CN104811579B - A kind of facsimile service processing system, method and apparatus - Google Patents
A kind of facsimile service processing system, method and apparatus Download PDFInfo
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- CN104811579B CN104811579B CN201410038825.2A CN201410038825A CN104811579B CN 104811579 B CN104811579 B CN 104811579B CN 201410038825 A CN201410038825 A CN 201410038825A CN 104811579 B CN104811579 B CN 104811579B
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Abstract
The invention discloses a kind of facsimile service processing systems, method and apparatus, conversion and control equipment in the first communication network determines that the intersection for the coding mode that the coding mode that the facsimile equipment in the second communication network is supported is supported with the facsimile equipment in the first communication network is empty set, when receiving the facsimile data that the facsimile equipment in the first communication network is sent, after the coding mode of the facsimile data to be converted to the coding mode that the facsimile equipment in the second communication network is supported, it is sent to the facsimile equipment in the second communication network.Using technical solution of the present invention, since the coding mode that make use of facsimile equipment of the conversion and control equipment to being in the first communication network in the first communication network is converted, be converted to the coding mode of the facsimile equipment in the second communication network, therefore, in the case of coding negotiation failure, it still is able to keep being normally carried out for facsimile service, improves the success rate of facsimile service.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of facsimile service processing system, method and apparatus.
Background technology
It is traditional based on public switched telephone network（Public Switched Telephone Network, PSTN）Biography
True business is substantially to be realized by T.30 facsimile signal, and with IP multimedia subsystem, IMS（IP Multimedia
Subsystem, IMS）The continuous development of IMS network, the Fax over IP business of IMS network user need the biography with PSTN network user
True business realizing intercommunication.
At present, it is different according to the code encoding/decoding mode used in facsimile posting, the transmission master of the facsimile signal of IP based network
It will be there are two types of mode：Based on T.30 agreement（Voice-band data（Voice Band Data, VBD）Pattern）With based on T.38 assisting
View.
Which kind of transmission mode is the prior art mostly consult according to the protocol type of terminal support using.Its main process is：
Whether called Media Gateway inquiry called user terminal supports T.38 agreement, if supporting T.38 agreement, is called Media Gateway
T.38 agreement is answered to caller soft switch response for selection, and negotiation result is all using T.38 agreement in facsimile posting；If
Called user terminal does not support T.38 agreement, then select T.30 agreement to caller soft switch response answer, negotiation result be passing
Facsimile service is all carried out using T.30 agreement during true.
Above-mentioned negotiation scheme have in call subscriber terminal and called user terminal a side or two Fang Jun support T.38 and
T.30 success can be consulted during agreement, when call subscriber terminal and called user terminal only support a kind of agreement, both sides support
Protocol type it is identical when, can also consult success, however, only supporting a kind of association in call subscriber terminal and called user terminal
View, but the protocol type that both sides support can then cause to consult to fail, negotiation unsuccessfully also means that facsimile service when differing
Failure.Therefore, the existing facsimile service processing method based on negotiation scheme there are facsimile service success rate it is relatively low the problem of.
The content of the invention
The embodiment of the present invention provides a kind of facsimile service processing system, method and apparatus, to solve to deposit in the prior art
Because coding negotiation failure caused by facsimile service success rate it is relatively low the problem of.
Technical solution of the embodiment of the present invention is as follows：
A kind of facsimile service processing system, including：
Facsimile equipment in the first communication network, for the conversion and control equipment hair in the first communication network
Send facsimile data；
Conversion and control equipment in the first communication network, for receiving the Media Gateway in the first communication network
The coding negotiation of transmission according to the coding negotiation result as a result, and determine what the facsimile equipment being in the second communication network was supported
The intersection for the coding mode that coding mode is supported with the facsimile equipment in the first communication network is empty set and is receiving
During the facsimile data that the facsimile equipment being in the first communication network is sent, the coding mode of the facsimile data is converted to
After the coding mode that the facsimile equipment being in the second communication network is supported, it is sent to described in the first communication network
Media Gateway；
Media Gateway in the first communication network, for determining the facsimile equipment in the first communication network and place
The coding negotiation for the coding mode that facsimile equipment in the second communication network is supported is as a result, and send the coding negotiation result
Facsimile data after the transform coding mode sent to the conversion and control equipment and by the conversion and control equipment of reception
The Media Gateway being sent in the second communication network；
Media Gateway in the second communication network, for being compiled with the Media Gateway in the first communication network
Code is consulted, and the facsimile data from the Media Gateway in the first communication network of reception is sent in the second communication network
Facsimile equipment in network；
Facsimile equipment in the second communication network, the Media Gateway for receiving in the second communication network are sent
Facsimile data.
