GB2413733A - Voice over internet communications - Google Patents

Voice over internet communications Download PDF

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Publication number
GB2413733A
GB2413733A GB0409618A GB0409618A GB2413733A GB 2413733 A GB2413733 A GB 2413733A GB 0409618 A GB0409618 A GB 0409618A GB 0409618 A GB0409618 A GB 0409618A GB 2413733 A GB2413733 A GB 2413733A
Authority
GB
United Kingdom
Prior art keywords
network
mobility proxy
voice over
proxy
devices
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Withdrawn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
GB0409618A
Other versions
GB0409618D0 (en
Inventor
Rainer Zimmermann
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to GB0409618A priority Critical patent/GB2413733A/en
Publication of GB0409618D0 publication Critical patent/GB0409618D0/en
Publication of GB2413733A publication Critical patent/GB2413733A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/102—Gateways
    • H04L65/1043—Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2207/00—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place
    • H04M2207/20—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place hybrid systems
    • H04M2207/206—Type of exchange or network, i.e. telephonic medium, in which the telephonic communication takes place hybrid systems composed of PSTN and wireless network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/005—Interface circuits for subscriber lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A network, e.g. LAN 2 supports VOIP for fixed terminals 3-6 using an appropriate switch 6 and interface 7. To accommodate mobile terminals 10, within a cellular network having base stations 8 and 9, a mobility proxy 11 is provided. A base station communicates 13, with the mobility proxy 11, which then behaves as a VOIP unit towards the LAN 2. If a mobile hands over to another base station 9 a new link 16 is provided. Thus all the mobiles use a single interface 7, rather than requiring one subscriber line card each. The mobility proxy may connect to other proxies 17 giving access to more networks.

Description

1 2413733 A communications network This invention relates to a
communications network providing Voice over Internet Protocol communication to mobiles. s
Voice over Internet Protocol based communications systems enable carrying of voice over data networks. In current systems Cordless Mobile Integration (CMI) devices are connected to the system via integrated Subscriber Line Cordless (SLC) Linecards.
To allow for roaming and handover a time division multiple access based extension connection is used to connect the roamed subscriber via a visited SLC to the home SLC. This is an expensive approach since in practical systems additional hardware is required to establish these connections. Furthermore, for pure VoIP systems such as that of the HiPath 5000 iM switch sold by Siemens Plc this approach is not possible because it is a pure VoIP platform.
According to the invention there is provided a Voice over Internet Protocol communications network comprising a mobility proxy to represent cordless devices to the network as VoIP devices.
A specific embodiment of the invention will now be described by way of example only with reference to the drawings in which: Figure l shows a communications network in accordance with the invention; and Figure 2 to 5 shows communication interactions within the network.
With reference to figured, a communications network l comprises a Local Area Network LAN linking together a number of network end points. The end points include three Highpath Feature Access (HFA) telephones 3, 4 and 5; a Siemens HiPath 3000/5000 switch; a HG lSOOGK interface on the Hipath 3000/5000 to the LAN 2; a plurality of base stations 8 and 9; a plurality of cordless devices 10 and a mobility proxy 11.
The cordless devices 10 are Cordless Mobile Integration (CMI) devices which communicate with the other network nodes via a raid interface and the base-stations 8, 9. The base-stations are organised on a cellular basis to provide area coverage.
In a conventional network, each CMI device 10 would require access to the HiPath 3000/5000 via a Subscriber Line Cordless Linecard (SLC). However, in the network in accordance with the invention, the mobility Proxy 11 interfaces the base-stations to the HiPath 3000/5000 via the HG1SOOGK interface 7. To do this signalling takes place along path 12 between HFA device 3, along path 13 between CMI device 10 and the mobility proxy 11, and along path 14 between the HiPath 3000/5000 6 and mobility proxy 11. Thus, by utilisation of the proxy 11 one interface 7 may be used for all devices on the LAN 2 including the CMI devices 10. With the call established payload passes along path 15.
In the event that a user of one of the CMI devices 10 moves from one base station to another then the control signals are re-routed in the proxy 11. For example along path 16.
It will be appreciated that additional networks may be served by further proxies 17 and if the CMI device roams to such an additional network data exchange may take place between the proxies to maintain the service as indicated by arrow 18 The way in which the mobility proxy 11 establishes connection to the base-stations is shown in figure 2. This phase requires H.225 setup and connect messages to be exchanged with each of the basestations.
Figure 3 shows the process of registration of the CMI devices via the base-station and the proxy 11 to the HiPath 3000/5000 6.
Figure 4 shows the call set up to a CMI device via the mobility proxy and figure 5 shows the interactions involved in handover. The CorNet-T radio protocol is one produced by Siemens.

