CN101316393B

CN101316393B - Method and system for implementing change from speech service to fax service

Info

Publication number: CN101316393B
Application number: CN2008101416108A
Authority: CN
Inventors: 宋端成; 关先锋
Original assignee: ZTE Corp
Current assignee: Zhao Shengdi
Priority date: 2008-07-14
Filing date: 2008-07-14
Publication date: 2011-06-22
Anticipated expiration: 2028-07-14
Also published as: CN101316393A

Abstract

The invention discloses a method for realizing the change from voice service into fax service and a system thereof and includes a fax sender and a fax receiver, at least one party of which is served as a mobile station. The method of the invention comprises the following steps that: voice communication is established between the fax sender and the fax receiver; the fax receiver generates a message notifying the change of a voice into a fax and a mobile switching emulation center obtains the notification message and determines the faxing direction according to the notification message; the mobile switching emulation center completes the switching from the voice service to the fax service of the fax sender and the fax receiver; and the fax sender and the fax receiver finish sending the fax. The method and the system of the invention realize the change from the voice to the fax on the basis of the existing protocol, and have the advantages of simpleness, convenience and good compatibility.

Description

A kind of method and system that realize from changing from voice business to fax business

Technical field

The present invention relates to moving communicating field, relate in particular to the method that realizes changing from voice business to fax business at moving communicating field.

Background technology

Mobile communications network is realized and PSTN (Public Switched Telephone Network, public switched telephone network) the similar traditional circuit type data service of network by IWF (Inter working Function, network interworking function) equipment.IWF is the equipment that IWF is provided between mobile communications network and PSTN network.It utilizes the MODEM (modulator-demodulator) on MS (expression has the terminal of circuit type data service function in this article for Mobile Station, travelling carriage) and the IWF to come together to the user provides and wired MODEM identical functions, to realize circuit data service.

At present, the user is widely used to be to be introduced into the mode that voice carry out facsimile service again, and promptly user both sides are introduced into voice call, and then send a fax, and is called for short " voice change fax ".

The domestic patent of patent 1[, denomination of invention: method, system and the equipment of realizing changing from voice business to fax business; Application number: 200710119839.7; Publication number CN 101132461A; Inventor: Li Yunfei, Jia Yigang, Zhu Guojun] a kind of method that realizes voice commentaries on classics fax has been described, before briefly introducing this patent, at first describe as follows to the several signals that occur in the reciprocal process of wherein faxing:

V.21 signal tone: i.e. leader V.21, be the 300bps modulation signal, be that the byte sequence of 0X7E is formed by successive value.

CNG:Calling Tone is the single-tone of 1100HZ, is used to indicate caller data circuit connection device; It is optional signal tone.

CED:Called Station Identification is the single-tone of 2100HZ, is used to indicate called data circuit connection device; It is optional signal tone.

Fig. 1 be patent 1 describe based on IP BSC (IP: Internet protocol, Internet Protocol; BSC: base station controller, Base Station Controller), MS1 sends and faxes to MS2, (Session Initiation Protocol, Session initiation Protocol) connects to stride an innings SIP, realizes that voice change the flow process of fax.

BSC1 and MSCE1 (MSCE: move the exchange simulation centre, Mobile Switching CenterEmulation) be that IP connects between, be that IP connects between BSC2 and the MSCE2, be that SIP connects between MSCE1 and the MSCE2, the IWF position is at MGW (Media Gateway, media gateway), be that IP connects between MGW1 and the MGW2.Implementation step is as follows:

S101, MS1 audio call MS2 stride innings SIP and connect, and after speech called the replying, conversation is normal.

S102, when needs send fax, the calling and called both sides press the startup fax key of facsimile machine, the beginning voice change faxes; Facsimile transmission side MS1 sends the CNG sound to fax recipient MS2.

S103, fax recipient MS2 receive after the CNG, send the CED sound to facsimile transmission side MS1.

S104, fax recipient MS2 notify BSC2 that service converting voice to fax takes place by eating dishes without rice or wine.

S105, IP BSC2 send message informing MSCE2 equally, wherein carry the direction of fax---and therefore the recipient of fax, MSCE2 are known service converting voice to fax have been taken place, and the direction of fax is the recipient of fax.

Be that SIP connects between S106a, MSCE2 judgement and the MSCE1, therefore, by sending INVITE, wherein carry harmless encoding and decoding, and, notify MSCE1 that service converting voice to fax has taken place by direction---the recipient of fax that the agreement that expands is carried fax.

S106b, MSCE1 receive this message, according to the fax direction of wherein carrying---the recipient of fax, know service converting voice to fax has taken place, and the direction of local terminal fax is exactly facsimile transmission side's (opposite with the fax direction of carrying among the INVITE); Send 200OK message to MSCE2, wherein carry harmless encoding and decoding.