A kind of facsimile service processing method, this method include：Conversion and control equipment in the first communication network receives
Media Gateway in the first communication network determine on the facsimile equipment in the first communication network and in second
The coding negotiation for the coding mode that facsimile equipment in communication network is supported is as a result, simultaneously
The coding mode that facsimile equipment according to being determined the coding negotiation result in the second communication network is supported
The intersection for the coding mode supported with the facsimile equipment in the first communication network for empty set and
When receiving the facsimile data that the facsimile equipment in the first communication network is sent, by the facsimile data
Coding mode be converted to the coding mode that the facsimile equipment in the second communication network is supported after, be sent to the place
Facsimile equipment in the second communication network.
A kind of conversion and control equipment, in the first communication network, including：
Receiving unit, for receive the first communication network in Media Gateway determine in the first communication network
Facsimile equipment and the coding negotiation of coding mode supported of facsimile equipment in the second communication network as a result, and receiving
The facsimile data that the facsimile equipment being in the first communication network is sent；
Determination unit, for the facsimile equipment branch described in being determined according to the coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode held is supported with the facsimile equipment in the first communication network is empty set；
Converting unit, for receiving the facsimile data of the facsimile equipment transmission in the first communication network
When, the coding mode of the facsimile data is converted into the coding staff that the facsimile equipment in the second communication network supports
Formula；
Transmitting element sets for transformed facsimile data to be sent to the fax in the second communication network
It is standby.
A kind of facsimile equipment, the facsimile equipment include：
Transmitting element, for sending fax number to the Media Gateway of the communication network residing for itself or conversion and control equipment
According to；The conversion and control equipment, is in the first communication network, is determined for the Media Gateway in the first communication network of reception
The coding mode supported on the facsimile equipment in the first communication network and the facsimile equipment in the second communication network
Coding negotiation as a result, and facsimile equipment according to being determined the coding negotiation result in the second communication network support
The intersection for the coding mode that coding mode is supported with the facsimile equipment in the first communication network is empty set and is receiving
During the facsimile data that the facsimile equipment being in the first communication network is sent, the coding mode of the facsimile data is converted to
After the coding mode that the facsimile equipment being in the second communication network is supported, it is sent to described in the second communication network
Facsimile equipment；
Receiving unit, for receiving the coding mode instruction message of conversion and control equipment transmission；
Coding unit encodes facsimile data for the coding instruction message according to reception.
In technical solution of the embodiment of the present invention, due to make use of conversion and control equipment in the first communication network to being in
The coding mode of facsimile equipment in one communication network is converted, and is converted to facsimile equipment in the second communication network
Therefore coding mode, in the case of coding negotiation failure, still is able to carry out being normally carried out for facsimile service, improves fax
The success rate of business.
Description of the drawings
Fig. 1 is one of facsimile service processing system structure diagram in the embodiment of the present invention；
Fig. 2 is facsimile service process flow schematic diagram in the embodiment of the present invention；
Fig. 3 is facsimile service processing system second structural representation in the embodiment of the present invention；
Fig. 4 is that the facsimile equipment of IMS network in the embodiment of the present invention sends facsimile data to the facsimile equipment of PSTN network
When facsimile service processing schematic diagram；
Fig. 5 is that the facsimile equipment of PSTN network in the embodiment of the present invention sends facsimile data to the facsimile equipment of IMS network
When facsimile service processing schematic diagram；
Fig. 6 is the structure diagram that control device is converted in the embodiment of the present invention；
Fig. 7 is the structure diagram of facsimile equipment in the embodiment of the present invention;
Fig. 8 is to carry out test result schematic diagram to interworking function of T.38 and T.30 faxing in the embodiment of the present invention.
Specific embodiment
With reference to each attached drawing to the main realization principle of technical solution of the embodiment of the present invention, specific embodiment and its
Advantageous effect corresponding to reach is set forth in.
