WO2005117403A1 - 回線切替装置及び方法、並びにゲートウェイ装置 - Google Patents
回線切替装置及び方法、並びにゲートウェイ装置 Download PDFInfo
- Publication number
- WO2005117403A1 WO2005117403A1 PCT/JP2005/009471 JP2005009471W WO2005117403A1 WO 2005117403 A1 WO2005117403 A1 WO 2005117403A1 JP 2005009471 W JP2005009471 W JP 2005009471W WO 2005117403 A1 WO2005117403 A1 WO 2005117403A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- subscriber
- exchange
- analog
- communication
- line
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/125—Details of gateway equipment
Definitions
- the present invention relates to a line switching device and method for switching line communication lines, and a gateway device to which the line switching device and method are applied.
- Such a VoIP communication system includes, for example, as shown in Fig. 8, a subscriber terminal 100, a VoIP adapter 110, and a splitter 120 installed in a subscriber's house, and a splitter 120, installed in an exchange. It comprises a DSLAM (Digital Subscriber Line Access Multiplexer) 160, an IP network 170 such as the Internet, and a terminal (VoIP terminal) 180 on the other end.
- DSLAM Digital Subscriber Line Access Multiplexer
- IP network 170 such as the Internet
- VoIP terminal Voice over IP
- the VoIP adapter 110 selects whether to use analog VoIP communication in accordance with the requested partner number.
- VoIP adapter 110 compresses and encodes an analog communication signal from subscriber terminal 100 to form a packet addressed to the terminal on the other end. This packet is modulated into an ADSL signal by a modem in the VoIP adapter 110 and transmitted to the subscriber line via the splitter 120.
- the packet separated and demodulated by the splitter 120 on the switching center side is supplied to the DSLAM 160 and supplied to the VoIP terminal 180 on the other side via the IP network 170.
- the voice signal from the VoIP terminal 180 is supplied to the subscriber terminal 100 through a route reverse to the above, and voice communication is enabled.
- the present invention has been made in view of the above-described problems, and provides a line switching apparatus and method capable of contributing to improvement of user convenience and improvement of communication service quality. It is an object of the present invention to provide an applied gateway device.
- the line switching device is installed in a switching center, and a subscriber line from an analog terminal device, an analog communication signal from an analog terminal device, and a signal transmitted via a network.
- the analog terminal device includes, for example, a telephone, a facsimile device, and the like used in a conventional analog communication service.
- a direct connection means a force such as a physical switch can be used.
- a means such as a relay for switching in response to a switch input can also be used.
- the predetermined condition of the call may be, for example, a request for a specific service starting with 1 or a call for a number not covered by the service.
- the gateway device is installed in the exchange, performs mutual conversion between analog communication signals of the analog terminal device and communication data via the network, and makes a call of the analog terminal device.
- the signal conversion means having an exception processing means for outputting an analog communication signal, the subscriber line from the analog terminal device, the signal conversion means, and switching of connection between the subscriber exchange are performed.
- a line switching means having a direct connection means for directly connecting a subscriber line and a local exchange.
- the signal conversion means Before the operation is stopped, the subscriber line is directly connected to the subscriber exchange by the line switching device.
- the communication service such as a VoIP service by the signal conversion means
- the subscriber line is directly connected to the subscriber evacuation, thereby securing the communication by the analog communication signal. Can be.
- the switching time of the communication path can be reduced and the quality of communication service can be improved.
- FIG. 1 is a block diagram showing a configuration of a communication system according to Embodiment 1 of the present invention.
- FIG. 2 is a block diagram showing a configuration of a VoIP processing unit of a gateway device constituting the communication system.
- FIG. 3 is a diagram showing an operation of an exchange configuring the communication system.
- FIG. 4 is a diagram showing an operation of an exchange configuring the communication system.
- FIG. 5 is a perspective view showing a main part of the gateway device.
- FIG. 6 is a perspective view showing a main part of the gateway device.
- FIG. 7 is a block diagram showing a configuration of a communication system according to Embodiment 2 of the present invention.
