GB2413733A - Voice over internet communications - Google Patents
Voice over internet communications Download PDFInfo
- 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- Withdrawn
Links
- 101100048435 Caenorhabditis elegans unc-18 gene Proteins 0.000 abstract description 4
- 230000001413 cellular effect Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
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
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- 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
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- 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)
- Claims 1. A Voice over Internet Protocol communications network comprisingan mobility proxy to represent cordless devices to the network as VoIP devices.
- 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. A network as claimed in claim 2 wherein the link operates in accordance to a H.225 protocol.
- 4. A network as claimed in claim 3 wherein the link operates in accordance with a CorNet-T radio protocol.
- 5. A network substantially as hereinbefore described with reference to and as illustrated by the drawings.
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)
| 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 |
-
2004
- 2004-04-30 GB GB0409618A patent/GB2413733A/en not_active Withdrawn
Patent Citations (8)
| 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) |