S106c, MSCE2 send ACK to MSCE1, confirm.

S107a, facsimile transmission side MSCE1 send message to IP BSC1, consult to switch to facsimile service, and revise the form of encoding and decoding for can't harm, and the direction of wherein carrying fax is the transmit leg of fax.

S107b, fax recipient MSCE2 send message to IP BSC2, revise encoding and decoding and are harmless form.

S108, IP BSC1 notify facsimile transmission side MS1 by eating dishes without rice or wine, consult to switch to facsimile service.

S109a, facsimile transmission side MSCE1 and MGW1 carry out interacting message, consult to revise encoding and decoding and are harmless encoding and decoding, and do operations such as setting up the IWF resource, the transmit leg of the direction of wherein carrying fax---fax.

S109b, fax recipient MSCE2 and MGW2 carry out interacting message, consult to revise encoding and decoding and are harmless encoding and decoding, and do operations such as setting up the IWF resource, wherein carry the fax direction---the recipient of fax.

IWF on S110a, facsimile transmission side MS1 and the MGW1 holds consultation.

IWF on S110b, fax recipient MS2 and the MGW2 holds consultation.

IWF on S110b, MGW1 and the MGW2 holds consultation, and finishes the transmission of fax.

Fig. 2 is that the MS1 transmission that patent 1 is described faxes to MS2, (Time DivisionMultiplexing, time division multiplexing) connects to stride an innings TDM, realizes that voice change the flow process of fax, and implementation step is as follows:

S201, MS1 audio call MS2 stride innings TDM and connect, and MSCE1 and MSCE2 notify MGW1 and MGW2 to detect from TDM to IP direction CED signal tone respectively, and after speech called the replying, conversation is normal.

S202, calling and called both sides press the startup fax key of facsimile machine, and the beginning voice change fax; Facsimile transmission side MS1 sends the CNG sound to fax recipient MS2.

S203, fax recipient MS2 receive after the CNG, send the CED sound to facsimile transmission side MS1.

The processing of S204～S205 is identical with S104～S105, repeats no more.

Be that TDM connects between S206, MSCE2 discovery and the MSCE1, MSCE2 just sends message to IP BSC2, revises the form of encoding and decoding for can't harm.

S207, MSCE2 and MGW2 carry out interacting message, consult to revise encoding and decoding and are harmless encoding and decoding, and do operations such as setting up the IWF resource, the recipient of the direction of wherein carrying fax---fax.

IWF on S208, MS2 and the MGW2 holds consultation.

S209, MGW1 detect the CED signal tone from TDM to the IP direction, and report MSCE1; MSCE1 knows that thus voice have taken place changes fax, and the direction of fax is facsimile transmission side.

S210, facsimile transmission side MSCE1 send message to IP BSC1, consult to switch to facsimile service, and revise the form of encoding and decoding for can't harm, and the direction of carrying fax---the transmit leg of fax.

S211, IP BSC1 notify facsimile transmission side MS1 by eating dishes without rice or wine, consult to switch to facsimile service.

S212, facsimile transmission side MSCE1 and MGW1 send interacting message, consult to revise encoding and decoding and are harmless encoding and decoding, and do operations such as setting up the IWF resource, the transmit leg of the direction of wherein carrying fax---fax.

IWF on S213, facsimile transmission side MS1 and the MGW1 holds consultation.

IWF on S214, MGW1 and the MGW2 holds consultation, and finishes the transmission of fax.

Patent 1 described voice change the realization flow of fax, have following not enough point:

1, it need expand Session Initiation Protocol, is used for transmitting between two different MSCE the direction of fax, will encounter problems in different vendor's device intercommunicating like this.

When 2, MSCE and BSC carry out voice commentaries on classics Fax Messaging notice mutually, the direction that also needs to carry fax, this needs extension protocol to realize equally.

3, stride innings TDM when connecting, the signal tone of detection is CED, because CED is optional signal tone, causes fax failure thereby therefore might examine less than this sound.

Summary of the invention

In order to overcome above-mentioned deficiency of the prior art, the present invention proposes a kind of method and system that realize from changing from voice business to fax business.

In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:

A kind of method that realizes from changing from voice business to fax business comprises facsimile transmission side and fax recipient, and described facsimile transmission side and at least one side of fax recipient are travelling carriage, comprise the steps:

S1, facsimile transmission side and fax recipient set up voice call;

S2, fax recipient generate voice commentaries on classics fax notice message, move the exchange simulation centre and obtain described notification message and determine the fax direction according to described notification message;

S3, mobile exchange simulation centre are finished facsimile transmission side and the switching of fax recipient from the speech business to the facsimile service;

S4, facsimile transmission side and fax recipient finish the transmission of fax.