- FIG. 8 is a block diagram showing an example of a conventional VoIP communication system.
- FIG. 9 is a block diagram showing a configuration example of a conventional VoIP communication system.
- the present invention can be applied to a communication system that uses both VoIP communication via a network such as the Internet and communication using a conventional analog public communication network.
- a communication system includes a subscriber terminal (analog terminal device) 10 used by a user for a telephone call and a call in response to a request from the subscriber terminal 10.
- Exchange 20 for setting up the network and other analog public telephones to which other subscriber terminals are connected. It has a public switched telephone network (PSTN) 30 and a network 40 such as the Internet.
- PSTN public switched telephone network
- the subscriber terminal 10 is a conventional analog terminal such as a telephone or a facsimile machine, and is connected to the exchange 20 via a subscriber line.
- the exchange 20 includes a subscriber line accommodating terminal board 21 to which a subscriber line from each subscriber terminal 10 is connected, a subscriber exchange for performing call setting and exchange processing between the subscriber terminals 10, and a subscriber line.
- a VoIP processing unit 24 for performing mutual conversion and communication control between an analog communication signal supplied from the subscriber terminal 10 via the accommodation terminal plate 21 and communication data supplied via the network 40; Wire accommodation terminal board 21, subscriber exchange
- a switching unit 23 for switching the connection of the VoIP processing unit 24 and a router 25 for controlling distribution of communication data between the VoIP processing unit (signal conversion means) 24 and the network 40 are provided.
- the switching section 23 includes a switch 23a that can directly connect a signal from the subscriber line accommodating terminal board 21 to the local exchange 22.
- This switch has, for example, a push lock type instruction input button that is kept pressed, so that the operator can easily recognize the current switch state when operating the instruction input button. It is composed of
- the VoIP processing unit 24 includes an AD conversion unit 24a that converts an analog communication signal supplied via the switching unit 23 into a digital signal, and a communication signal that is converted into a digital signal.
- An encoding unit 24b for performing compression encoding of the data a transmitting unit 24c for constructing and transmitting a data packet from the encoded communication data, and extracting communication data from a data bucket supplied through the router 25.
- the section from the subscriber terminal 10 to the subscriber line accommodation terminal board 21 has the same configuration as the conventional analog public communication network.
- a gateway device By simply connecting to a gateway device, users can use VoIP communication services using conventional analog communication terminals such as telephones and facsimile devices. For this reason, it is possible to contribute to improving the convenience of the user.
- the control unit 24g of the VoIP processing unit 24 determines the other party according to the dial number, and receives a target of the VoIP communication service. In the case of, the IP address of the other party's subscriber terminal 10 is obtained, and the transmission unit 24c is notified to generate a data packet requesting a connection connection.
- the control unit 24g returns. Start voice communication.
- the control unit 24g sets the switching unit 23
- the switch 24h is controlled so that the analog communication signal from the switch is returned to the switching unit 23.
- the analog communication signal returned to the switching unit 23 is supplied to the subscriber exchange via the switching unit 23.
- the contact of the switch 23a of the switching unit 23 is open, and the signal from the subscriber line accommodating terminal board 21 is a VoIP signal. It is supplied to the processing unit 24.
- the switch 23a is operated to directly connect the subscriber line accommodating terminal board 21 and the subscriber exchange 22, and then the VoIP processing unit 24 is removed.
- the switching unit 23 and the VoIP processing unit 24 are used in a state of being housed in a rack, for example, as shown in FIG.
- the switching unit 23 and the VoIP processing unit 24 are each configured as a single board, and are configured to be connected via a backplane.
- the switching unit 23 and the VoIP processing unit 24 are shown as a pair.
- a single switching unit 23 may correspond to a plurality of VoIP processing units 24. In this case, it is desirable that the switching unit 23 be provided with a switch 23a for each VoIP processing unit 24.
- the switch 23a When performing maintenance, for example, as shown in FIG. 6, the switch 23a is pressed, and then the Vol P processing unit 24 is pulled out of the rack.
