CN101262706B - Realization method for voice switch to fax service - Google Patents
Realization method for voice switch to fax service Download PDFInfo
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- CN101262706B CN101262706B CN2008100934608A CN200810093460A CN101262706B CN 101262706 B CN101262706 B CN 101262706B CN 2008100934608 A CN2008100934608 A CN 2008100934608A CN 200810093460 A CN200810093460 A CN 200810093460A CN 101262706 B CN101262706 B CN 101262706B
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Abstract
The invention relates to a realization method of a voice changing to fax service. An interoffice protocol connected with a relay is extended to add messages of indicating voice changing to fax. After either of a calling party and a called party in a normal communication status issues a service handover request as a fax receiving end, the method comprises the following steps: (a) after an emulated MSCE of a mobile switching center of the fax receiving end discovers that the voice changing to fax service, the resource processing of establishing interworking function IWF is processed; (b) the fax receiving end MSCE sends messages to a fax transmitting end to indicate the occurrence of voice changing to fax; (c) after the fax transmitting MSCE receives the messages, the resource processing of establishing IWF is processed and a medium face IWF then has a negotiation so as to send the fax. The method of the invention can increase the success rate of voice changing to fax in an interoffice relay connection.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to the method that realizes service converting voice to fax at mobile communications network.
Background technology
Mobile communications network is realized and PSTN (Public Switched Telephone Network) the similar traditional circuit type data service of network through IWF (Inter working Function, network interworking function) equipment.IWF be one between mobile communications network and PSTN network, the equipment of IWF is provided.It utilizes portable terminal MT2, and (MT2 is the special use abbreviation of Mobile Termination 2; Expression portable terminal 2 type equipment; The terminal that promptly has the circuit type data-transformation facility; The said portable terminal of this paper all refers to the type terminal, below no longer specifies) come together to the user provides and wired MODEM identical functions with MODEM on the IWF, with the realization circuit data service.
At present, it is to be introduced into the mode that voice carry out facsimile service again that the user is widely used, and promptly user both sides are introduced into voice call, and then send a fax, and is called for short " voice change fax ".
Fig. 1 is the application network illustraton of model that voice change fax, comprising: base station, mobile switching center emulation and WMG, below with media gateway MGW network interworking function IWF to be provided be that example describes.
When interoffice is SIP (Session Initiation Protocol) connection; As shown in Figure 2; Fax receiving terminal portable terminal is initiated professional handoff request through eating dishes without rice or wine, BSC (Base Station Controller, base station controller) receives this request back notice MSCE2; MSCE2 (Mobile Switching CenterEmulation 2; Mobile switching center emulation) finds to do service converting voice to fax (voice have taken place BSC notice MSCE is changeed fax), just notify MGW2 (Media GateWay 2, WMG) to do the processing such as IWF resource of setting up receiving terminal media gateway MGW 2; And send the reINVITE request message and give the MSCE1 of opposite end office, service converting voice to fax has taken place in notice MSCE1; MSCE1 receives and judges after this message service converting voice to fax has taken place, the processing such as IWF resource of the media gateway MGW of just notifying MGW1 to do to set up transmitting terminal 1; Then, begin to hold consultation between the medium face IWF of reception and transmitting terminal and between IWF and the portable terminal.
When interoffice is the relaying connection; The IS707a.7 agreement is changeed fax for the voice between PSTN Fax and the travelling carriage MT2 and has been done detailed description; According to current agreement, as shown in Figure 3, get into after the conversation state; MSCE2 finds to do service converting voice to fax, MGW2 is done set up the IWF resource, sends V.21 processing such as signal tone; MGW1 detect the medium face V.21 signal tone report MSCE1, MSCE1 does processing such as setting up the IWF resource to MGW1 again; Then, begin to hold consultation between the medium face IWF of reception and transmitting terminal and between IWF and the portable terminal.
Detect the V.21 method of signal tone; Can realize that in theory the voice when interoffice junction connects change fax; But owing to put V.21 that just there is the regular hour in signal tone itself, and have flase drop or an inspection wait problem slowly, it is not high to tend to cause voice to change fax success rate.