At travelling carriage is facsimile transmission side, and when the public switched telephone network facsimile machine was the fax recipient, described step S1, S2, S3 and S4 specifically comprised the steps:

A01, travelling carriage audio call public switched telephone network facsimile machine are set up voice call;

A02, travelling carriage send the CNG sound to the public switched telephone network facsimile machine;

A03, public switched telephone network facsimile machine are received after the CNG sound, send the CED sound to travelling carriage;

A04, public switched telephone network facsimile machine send V.21 signal tone to travelling carriage;

A05, media gateway detect the V.21 signal tone from TDM to the IP direction, report to move the exchange simulation centre; Described V.21 signal tone changes fax notice message as voice;

A06, the mobile V.21 signal tone that exchanges simulation centre according to described medium gateway to report, service converting voice to fax determine to take place, and travelling carriage is facsimile transmission side, sends message to base station controller, negotiation switches to facsimile service, and the modification encoding and decoding are lossless format;

A07, base station controller are notified travelling carriage by eating dishes without rice or wine, consult to switch to facsimile service;

A08, mobile exchange simulation centre and media gateway are carried out interacting message, and consulting to revise encoding and decoding is lossless encoding/decoding, sets up the IWF resource, and the indication travelling carriage is the transmit leg of fax in the IWF resource;

A09, travelling carriage and IWF hold consultation;

A10, IWF and public switched telephone network facsimile machine are held consultation, and finish facsimile transmission.

At the public switched telephone network facsimile machine is facsimile transmission side, and when travelling carriage was the fax recipient, described step S1, S2, S3 and S4 specifically comprised the steps:

B01, public switched telephone network facsimile machine audio call travelling carriage are set up voice call;

B02, public switched telephone network facsimile machine send the CNG sound to travelling carriage;

After B03, travelling carriage are received the CNG sound, send the CED sound to the public switched telephone network facsimile machine;

B04, travelling carriage are by the informing base station controller generation service converting voice to fax of eating dishes without rice or wine, and the notification message of eating dishes without rice or wine of this generation service converting voice to fax changes fax notice message as voice;

B05, base station controller change fax notice message with described voice and send to mobile exchange simulation centre;

B06, moves the exchange simulation centre and change fax notice message, determine service converting voice to fax takes place, and travelling carriage is the recipient of fax that send message to base station controller, the modification encoding and decoding are lossless format according to described voice;

B07, mobile exchange simulation centre and media gateway are carried out interacting message, and consulting to revise encoding and decoding is lossless encoding/decoding, sets up the IWF resource, and the indication travelling carriage is the fax recipient in the IWF resource;

B08, travelling carriage and IWF hold consultation;

B09, IWF send V.21 signal tone to the public switched telephone network facsimile machine;

Hold consultation between B10, IWF and the public switched telephone network facsimile machine, finish facsimile transmission.

When the caller travelling carriage is connected for striding innings TDM with called mobile station, the caller travelling carriage is facsimile transmission side, and called mobile station is during for the fax recipient, and described step S1, S2, S3 and S4 specifically comprise the steps:

C01, caller travelling carriage audio call called mobile station, caller move the exchange simulation centre and called mobile exchange simulation centre is notified caller media gateway and the V.21 signal tone of called media gateway detection from TDM to the IP direction respectively, sets up conversation;

C02, caller travelling carriage send the CNG sound to called mobile station;

After C03, called mobile station are received the CNG sound, send the CED sound to the caller travelling carriage;

C04, called mobile station are notified called base station controller generation service converting voice to fax by eating dishes without rice or wine, the notification message of eating dishes without rice or wine of this generation service converting voice to fax changes fax notice message as voice;

C05, station control change fax notice message with described voice and send to called mobile exchange simulation centre;

C06, called mobile exchange simulation centre determine service converting voice to fax takes place according to the notice of called base station controller, and called mobile station is the recipient of fax, send message to called base station controller, and the modification encoding and decoding are lossless format;

C07, called mobile exchange simulation centre and called media gateway are carried out interacting message, and negotiation is repaiied and attacked encoding and decoding is lossless encoding/decoding, sets up the IWF resource, and the indication called mobile station is the fax recipient in the IWF resource;

IWF on C08, called mobile station and the called media gateway holds consultation;

IWF on C09, the called media gateway sends V.21 signal tone to the caller media gateway;

C10, caller media gateway detect the V.21 signal tone from TDM to the IP direction, report caller and move the exchange simulation centre.

