EP0988737A2 - Procede et appareil permettant de connecter des telephones ordinaires a un reseau de donnees - Google Patents

Procede et appareil permettant de connecter des telephones ordinaires a un reseau de donnees

Info

Publication number
EP0988737A2
EP0988737A2 EP98930023A EP98930023A EP0988737A2 EP 0988737 A2 EP0988737 A2 EP 0988737A2 EP 98930023 A EP98930023 A EP 98930023A EP 98930023 A EP98930023 A EP 98930023A EP 0988737 A2 EP0988737 A2 EP 0988737A2
Authority
EP
European Patent Office
Prior art keywords
data
telephone
connection
adapter
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98930023A
Other languages
German (de)
English (en)
Inventor
Theo Kanter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telia AB
Original Assignee
Telia AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telia AB filed Critical Telia AB
Publication of EP0988737A2 publication Critical patent/EP0988737A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/253—Telephone sets using digital voice transmission
    • H04M1/2535—Telephone sets using digital voice transmission adapted for voice communication over an Internet Protocol [IP] network

Definitions

  • the present invention relates to a method and an apparatus for connecting ordinary telephones to data communication networks.
  • IP Internet Protocol
  • PC Personal Computer
  • Telephones are generally available everywhere and they are easy to use. There is therefore a desire to provide an interface which will allow the use of an ordinary telephone for connecting to IP networks, even though it will not be possible to utilize all the possibilities offered by such a network, using only a telephone.
  • the adapter may be implemented as a microprocessor and placed inside the telephone housing. The ordinary telephone jack is then replaced by the data network connector.
  • An inexpensive way of connecting an ordinary telephone to a data network, such as a TCP/IP network and to an Internet telephone system is provided.
  • the adapter is configurable from the data network and may therefore be adapted to the changing requirements on speech coders/decoders, Internet telephony registration procedures, call request and call out procedures.
  • the equipment required according to the invention is easy to install for the user, as everything may be assembled and configured by the manufacturer before installation.
  • Figure 1 is a schematic drawing of a data network to which telephones are connected through adapters according to the invention
  • Figure 2 is a schematic drawing of a telephone connection to a IP network through an adapter according to the invention
  • Figure 3 is a flow chart of the activities earned out when an outgoing call is being set up
  • Figure 4 illustrates schematically the communication in the adapter in the set-up phase of a call
  • Figure 5 illustrates schematically the communication in the adapter while a call.is being made
  • Figure 6 shows the connection of a mobile or cellular telephone to a data network according to the invention.
  • Figure 1 shows an data network 1, to which a number of subscribers are connected.
  • the data network is taken to be a TCP/IP network, as this is the most commonly used network protocol today.
  • FIG 1 two telephone subscribers 3 are connected to the network through adapters 5 according to the invention.
  • the adapter 5 may be comprised in the telephone housing or anywhere between the telephone and the IP network. If the adapter is integrated in the telephone, the telephone may be connected to the IP network in the same way as a computer. Some of the ordinary telephone functions could then be omitted.
  • calls may be established from any subscriber 3 to any other terminal 3, 7 in the network.
  • Figure 2 shows a telephone 3 ' connected to an IP network 1 ' through an adapter 5 ' according to the invention.
  • the adapter 5' comprises the following units:
  • An input buffer IB and an output buffer OB which buffer the audio packages to be transmitted on the network and received from the network, respectively.
  • a Speech Coder/Decoder SC which encodes speech so that it can be transmitted on the IP network, which is packet switched, and decodes incoming packets containing speech, so that they can be received in the telephone.
  • a Call Handler CH which translates dialling and hook positions into configurable call requests that are handled by the Internet telephony system, and translates incoming calls from the Internet telephony system into dialling-tones and establishes calls
  • a register block REG which stores information about the Internet telephony A number. This number may be configured by a user using the telephone or from the
  • a Central Processing Unit CPU which controls the functions of the other blocks in the adapter 5.
  • Figure 3 is a flow chart of the actions performed when a telephone subscriber connected to the IP networks by an adapter according to the invention, wants to make a phone call.
  • Step S3 1 The user lifts the hook and an off-hook signal is transmitted to the Call Handler CH.
  • the signalling is done in a way common in the ait, for example by Dual Tone Multi Frequency (DTMF) signalling or voice control between the telephone and the adapter.
  • DTMF Dual Tone Multi Frequency
  • an I/O circuit in the adapter connects the keyboard directly to the CPU of the adapter.
  • Step S32 The Call Handler CH retrieves the A number from the register REG.
  • Step S33 The Call Handler CH signals to the TCP/IP stack that a connection through the IP network is requested.
  • Step S35 When an OK has been received from the B subscriber, the connection from the A subscriber to the B subscriber is set up through the network.
  • Figure 4 shows the connections between the units in the adapter that are used in the set-up phase of a call.
  • the adapter is identical to the one shown in Figure 2.
  • the Call Handler CH detects the off-hook state of the telephone and requests the A number from the register REG.
  • the Call Handler then requests the TCP/IP stack to set up the connection to the network in the way common in the ait.
  • Figure 5 shows the path taken by the speech through the adapter after the connection has been set up.
  • the adapter shown is identical to the one shown in Figure 2.
  • the outgoing data is stored in the input buffer IB.
  • the data is forwarded to the signal coder/decoder SC via the central processing unit CPU.
  • the signal coder/decoder SC compresses the data and forwards it via the central processing unit CPU to the TCP/IP stack, where the header field is added, before the packet is transmitted to the local area network.
  • the data packages are transmitted in the way common in the ait.
  • the Call Handler CH verifies that the call is intended for the subscriber connected to this adapter and initiates the set-up of the call through the TCP/IP stack.
  • the connections are similar to the ones shown in Figure 5, except that the output buffer OB is used instead of the input buffer IB. How to implement this is known to the skilled person.
  • FIG. 6 shows a possible connection between a mobile, or cellular, telephone ! 1 and a data network 13 according to the invention.
  • the mobile telephone 11 comprises the standard telephony functions 15, an adapter 17 according to the invention, that is, with similar functions to the adapters 5, 5' shown in the previous drawings, and a radio communication unit 19.
  • the connection to the network is a radio connection, and thus a communication unit 21 is needed at the entrance to the network as well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Cette invention concerne un appareil et un procédé permettant de connecter des téléphones ordinaires à un réseau de données. A cette fin, on utilise un système d'adaptation (5; 5') qui est disposé entre le téléphone (3; 3') et le réseau de données (1; 1'). Ce système d'adaptation (5; 5') comprend un dispositif qui va faire passer en mémoire tampon puis comprimer/décomprimer des données vocales avant de les transformer en paquets de données, et vice-versa.
EP98930023A 1997-06-23 1998-06-23 Procede et appareil permettant de connecter des telephones ordinaires a un reseau de donnees Withdrawn EP0988737A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9702382A SE510316C2 (sv) 1997-06-23 1997-06-23 Förfarande och anordning för anslutning av vanliga telefoner till datakommunikationsnät
SE9702382 1997-06-23
PCT/SE1998/001216 WO1998059469A2 (fr) 1997-06-23 1998-06-23 Procede et appareil permettant de connecter des telephones ordinaires a un reseau de donnees

