EP1813077A1 - Verfahren zum aufbau einer mulitmedia-verbindung - Google Patents
Verfahren zum aufbau einer mulitmedia-verbindungInfo
- Publication number
- EP1813077A1 EP1813077A1 EP05789678A EP05789678A EP1813077A1 EP 1813077 A1 EP1813077 A1 EP 1813077A1 EP 05789678 A EP05789678 A EP 05789678A EP 05789678 A EP05789678 A EP 05789678A EP 1813077 A1 EP1813077 A1 EP 1813077A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bicc
- signaling
- sip
- connection
- multimedia connection
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000008094 contradictory effect Effects 0.000 claims abstract description 7
- 101150090871 APM3 gene Proteins 0.000 claims abstract description 3
- 230000011664 signaling Effects 0.000 claims description 25
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 2
- 101150112998 ADIPOQ gene Proteins 0.000 abstract 2
- 101150096655 APM1 gene Proteins 0.000 abstract 2
- 101100162826 Dictyostelium discoideum apm2 gene Proteins 0.000 abstract 2
- 101100053794 Homo sapiens ZBTB7C gene Proteins 0.000 abstract 2
- 102100023250 Zinc finger and BTB domain-containing protein 7C Human genes 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 description 8
- 230000000977 initiatory effect Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000005352 clarification Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004807 localization 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
-
- 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
-
- 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
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
- H04L65/765—Media network packet handling intermediate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
Definitions
- the invention relates to a method for setting up a multimedia connection
- the Internet Protocol IP is responsible for the connectionless transport of data from one sender - possibly over several networks - to the receiver at level 3 of the OSI layer model, whereby neither error detection nor error correction takes place.
- Transport Protocols such as the Transmission Control Protocol TCP or User Datagram Protocol UDP are set up on the Internet Protocol, and in turn a scarcely manageable variety of different, in some cases competing, application protocols, such as, for example, http, ftp or for the management of multimedia connections the so-called SIP protocol or the ITU standard H.323.
- H.323 For multimedia connections on the Internet there are currently two competing standards for signaling: H.323 and SIP.
- the ITU standard H.323 (ITU: International Telecommunication Union) was developed for the real-time transmission of multimedia applications such as voice and video communication in packet-oriented networks.
- Umbrella As the so-called Umbrella standard, it houses a series of protocols, such as signaling, exchange of terminal functionalities and status information as well as 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 Control Protocol for Multimedia Communication.
- the H.450 standard defines additional telephony functions in order, for example, to map the features of ISDN to IP.
- the ITU-T standard Q.1902.XBICC CS2 (bearer independent call control capability set 2 ) and Q.765.5 BAT (bearer application transport) specify in parallel and alternatively also how known services can be realized.
- the Session Initiation Protocol SIP was developed by the IETF (Internet Engineering Task Force). The standard defines a signaling protocol for setting up, modifying, and terminating sessions with two or more participants.
- the session initiation protocol SIP likewise serves for the transmission of real-time data via packet-based networks and is functionally comparable to the protocols according to ITU standard H.323:
- the session initiation protocol SIP can mediate interac ⁇ tive communication services including voice over IP networks , the transport works via TCP (Transmission Control Protocol) or UDP (User Datagram Protocol).
- TCP Transmission Control Protocol
- UDP User Datagram Protocol
- the Session Initiation Protocol SIP is responsible for the call signaling as well as the localization and registration of users. In particular, it also allows the transmission of the identity of the caller and the call forwarding in IP networks.
- Session Initiation Protocol SIP is text-oriented, based on HTTP (Hypertext Transfer Protocol) and thus offers an open internet-based structure. For this reason, new performance characteristics can be implemented relatively easily and quickly.
- HTTP Hypertext Transfer Protocol
- the two aforementioned standards are constantly being developed. Examples are more recently Q.1912.5 "Interworking SIP and BICC / ISUP" for ITU-T and RFC 3366 "SIP Basic call flow examples" for IETF.
- the invention is therefore based on the object to further develop multimedia connections to the standards mentioned.
- This object is achieved according to the invention by a method for establishing a multimedia connection via packet-switching computer networks between at least one calling subscriber and at least one called subscriber, in which, in the event of contradictory requests from calling and called subscriber to one another, the subscribers of Independently know each other of these contradictory requirements and then send a request to the respective call partner for the delayed execution of the corresponding task.
- the invention can be used particularly advantageously if the two subscribers belong to areas with different signaling protocols.
- the signaling messages for establishing a connection are routed via interworking points, which carry out a translation of the signaling prompts between the protocols.
- Al multimedia connection is in principle any type of information transfer conceivable. However, the transmission of voice, fax or data transmission via modem certainly has special significance.
- a call setup is shown in excerpts between a calling subscriber SIP who, according to the embodiment, has an ISDN connection and wishes to set up a call connection to a further subscriber SIP.