The V.21 signal tone of exchange simulation centre according to the caller medium gateway to report moved in C11, caller, service converting voice to fax determine to take place, and the caller travelling carriage is facsimile transmission side, sends message to the caller base station controller, negotiation switches to facsimile service, and the modification encoding and decoding are lossless format;

C12, caller base station controller are notified the caller travelling carriage by eating dishes without rice or wine, consult to switch to facsimile service;

The exchange simulation centre is moved in C13, caller and the caller media gateway is carried out interacting message, and consulting to revise encoding and decoding is lossless encoding/decoding, sets up the IWF resource, and indication caller travelling carriage is facsimile transmission side in the IWF resource;

IWF on C14, caller travelling carriage and the caller media gateway holds consultation;

IWF and called mobile station on C15, the caller media gateway are held consultation, and finish facsimile transmission.

When the caller travelling carriage is connected for striding innings SIP with called mobile station, the caller travelling carriage is facsimile transmission side, and called mobile station is during for the fax recipient, and described step S1, S2, S3 and S4 specifically comprise the steps:

D01, caller travelling carriage audio call called mobile station are set up conversation;

D02, caller travelling carriage send the CNG sound to called mobile station;

After D03, called mobile station are received the CNG sound, send the CED sound to the caller travelling carriage;

D04, called mobile station are notified called base station controller generation service converting voice to fax by eating dishes without rice or wine, the notification message of eating dishes without rice or wine of this generation service converting voice to fax changes fax notice message as voice;

D05, called base station controller change fax notice with described voice and send to called mobile exchange simulation centre, and called mobile exchange simulation centre is determined service converting voice to fax takes place, and called mobile station is the recipient of fax;

It is that SIP connects that D06a, called mobile exchange simulation centre judgement and caller are moved between the exchange simulation centre, sends INVITE, wherein carries harmless encoding and decoding, and the notice caller is moved and exchanged simulation centre generation service converting voice to fax;

D06b, caller are moved the exchange simulation centre and are received the lossless encoding/decoding that carries in the INVITE, determine to take place service converting voice to fax, and the caller travelling carriage is the transmit leg of fax, sends 200OK message to called mobile exchange simulation centre, wherein carries harmless encoding and decoding;

D06c, called mobile exchange simulation centre send ACK message and move the exchange simulation centre to caller, confirm;

D07a, caller are moved the exchange simulation centre and are sent message to the caller base station controller, consult to switch to facsimile service, and the modification encoding and decoding are lossless format;

D07b, called mobile exchange simulation centre send message to called base station controller, and the modification encoding and decoding are lossless format;

D08, caller base station controller are notified the caller travelling carriage by eating dishes without rice or wine, consult to switch to facsimile service.

The exchange simulation centre is moved in D09a, caller and the caller media gateway is carried out interacting message, and consulting to revise encoding and decoding is lossless format, sets up the IWF resource, and indication caller travelling carriage is the transmit leg of fax in the IWF resource;

D09b, called mobile exchange simulation centre and called media gateway are carried out interacting message, and consulting to revise encoding and decoding is lossless encoding/decoding, sets up the IWF resource, and the indication called mobile station is the recipient of fax in the IWF resource;

IWF on D10a, caller travelling carriage and the caller media gateway holds consultation;

IWF on D10b, called mobile station and the called media gateway holds consultation;

IWF on D11, caller media gateway and the called media gateway holds consultation, and finishes facisimile transmission.

Move exchange simulation centre and second and move that to exchange simulation centre be that SIP is connected when first, moving the exchange simulation centre is that TDM is connected with terminal room, first moves the exchange simulation centre near facsimile transmission side, second moves when exchanging simulation centre near the fax recipient, and described step S1, S2, S3 and S4 specifically comprise the steps:

E01, audio call stage, first moves exchange simulation centre and second moves the exchange simulation centre and notifies first media gateway and second media gateway to detect from TDM to the IP direction V.21 signal tone respectively, sets up conversation;

E02, facsimile transmission direction fax recipient send the CNG sound;

After E03, fax recipient receive the CNG sound, send the CED sound to facsimile transmission side;

E04, fax receive direction facsimile transmission side send V.21 signal tone; Described V.21 signal tone changes fax notice message as voice;

E05, second media gateway detect the V.21 signal tone from TDM to the IP direction, report second to move the exchange simulation centre; Second moves the exchange simulation centre determines that local terminal is near the fax recipient;

E06a, second moves that the exchange simulation centre is judged and first to move between the exchange simulation centre be that SIP connects, and sends INVITE, wherein carries lossless encoding/decoding, notifies first to move exchange simulation centre generation service converting voice to fax;