Summary of the invention
The technical problem that the present invention will solve provides a kind of implementation method of service converting voice to fax, the success rate that the voice when connecting to improve interoffice junction change fax.
In order to address the above problem; The invention provides a kind of implementation method of service converting voice to fax; The interoffice agreement that expands the relaying connection is to increase the message that the indication voice change fax; After a side in the calling and called of normal talking state initiated professional handoff request as the fax receiving terminal, this method may further comprise the steps:
(a) after fax receiving terminal mobile switching center emulation MSCE finds service converting voice to fax, set up network interworking function IWF resource and handle;
(b) fax receiving terminal MSCE sends message to facsimile transmission end MSCE, and voice have taken place in indication changes fax;
(c) after facsimile transmission end MSCE receives this message, set up the IWF resource and handle, medium face IWF holds consultation, to accomplish the transmission of fax.
Further, the message of said indication generation voice commentaries on classics fax is to realize through the existing field that expands in the existing message of ISDN User Part or Telephone User Part.
Further, the message of said indication generation voice commentaries on classics fax realizes through new field in ISDN User Part or the existing message of Telephone User Part.
Further, the message of said indication generation voice commentaries on classics fax realizes through newly-increased message in ISDN User Part or Telephone User Part.
Further, fax receiving terminal MSCE directly is connected by relaying with fax transmitting terminal MSCE.
Further, send end office (EO) and be connected through tandem exchange with reception end office (EO), and all be to adopt interoffice junction to connect, step (b) may further comprise the steps:
(b11) fax receiving terminal MSCE sends message to the MSCE of tandem exchange, and the indication voice change fax;
(b12) MSCE of tandem exchange sends message to facsimile transmission end MSCE, and the indication voice change fax.
Further, send end office (EO) and be connected through tandem exchange with reception end office (EO), and send end office (EO) and adopt SIP to be connected with tandem exchange, receive end office (EO) and adopt interoffice junction to be connected with tandem exchange, step (b) may further comprise the steps:
(b21) fax receiving terminal MSCE sends message and gives the MSCE of tandem exchange, and the indication voice change fax;
(b22) voice have taken place the MSCE of tandem exchange changes fax, judges with facsimile transmission end MSCE to be that SIP is connected, and then sends the reINVITE request message to facsimile transmission end MSCE, and voice take place in indication changes fax;
(b23) facsimile transmission end MSCE sends the 200OK response message for the MSCE of tandem exchange;
(b24) MSCE of tandem exchange sends the ACK acknowledge message to facsimile transmission end MSCE.
Further, send end office (EO) and be connected through tandem exchange with reception end office (EO), and send end office (EO) and adopt interoffice junction to be connected with tandem exchange, receive end office (EO) and adopt SIP to be connected with tandem exchange, then step (b) may further comprise the steps:
(b31) fax receiving terminal MSCE judges with the MSCE of tandem exchange to be that SIP is connected, and then sends the reINVITE request message and gives the MSCE of tandem exchange, and voice take place in indication changes fax;
(b32) MSCE of tandem exchange sends the 200OK response message for fax receiving terminal MSCE;
(b33) fax receiving terminal MSCE sends the ACK acknowledge message for the MSCE of tandem exchange;
(b34) voice have taken place the MSCE of tandem exchange changes fax, and is that relaying is connected with facsimile transmission end MSCE, then continues to send message to facsimile transmission end MSCE, and voice have taken place notice changes and fax;
Further, network interworking function IWF is provided by WMG or base station controller.
Compared to prior art; The inventive method is changeed the mode of the message of fax through the interoffice agreement that expands the relaying connection to increase the indication voice; Making relaying connection networking carry out voice changes when faxing, and can not rely on the V.21 detection of signal, and after the receiving terminal of fax is found voice commentaries on classics fax; Can set up the IWF resource at the transmitting terminal of fax fast, thereby improve the success rate that voice change fax.