- the ISDN device of the caller RT uses ISDN User Part (ISUP) signaling.
- ISUP ISDN User Part
- the ISDN User Part is one of several possible user parts (UP) of the SS7 signaling. It is the ISDN-specific share in the transmission of additional information via the signaling channel between switching centers and the prerequisite for a complete ISDN range of services also in international traffic.
- the called party SIP is a device connected to a computer network.
- This Network are the already mentioned in the introduction introduction Bearer Independent Call Control (BICC) and the Session Initiation Protocol SIP used as signaling protocols.
- BICC Bearer Independent Call Control
- SIP Session Initiation Protocol
- IWP interworking unit
- so-called out-band signaling i.
- the traffic channel and signaling are routed via separate paths.
- the ITU-T standard Q.1902.X BICC CS2 (bearer independent call control capability set 2) and Q.765.5 BAT (bearer application transport) were used to determine how known services can be implemented.
- Call forwarding calls are forwarded immediately to any but reachable telephone connection, but the user channels leading to the subscriber should remain free, ie the user channel should not be routed via the device on which call forwarding "has been activated.
- the "CALL Transfer” feature makes it possible to pass on a call to a third party; in this case too, the payload channels leading to the device of the leaving subscriber should no longer be charged after the handover of the call. Both features now require a re-routing of the user channel via a direct path between the newly added participants.
- BICC APM Generic procedure for the support of ISDN supplementary services and bearer redirection
- UPDATE SDP session description protocol
- RFC23257 offer according to IETF RFC 3311 / RFC3264 signaling that the traffic channel should now be routed to the new subscriber. Since the two participants use different protocols, the signaling is translated by interworking unit IWP.
- this problem is solved in that each of the two subscribers sends to the respective call partner a request BICC APM3, 500 (retry after) for the delayed execution of the reversal of the user channel.
- the exemplary embodiment describes the case of a meeting of the features "CALL Transfer”"CALLForwarding". In this case grouping, the advantages of the invention appear particularly evident.
- the method according to the invention can be used in the same or almost the same way in all those cases in which conflicting requirements in protocol interworking during connection setup and connection control in packet-switched networks lead to a need for clarification.
- the invention is not limited to individual signaling protocols, interworking constellations or individual services.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Business, Economics & Management (AREA)
- General Business, Economics & Management (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004047025A DE102004047025B3 (de) | 2004-09-28 | 2004-09-28 | Verfahren zum Aufbau einer Multimedia-Verbindung |
PCT/EP2005/054892 WO2006035050A1 (de) | 2004-09-28 | 2005-09-28 | Verfahren zum aufbau einer mulitmedia-verbindung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1813077A1 true EP1813077A1 (de) | 2007-08-01 |
Family
ID=35583466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05789678A Withdrawn EP1813077A1 (de) | 2004-09-28 | 2005-09-28 | Verfahren zum aufbau einer mulitmedia-verbindung |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080098116A1 (de) |
EP (1) | EP1813077A1 (de) |
DE (1) | DE102004047025B3 (de) |
WO (1) | WO2006035050A1 (de) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030227908A1 (en) * | 2000-05-04 | 2003-12-11 | Scoggins Shwu-Yan Chang | Method and apparatus for negotiating bearer control parameters using property sets |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI104674B (fi) * | 1997-11-24 | 2000-04-14 | Nokia Networks Oy | Datakompression neuvottelu tietoliikennejärjestelmässä |
EP1093281A3 (de) * | 1999-10-15 | 2002-11-06 | Nortel Networks Limited | Anrufweiterleitung durch portables Gerät |
US7092385B2 (en) * | 2002-03-12 | 2006-08-15 | Mci, Llc | Policy control and billing support for call transfer in a session initiation protocol (SIP) network |
-
2004
- 2004-09-28 DE DE102004047025A patent/DE102004047025B3/de not_active Expired - Fee Related
-
2005
- 2005-09-28 EP EP05789678A patent/EP1813077A1/de not_active Withdrawn
- 2005-09-28 US US11/661,815 patent/US20080098116A1/en not_active Abandoned
- 2005-09-28 WO PCT/EP2005/054892 patent/WO2006035050A1/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030227908A1 (en) * | 2000-05-04 | 2003-12-11 | Scoggins Shwu-Yan Chang | Method and apparatus for negotiating bearer control parameters using property sets |
Also Published As
Publication number | Publication date |
---|---|
WO2006035050A1 (de) | 2006-04-06 |
DE102004047025B3 (de) | 2006-04-13 |
US20080098116A1 (en) | 2008-04-24 |
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Legal Events
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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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17P | Request for examination filed |
Effective date: 20070111 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
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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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DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: NOKIA SOLUTIONS AND NETWORKS GMBH & CO. KG |
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17Q | First examination report despatched |
Effective date: 20150218 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20150630 |