E06b, first moves the exchange simulation centre according to the lossless encoding/decoding that carries in the INVITE, determine to take place service converting voice to fax, and local terminal sends 200OK message and moves the exchange simulation centre to second near facsimile transmission side, wherein carries harmless encoding and decoding;

E06c, second moves exchange simulation centre transmission ACK message and moves the exchange simulation centre to first, confirms;

E07a, first moves the exchange simulation centre and first media gateway is carried out interacting message, and consulting to revise encoding and decoding is lossless encoding/decoding;

E07b, second moves the exchange simulation centre and second media gateway is carried out interacting message, and consulting to revise encoding and decoding is lossless encoding/decoding;

E08, facsimile transmission side and fax recipient hold consultation by the IWF resource on the media gateway, finish facisimile transmission.

The invention also discloses a kind of system that realizes from changing from voice business to fax business, comprise facsimile transmission side and fax recipient, described facsimile transmission side and at least one side of fax recipient are travelling carriage, also comprise and move the exchange simulation centre, the voice that described mobile exchange simulation centre is used to obtain to be generated by the fax recipient change fax notice message, and change fax notice message according to described voice and finish facsimile transmission side and the switching of fax recipient from the speech business to the facsimile service.

Adopt the present invention to realize service converting voice to fax, can solve the weak point of patent 1, because the present invention is based upon on the existing protocol basis fully, as long as each network element of being correlated with in the mobile communications network, all cooperate and realize according to method of the present invention, just can this business of simple realization, and compatible better.

Description of drawings

Fig. 1 is that the MS1 transmission that patent 1 is described faxes to MS2, strides an innings SIP connection, and voice change fax realization flow figure;

Fig. 2 is that the MS1 transmission that patent 1 is described faxes to MS2, strides an innings TDM connection, and voice change fax realization flow figure;

Fig. 3 is that the send a fax voice of PSTN of specific embodiment of the invention 1MS change the realization flow figure of fax;

Fig. 4 is that the specific embodiment of the invention 2PSTN MS voice of sending a fax change the realization flow figure of fax;

Fig. 5 be specific embodiment of the invention 3MS1 send a fax MS2, stride innings TDM and connect the realization flow figure that voice change fax;

Fig. 6 be specific embodiment of the invention 4MS1 send a fax MS2, stride innings SIP and connect the realization flow figure that voice change fax;

Fig. 7 is to be that SIP connects, two ends are that TDM connects the realization flow figure that voice change fax between 5 two tandem exchanges of the specific embodiment of the invention.

Embodiment

Contrast accompanying drawing and the present invention is described in further detail below in conjunction with embodiment.

The implementation method of service converting voice to fax of the present invention is based upon on existing network and the agreement basis, as long as each exchange all is unified to handle according to this method in the network, just can makes things convenient for and simply realizes this business.

Below in conjunction with 5 kinds of concrete application scenarioss of the present invention, the present invention is realized the flow process of service converting voice to fax is elaborated.For convenience of description, hereinafter related device has all used the shorthand of English+numeral, and for corresponding with preamble, the spy does an explanation again to this corresponding relation:

Travelling carriage: MS; Move exchange simulation centre: MSCE; Media gateway: MGW; Base station controller: BSC or IP BSC; Sequence number 1 expression " caller " or " first " after each English abbreviation, for example MSCE1 represents that caller moves exchange simulation centre or first and move the exchange simulation centre; Sequence number 2 expressions " called " or " second ", for example MGW2 represents the called media gateway or second media gateway.

Application example 1

As Fig. 3 is that MS sends the application scenarios that faxes to the PSTN facsimile machine, and the method for realize voice commentaries on classics fax comprises the steps: in fact

S301, MS audio call PSTN facsimile machine, MSCE1 notice MGW1 detects from TDM to the IP direction V.21 signal tone, and behind the PSTN facsimile machine voice answer-back, conversation is normal.

S302, calling and called both sides press the startup fax key of facsimile machine, and the beginning voice change fax; Facsimile transmission side MS sends the CNG sound to the recipient PSTN facsimile machine of fax.

S303, PSTN facsimile machine are received after the CNG, send the CED sound to the transmit leg MS of fax.

S304, PSTN facsimile machine send V.21 signal tone to the transmit leg MS of fax.

S305, MGW1 detect the V.21 signal tone from TDM to the IP direction, report MSCE1.

S306, MSCE1 find that V.21 MGW1 detects after the signal tone, just knows service converting voice to fax has taken place, and determined direction---the transmit leg of fax of fax; MSCE1 sends message to IPBSC, consults to switch to facsimile service, and revises the form of encoding and decoding for can't harm.

S307, IP BSC notify MS by eating dishes without rice or wine, consult to switch to facsimile service.