As shown in Figure 1, be facsimile service processing system structure diagram in the embodiment of the present invention, including：It is logical in first
Facsimile equipment 11 in communication network, the conversion and control equipment 12 in the first communication network, in the first communication network
Media Gateway 13, the Media Gateway 14 in the second communication network and the facsimile equipment 15 in the second communication network,
In：
Facsimile equipment 11 in the first communication network, for the conversion and control equipment in the first communication network
12 send facsimile data；
Conversion and control equipment 12 in the first communication network, for receiving the media net in the first communication network
13 coding negotiations sent are closed as a result, and determining the facsimile equipment branch in the second communication network according to the coding negotiation result
Hold the intersection for the coding mode that 15 coding mode is supported with the facsimile equipment 11 in the first communication network for empty set and
When receiving the facsimile data that the facsimile equipment 11 in the first communication network is sent, by the coding of the facsimile data
After mode is converted to the coding mode that the facsimile equipment 15 in the second communication network is supported, it is sent to described in the
Media Gateway 13 in one communication network；
Media Gateway 13 in the first communication network, for determining the facsimile equipment 11 in the first communication network
The coding negotiation for the coding mode supported with the facsimile equipment 15 in the second communication network is as a result, and by the coding negotiation knot
After fruit is sent to the conversion and control equipment and the transform coding mode for sending the conversion and control equipment 12 of reception
Facsimile data is sent to the Media Gateway 14 in the second communication network；
Media Gateway 14 in the second communication network, for the Media Gateway 13 in the first communication network into
The facsimile data from the Media Gateway 13 in the first communication network of reception is sent in second by row coding negotiation
Facsimile equipment 15 in communication network；
Facsimile equipment 15 in the second communication network, for receiving the Media Gateway 14 in the second communication network
The facsimile data of transmission.
In embodiments of the present invention, due to make use of conversion and control equipment in the first communication network to being in the first communication
The coding mode of facsimile equipment in network is converted, and is converted to the coding staff of the facsimile equipment in the second communication network
Therefore formula, in the case of coding negotiation failure, still is able to carry out being normally carried out for facsimile service, improves facsimile service
Success rate.
Above-mentioned transaction processing system gives sends facsimile data, place for the facsimile equipment in the first communication network
Facsimile equipment in the second communication network receives the facsimile service processing scheme of facsimile data, preferably, in order to further carry
High-facsimile service success rate, on the basis of above-mentioned facsimile service processing system, the embodiment of the present invention is given in second
Facsimile equipment in communication network sends facsimile data, and the facsimile equipment in the first communication network receives the biography of facsimile data
The facsimile service processing system of true business processing scheme, it is specific as follows：
The facsimile equipment 15 being in the second communication network, is additionally operable to the media net in the second communication network
Close 14 facsimile datas sent；
The Media Gateway 14 being in the second communication network is additionally operable to determine the fax in the first communication network
The coding negotiation for the coding mode that equipment 11 and the facsimile equipment 15 in the second communication network are supported is as a result, and encode this
Negotiation result is sent to the conversion and control equipment 12 and by reception from the facsimile equipment 15 in the second communication network
Facsimile data be sent to the Media Gateway 13 in the first communication network；
The conversion and control equipment 12 is additionally operable to receive coming from for the forwarding of Media Gateway 13 in the first communication network
The coding negotiation of Media Gateway 14 in the second communication network according to determining the coding negotiation result as a result, and be in
The coding mode that facsimile equipment 15 in second communication network is supported is supported with the facsimile equipment 11 in the first communication network
The intersection of coding mode come for empty set and receiving that the Media Gateway 13 in the first communication network forwards
From in the second communication network facsimile equipment 15 send facsimile data when, the coding mode of the facsimile data is converted into institute
After stating the coding mode that the facsimile equipment 11 in the first communication network is supported, it is sent to described in the first communication network
Facsimile equipment 11；
The facsimile equipment 11 being in the first communication network is additionally operable to receive what the conversion and control equipment 12 was sent
Facsimile data.
