EP1735991A1 - Multimedia-gateway - Google Patents
Multimedia-gatewayInfo
- Publication number
- EP1735991A1 EP1735991A1 EP05729765A EP05729765A EP1735991A1 EP 1735991 A1 EP1735991 A1 EP 1735991A1 EP 05729765 A EP05729765 A EP 05729765A EP 05729765 A EP05729765 A EP 05729765A EP 1735991 A1 EP1735991 A1 EP 1735991A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- function block
- ipv4
- protocol
- sip
- computer 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- Withdrawn
Links
Classifications
-
- 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
- H04L65/1033—Signalling gateways
- H04L65/104—Signalling gateways in the network
-
- 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
- H04L65/1023—Media gateways
- H04L65/103—Media gateways in the network
-
- 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
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
-
- 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
- H04L65/1101—Session protocols
- H04L65/1106—Call signalling protocols; H.323 and related
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/167—Adaptation for transition between two IP versions, e.g. between IPv4 and IPv6
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/169—Special adaptations of TCP, UDP or IP for interworking of IP based networks with other networks
Definitions
- the invention relates to a multimedia gateway for connecting incompatible computer networks.
- the Internet Protocol IP is responsible for the connectionless transport of data from a sender - possibly over several networks - to the recipient, whereby neither error detection nor error correction takes place.
- Transport protocols such as the Transmission Control Protocol TCP or User Datagram Protocol UDP are based on the Internet protocol, and in turn a hardly manageable variety of different, sometimes competing, ones.
- Application protocols such as http, FTP or the so-called SIP protocol for the management of multimedia connections.
- the gateways connected to the
- the invention has for its object to provide a gateway for multimedia communication.
- a multimedia gateway for connecting a first computer network to an incompatible second computer network with the following components: a first function block for setting up a multimedia data transmission with participants in the first computer network in accordance with the specific protocols of this network, user data and signaling data including performance features are buffered separately in the respectively assigned first signaling-specific state-sensitive stack memories, - a second function block for setting up a multimedia data transmission with subscribers of the second computer network in accordance with the specific protocols of this network, user data and signaling data including performance features being separated in respectively assigned second ones signaling-specific, state-sensitive stack memories are temporarily stored, and - a third function block for implementation ng of the signaling data including performance features and the user data between the first function block and the second function block.
- the gateway according to the invention is characterized by particularly high flexibility and versatile possible uses.
- the first computer network is based on the Internet protocol version 6 and the first function block supports this protocol
- the second computer network is based on the Internet protocol version 4 and the second function block uses this protocol and that the third function block uses the Implementation of the log data.
- the interworking functionality between iP networks version 4 and Version 6 IP networks can be implemented while maintaining the performance features.
- a particularly advantageous application is when the multimedia data transmission in the first computer network takes place according to the Session Initiation Protocol SIP and the first function block as SIP proxy supports this protocol and the second function block in the second computer network as a participant in a multimedia data transmission after H.323 standard is set up and that the third function block converts the signaling data according to the Session Initiation Protocol SIP and the line features contained into signaling data according to the H.323 standard, the performance features being implemented in accordance with the H.323 and H.450 standards.
- H.323 There are currently two competing signaling standards for multimedia connections on the Internet: H.323 and SIP.
- the ITU standard H.323 (ITU: international Telecommunications Union) was developed for the real-time transmission of multimedia applications such as voice and video communication in packet-oriented networks.
- As the so-called umbrella standard it houses a number of protocols, for example for signaling, exchange of terminal functionalities and status information as well as for connection and data flow control.
- the most important protocols of the H.323 standard include H.225, H.245 and H.450.x.
- H.225 describes signaling protocols such as RAS (Registration, Admission, Status) and Call Signaling.
- H.245 acts as a control protocol for multimedia communication.
- the H.450 standard defines additional telephony functions, for example to map the features from ISDN to IP.
- the Session Initiation Protocol SIP was developed by the IETF (Internet Engineering Task Force). The standard defines a signaling protocol for establishing, modifying and ending sessions with two or more participants.
