WO2002041613A1 - Device for telephone line disengagement following the reception of a call waiting - Google Patents
Device for telephone line disengagement following the reception of a call waiting Download PDFInfo
- Publication number
- WO2002041613A1 WO2002041613A1 PCT/IT2000/000467 IT0000467W WO0241613A1 WO 2002041613 A1 WO2002041613 A1 WO 2002041613A1 IT 0000467 W IT0000467 W IT 0000467W WO 0241613 A1 WO0241613 A1 WO 0241613A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- telephone line
- modem
- call
- line
- telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/428—Arrangements for placing incoming calls on hold
- H04M3/4285—Notifying, informing or entertaining a held party while on hold, e.g. Music On Hold
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
Definitions
- the present invention relates to a device for telephone line disengagement following the reception of a call-waiting signal. More particularly, the invention relates to a device for telephone line disengagement which allows to disengage the line when a call-waiting signal arrives in order to allow the user to reply to such call.
- BACKGROUND ART As is known, the increasing growth and the corresponding diffusion of the Internet has brought many users to connect daily to it for considerable time, thus keeping the home telephone line engaged.
- Modern telephone exchanges send a call-waiting signal which allows the user, even if he is busy with other calls, to be aware that another subscriber is calling him and therefore to decide whether he wishes to continue the conversation currently in progress or answer the incoming call.
- connection to the Internet occurs by means of a device, commonly known as modem, which allows to connect the user's personal computer to the network by means of the telephone system and the server that allows access to the network and accordingly allows to send and receive data from the network.
- modem is "silent" with respect to call-waiting signals sent by the exchange.
- the aim of the present invention is to provide a device for telephone line disengagement following the reception of a call-waiting signal which allows the user to disengage the line and answer the incoming call.
- a device for telephone line disengagement following the reception of a call-waiting signal characterized in that it comprises means adapted to detect electrical variations of the telephone line consequent to the transmission of a call-waiting signal, said electrical variation detection means being connected to means for disengaging the line which are adapted to disengage the modem from the telephone line, allowing the user to reply to the incoming call.
- Figure 1 is a block diagram of the connection of a device according to the present invention to the telephone system and to the modem of the user;
- FIG. 2 is a block diagram of the circuit that constitutes the device according to the present invention.
- Figure 3 is a detailed block diagram of the connection of the device according to the present invention. WAYS OF CARRYING OUT THE INVENTION
- FIG 3 illustrates in detail the connection of the device 1 according to the invention, by virtue of the input means 5, to the telephone system, and particularly to the wire pair 2a, 2b.
- the output of the device according to the invention constituted by the output means 9, allows connection, by means of a connecting cable 16, to the modem 3, which is in turn connected to the personal computer 4, as shown in Figure 1.
- the operation of the device according to the present invention is as follows.
- the user uses the modem 3; the modem, controlled by the computer 4, activates a data link-up to the server that operates the service.
- the current flows from the rectifier means 6, and if the contact of the switching means 12 is switched to the position a (idle position), the actuation means 7 for signaling and line disengagement keep the circuit closed on the modem.
- the switching means 12 must be switched to the contact b.
- the device according to the invention can be configured as a unit which is external to the modem or can be installed directly inside the modem, the personal computer, or any other device that has to engage the telephone line for its operation.
- the device according to the invention fully achieves the intended aim and objects, since it allows to automatically disengage the telephone line when a call-waiting signal arrives, thus allowing the user to reply to the call, interrupting his online session on the Internet.
- the operational amplifier 10 can be replaced by a conventional amplifier which receives in input the same signals acquired at the terminals of the resistor 8; said signals, at the output of the amplifier, are separated from the DC component, are then rectified and are finally sent to a filtering cell, thus achieving the same result obtained by using the operational amplifier 10 shown in Figure 2.
- a second capacitor 22 is connected between the emitter terminal of the transistor 20 and the positive of the power supply, while the collector terminal of the transistor 20 is connected to the negative (ground) of the power supply voltage across a first resistor 23.
- a second resistor 24 is instead connected between the base terminal and the collector terminal of the transistor 20.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2000/000467 WO2002041613A1 (en) | 2000-11-16 | 2000-11-16 | Device for telephone line disengagement following the reception of a call waiting |
AU2001218856A AU2001218856A1 (en) | 2000-11-16 | 2000-11-16 | Device for telephone line disengagement following the reception of a call waiting |
EP00981632A EP1247393A1 (en) | 2000-11-16 | 2000-11-16 | Device for telephone line disengagement following the reception of a call waiting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2000/000467 WO2002041613A1 (en) | 2000-11-16 | 2000-11-16 | Device for telephone line disengagement following the reception of a call waiting |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002041613A1 true WO2002041613A1 (en) | 2002-05-23 |
Family
ID=11133582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT2000/000467 WO2002041613A1 (en) | 2000-11-16 | 2000-11-16 | Device for telephone line disengagement following the reception of a call waiting |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1247393A1 (en) |
AU (1) | AU2001218856A1 (en) |
WO (1) | WO2002041613A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0758175A1 (en) * | 1995-01-05 | 1997-02-12 | Ntt Mobile Communications Network Inc. | Communication switching system and communication switching method |
EP0926867A2 (en) * | 1997-12-23 | 1999-06-30 | AT&T Corp. | Call waiting feature for a telephone line connected to the internet |
US5982774A (en) * | 1996-04-01 | 1999-11-09 | At&T Corp. | Internet on hold |
-
2000
- 2000-11-16 AU AU2001218856A patent/AU2001218856A1/en not_active Abandoned
- 2000-11-16 EP EP00981632A patent/EP1247393A1/en not_active Withdrawn
- 2000-11-16 WO PCT/IT2000/000467 patent/WO2002041613A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0758175A1 (en) * | 1995-01-05 | 1997-02-12 | Ntt Mobile Communications Network Inc. | Communication switching system and communication switching method |
US5982774A (en) * | 1996-04-01 | 1999-11-09 | At&T Corp. | Internet on hold |
EP0926867A2 (en) * | 1997-12-23 | 1999-06-30 | AT&T Corp. | Call waiting feature for a telephone line connected to the internet |
Also Published As
Publication number | Publication date |
---|---|
EP1247393A1 (en) | 2002-10-09 |
AU2001218856A1 (en) | 2002-05-27 |
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