Publications (1)

Publication Number Publication Date
EP0988737A2 true EP0988737A2 (fr) 2000-03-29

Family

ID=20407464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98930023A Withdrawn EP0988737A2 (fr) 1997-06-23 1998-06-23 Procede et appareil permettant de connecter des telephones ordinaires a un reseau de donnees

Country Status (4)

Country Link
EP (1) EP0988737A2 (fr)
AU (1) AU7950498A (fr)
SE (1) SE510316C2 (fr)
WO (1) WO1998059469A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29822259U1 (de) 1998-12-16 1999-04-08 Datenfernübertragung Rohm DAFÜR Gesellschaft mbH, 64367 Mühltal Computernetzwerk, Computer und Telefon
US6937596B2 (en) 1999-08-04 2005-08-30 Telefonaktiebolaget Lm Ericsson (Publ) IP based telephone system
DE60029105T2 (de) * 1999-08-04 2006-12-21 Telefonaktiebolaget Lm Ericsson (Publ) Ip - basiertes fernsprechsystem
AU2900001A (en) * 2000-01-25 2001-08-07 Telefonaktiebolaget Lm Ericsson (Publ) Encryption of payload on narrow-band ip links
EP1314299B1 (fr) 2000-09-01 2004-11-17 Nextlink.to A/S Terminal de communication, systeme et procede pour telephonie internet/reseau
EP1317118A1 (fr) * 2001-12-03 2003-06-04 Alcatel Une installation téléphonique pour fonctionner sur un réseau local

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5530699A (en) * 1994-05-17 1996-06-25 Motorola, Inc. Method for distributed voice conferencing in a fast packet network
JPH09135250A (ja) * 1995-11-10 1997-05-20 Toshiba Corp 音声信号伝送方式
JP3777638B2 (ja) * 1995-12-18 2006-05-24 ソニー株式会社 通話システムの端末装置及び通話方法
GB9616589D0 (en) * 1996-08-07 1996-09-25 Harper John Telephone system
IL120370A0 (en) * 1997-03-04 1997-07-13 Shelcad Engineering Ltd Internet and intranet phone system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9859469A3 *

Also Published As

Publication number Publication date
AU7950498A (en) 1999-01-04
SE9702382L (sv) 1998-12-24
WO1998059469A3 (fr) 1999-03-18
WO1998059469A2 (fr) 1998-12-30
SE9702382D0 (sv) 1997-06-23
SE510316C2 (sv) 1999-05-10

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