- the Session Initiation Protocol SIP is also used to transmit real-time data over packet-based networks and is functionally comparable to the protocols according to ITU standard H.323:
- the Session Initiation Protocol SIP can provide interactive communication services including voice over IP
- the Session Initiation Protocol SIP is responsible for the call signaling as well as the localization and registration of users. In particular, however, it also enables the identity of the caller to be transmitted and call forwarding in iP networks.
- the Session Initiation Protocol SIP is text-based, based on HTTP (Hypertext Transfer Protocol) and thus offers an open internet-based structure. For this reason, new features can be implemented relatively easily and quickly.
- MGCP Media Gateway Controller protocol
- H.323 standard and the Session Initiation Protocol SIP can be used as the protocol for transmitting the MGCP control commands.
- the invention can also be used advantageously for converting protocol data according to the H.323 standard and also according to the Session Initiation Protocol SIP into MGCP control commands.
- a multimedia gateway in which the multimedia data transmission in the first computer network takes place according to the H.323 standard and the first function block as H.323 gatekeeper supports this protocol and the second function block in the second computer network as a subscriber one Multimedia data transmission is set up in accordance with the Media Gateway Controller protocol MGCP standard and in the third function block converts the signaling data in accordance with the H.323 / H.450 protocols and the line features contained in connection control data in accordance with the MGCP standard.
- a multimedia gateway in which the multimedia data transmission in the first computer network takes place according to the Session Initiation Protocol SIP and the first function block as SIP proxy supports this protocol and the second function block in the second computer network as a participant in a multimedia data transmission is set up according to the Media Gateway Controller protocol MGCP standard and in which the third function block converts the signaling data according to the Session Initiation Protocol SIP and the line features contained in connection control data according to the MGCP standard.
- the example shows the use of a gateway according to the invention during a transition from a first Internet domain, which uses Internet Protocol version 6 IPv6 and, inter alia, the Session Initiation Protocol SIP, to a second Internet domain, which uses Internet Protocol version 4 Ipv4 and the ITU- Standard H.323 builds.
- a call setup between a subscriber of the first domain and a subscriber of the second domain is shown.
- the term domain designates a strictly delimited addressable area of a computer network, which can be, for example, a so-called intranet or else the entire network of an operator.
- the call is now implemented by the multimedia gateway despite the different conditions in the two incompatible domains in such a way that the two Participants can also use the full range of services offered in both networks across network boundaries.
- a call is initiated according to the Session Initiation Protocol SIP with the INVITE request, which is routed to the gateway at a destination address in the second domain.
- the routing process is carried out in accordance with the Internet Protocol IP and the transport protocols, Transmission Control Protocol TCP or User Datagram Protocol UDP.
- the two domains have different versions of the Internet protocol - Internet Protocol Version 6 IPv6 or Internet Protocol Version 6 Ipv4 - with different addressing, so that an address transfer must take place in the gateway according to the invention.
- the data for the session initiation protocol SIP is separated from the data according to the real time protocol RTP.
- the RTP data stream is buffered in the first function block, the Inter protocol data is converted from version 6 to version 4, in particular the essential difference in addressing is overcome by network address translation.
- the first function block PHY 1; IPv6; Ipv ⁇ SIP; IPv6.RTP in the manner of a USER AGENT SERVER that completes the incoming call in accordance with the protocol, ie carries out the signaling handshake and user data (voice, video, multimedia content) in accordance with the protocol.
- the information required for this is temporarily stored in a signaling-specific, state-sensitive signaling stack.
- this information is used for proper dialogue with the calling subscriber from the first domain, on the other hand, the data is used to translate the signaling into the H.323 protocol using a third function block.
- the H.323 protocol data obtained in this way is sent to the second signaling-specific, state-sensitive signaling stack lpv4 H.323; of the second function block PHY: 2; IPv4; IPv4 H.323; IPv4.RTP pass and serve as the basis for the communication between the second function block and the called party of the second network.
- the signaling transformation according to the invention is also used to translate performance features.
- Performance features are functionalities of a terminal device which, for example, are intended to facilitate and simplify the operation of the terminal device or which are intended to expand the communication options.
- Examples of this include call forwarding, call waiting - three-party call number display - automatic callback
- such features are also translated, for example, from the Session Initiation Protocol SIP into the H.450 protocol provided for this purpose in the H.323 standard.
