WO2007065738A1 - Device and method for supporting fax t.38 applications in fmc networks - Google Patents

Device and method for supporting fax t.38 applications in fmc networks Download PDF

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Publication number
WO2007065738A1
WO2007065738A1 PCT/EP2006/065623 EP2006065623W WO2007065738A1 WO 2007065738 A1 WO2007065738 A1 WO 2007065738A1 EP 2006065623 W EP2006065623 W EP 2006065623W WO 2007065738 A1 WO2007065738 A1 WO 2007065738A1
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WO
WIPO (PCT)
Prior art keywords
date
characterized
fax
applications
sdp
Prior art date
Application number
PCT/EP2006/065623
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German (de)
French (fr)
Inventor
Klaus Hoffmann
Original Assignee
Nokia Siemens Networks Gmbh & Co. Kg
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
Priority to DE102005058003.3 priority Critical
Priority to DE102005058003 priority
Application filed by Nokia Siemens Networks Gmbh & Co. Kg filed Critical Nokia Siemens Networks Gmbh & Co. Kg
Publication of WO2007065738A1 publication Critical patent/WO2007065738A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1033Signalling gateways
    • H04L65/104Signalling gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/102Gateways
    • H04L65/1023Media gateways
    • H04L65/103Media gateways in the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1066Session control
    • H04L65/1083In-session procedures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/02Network-specific arrangements or communication protocols supporting networked applications involving the use of web-based technology, e.g. hyper text transfer protocol [HTTP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/04Network-specific arrangements or communication protocols supporting networked applications adapted for terminals or networks with limited resources or for terminal portability, e.g. wireless application protocol [WAP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/006Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00204Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
    • H04N1/00209Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax
    • H04N1/00214Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax details of transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00204Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
    • H04N1/00209Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax
    • H04N1/00214Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax details of transmission
    • H04N1/0022Transmitting or receiving image data, e.g. facsimile data, via a computer, e.g. using e-mail, a computer network, the internet, I-fax details of transmission involving facsimile protocols or a combination of facsimile protocols and computer data transmission protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H04N1/00307Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a mobile telephone apparatus
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00127Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
    • H04N1/00281Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
    • H04N1/00312Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a digital transmission apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, SMS or ISDN device
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/10Signalling, control or architecture
    • H04L65/1013Network architectures, gateways, control or user entities
    • H04L65/1016IMS
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2203/00Aspects of automatic or semi-automatic exchanges
    • H04M2203/10Aspects of automatic or semi-automatic exchanges related to the purpose or context of the telephonic communication
    • H04M2203/1091Fixed mobile conversion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2203/00Aspects of automatic or semi-automatic exchanges
    • H04M2203/65Aspects of automatic or semi-automatic exchanges related to applications where calls are combined with other types of communication
    • H04M2203/657Combination of voice and fax calls
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0008Connection or combination of a still picture apparatus with another apparatus
    • H04N2201/0015Control of image communication with the connected apparatus, e.g. signalling capability
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0008Connection or combination of a still picture apparatus with another apparatus
    • H04N2201/0015Control of image communication with the connected apparatus, e.g. signalling capability
    • H04N2201/0024Converting image communication control signals, e.g. group 3 facsimile protocol signals, to non-image communication control signals or vice versa
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/0077Types of the still picture apparatus
    • H04N2201/0091Digital copier; digital 'photocopier'

Abstract

According to prior art, T.38 fax applications are defined for fixed networks. There is no comparable definition for mobile networks. The problem is therefore that in mixed FMC networks (fixed mobile conversion, i.e. mixed mobile networks) with an interworking of all networked units, T.38 fax applications between the fixed network and a mobile subscriber are not supported. The invention is characterized in that the value range of the interface (Gq) of the subsystem (IM) is extended by the SDP date IMAGE , thereby making it possible to recognize a T.38 fax application when IMAGE is received, and IMAGE is handed over to the policy function PDF. The latter controls the bearer correspondingly, allowing both subscribers to communicate via T.38 fax.