S308, MSCE1 and MGW1 carry out interacting message, consult to revise encoding and decoding and are harmless encoding and decoding, and do operations such as setting up the IWF resource, the transmit leg of the direction of wherein carrying fax---fax.

Begin to hold consultation between the transmit leg MS of S309, fax and the IWF.

Hold consultation between S310, IWF and fax recipient's the PSTN facsimile machine, and finally finish the transmission of fax.

Application example 2

As Fig. 4 is that the PSTN facsimile machine sends the application scenarios that faxes to MS, and the method for realize voice commentaries on classics fax comprises the steps: in fact

S401, PSTN facsimile machine audio call MS, MSCE1 notice MGW1 detects from TDM to the IP direction V.21 signal tone, and behind the MS voice answer-back, conversation is normal.

S402, calling and called both sides press the startup fax key of facsimile machine, and the beginning voice change fax; PSTN facsimile machine in facsimile transmission side sends the CNG sound to the recipient MS of fax.

S403, MS receive after the CNG, to the transmit leg PSTN facsimile machine transmission CED of fax sound.

S404, fax recipient MS find to carry out to notify IPBSC that service converting voice to fax takes place by eating dishes without rice or wine after the voice commentaries on classics fax.

S405, IP BSC notify MSCE1 equally, switch to switch to fax service.

S406, MSCE1 receive this message, promptly can know service converting voice to fax has taken place, and determine direction---the recipient of fax of fax; MSCE1 sends message to IP BSC, and revises the form of encoding and decoding for can't harm.

S407, MSCE1 and MGW1 send interacting message, consult to revise encoding and decoding and are harmless encoding and decoding, and do operations such as setting up the IWF resource, and the direction of wherein faxing is designated as the recipient of fax.

IWF on S408, fax recipient MS and the MGW1 begins to hold consultation.

IWF on S409, the MGW begins to send V.21 signal tone to facsimile transmission side.

Hold consultation between the PSTN facsimile machine of S410, IWF and facsimile transmission side, and finally finish the transmission of fax.

Application example 3

As Fig. 5 is that the MS1 transmission faxes to MS2, strides the application scenarios that innings TDM connects, and the method for realize voice commentaries on classics fax comprises the steps: in fact

S501, MS1 audio call MS2 stride innings TDM and connect, and MSCE1 and MSCE2 notify MGW1 and MGW2 to detect from TDM to the IP direction V.21 signal tone respectively, and after speech called the replying, conversation is normal.

S502, calling and called are all pressed the startup fax key of facsimile machine, and the beginning voice change fax; Facsimile transmission side MS1 sends the CNG sound to fax recipient MS2.

S503, fax recipient MS2 receive after the CNG, send the CED sound to facsimile transmission side MS1.

The processing of S504～S508 is identical with S404～S408, repeats no more.

IWF on S509, the MGW2 begins to send V.21 signal tone to facsimile transmission side

The recipient MS2 of fax changes the incipient stage of fax at voice, also can send V.21 signal tone to facsimile transmission side MS1, but owing to the voice channel that still diminished between IP BSC2 and the MGW2 at that time (generally using the encoding and decoding of compressions such as EVRC, 13K), so facsimile transmission side receive this V.21 the waveform of signal tone great changes have taken place, it is a signal tone V.21 that MGW1 can't discern this, therefore also needs IWF oneself on the MGW2 to construct the transmit leg that signal tone V.21 is sent to fax.

The processing of S510～S515 is identical with S305～S310, repeats no more.

Application example 4

As Fig. 6 is that the MS1 transmission faxes to MS2, strides the application scenarios that innings SIP connects, and the method for realize voice commentaries on classics fax comprises the steps: in fact

S601, MS1 audio call MS2 stride innings SIP and connect, and after speech called the replying, conversation is normal.

S602, calling and called are all pressed the startup fax key of facsimile machine, and the beginning voice change fax; Facsimile transmission side MS1 sends the CNG sound to fax recipient MS2.

S603, fax recipient MS2 receive after the CNG, send the CED sound to facsimile transmission side MS1.

S604, fax recipient MS2 find to carry out to notify BSC2 that service converting voice to fax takes place by eating dishes without rice or wine after the voice commentaries on classics fax.

Therefore S605, IP BSC2 notify MSCE2 equally, and MSCE2 is known service converting voice to fax has been taken place, and determined direction---the recipient of fax of fax.

Be that SIP connects between S606a, MSCE2 judgement and the MSCE1, therefore, by sending INVITE, wherein carry harmless encoding and decoding, service converting voice to fax has taken place in notice MSCE1;

S606b, MSCE1 receive this message, according to the harmless encoding and decoding of wherein carrying, know service converting voice to fax has taken place, and determined direction---the transmit leg of fax of fax; Send 200OK message to MSCE2, wherein carry harmless encoding and decoding;

S606c, MSCE2 send ACK to MSCE1, confirm.