Further, it is contemplated that the successful execution of facsimile service, after consulting successfully, it is also necessary to and the support of network, it is existing
In reality, T.30 agreement is held since the facsimile service of PSTN is branched, even if coding is assisted successfully, it is fax that can cause negotiation result
In the process all using T.30 agreement, however, due to the IP network delay that may be present of IMS network access side, packet loss and trembling
It moves, and T.30 Protocol Through Network is more demanding, and then carry out facsimile service in the user terminal of PSTN and the user terminal of IMS
When, can cause T.30 facsimile signal lose than more serious, therefore, apply the biography between the IMS network of intercommunication and PSTN network
True service success rate is relatively low, and in order to solve the problems, such as this, on the basis of above-described embodiment, the embodiment of the present invention provides following three
Kind preferred embodiment, specially：
The first preferred embodiment：
The coding mode includes the first coding mode and the second coding mode, is compiled using first coding mode
Laser propagation effect of the data in the first communication network of code is better than using the data that second coding mode is encoded the
Laser propagation effect in one communication network；
The coding mode that the facsimile equipment 11 that is in the first communication network is supported includes the first coding mode and the
Two coding modes, the coding mode that the facsimile equipment 15 being in the second communication network is supported include the second coding mode,
Or including the first coding mode and the second coding mode；
The conversion and control equipment 12 is additionally operable to according to being determined coding negotiation result in the second communication network
The coding mode that the coding mode that facsimile equipment 15 is supported is supported with the facsimile equipment 11 being in the first communication network
Intersection includes the second coding mode, and coding mode instruction message is sent to the facsimile equipment 11 in the first communication network, should
Instruction message indicates that the facsimile equipment 11 being in the first communication network compiles facsimile data using the first coding mode
Code；And when receiving the facsimile data of the facsimile equipment 11 being in the first communication network transmission, by the facsimile data
After coding mode is converted to the second coding mode, the facsimile equipment 11 in the first communication network is sent to.
Second of preferred embodiment：
Laser propagation effect of the data encoded using first coding mode in the first communication network is better than use
Laser propagation effect of the data that second coding mode is encoded in the first communication network；
The conversion and control equipment 12 is additionally operable to the volume supported in the facsimile equipment 11 being in the first communication network
Code mode is the first coding mode and the second coding mode, the volume that the facsimile equipment 15 that is in the second communication network is supported
When code mode is the second coding mode, the facsimile equipment 15 according to being determined coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode of support is supported with the facsimile equipment 11 being in the first communication network is second
Coding mode, and in the forwarding of Media Gateway 13 described in receiving in the first communication network in the second communication network
Facsimile equipment 15 send facsimile data when, after the second coding mode of the facsimile data is converted to the first coding mode,
It is sent to the facsimile equipment 11 in the first communication network.
The third preferred embodiment：
Laser propagation effect of the data encoded using first coding mode in the first communication network is better than use
Laser propagation effect of the data that second coding mode is encoded in the first communication network；
The conversion and control equipment 12 is additionally operable at the facsimile equipment 11 being in the first communication network and the place
When the coding mode that facsimile equipment 15 in the second communication network is supported is the first coding mode and the second coding mode, according to
Coding negotiation result determines that coding mode that the facsimile equipment 15 in the second communication network supports is in the with described
When the intersection for the coding mode that facsimile equipment 11 in one communication network is supported is the first coding mode and the second coding mode, to
Facsimile equipment 15 in the second communication network sends coding mode instruction message, which indicates the second communication network
In facsimile equipment 15 using the first coding mode carry out facsimile data coding；Alternatively, it is in the second communication network to described
In facsimile equipment 15 send coding mode instruction message, which indicates that the fax being in the second communication network is set
Standby 15 carry out the coding of facsimile data using the second coding mode, and are receiving the fax in the second communication network
During the facsimile data that equipment 15 is sent, after the second coding mode of the facsimile data is converted to the first coding mode, it is sent to
The facsimile equipment 11 being in the first communication network.
The facsimile equipment that the first above-mentioned preferred embodiment is directed in the first communication network sends facsimile data, place
Facsimile equipment in the second communication network receives the facsimile service processing scheme of facsimile data, second of preferred embodiment and the 3rd
The facsimile equipment that kind preferred embodiment is directed in the second communication network sends facsimile data, in the first communication network
Facsimile equipment receive facsimile data facsimile service processing scheme.
In the embodiment of the present invention, first communication network can be, but not limited to as IMS network, second communication network
It can be, but not limited to as PSTN.
If the first communication network is IMS network, second communication network is PSTN, then above-mentioned first coding mode can be
T.38, T.30 above-mentioned second coding mode can be.
In the embodiment of the present invention, the conversion and control equipment can be positioned at user and multimedia subsystem, IMS network it
Between session-orient E-Service equipment（Session Border Controller, SBC）.
The SBC is located between IMS access nets and IMS core net, and the sole inlet point of IMS network is accessed as user,
It is responsible for user's access safety, QOS controls and NAT to pass through.