Description

description

Apparatus and method for supporting fax T.38 applications in FMC networks.

provide for the separation of switching networks in service-related connection units and transporting the useful information (bearer control) recent communication architectures. This results in a decomposition / separation of connection setup and medium or bearer setup. The transfer of user information (switching through the data channel) can then be made using different high bit rate transport technologies such as ATM, IP or Frame Relay.

With such a separation, the presently conducted in narrowband networks telecommunications services are to be realized in broadband networks. The participants, either directly (eg, via a DSSL protocol) or a Media Gateway Controller (MGC) formed exchanges (eg., Via the ISUP protocol) to be connected. The payload itself be converted via Media Gateways (MG) into each of used transport technology.

The control of the media gateways are performed by respectively associated Media Gateway Controllers (MGC). To control the media gateways using Media Gateway Controller standardized protocols such. As the MGCP protocol or the H.248 protocol. To communicate with one another shall use the media gateway controller a standardized by the ITU BICC (Bearer Independent Call Control) protocol, which is formed of a plurality of standardized protocols and thus comprises a protocol family.

An adequate BICC protocol protocol is created at the IETF standardization body with the SIP protocol (RFC3261) or the additional SIP-T (RFC3204) / SIP-I. With the latter can ISUP messages - transfer - in contrast to the SIP protocol. The transfer of ISUP messages is generally carried out by tunneling, ie transparent hatches.

The connection between 2 or more SIP partici- pants are measured using SIP protocol elements. Here, among other things, SDP (Session Description Protocol) data are exchanged. SDP data (Bearer-) endpoint-related data, the information on the Endgerate or co- decs, IP port, IP address, etc. included. If a connection between a SIP subscriber and a H.323 or TDM / ISDN create participants, this SIP protocol elements must be set converted in the participating media gateway controllers in accordance with H.323, TDM or ISDN protocol elements ,

First grundsatzliche considerations have led within the ITU-T for Draft Recommendation Q.1912.5 "Interworking SIP and BICC / ISUP". This initial thoughts posted for the known from the ISDN world supplementary services have already been made. The same applies to the standardization body 3GPP for mobile participants where SIP based services are specified (TS 24229). in particular, an architecture is here in the IMS (IP multimedia subsystem) specified and standardized, as shown in FIG. 2.

Basically Q.1912.5 Recommendation specifies the conditions as they arise between SIP and PSTN subscribers in the ITU-T. Here, no difference is made between see wired and mobile subscribers made. For FMC networks (fixed mobile conversion, ie mixed mobile fixed networks) are, however, not mobile subscribers used. So it will come to an interworking of all networked together in such units FMC networks with different units, such as clients and network transition units (MGCF, MGC etc.).

The ITU-T Recommendation Q1912.5 supports T.38 fax applications. With the increasing spread of SIP clients that can run on PDAs / Mobile 's that are applicable in the context of 3GPP, the need arises to FAX service using T.38 (ITU-T recommendation T.38) by feeders.

However, this service is not possible in the 3GPP as the IMS architecture supports T.38 FAX not applications. According to the 3GPP Recommendation TS29.209 V6.2.0 (2005-03) "3rd Generation Partnership Project; Technical Specification Group Core Network; Policy control over Gq interface (Release 6) "are described in Section 6.5.21 only for the SDP data" AUDIO (O) "," VIDEO (I) "," DATA (2), "" APPLICATION (3) ", and "CONTROL (4)" allowed. For T.38 applications the SDP date "IMAGE" is in the media line (m-line) field of the SDP protocol used. The required determination is made from the IETF recommendation RFC 3362, "G. .. Parsons, "Realtime Facsimile (T.38) - image_t38 MIME Sub-type Registration", August 2002. "and detailing in Rec T.38 / V152 Below is a corresponding media Line Feld shown by way of example SDP protocol:

v = 0 o = faxgwl 2890844526 2890842807 IN IP4 128.59.19.68 e=+l-212-555-1234@bell-tel.com t = 2873397496 0 C = IN I P4 128th 59th 19th 68 m = image 49170 UDPTL t38 a = T38FaxRateManagement: transf erredTCF a = T38FaxUdpEC: t38UDPFEC m = image 49172 tcp a = t38 T38FaxRateManagement t localTCF