Description of drawings
Fig. 1 is the network model figure that service converting voice to fax is used.
Fig. 2 is that voice change the flow chart that the fax interoffice adopts SIP (Session Initiation Protocol) agreement in the prior art.
Fig. 3 is that voice change the flow chart that the fax interoffice junction connects in the prior art.
Fig. 4 is the flow chart of service converting voice to fax applying examples one of the present invention.
Fig. 5 is the flow chart of service converting voice to fax applying examples two of the present invention.
Fig. 6 is the flow chart of service converting voice to fax applying examples three of the present invention.
Fig. 7 is the flow chart of service converting voice to fax applying examples four of the present invention.
Embodiment
The Fast implementation that voice change fax when the invention provides the interoffice junction connection; The interoffice agreement that expands the relaying connection is to increase the message that the indication voice change fax; After fax receiving terminal mobile switching center emulation MSCE finds service converting voice to fax; Forwards the MSCE of office sends message, and voice have taken place in indication changes fax; If receiving the MSCE of this message is facsimile transmission end MSCE, then directly set up the IWF resource of facsimile transmission side, if the MSCE of tandem exchange then continues this message of forward pass, thereby set up the IWF resource at the transmit leg of fax fast, to accomplish the transmission of fax.
The message that voice commentaries on classics fax takes place in indication can realize through following three kinds of methods:
(1) expand the existing field that has in the message, such as: when interoffice uses ISDN User Part, expand Transmission medium used parameter or Event information parameter in the CPG message, or the parameter in the Connect message.
(2) new field in existing message, such as: when interoffice used ISDN User Part, newly-increased Voice To Fax parametric representation voice changeed fax in CPG message.
(3) newly-increased message, such as: when interoffice uses ISDN User Part, a newly-increased VoiceToFax by name or Service Change message.
Can certainly realize through the message that expands in the Telephone User Part.
The present invention solve emphatically travelling carriage MT2 to travelling carriage MT2 call out, interoffice junction connect time the service converting voice to fax model.
The present invention is an example with the first method, and example is following:
Transmission mediumused parameter in CPG (Call progress) message of expansion ISDN User Part.
Definition in the current agreement of this parameter:
0?0?0?0?0?0?0?0 speech
0?0?0?0?0?0?0?1 spare
0?0?0?0?0?0?1?0 reserved?for?64?kbit/s?unrestricted
0?0?0?0?0?0?1?1 3.1kHz?audio
0?0?0?0?0?1?0?0 reserved?for?alternate?speech(service?2)/64?kbit/s?unrestricted(service?1)
0?0?0?0?0?1?0?1 reserved?for?alternate?64?kbit/s?unrestricted(service?1)/speech(service?2)
0?0?0?0?0?1?1?0 reserved?for?64?kbit/s?preferred
0?0?0?0?0?1?1?1 reserved?for?2×64?kbit/s?unrestricted
0?0?0?0?1?0?0?0 reserved?for?384?kbit/s?unrestricted
0?0?0?0?1?0?0?1 reserved?for?1536?kbit/s?unrestricted
0?0?0?0?1?0?1?0 reserved?for?1920?kbit/s?unrestricted
0?0?0?1?0?0?1?1 spare
0?0?1?0?0?1?0?1 spare
The message that indication voice among the present invention change fax realizes through this parameter that expands:
The value implication
00010001 voice change fax
In the voice call attitude; The receiving terminal of fax finds that voice change fax; And with the interoffice agreement of the place ahead office (on promptly receiving end office (EO) and sending the direction that end office (EO) is connected, and near the exchange that receives end office (EO)) is ISUP, then sends this CPG message to the place ahead office; Wherein the value of parameter Transmission medium used is 00010001, and voice have taken place in indication changes fax; Receive the office of this message; Judge that parameter Transmission medium used is 0x11, know that voice have taken place changes fax, if local exchange is for sending end office (EO); Then directly set up the IWF resource of facsimile transmission side; If local exchange is tandem exchange's (being the exchange of non-end office (EO)), then continues voice commentaries on classics fax to take place, thereby set up the IWF resource at the transmit leg of fax fast to the transmitting terminal notice of fax.