Using SBC as conversion and control equipment considered based on following in the embodiment of the present invention：If individually set up equipment into
T.30, row can improve cost with conversion T.38 and increase network complexity.Since equipment of the core network is to supporting dynamics T.38
It is relatively low, so T.30, T.38 conversion function is not suitable for being arranged in the equipment of core net.SBC be located at access net and core net it
Between, disclosure satisfy that in access net using T.38 protocol code mode, therefore realize on SBC T.30 with T.38 code conversion function
It is optimal scheme.
Assuming that above-mentioned first communication network is IMS network, the second communication network is PSTN network, and the first coding mode is
T.38, T.30 the second coding mode is, below just utilize table（1）And table（2）The scheme of the embodiment of the present invention is carried out conciser
Ground explanation：
Table（1）
Table（2）
Based on facsimile service system shown in FIG. 1, the embodiment of the present invention also proposes a kind of facsimile service processing method, such as schemes
Shown in 2, specific processing step is as follows：
Step 21：Conversion and control equipment in the first communication network receives the media net in the first communication network
Close being supported on the facsimile equipment in the first communication network and the facsimile equipment in the second communication network of determining
The coding negotiation result of coding mode.
The first communication network in the embodiment of the present invention can be, but not limited to as IMS network, the second communication network can with but
It is not limited to PSTN network；Above-mentioned first coding mode can be that T.38, T.30 above-mentioned second coding mode can be；Above-mentioned conversion control
Control equipment can be SBC.
Step 22：Fax of the conversion and control equipment according to being determined the coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode that equipment is supported is supported with the facsimile equipment in the first communication network is empty set.
Step 23：When receiving the facsimile data that the facsimile equipment in the first communication network is sent, by this
After the coding mode of facsimile data is converted to the coding mode that the facsimile equipment in the second communication network is supported, send
To the facsimile equipment being in the second communication network.
Preferably, the coding mode includes the first coding mode and the second coding mode, uses first coding staff
Laser propagation effect of the data that formula is encoded in the first communication network is better than what is encoded using second coding mode
Laser propagation effect of the data in the first communication network；
The coding mode that the facsimile equipment being in the first communication network is supported includes the first coding mode and second
Coding mode, the coding mode that the facsimile equipment that is in the second communication network is supported include the second coding mode or
Including the first coding mode and the second coding mode；
The method further includes：
Facsimile equipment of the conversion and control equipment according to being determined coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode of support is supported with the facsimile equipment being in the first communication network includes second
Coding mode sends coding mode instruction message to the facsimile equipment being in the first communication network, which refers to
Show that the facsimile equipment being in the first communication network encodes facsimile data using the first coding mode；And
When receiving the facsimile data that the facsimile equipment in the first communication network is sent, by the facsimile data
Coding mode be converted to the second coding mode after, be sent to the facsimile equipment in the second communication network.
Preferably, the method further includes：
It is logical in second that the conversion and control equipment receives coming from for the Media Gateway forwarding in the first communication network
Media Gateway in communication network on the facsimile equipment in the first communication network and the biography in the second communication network
The coding negotiation result for the coding mode that true equipment is supported；And
The coding mode that facsimile equipment according to being determined the coding negotiation result in the second communication network is supported
The intersection for the coding mode supported with the facsimile equipment in the first communication network for empty set and
When receiving the facsimile data that the facsimile equipment in the second communication network is sent, by the facsimile data
Coding mode be converted to the coding mode that the facsimile equipment in the first communication network is supported after, be sent to the place
Facsimile equipment in the first communication network.
Preferably, laser propagation effect of the data encoded using first coding mode in the first communication network is excellent
In using the laser propagation effect of data that second coding mode encoded in the first communication network；
It is the first coding mode and second in the coding mode that the facsimile equipment being in the first communication network is supported
Coding mode, it is described when the coding mode that the facsimile equipment being in the second communication network is supported is the second coding mode
Method further includes：
Facsimile equipment of the conversion and control equipment according to being determined coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode of support is supported with the facsimile equipment being in the first communication network is compiled for second
Code mode；And
In the facsimile data that the facsimile equipment in receiving the second communication network is sent, the second of the facsimile data is compiled
After code mode is converted to the first coding mode, the facsimile equipment that is sent in first communication network.
