Is the port number management circuit with the IP address as the destination?
From the connection control IP address and port number And then
Attach the talk IP address and port number of the call IP address
The step of calling with the connection control packet If you receive a call from another gateway,
From the port number management circuit to the connection control IP address and port number
The connection control packet with the
To confirm the telephone number shown in the inquiry
And After confirming the telephone number, connect from the port number management circuit.
The above IP address and port number are used as the sender
No. management circuit to call IP address, call IP address
Call using a connection control packet with a port number attached
And the process of calling to another gateway, Gateways calling each other in the connection control circuit
Attached from the gateway you are connecting toCall IP address
And the port number of the call IP address as the destination
From the port number management circuit, call IP address, call IP address
Send and receive call packets with the port number of the dress as the sender
And a step of performing a communication
Setting method.