Source: https://patents.google.com/patent/US7649878?oq=7%2C328%2C163
Timestamp: 2018-04-20 11:47:58
Document Index: 10262817

Matched Legal Cases: ['art 171', 'art 11', 'art 16', 'art 18', 'art 11', 'art 11', 'art 192', 'art 11', 'art 11', 'art 11']

US7649878B2 - Circuit control apparatus and method - Google Patents
Circuit control apparatus and method Download PDF
US7649878B2
US7649878B2 US10999982 US99998204A US7649878B2 US 7649878 B2 US7649878 B2 US 7649878B2 US 10999982 US10999982 US 10999982 US 99998204 A US99998204 A US 99998204A US 7649878 B2 US7649878 B2 US 7649878B2
US10999982
US20050157702A1 (en )
A circuit control apparatus for establishing a connection to a communication partner via a public circuit network or via a computer network is disclosed. The circuit control apparatus includes: a specifying information storing part 171 for storing specifying information for specifying a called party to which the circuit control apparatus originates a call to establish a connection via the public circuit network; a circuit control part 11 for immediately originating a call via the public circuit network for establishing a connection to a called party specified by the specifying information, and for trying to originate a call via the computer network for establishing a connection to a called party that is not included in the specifying information storing part; and a changing part 16 for changing specifying information in the specifying information storing part.
An object of the present invention is to provide a circuit control apparatus and a method for decreasing a connection establishing time in a system that enables a telephone to connect to a called party via a computer network or via a public circuit network.
FIG. 2 is a block diagram for explaining a connection establishing procedure by using IP telephone adapters 1 a and 1 b;
FIG. 3 is a sequence chart showing a procedure for establishing a call connection via an IP telephone network;
In the following, embodiments of the circuit control apparatus and the method of the present invention are described with reference to figures.
A first embodiment of the present invention is described. In the first embodiment, the circuit control apparatus of the present invention is applied to an IP telephone adapter. FIG. 1 shows an example of a house-wiring around the IP telephone adapter.
The IP telephone adapter 1 accesses a control server (a SIP server, for example) via a circuit extending from the modular jack 7. After performing a signaling procedure for establishing a connection of VoIP, the IP telephone adapter 1 can connect to an IP telephone adapter in a called party. FIG. 2 is a block diagram for explaining a connection establishing procedure by using IP telephone adapters 1 a and 1 b. In the figure, a telephone 4 b can be reached only via an IP telephone network. A telephone 4 c can be reached via the IP telephone network and a public circuit network by using a gateway 9. A telephone 4 d cannot be reached via the IP telephone network. The “IP telephone network” is a telephone communication network based on a computer network including the control server and the gateway. In the example of FIG. 2, a SIP (session initiation protocol) server is used as a control server for performing the signaling procedure for establishing an VoIP connection. After the connection is established, communication data are exchanged between a calling party and a called party without the control server 8.
The “public circuit network” in this specification is a telephone communication network such as the PSTN (Public Switched Telephone Network) and the ISDN (Integrated Services Digital Network). The “computer network” is an IP (Internet Protocol) network such as the Internet, LAN and WAN.
Means for inputting the use circuit change instruction to the use circuit enforcedly determining part 18 may be a special button on an operation panel. Alternatively, the use circuit change instruction may be input via the telephone I/F 13 by dialing a predetermined number (“#31”, for example) before dialing the telephone number of the called party.
More particularly, when the control server 8 returns a response message “486 Busy Here” in response to the call request (INVITE), the circuit control part 11 determines that the called party can use VoIP. When the control server 8 returns a response message “380 Alternative Service” in response to the call request (INVITE), the circuit control part 11 determines that the called party cannot use VoIP.
The call origination interrupt request may be input by using a special button on an operation panel provided in the IP telephone adapter. In addition, the call origination interrupt request may be provided by dialing a specific number, “*”, “#” or a combination of these. Further, the request may be input from a PC via the PC I/F 12.
(1) For public circuit network: 400 Hz, 16 Hz modulation, 1 sec:ON—2 sec:OFF Repeat
(2) For computer network: 800 Hz, 16 Hz modulation, 1 sec:ON—2 sec:OFF Repeat
In the eleventh operation example, the ringing part 192 starts outputting the circuit type specific ringback tone (to be also referred to as “call origination start sound”) at a time when the circuit control part 11 starts a call origination process. The circuit type specific ringback tone corresponds to a circuit via which the circuit control part 11 starts the call origination.
(1) For public circuit network: 400 Hz, 125 msec:ON—125 msec:OFF Repeat
(2) For computer network: 400 Hz, 60 msec:ON—60 msec:OFF Repeat
In the following, an IP telephone adapter according to a second embodiment of the present invention is described.
For example, assuming “090” is registered as a special number, when originating a call to a telephone number having “090” at the beginning, if the circuit control part 11 determines that three digits from the top of the telephone number are the same as “090”, a call origination is performed via the public circuit network.
The add/delete instruction may be input by using a special button on an operation panel provided in the IP telephone adapter. In addition, the instruction may be provided by dialing a specific number, “*”, “#” or a combination of these. Further, the instruction may be input from a PC via the PC I/F 12.
Next, a third embodiment of the present invention is described. In the third embodiment, a multi-function (MF) machine is used as the telephone adapter of the first and second embodiments.
28. The circuit control method as claimed in claim 15, wherein, when the circuit control apparatus starts originating a call via an originating circuit, the circuit control apparatus starts outputting a circuit type specific ringback tone that corresponds to a type of the originating circuit.
US10999982 2003-12-05 2004-12-01 Circuit control apparatus and method Expired - Fee Related US7649878B2 (en)
JPNO.2003-408245 2003-12-05
JP2003-408245 2003-12-05
JP2003408245A JP4253570B2 (en) 2003-12-05 2003-12-05 Line control apparatus and method
US20050157702A1 true US20050157702A1 (en) 2005-07-21
US7649878B2 true US7649878B2 (en) 2010-01-19
ID=34729995
US10999982 Expired - Fee Related US7649878B2 (en) 2003-12-05 2004-12-01 Circuit control apparatus and method
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