Claims (5)

  1. Claims 1. A Voice over Internet Protocol communications network comprising
    an mobility proxy to represent cordless devices to the network as VoIP devices.
  2. 2. A network as claimed in claim 1 wherein the mobility proxy is linked by a link to base-stations serving the cordless devices.
  3. 3. A network as claimed in claim 2 wherein the link operates in accordance to a H.225 protocol.
  4. 4. A network as claimed in claim 3 wherein the link operates in accordance with a CorNet-T radio protocol.
  5. 5. A network substantially as hereinbefore described with reference to and as illustrated by the drawings.
GB0409618A 2004-04-30 2004-04-30 Voice over internet communications Withdrawn GB2413733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0409618A GB2413733A (en) 2004-04-30 2004-04-30 Voice over internet communications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0409618A GB2413733A (en) 2004-04-30 2004-04-30 Voice over internet communications

Publications (2)

Publication Number Publication Date
GB0409618D0 GB0409618D0 (en) 2004-06-02
GB2413733A true GB2413733A (en) 2005-11-02

Family

ID=32408276

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0409618A Withdrawn GB2413733A (en) 2004-04-30 2004-04-30 Voice over internet communications

Country Status (1)

Country Link
GB (1) GB2413733A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001003392A1 (en) * 1999-07-01 2001-01-11 Koninklijke Philips Electronics N.V. Voice-over-ip gateway
US20010015968A1 (en) * 1997-07-21 2001-08-23 Alan Eric Sicher Enhanced interworking function for interfacing digital cellular voice and fax protocols and internet protocols
WO2001063898A2 (en) * 2000-02-22 2001-08-30 Nortel Networks Limited System and method for controlling a wireless packet switched voice call
WO2001076276A2 (en) * 2000-04-05 2001-10-11 Telefonaktiebolaget Lm Ericsson (Publ) Telecommunications network integrating cellular, packet-switched, and voice-over-ip infrastructures
US20010036172A1 (en) * 2000-02-03 2001-11-01 Aaron Haskal Wireless voice over internet protocol communication systems
US20020075850A1 (en) * 2000-12-20 2002-06-20 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for using the voice over internet protocol to handoff call connections
WO2003005741A2 (en) * 2001-07-06 2003-01-16 General Instrument Corporation Methods, apparatus, and systems for accessing mobile and voice over ip telephone networks with a mobile handset
US20030012170A1 (en) * 2001-07-13 2003-01-16 Dan Vassilovski System and method for extended sip headers for CDMA parameters

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010015968A1 (en) * 1997-07-21 2001-08-23 Alan Eric Sicher Enhanced interworking function for interfacing digital cellular voice and fax protocols and internet protocols
WO2001003392A1 (en) * 1999-07-01 2001-01-11 Koninklijke Philips Electronics N.V. Voice-over-ip gateway
US20010036172A1 (en) * 2000-02-03 2001-11-01 Aaron Haskal Wireless voice over internet protocol communication systems
WO2001063898A2 (en) * 2000-02-22 2001-08-30 Nortel Networks Limited System and method for controlling a wireless packet switched voice call
WO2001076276A2 (en) * 2000-04-05 2001-10-11 Telefonaktiebolaget Lm Ericsson (Publ) Telecommunications network integrating cellular, packet-switched, and voice-over-ip infrastructures
US20020075850A1 (en) * 2000-12-20 2002-06-20 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for using the voice over internet protocol to handoff call connections
WO2003005741A2 (en) * 2001-07-06 2003-01-16 General Instrument Corporation Methods, apparatus, and systems for accessing mobile and voice over ip telephone networks with a mobile handset
US20030012170A1 (en) * 2001-07-13 2003-01-16 Dan Vassilovski System and method for extended sip headers for CDMA parameters

Also Published As

Publication number Publication date
GB0409618D0 (en) 2004-06-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)