Below in conjunction with four kinds of concrete networking structures, after the interoffice agreement expansion to the relaying connection, the process of using the implementation method of service converting voice to fax of the present invention describes.
Applying examples 1
As shown in Figure 4; Fax receives end office (EO) and directly is connected through relaying with facsimile transmission end office (EO); Wherein MSCE1 is the transmitting terminal mobile switching center emulation, and MSCE2 is the receiving terminal mobile switching center emulation, and the present invention realizes that the method for service converting voice to fax may further comprise the steps:
Step 401: calling and called (said fax receiving terminal and facsimile transmission end promptly) get into the voice call attitude, and conversation is normal;
Step 402: fax receiving terminal portable terminal is initiated professional handoff request through eating dishes without rice or wine, and MSCE2 finds that voice change fax, do processing such as setting up the IWF resource;
Step 403:MSCE2 sends message and gives MSCE1, and the indication voice change fax;
Step 404:MSCE1 judges that voice have taken place changes fax, then does processing such as setting up the IWF resource;
Step 405: medium face IWF begins to hold consultation, to accomplish the transmission of fax.
Applying examples 2
As shown in Figure 5; Sending end office (EO) is connected through tandem exchange with reception end office (EO); And all be to adopt interoffice junction to connect, wherein MSCE1 is the transmitting terminal mobile switching center emulation, and MSCE2 is tandem exchange's mobile switching center emulation; MSCE3 is the receiving terminal mobile switching center emulation, and then the implementation method of service converting voice to fax may further comprise the steps:
Step 501: calling and called are introduced into the voice call attitude, and conversation is normal
Step 502: fax receiving terminal portable terminal is initiated professional handoff request through eating dishes without rice or wine, and MSCE3 finds that voice change fax, do processing such as setting up the IWF resource;
Step 503:MSCE3 sends message and gives MSCE2, and the indication voice change fax;
Voice have taken place step 504:MSCE2 changes fax, judges with MSCE1 to be that relaying is connected, and then voice have taken place continuation transmission message informing MSCE1 is changeed fax;
Step 505:MSCE1 judges that voice have taken place changes fax, does processing such as setting up the IWF resource;
Step 506: medium face IWF begins to hold consultation, and accomplishes the transmission of fax.
Applying examples 3
As shown in Figure 6, send end office (EO) and be connected through tandem exchange, and send end office (EO) and adopt SIP to be connected with tandem exchange with reception end office (EO); Receiving end office (EO) adopts interoffice junction to be connected with tandem exchange; Wherein, MSCE1 is the transmitting terminal mobile switching center emulation, and MSCE2 is tandem exchange's mobile switching center emulation; MSCE3 is the receiving terminal mobile switching center emulation, and the implementation method of service converting voice to fax may further comprise the steps:
Step 601: calling and called are introduced into the voice call attitude, and conversation is normal;
Step 602: fax receiving terminal portable terminal is initiated professional handoff request through eating dishes without rice or wine, and MSCE3 finds that voice change fax, do processing such as setting up the IWF resource;
Step 603:MSCE3 sends message and gives MSCE2, and the indication voice change fax;
Voice have taken place step 604:MSCE2 changes fax, judges with MSCE1 to be that SIP is connected, and then sends the reINVITE request message and gives MSCE1, and voice take place in indication changes fax;
Step 605:MSCE1 sends the 200OK response message to MSCE2;
Step 606:MSCE2 sends the ACK acknowledge message to MSCE1;
Step 607:MSCE1 judges that voice have taken place changes fax, does processing such as setting up the IWF resource;
Step 608: medium face IWF begins to hold consultation, and accomplishes the transmission of fax.