In the device P-CSCF of the IMS architecture (Fig. 2) the SDP data is abgegri f fen, and via the Gq interface, the PDF function (Pol icy Deci s ion Function) supplied. From this it is then decided whether the bearer to Mas sgabe existing SDP-specific data Zvi both Endgeraten fre can be igegeben. Since the device the P-CSCF for a T. 38 Endgerat representative SDP date "IMAGE" or knows not obtained, this facility will face over the assigned Gq Inter- consequently the Baerer not according Adjustab ¬ len. Since the SDP data is currently only tapped in the exchange between the two Endgeraten, these unchanged exchanged via SIP signaling between the Endgeraten, the SIP signaling thus noticed no problems and possibly starts Vergebuhrung. Since the PDF function has not released the bearer, the user can make any T.38 FAX transmission, but vergebuhrt.

The object of the invention is based, show a way how T.38 FAX applications can be realized in FMC networks.

The invention is solved on the basis of the specified in the preambles of claim 1 and 5 by the features claimed in the characterizing parts of features.

The advantage of the invention is the fact that the range of the interface Gq Subsystem IMS to the SDP date "IMAGE" will be extended. This T.38 Fax is recognized application and "IMAGE" upon the arrival of "IMAGE" is the policy function (PDF) will be given. This then controls the bearer in a corresponding manner, both parties can use it to communicate via T.38 fax. the important feature FAX Cail with T.38, which the user previously in normal Next generation (IP network) knows telephone network, is now being offered in hybrid SIP fixed networks.

The invention is explained in more detail by way of figurlich presented ones shown, exemplary embodiment.

Show it:

1 shows the principle of union conditions between PSTN and / or mobile subscribers, between which a

Internet network is arranged,

2, the concrete form of a FMC network, Figure 3, the IM subsystem ACCORDANCE standard TS24.229, Fig. 1 shows the principle of union conditions between PSTN and / or mobile subscribers, between which an Internet network is arranged. Here are of- fenbart in each of a plurality of PSTN subscribers are connected in a known manner by way of example 2 PSTN networks. These are introduced to local exchanges LE, which in turn are connected to transit exchanges TX.

In the transit exchanges TX, the separation between signaling information and payload information will now be performed. The signaling information is supplied directly via an ISUP protocol with a respective associated media gateway controller MGC from the transit exchange TX (MGC A or MGC B). The useful information is transmitted to an (input-side) media gateway MG (MG MG A or B), which acts as an interface between the TDM network and an ATM or IP transmission network and packet-transmission network via the relevant advantage transmitted. The media gateway MG A is controlled by the media gateway controller MGC A as well as the media gateway MG by the media gateway controller MGC B B. In the case of transmission of the payload information by the media gateway MG to the media gateway MG A B the payload are again are control of the media gateway MG B assigned to the media gateway controller MGC B converted into a TDM data stream and supplied to the candidate PSTN subscriber. The data transmitted between the media gateway controller MGC and the respectively associated Media Gateway data are supported by a standardized protocol. This example, the MGCP or the H.248 protocol can be. Between the two media gateway controllers A MGC, MGC B preferably ACCORDANCE present exemplary embodiment is used, the SIP protocol. Finally, a subsystem IMS is introduced with facilities P-CSCF, PDF at the media gateway CONT roller MGC B, via the mobile subscriber with z. B. are connectable to PSTN subscribers. Basically, already is in the indicated in Fig. 1 configuration to a FMC network in its simplest form.

Fig. 2 shows an FMC network having a plurality of structures. Demgemass a plurality of meshed networks is removable. To this end, pay mobile (GPRS, UMTS) and fixed (xDSL, LAN) subscriber access networks as well as wireless local access networks (WLAN). As a transition point, respectively networks IM subsystems IMS or domains are arranged.

Fig. 3 shows the definition and role of the IMS system overall mass 3GPP TS 23.002 V6.5.0 (2004-06) standard. Here is a BGCF (breakout gateway control function) functionality described. Further facilities CSCF, P-CSCF and other institutions have been showing their interaction is also discussed in the above standard. For example, the BGCF function (Breakout Gateway Control Function) is selected the network (domain, z. B. PSTN) to which the outgoing call from a SIP Endgerat UE should be directed. When the BGCF determines function that the target is located in its own network, ie, in the network in which the function is arranged BGCF, MGCF selects the BGCF a function of functionality, which is responsible for the interworking with the PSTN network. If the destination is on a different network, the BGCF functional enough signaling further into the other network.