- This translation is carried out in an "intelligent" manner, ie it is provided that individual information which the transmitting standard does not supply in full is added automatically in the third function block ALG.
- these performance features are based on a 'gateway half'. closed and converted to the other 'gateway half', ie the signaling traffic with the first subscriber according to the Session Initiation Protocol SIP in the manner of a SIP subscriber has been properly completed and a call for the H. on the "outgoing side in the second domain" 323 or H.450 protocol built.
- the exemplary embodiment only describes a call from the first domain to the second domain. In an analogous manner, however, calls in the other direction, i.e. converted from a network with Internet Protocol Version 4 and H.323 standard to a network with Internet Protocol Version 6 and Session Initiation Protocol SIP.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Security & Cryptography (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (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 |
---|---|---|---|
EP05729765A EP1735991A1 (de) | 2004-03-11 | 2005-03-11 | Multimedia-gateway |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04005762A EP1575241A1 (de) | 2004-03-11 | 2004-03-11 | Multimedia-Gateway für IP Version 4 und IP Version 6 Netze |
EP05729765A EP1735991A1 (de) | 2004-03-11 | 2005-03-11 | Multimedia-gateway |
PCT/EP2005/051118 WO2005088940A1 (de) | 2004-03-11 | 2005-03-11 | Multimedia-gateway |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1735991A1 true EP1735991A1 (de) | 2006-12-27 |
Family
ID=34814294
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04005762A Withdrawn EP1575241A1 (de) | 2004-03-11 | 2004-03-11 | Multimedia-Gateway für IP Version 4 und IP Version 6 Netze |
EP05729765A Withdrawn EP1735991A1 (de) | 2004-03-11 | 2005-03-11 | Multimedia-gateway |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04005762A Withdrawn EP1575241A1 (de) | 2004-03-11 | 2004-03-11 | Multimedia-Gateway für IP Version 4 und IP Version 6 Netze |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP1575241A1 (de) |
CN (1) | CN1930852A (de) |
BR (1) | BRPI0508575A (de) |
WO (1) | WO2005088940A1 (de) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1143683A2 (de) * | 2000-04-03 | 2001-10-10 | Siemens Information and Communication Networks Inc. | Ausführung einer SIP-H.323-durchgangsvorrichtung zur Integration von SIP-agenten in ein H.323-system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6580717B1 (en) * | 1996-07-04 | 2003-06-17 | Hitachi, Ltd. | Packet communication method and apparatus and a recording medium storing a packet communication program |
AU2001238261A1 (en) * | 2000-02-14 | 2001-08-27 | Chicory Systems, Inc. | Predecoding instructions to determine stack change information |
AU2000262769A1 (en) * | 2000-07-21 | 2002-02-05 | Bertenyi, Balazs | Sip sessions between ipv4 and ipv6 clients and sip based call setup in 3gpp ip multimedia subsystem with nat in place |
US20020034963A1 (en) * | 2000-08-17 | 2002-03-21 | Paul Lansing | Intelligent communication gateway device |
-
2004
- 2004-03-11 EP EP04005762A patent/EP1575241A1/de not_active Withdrawn
-
2005
- 2005-03-11 CN CN200580007685.1A patent/CN1930852A/zh active Pending
- 2005-03-11 BR BRPI0508575-6A patent/BRPI0508575A/pt not_active Application Discontinuation
- 2005-03-11 EP EP05729765A patent/EP1735991A1/de not_active Withdrawn
- 2005-03-11 WO PCT/EP2005/051118 patent/WO2005088940A1/de not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1143683A2 (de) * | 2000-04-03 | 2001-10-10 | Siemens Information and Communication Networks Inc. | Ausführung einer SIP-H.323-durchgangsvorrichtung zur Integration von SIP-agenten in ein H.323-system |
Also Published As
Publication number | Publication date |
---|---|
WO2005088940A1 (de) | 2005-09-22 |
BRPI0508575A (pt) | 2007-08-14 |
CN1930852A (zh) | 2007-03-14 |
EP1575241A1 (de) | 2005-09-14 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB |
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17Q | First examination report despatched |
Effective date: 20070710 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
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RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS S.P.A. |
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RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SIEMENS NETWORKS GMBH & CO. KG |
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