Applying examples 4
As shown in Figure 7, send end office (EO) and be connected through tandem exchange, and send end office (EO) and adopt interoffice junction to be connected with tandem exchange with reception end office (EO); Receiving end office (EO) adopts SIP to be connected with tandem exchange; Wherein, MSCE1 is the transmitting terminal mobile switching center emulation, and MSCE2 is tandem exchange's mobile switching center emulation; MSCE3 is the receiving terminal mobile switching center emulation, and the implementation method of service converting voice to fax may further comprise the steps:
Step 701: calling and called are introduced into the voice call attitude, and conversation is normal
Step 702: fax receiving terminal portable terminal is initiated professional handoff request through eating dishes without rice or wine, and MSCE3 finds that voice change fax, do processing such as setting up the IWF resource;
It is that SIP is connected that step 703:MSCE3 judges with MSCE2, then sends the reINVITE request message and gives MSCE2, and voice take place in indication changes fax;
Step 704:MSCE2 sends the 200OK response message to MSCE3;
Step 705:MSCE3 sends the ACK acknowledge message to MSCE2;
Voice have taken place step 706:MSCE2 changes fax, and is that relaying is connected with MSCE1, then continues to send message to MSCE1, and voice have taken place notice changes and fax;
Step 707:MSCE1 judges that voice have taken place changes fax, does processing such as setting up the IWF resource
Step 708: medium face IWF begins to hold consultation, and accomplishes the transmission of fax.
Below all with media gateway MGW network interworking function IWF being provided is that example describes,
Certainly IWF also possibly provided by BSC (base station controller).
The present invention can but be not limited to and be applied in mobile communications network and ISDN User Part; As long as the communication network that interoffice adopts relaying to connect can adopt the inventive method, in sum; Adopt the present invention, be applied to the mobile network system interoffice junction and connect networking, when voice change fax; Can not rely on the V.21 detection of signal; And after the receiving terminal of fax finds that voice change fax, can set up the IWF resource at the transmitting terminal of fax fast, thereby improve the success rate that voice change fax.
The above embodiment is a more preferably embodiment of the present invention, and common variation that those skilled in the art carries out in technical scheme scope of the present invention and replacement all should be included within protection scope of the present invention.
Claims (9)
1. the implementation method of service converting voice to fax when an interoffice junction connects; It is characterized in that: the interoffice agreement that expands the relaying connection is to increase the message that the indication voice change fax; After a side in the calling and called of normal talking state initiated professional handoff request as the fax receiving terminal, this method may further comprise the steps:
(a) after fax receiving terminal mobile switching center emulation MSCE finds service converting voice to fax, set up network interworking function IWF resource and handle;
(b) fax receiving terminal MSCE sends message to facsimile transmission end MSCE, and voice have taken place in indication changes fax;
(c) after facsimile transmission end MSCE receives this message, set up the IWF resource and handle, medium face IWF holds consultation, to accomplish the transmission of fax.
2. the method for claim 1 is characterized in that: the message that said indication generation voice change fax is to realize through the existing field that expands in the existing message of ISDN User Part or Telephone User Part.
3. the method for claim 1 is characterized in that: the message that said indication generation voice change fax realizes through new field in ISDN User Part or the existing message of Telephone User Part.
4. the method for claim 1 is characterized in that: the message that said indication generation voice change fax realizes through newly-increased message in ISDN User Part or Telephone User Part.
5. like each described method in the claim 1 to 4, it is characterized in that: fax receiving terminal MSCE directly is connected through relaying with facsimile transmission end MSCE.
6. like each described method in the claim 1 to 4, it is characterized in that send end office (EO) and be connected through tandem exchange with reception end office (EO), and all be to adopt interoffice junction to connect, step (b) may further comprise the steps:
(b11) fax receiving terminal MSCE sends message to the MSCE of tandem exchange, and the indication voice change fax;
(b12) MSCE of tandem exchange sends message to facsimile transmission end MSCE, and the indication voice change fax.