Preferably, laser propagation effect of the data encoded using first coding mode in the first communication network is excellent
In using the laser propagation effect of data that second coding mode encoded in the first communication network；
It is the first coding mode and second in the coding mode that the facsimile equipment being in the first communication network is supported
Coding mode, the coding mode that the facsimile equipment being in the second communication network is supported are compiled for the first coding mode and second
During code mode, the method further includes：
The conversion and control equipment determines that the facsimile equipment in second communication network is supported according to coding negotiation result
Coding mode and first communication network in the intersection of coding mode supported of facsimile equipment for the first coding mode and
Second coding mode；
Facsimile equipment into the second communication network sends coding mode instruction message, the second communication of instruction message instruction
Facsimile equipment in network encodes facsimile data using the first coding mode；
Or
Facsimile equipment into the second communication network sends coding mode instruction message, the second communication of instruction message instruction
Facsimile equipment in network encodes facsimile data using the second coding mode；And
When receiving the facsimile data that the facsimile equipment in the second communication network is sent, by the of the facsimile data
After two coding modes are converted to the first coding mode, the facsimile equipment in the first communication network is sent to.
It is shown in figure 3 to the scheme application of the embodiment of the present invention below to be carried out more in facsimile service processing system
It explains in detail.
When the facsimile equipment in the facsimile equipment and PSTN in IMS network carries out facsimile service, and the fax that support is different
Encoding and decoding, i.e. PSTN use T30, carry out encoding and decoding conversion using SBC at this time so that T.38 and T.30 facsimile signal can be mutual
It is logical.
Fig. 4 and Fig. 5 is the quick-reading flow sheets of facsimile data intercommunication, and the IMS-core portions between SBC and PSTN are omitted
Point.
Signaling process figure when Fig. 4 is the facsimile equipment initiation facsimile service in IMS network, specifically includes following steps：
The first step：Facsimile equipment in IMS network initiates fax INVIT message, and in Session Description Protocol（Session
Descriptive Protocol, SDP）The facsimile coding mode of support is carried in parameter（T.38）, IMS is sent to by SBC
Core net and PSTN.
Second step：IMS core net carries out coding negotiation with PSTN according to the prior art, if called facsimile equipment is supported
T.38, then T.38 parameter is carried in SDP message in 200OK message.SBC judges that coding mode is consistent with caller, without compiling
Code conversion.If called only support T.30, to carry T.30 parameter in SDP message in 200OK message.SBC judges coding staff
Formula is inconsistent with caller, will start code conversion（It is called situation about only supporting T.30 in Fig. 4）.
3rd step：It is switched to data channel and carries out fax data transmission, using T.38 between IMS facsimile equipments and SBC
Agreement carries out data transmission, and T.38 facsimile data carries out code conversion as T.30 data after entering SBC, is sent in SBC to IMS core
It is transmitted between net and PSTN user using T.30 data.
Signaling process figure when Fig. 5 is the facsimile equipment initiation facsimile service in PSTN, specifically includes following steps：
The first step：Facsimile equipment in PSTN network initiates fax INVIT message, and carries what is supported in SDP parameters
Facsimile coding mode（T.30）, IMS core net and PSTN are sent to by SBC.
Second step：PSTN carries out coding negotiation with IMS core net according to the prior art, if called facsimile equipment is supported
T.30, then T.30 parameter is carried in SDP message in 200OK message.SBC judges that coding mode is consistent with caller, without compiling
Code conversion.If called only support T.38, to carry T.38 parameter in SDP message in 200OK message.SBC judges coding staff
Formula is inconsistent with caller, will start code conversion.（It is called situation about only supporting T.38 in Fig. 5）.
3rd step：It is switched to data channel and carries out fax data transmission, in PSTN facsimile equipments and IMS core net and SBC
Between carried out data transmission using T.30 agreement, T.30 facsimile data, which enters after SBC, carries out code conversion as T.38 data,
SBC is sent between IMS facsimile equipments and is transmitted using T.38 data.
Correspondingly, the embodiment of the present invention also provides a kind of conversion and control equipment, in the first communication network, such as Fig. 6 institutes
Show, including receiving unit 61, determination unit 62, converting unit 63 and transmitting element 64, wherein：
Receiving unit 61, for receive the first communication network in Media Gateway determine in the first communication network
In the coding negotiation of coding mode supported of facsimile equipment and facsimile equipment in the second communication network as a result, and connecing
Receive the facsimile data that the facsimile equipment in the first communication network is sent；
Determination unit 62, for the facsimile equipment described in being determined according to the coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode of support is supported with the facsimile equipment in the first communication network is empty set；
Converting unit 63, for receiving the facsimile data of the facsimile equipment transmission in the first communication network
When, the coding mode of the facsimile data is converted into the coding staff that the facsimile equipment in the second communication network supports
Formula；
Transmitting element 64 sets for transformed facsimile data to be sent to the fax in the second communication network
It is standby.
