Telephone connection system, telephone connecting method,...

Details Telephone connection system, telephone connecting method,... Telephone connection system, telephone connecting method,...

2002-04-02

2004-04-27

Chan, Wing F. (Department: 2643)

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

C379S090010, C379S093070, C379S212010

Reexamination Certificate

active

06728350

ABSTRACT:

BACKGROUND OF THE INVENTION
This application claims benefit of Japanese Patent Application No. 2001-107767 filed on Apr. 5, 2001, the contents of which are incorporated by the reference.
The present invention relates to a telephone connection system, a telephone connection method, a home transmission unit and control programs for their system, more particularly to a telephone connection system, a telephone connection method, a home transmission unit and control programs for said system suitable to for connection via an internet network.
Among recent telephone connection systems is, for instance, VoIP (Voice over IP). In VoIP, a converter for conversion between voice and IP signal is installed as a common trunk in a telephone switch station, and in response to dialing of a particular telephone number by a telephone service subscriber, the common trunk is captured for communication via the internet.
The prior art telephone connection system of this type, as shown in
FIG. 3
, a subscriber telephone set
1
, a metallic subscriber line
2
, a telephone switch
3
, a common trunk
4
, a subscriber telephone set
11
, a metallic subscriber line
12
, a telephone switch
13
, a common trunk
14
, a common trunk managing unit
20
and an internet NW.
In this telephone connection system, when the calling subscriber off-hooks the subscriber telephone set
1
and dials a particular number, the telephone switch
3
captures the common trunk
4
. The common trunk
4
transmits guidance to the calling subscriber such as to input the opposite side data to the calling subscriber. When the calling subscriber has listened to the guidance dials the telephone number corresponding to the subscriber telephone set
11
of the called subscriber. The common trunk
4
makes an inquiry to the common trunk managing unit
20
via the itnernet NW to find out the common trunk
14
accommodating the subscriber telephone set
11
. The common trunk managing unit
20
receives the telephone number of the subscriber telephone set
11
from the common trunk
4
, and returns the message that the subscriber telephone set
11
is accommodated in the common trunk
14
. According to the returned message data, the common trunk
14
starts the telephone switch
13
to ring the subscriber telephone set
11
for called subscriber. When the called subscriber answers the call, the internet telephone service is provided.
FIG. 4
is a schematic showing of a different prior art telephone connection system.
As shown in the Figure, this telephone connection system comprises a subscriber telephone set
31
, a subscriber terminal
32
, an xDSL (x Digital Subscriber Line) home modem
33
, a splitter
34
, a metallic subscriber line
35
, a splitter
36
, a telephone switch
37
, a subscriber telephone set
41
, a subscriber terminal
42
, an xDSL home model
43
, a splitter
44
, a metallic subscriber line
45
, a splitter
46
, an xDSL station side unit
47
, an internet provider
45
and an internet NW.
In this telephone connection system, when the calling subscriber off-hooks the subscriber telephone set
31
, the set
31
is connected via the splitter
34
, metallic subscriber line
35
and the splitter
36
to the telephone switch
37
. When the subscriber then dials the telephone number corresponding to the subscriber telephone set
41
, the subscriber telephone set
41
is ringed via the splitter
46
, the metallic subscriber line
45
and the splitter
44
. When the called subscriber answers the call by off-hooking the subscriber telephone set
41
, the telephone connection service is provided.
The subscriber terminal
32
is also connected via the xDSL home modem
33
, the splitter
34
, the metallic subscriber line
35
and the splitter
36
to the xDSL station side unit
47
, and thence connected via the internet NW to the internet provider
48
. Likewise, the subscriber terminal
42
is connected via the xDSL home model
43
, the splitter
44
, the metallic subscriber line
45
and the splitter
46
to the xDSL station side unit
47
, and thence connected via the internet NW to the internet provider
48
. A shown, the subscriber telephone sets
31
and
41
and the subscriber terminals
32
and
42
are used independently although they use metallic subscriber lines
35
and
45
one each.
However, the above prior art telephone connection system has the following problems. In the telephone connection system shown in
FIG. 3
, it is difficult to keep the line number of common trunks
4
and
14
that corresponds to the traffic, fees of use of the common trunks
4
and
14
are charged to the subscribers, special dials are added to make the operation cumbersome, and the service area is limited. A further problem in the telephone connection system shown in
FIG. 4
is that in case when, for instance, the called subscriber has gone out and cannot off-hook the subscriber telephone set
41
, the telephone connection service is not provided.
SUMMARY OF THE INVENTION
The present invention has been intended in view of the above background, and it has an object of providing a telephone connection system, a telephone connection method, a home transmission unit and control programs for the system, method and unit, which can provide telephone connection service over a broad zone in response to a simple operation.
According to an aspect of the present invention, there is provided a telephone connection system comprising a first subscriber telephone set, a home transmission unit, a subscriber line, a telephone switch, a second subscriber telephone set, a fast digital communication line, a fast digital switch unit, an internet, an internet provider and a terminal unit, wherein: when the call of the second subscriber telephone set is received via the telephone switch and the subscriber line to the first subscriber telephone set, the home transmission unit generates a called electronic mail indicative of the call reception, and feeds said mail via the fast digital communication line, the fast digital switch unit and the internet to the internet provider for transmission of the data via the internet to the terminal unit, and when a reception request is provided from the terminal unit, the home transmission unit feeds the call via the fast digital communication line, the fast digital switch and the internet to the internet provider for transmission of the data via the internet to the terminal unit.
According to another aspect of the present invention, there is provided a telephone connection system comprising a first subscriber telephone set, a home transmission unit, a subscriber line, a telephone switch, a second subscriber telephone set, a fast digital switch unit, an internet, an internet provider and a terminal unit, wherein: when the call of the second subscriber telephone set is received via the telephone switch and the subscriber line to the first subscriber telephone set, the home transmission unit generates a called electronic mail indicative of the call reception, and feeds said mail via the subscriber line as a fast digital communication line, the fast digital switch unit and the internet to the internet provider for transmission of the data via the internet to the terminal unit, and when a reception request is provided from the terminal unit, the home transmission unit feeds the call via the fast digital communication line, the fast digital switch and the internet to the internet provider for transmission of the data via the internet to the terminal unit.
The fast digital communication line is an xDSL (x Digital Subscriber Line) common to the subscribers.
According to other aspect of the present invention, there is provided a telephone connection method comprising steps of: in response to receipt of a call of a second subscriber telephone set via a telephone switch and a subscriber line to a first subscriber telephone set, generating a called electronic mail indicative of the call reception by a home transmission unit; feeding the mail via a fast digital communication line, a fast digital switch unit and an internet to an inte

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