7. like each described method in the claim 1 to 4; It is characterized in that: send end office (EO) and be connected through tandem exchange with reception end office (EO); And send end office (EO) and adopt SIP to be connected with tandem exchange, receive end office (EO) and adopt interoffice junction to be connected with tandem exchange, step (b) may further comprise the steps:
(b21) fax receiving terminal MSCE sends message and gives the MSCE of tandem exchange, and the indication voice change fax;
(b22) voice have taken place the MSCE of tandem exchange changes fax, judges with facsimile transmission end MSCE to be that SIP is connected, and then sends the reINVITE request message to facsimile transmission end MSCE, and voice take place in indication changes fax;
(b23) facsimile transmission end MSCE sends the 200OK response message for the MSCE of tandem exchange;
(b24) MSCE of tandem exchange sends the ACK acknowledge message to facsimile transmission end MSCE.
8. like each described method in the claim 1 to 4; It is characterized in that, send end office (EO) and be connected through tandem exchange, and send end office (EO) and adopt interoffice junction to be connected with tandem exchange with reception end office (EO); Receive end office (EO) and adopt SIP to be connected with tandem exchange, then step (b) may further comprise the steps:
(b31) fax receiving terminal MSCE judges with the MSCE of tandem exchange to be that SIP is connected, and then sends the reINVITE request message and gives the MSCE of tandem exchange, and voice take place in indication changes fax;
(b32) MSCE of tandem exchange sends the 200OK response message for fax receiving terminal MSCE;
(b33) fax receiving terminal MSCE sends the ACK acknowledge message for the MSCE of tandem exchange;
(b34) voice have taken place the MSCE of tandem exchange changes fax, and is that relaying is connected with facsimile transmission end MSCE, then continues to send message to facsimile transmission end MSCE, and voice have taken place notice changes and fax.
9. the method for claim 1, it is characterized in that: network interworking function IWF is provided by WMG or base station controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100934608A CN101262706B (en) | 2008-04-21 | 2008-04-21 | Realization method for voice switch to fax service |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100934608A CN101262706B (en) | 2008-04-21 | 2008-04-21 | Realization method for voice switch to fax service |
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| CN101262706A CN101262706A (en) | 2008-09-10 |
| CN101262706B true CN101262706B (en) | 2012-07-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102098276A (en) * | 2009-12-10 | 2011-06-15 | 中兴通讯股份有限公司 | Method and system for establishing data services by utilizing BICC (Bearer Independent Call Control) protocol |
| CN102547634B (en) * | 2010-12-10 | 2015-10-28 | 中兴通讯股份有限公司 | Realize the system and method turning fax across the voice of agreement |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1685691A (en) * | 2002-11-14 | 2005-10-19 | 西门子公司 | Support of fax and Modem in SIP/SIP-T network and in interworking between said network and ISUP+/BICC |
| CN1801874A (en) * | 2005-01-07 | 2006-07-12 | 华为技术有限公司 | Method for realizing voice service switching to fax service |
| CN101111002A (en) * | 2007-09-05 | 2008-01-23 | 中兴通讯股份有限公司 | Lossless transmission method in IP field junction centre after implementing business change by voice |
| CN101132461A (en) * | 2007-08-01 | 2008-02-27 | 华为技术有限公司 | Method, system and equipment for implementing changing from voice business to fax business |
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2008
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1685691A (en) * | 2002-11-14 | 2005-10-19 | 西门子公司 | Support of fax and Modem in SIP/SIP-T network and in interworking between said network and ISUP+/BICC |
| CN1801874A (en) * | 2005-01-07 | 2006-07-12 | 华为技术有限公司 | Method for realizing voice service switching to fax service |
| CN101132461A (en) * | 2007-08-01 | 2008-02-27 | 华为技术有限公司 | Method, system and equipment for implementing changing from voice business to fax business |
| CN101111002A (en) * | 2007-09-05 | 2008-01-23 | 中兴通讯股份有限公司 | Lossless transmission method in IP field junction centre after implementing business change by voice |
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Effective date of registration: 20180702 Address after: California, USA Patentee after: Global innovation polymerization LLC Address before: 518057 Department of law, Zhongxing building, South hi tech Industrial Park, Nanshan District hi tech Industrial Park, Guangdong, Shenzhen Patentee before: ZTE Corp. |
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Granted publication date: 20120718 |