- the switch 23a When the switch 23a is pressed, the subscriber line accommodating terminal board 21 is directly connected to the subscriber exchange, so that even if the VoIP processing unit 24 is removed, the conventional communication service via the PSTN 30 is provided. Can continue to provide. Therefore, it is possible to avoid the suspension of the communication service and contribute to the improvement of the quality of the communication service. it can.
- the subscriber terminal 10 can be used together with a data communication service such as an ADSL service.
- a communication signal from an information communication terminal such as a personal computer (PC) 70 is transmitted via a subscriber line via a modem 60 and a splitter 50.
- This communication signal is split by the splitter 50 on the exchange 20 side and supplied to the router 25 via the D SLAM 80.
- the subscriber terminal 10 is also connected to the subscriber line via the splitter 50, but the communication signal from the subscriber terminal 10 is separated by the splitter 50 on the exchange 20 side, and is passed through the subscriber line accommodation terminal board 21. It is supplied to the switching unit 23.
- the user of the subscriber terminal 10 uses the VoIP communication service by the same device, dial operation, and the like as in the conventional case, as in the first embodiment. be able to. Therefore, as in the first embodiment, it is possible to contribute to the improvement of user convenience and the improvement of communication service quality.
- the switching unit 23 is shown as a physical switch. However, a switch for inputting an instruction and a switching unit such as a relay that operates in accordance with the input of the switch are provided. The configuration can be changed as appropriate, such as by using it.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006513893A JP4393512B2 (ja) | 2004-05-25 | 2005-05-24 | 回線切替装置及び方法、並びにゲートウェイ装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004154459 | 2004-05-25 | ||
JP2004-154459 | 2004-05-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005117403A1 true WO2005117403A1 (ja) | 2005-12-08 |
Family
ID=35451256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/009471 WO2005117403A1 (ja) | 2004-05-25 | 2005-05-24 | 回線切替装置及び方法、並びにゲートウェイ装置 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4393512B2 (ja) |
TW (1) | TW200614752A (ja) |
WO (1) | WO2005117403A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05244259A (ja) * | 1992-02-28 | 1993-09-21 | Nec Corp | 電話交換機 |
JPH08289013A (ja) * | 1995-04-14 | 1996-11-01 | Nec Corp | 障害加入者回路切換装置 |
WO1999009716A1 (fr) * | 1997-08-19 | 1999-02-25 | Yugen Kaisha Ls Net | Procede de communication avec des appareils d'abonne via un reseau de communications mondial |
JP2002247192A (ja) * | 2000-09-29 | 2002-08-30 | Lucent Technol Inc | 加入者回線テストシステム及びその方法 |
JP2003061118A (ja) * | 2001-07-20 | 2003-02-28 | Samsung Electronics Co Ltd | 非対称デジタル加入者伝送システムの加入者切り換え装置及び加入者ユニット切り換え方法 |
-
2005
- 2005-05-24 WO PCT/JP2005/009471 patent/WO2005117403A1/ja active Application Filing
- 2005-05-24 JP JP2006513893A patent/JP4393512B2/ja not_active Expired - Fee Related
- 2005-05-25 TW TW094117083A patent/TW200614752A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05244259A (ja) * | 1992-02-28 | 1993-09-21 | Nec Corp | 電話交換機 |
JPH08289013A (ja) * | 1995-04-14 | 1996-11-01 | Nec Corp | 障害加入者回路切換装置 |
WO1999009716A1 (fr) * | 1997-08-19 | 1999-02-25 | Yugen Kaisha Ls Net | Procede de communication avec des appareils d'abonne via un reseau de communications mondial |
JP2002247192A (ja) * | 2000-09-29 | 2002-08-30 | Lucent Technol Inc | 加入者回線テストシステム及びその方法 |
JP2003061118A (ja) * | 2001-07-20 | 2003-02-28 | Samsung Electronics Co Ltd | 非対称デジタル加入者伝送システムの加入者切り換え装置及び加入者ユニット切り換え方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005117403A1 (ja) | 2008-04-03 |
TW200614752A (en) | 2006-05-01 |
JP4393512B2 (ja) | 2010-01-06 |
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