Finally, the device can be P-CSCF entommen Fig. 3, which acts as a control of the interface Gq. Here is a function PDF (Policy Description Function) is stored, which sets the rules in the net. Replace example 2 Endgerate SDP data, they will be picked up by the device P-CSCF and fed to the function PDF. Is determined by the latter that the predetermined rules are violated, the bearer is not released and both participants can not go as planned communicate.

It is now proposed to extend the interface Gq in their functionality: In a first embodiment is provided to expand the interface Gq to the SDP date "IMAGE" Furthermore, is the SDP date "IMAGE" in the function PDF of the device P. -CSCF to integrate. The tapped SDP data have, for example, the Media Line Feld following structure:

"AUDIO (O)", "VIDEO (I)", "DATA (2)," "APPLICATION (3)", "CONTROL (4)", "IMAGE (5)"

Since the range of the interface Gq to the SDP date "IMAGE" has been extended, blocking does not occur upon arrival of this SDP date "IMAGE" The PDF function can determine then whether the prescribed rules - in which the SDP date "IMAGE" now einegbunden. is - are injured, and gives the bearer free. Both parties can then, as planned communicate via fax T.38

the device P-CSCF and the function PDF are fed - in a second configuration is provided that basically all SDP data are tapped and transparently - without Filterfunkition that could repel date unknown SDP.

Claims

claims
1. A method for supporting services in FMC systems which are formed from at least one fixed network part and at least one, a subsystem (IMS) comprising fraction, and in which endpoint specific bearer related data are exchanged between subscribers, wherein at least one of the data indicative of is the service in question, characterized in that the value range of the interface (Gq) of the subsystem (IMS), a date is extended by the characteristic of the service concerned, at least, whereby said at arrival of a policy function (PDF) will be given.
2. The method according to claim 1, characterized in that the service includes T.38 fax applications.
3. The method according to claim 2, characterized in that which is characteristic of T.38 fax applications out at least one date in the media line field of the SDP protocol.
4. The device according to claim 1 to 3, characterized in that the characteristic of T.38 applications date is the date SDP "IMAGE".
5. An apparatus for supporting services in FMC systems which are formed from at least one fixed network part and at least one, a subsystem (IMS) comprising fraction, and in which endpoint specific bearer related data are exchanged between subscribers, wherein at least one of the data indicative of is the service in question, characterized in that the value range of the interface (Gq) of the subsystem (IMS) igstens a date is extended by the characteristic of the service concerned Wen, whereby upon arrival of this a policy function (PDF) will be given.
6. Apparatus according to claim 5, characterized in that the service includes T.38 fax applications.
7. Apparatus according to claim 5, 6, characterized in that the media line field of the SDP protocol, the characteristic of T.38 fax applications leads at least one date.
8. Device according to one of claims 5 to 6, characterized in that the characteristic of T.38 applications date is the date SDP "IMAGE".
9. Device according to one of claims 5 to 8, characterized in that the policy function (PDF) is in operative connection with the bearer.
PCT/EP2006/065623 2005-12-05 2006-08-24 Device and method for supporting fax t.38 applications in fmc networks WO2007065738A1 (en)

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DE102005058003 2005-12-05

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WO2010091562A1 (en) * 2009-02-13 2010-08-19 上海贝尔股份有限公司 Method and apparatus for interaction between fixed network and third party network or application server

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US20010033642A1 (en) * 2000-02-11 2001-10-25 Lsi Logic Corporation Method and system for optimized facsimile transmission speed over a bandwidth limited network
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Publication number Priority date Publication date Assignee Title
WO2010091562A1 (en) * 2009-02-13 2010-08-19 上海贝尔股份有限公司 Method and apparatus for interaction between fixed network and third party network or application server
CN102160356A (en) * 2009-02-13 2011-08-17 上海贝尔股份有限公司 Method and apparatus for interaction between fixed network and third party network or application server

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