S607a, facsimile transmission side MSCE1 send message to IP BSC1, consult to switch to facsimile service, and revise the form of encoding and decoding for can't harm;

S607b, fax recipient MSCE2 send message to IP BSC2, revise encoding and decoding and are harmless form.

S608, IP BSC1 notify facsimile transmission side MS1 by eating dishes without rice or wine, consult to switch to facsimile service.

S609a, facsimile transmission side MSCE1 and MGW1 carry out interacting message, consult to revise encoding and decoding and are harmless form, and do operations such as setting up the IWF resource, the transmit leg of the direction of wherein carrying fax---fax;

S609b, fax recipient MSCE2 and MGW2 carry out interacting message, consult to revise encoding and decoding and are harmless encoding and decoding, and do operations such as setting up the IWF resource, the recipient of the direction of wherein carrying fax---fax.

IWF on S610a, facsimile transmission side MS1 and the MGW1 holds consultation;

IWF on S610b, fax recipient MS2 and the MGW2 holds consultation.

IWF on S611, MGW1 and the MGW2 holds consultation, and finishes the transmission of fax.

Application example 5

As Fig. 7 is to be that SIP connects, two ends are the application scenarios that TDM connects between two tandem exchanges, and the method for realize voice commentaries on classics fax comprises the steps: in fact

S701, audio call stage, MSCE1 and MSCE2 notify MGW1 and MGW2 to detect from TDM to the IP direction V.21 signal tone respectively, and after speech called the replying, conversation is normal.

S702, calling and called are all pressed the startup fax key of facsimile machine, and the beginning voice change fax; Facsimile transmission direction fax recipient sends the CNG sound.

S703, fax recipient receive after the CNG, send the CED sound to facsimile transmission side.

S704, fax receive direction facsimile transmission side send V.21 signal tone.

S705, close fax recipient's MGW2 detects the V.21 signal tone from TDM to the IP direction, and reports MSCE2; It oneself is tandem exchange that MSCE2 judges, can determine the recipient of local exchange near fax.

Be that SIP connects between S706a, MSCE2 judgement and the MSCE1, therefore, by sending INVITE, wherein carry harmless encoding and decoding, service converting voice to fax has taken place in notice MSCE1;

S706b, MSCE1 receive this message, according to the harmless encoding and decoding of wherein carrying, know service converting voice to fax has taken place; It oneself is tandem exchange that MSCE1 judges, can determine the transmit leg of local exchange near fax; Send 200OK message to MSCE2, wherein carry harmless encoding and decoding;

S706c, MSCE2 send ACK to MSCE1, confirm.

S707a, MSCE1 and MGW1 carry out interacting message, consult to revise encoding and decoding and are harmless encoding and decoding;

S707b, MSCE2 and MGW2 carry out interacting message, consult to revise encoding and decoding and are harmless encoding and decoding.

Begin to hold consultation between S708, facsimile transmission side and the fax recipient, and finish the transmission of fax.

Sum up the embodiment of the invention described above, it mainly comprises following four realization principles:

Principle 1: at chain of command, voice change the direction of transfer of fax notice message, are the transmit leg transmission from the receive direction fax of fax all the time.This principle is a general principle of the present invention, and following every principle all is based on principle 1 and concrete application under different scenes.

Principle 2: the recipient's that always faxes MS initiates service converting voice to fax from eating dishes without rice or wine, and does not allow the MS of facsimile transmission side to initiate service converting voice to fax from eating dishes without rice or wine.

This principle has guaranteed between MS, BSC and the MSCE on principle 1, carries out the transmission that voice change fax notice message.Therefore, when MSCE received that the voice of BSC change fax notice message, the direction that then can judge fax was the recipient of fax.Therefore compare with patent 1, the message between BSC and the MSCE does not need to have indicated the directional information of fax, so not needs to have expanded the agreement between BSC and the MSCE yet.

Principle 3: stride innings SIP when connecting, what carry in the INVITE of MSCE according to the SIP that receives is that the encoding and decoding that can't harm are known service converting voice to fax has been taken place, and knows the direction of fax.

When this principle has guaranteed between MSCE and the MSCE that SIP connects on principle 1, carry out the transmission that voice change fax notice message.Therefore, when MSCE receives the SIP INVITE, be the encoding and decoding that can't harm according to what wherein carry, just can know what the commentaries on classics of generation voice was faxed, and the direction of fax is: the close transmit leg of faxing of local exchange, the close recipient who faxes of opposite end office.Therefore compare with patent 1, the SIP INVITE does not need to have indicated the directional information of fax, so not needs to expand any Session Initiation Protocol yet.

