Internet telephone system

Details Internet telephone system Internet telephone system

2000-07-17

2004-09-14

Nguyen, Steven (Department: 2665)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C379S201110

Reexamination Certificate

active

06791973

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an Internet telephone system for making a long-distance call at a low charge by using the Internet.
2. Description of the Related Art
A voice communication system using the wide-area data communication network of the Internet, known as the Internet telephone system, is disclosed, for example, in Japanese Laid-open Patent H11-225218.
In the Internet telephone system disclosed in Japanese Laid-open Patent H11-225218, when it is ready to make an Internet call, it is notified between ISDN terminal adapters (TA), by an exchange of sub-addresses or a user-user information notice, and the calling side and destination side ISDN TA automatically dial up to the Internet, and an Internet call is started.
FIG. 16
is a configuration showing the conventional Internet telephone system disclosed in the publication.
FIG. 17
is a sequence diagram showing the operation of the conventional Internet telephone system.
The conventional Internet telephone system shown in FIG.
16
and
FIG. 17
makes an Internet call in the following procedure.
(1) The destination side ISDN TA
105
receives a call setting
104
including a sub-address of a predetermined number from the calling side ISDN TA
102
.
(2) The TA
105
, receiving the call setting
104
, rings the bell of a destination side telephone set
106
connected to itself.
(3) The TA
105
detects when the user hooks up the telephone set
106
, and connects to a destination side access point
109
.
(4) After connection, the TA
105
puts the predetermined number and acquired IP address on the sub-address of a call setting
107
, and sends out to the calling side ISDN TA
102
.
(5) The TA
102
receives the predetermined number and the IP address acquired at the destination side as the sub-address of the call setting
107
, and connects to a calling side access point
108
.
(6) After connection, the TA
102
sends the calling side IP address to the destination side IP address, and the both sides starts an Internet call.
(7) After start of the Internet call, the TA
102
and
105
send out a cut-off signal to the call setting sent from each side in order to terminate the mutual call settings, and layer
3
message for telephone call on the ISDN is closed.
The conventional Internet telephone system involves the following problems.
(1) The ISDN communication charge and the Internet connection charge at the destination side are at a charge of the destination party, and it is hard to obtain understanding.
(2) Call is possible only to the telephone set connected to the ISDN TA.
SUMMARY OF THE INVENTION
It is hence an object of the invention to present an Internet telephone system allowing the destination side telephone set to be free from ISDN communication charge and Internet connection charge, and allowing to make a call to a telephone set not connected to an ISDN terminal adapter (TA).
To solve the problems, the Internet telephone system of the invention comprises a calling side telephone set, a calling side ISDN TA connected to the calling side telephone set, a destination side ISDN TA for receiving a notice of a user-user information notice or a call setting from the calling side ISDN TA, and a destination side telephone set connected to the destination side ISDN TA, and makes an Internet call in the following procedure.
The calling side ISDN TA:
(1) judges if the destination is accessible to an Internet call or not when the telephone number of the destination side telephone set is specified by the calling side telephone set, and
(2) if judging that an Internet call is possible, sets the predetermined number, Internet connection member identification number and password, on the user-user information notice or the sub-address of the call setting, and sends out to the destination side ISDN TA.
The destination side ISDN TA:
(1) rings the bell of the destination side telephone set when receiving the predetermined number set on the user-user information notice or the sub-address of the call setting,
(2) connects to the access point of the destination side provider by the transmitted Internet connection member identification number and password when the destination side telephone set is hooked up, and
(3) transmits the destination side IP address acquired at the destination side access point to the calling side ISDN TA by putting the destination side IP address on the sub-address of the call setting or by user-user information notice.
The calling side ISDN TA:
(1) receives the destination side IP address, and connects to the access point of the calling side provider, and
(2) makes an Internet call by transmitting the calling side IP address acquired at the calling side access point to the destination side on the Internet.
The destination side telephone set utilizes the Internet connection member identification number and password sent from the calling side telephone set.
Further, the Internet telephone system of the invention comprises a calling side telephone set, a calling side ISDN TA connected to the calling side telephone set, a destination side ISDN TA for receiving a call setting from the calling side ISDN TA, and a destination side telephone set connected to the destination side ISDN TA, in which the destination side ISDN terminal adapter makes a call to the exchange network in the own local region when receiving a call setting of Internet call from the calling side ISDN TA.


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patent: 11225218 (1999-08-01), None
patent: WO 98/11704 (1998-03-01), None

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