Principle 4: stride innings TDM when connecting, service converting voice to fax has taken place, therefore adopt indication MGW to detect the method for V.21 signal tone, know service converting voice to fax has taken place from TDM to the IP direction by MSCE owing to can't notify mutually between the MSCE.

Because when carrying out facsimile negotiation between MS and the MS, article one, V.21 signal tone must be to send from the transmit leg that the receive direction of fax is faxed, therefore MSCE receives that MGW reports when detecting V.21 signal tone, just can know service converting voice to fax has taken place, the direction of fax: when local exchange is end office (EO), then local exchange is the transmit leg of fax, and when local exchange was tandem exchange, then local exchange was near the recipient (the transmit leg notice voice that need to continue to fax change Fax Messaging) of fax.Therefore detect the CED signal tone with patent 1 and compare, method of the present invention is effectively reliable more, and is compatible better.

Realize service converting voice to fax with principle according to the method described above, do not need to expand existing any agreement, the equipment realization flow is very simple, and the user operates and also is simple and easy to use; Compatibility is also better.

The above embodiment; it is more preferably embodiment of the present invention; it is not limitation of the present invention; although for example the above embodiment all is to be described at the network model that IPBSC, IWF are positioned at the MGW side; but service converting voice to fax under other network models; also can use method of the present invention to realize; should understand, common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacement all should be included within protection scope of the present invention.

Claims

1. a realization comprises facsimile transmission side and fax recipient from the method for changing from voice business to fax business, and described facsimile transmission side and at least one side of fax recipient are travelling carriage, it is characterized in that, comprise the steps:

S1, facsimile transmission side and fax recipient set up voice call;

S4, facsimile transmission side and fax recipient finish the transmission of fax;

A09, travelling carriage and IWF hold consultation;

2. the method for claim 1 is characterized in that, is facsimile transmission side at the public switched telephone network facsimile machine, and when travelling carriage was the fax recipient, described step S1, S2, S3 and S4 specifically comprised the steps:

B08, travelling carriage and IWF hold consultation;

3. the method for claim 1, it is characterized in that when the caller travelling carriage is connected for striding innings TDM with called mobile station, the caller travelling carriage is facsimile transmission side, when called mobile station was the fax recipient, described step S1, S2, S3 and S4 specifically comprised the steps:

C02, caller travelling carriage send the CNG sound to called mobile station;

C05, called base station controller change fax notice message with described voice and send to called mobile exchange simulation centre;

C07, called mobile exchange simulation centre and called media gateway are carried out interacting message, and consulting to revise encoding and decoding is lossless encoding/decoding, sets up the IWF resource, and the indication called mobile station is the fax recipient in the IWF resource;

C10, caller media gateway detect the V.21 signal tone from TDM to the IP direction, report caller and move the exchange simulation centre;

4. the method for claim 1, it is characterized in that when the caller travelling carriage is connected for striding innings SIP with called mobile station, the caller travelling carriage is facsimile transmission side, when called mobile station was the fax recipient, described step S1, S2, S3 and S4 specifically comprised the steps:

D02, caller travelling carriage send the CNG sound to called mobile station;

D08, caller base station controller are notified the caller travelling carriage by eating dishes without rice or wine, consult to switch to facsimile service;

5. the method for claim 1, it is characterized in that, move exchange simulation centre and second and move that to exchange simulation centre be that SIP is connected when first, described first move the exchange simulation centre and second move the exchange simulation centre be that TDM is connected with terminal room respectively, first moves the exchange simulation centre near facsimile transmission side, second moves when exchanging simulation centre near the fax recipient, and described step S1, S2, S3 and S4 specifically comprise the steps:

E02, facsimile transmission direction fax recipient send the CNG sound;

E08, facsimile transmission side and fax recipient hold consultation, and finish facisimile transmission.

6. a realization is from the system of changing from voice business to fax business, comprise facsimile transmission side and fax recipient, described facsimile transmission side and at least one side of fax recipient are travelling carriage, it is characterized in that, also comprise and move the exchange simulation centre, the voice that described mobile exchange simulation centre is used to obtain to be generated by the fax recipient change fax notice message, and change fax notice message according to described voice and finish facsimile transmission side and the switching of fax recipient from the speech business to the facsimile service;

At travelling carriage is facsimile transmission side, and when the public switched telephone network facsimile machine was the fax recipient, described facsimile transmission side and the switching of fax recipient from the speech business to the facsimile service specifically realized by following steps:

A09, travelling carriage and IWF hold consultation;