Preferably, the coding mode includes the first coding mode and the second coding mode, uses first coding staff
Laser propagation effect of the data that formula is encoded in the first communication network is better than what is encoded using second coding mode
Laser propagation effect of the data in the first communication network；
The coding mode that facsimile equipment in first communication network is supported includes the first coding mode and the second coding
Mode, the coding mode that the facsimile equipment in second communication network is supported include the second coding mode or including first
Coding mode and the second coding mode；
The determination unit 62 is additionally operable to determine the facsimile equipment in second communication network according to coding negotiation result
The intersection for the coding mode that the coding mode of support is supported with the facsimile equipment in first communication network includes the second coding
Mode；
The conversion and control equipment further includes：Indicating member 65, for the facsimile equipment in the first communication network
Coding mode instruction message is sent, facsimile equipment of the instruction message instruction in the first communication network uses the first coding staff
Formula encodes facsimile data；
The converting unit 63 is additionally operable to receiving the fax number of the transmission of the facsimile equipment in the first communication network
According to when, after the coding mode of the facsimile data is converted to the second coding mode, be sent to described in the second communication network
Facsimile equipment.
Preferably, the receiving unit 61 is additionally operable to receive coming for the Media Gateway forwarding in the first communication network
It is logical on the facsimile equipment in the first communication network and in second from the Media Gateway in the second communication network
The coding negotiation for the coding mode that facsimile equipment in communication network is supported is as a result, receive the biography in the second communication network
The facsimile data that true equipment is sent；
The determination unit 62 is additionally operable to the biography in the second communication network according to being determined the coding negotiation result
The intersection for the coding mode that the coding mode that true equipment is supported is supported with the facsimile equipment in the first communication network is empty set；
The converting unit 63 is additionally operable to receiving the biography of the facsimile equipment transmission in the second communication network
During true data, the coding mode of the facsimile data is converted to the volume of the facsimile equipment support in the first communication network
Code mode；
The transmitting element 64 is additionally operable to transformed facsimile data being sent to described in the first communication network
Facsimile equipment.
Preferably, laser propagation effect of the data encoded using first coding mode in the first communication network is excellent
In using the laser propagation effect of data that second coding mode encoded in the first communication network；
The determination unit 62 is additionally operable to the coding mode supported in the facsimile equipment being in the first communication network
For the first coding mode and the second coding mode, the coding mode that the facsimile equipment being in the second communication network is supported is
During the second coding mode, the coding of the facsimile equipment support according to being determined coding negotiation result in the second communication network
The intersection for the coding mode that mode is supported with the facsimile equipment being in the first communication network is the second coding mode；
The converting unit 63 is additionally operable to receiving the biography of the facsimile equipment transmission in the second communication network
During true data, the second coding mode of the facsimile data is converted into the first coding mode.
Preferably, laser propagation effect of the data encoded using first coding mode in the first communication network is excellent
In using the laser propagation effect of data that second coding mode encoded in the first communication network；
The determination unit 62 is additionally operable to the coding mode supported in the facsimile equipment being in the first communication network
For the first coding mode and the second coding mode, the coding mode that the facsimile equipment being in the second communication network is supported is
When the first coding mode and the second coding mode, the fax according to being determined coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode that equipment is supported is supported with the facsimile equipment that is in the first communication network is the
One coding mode and the second coding mode；
The conversion and control equipment further includes：Indicating member 65, for the facsimile equipment in the second communication network
Coding mode instruction message is sent, which indicates that the facsimile equipment being in the second communication network uses the first coding
Mode encodes facsimile data；Or the transmission of facsimile data is carried out using the second coding mode；
The converting unit 63 is additionally operable to send coding to the facsimile equipment in the second communication network in indicating member
Mode instruction message, the instruction message indicate the facsimile equipment being in the second communication network using the second coding mode to passing
When true data is encoded, when receiving the facsimile data that the facsimile equipment in the second communication network is sent, this is passed
After second coding mode of true data is converted to the first coding mode, it is sent to the fax in the first communication network and sets
It is standby.
Correspondingly, also a kind of facsimile equipment of the embodiment of the present invention, structure diagram is as shown in fig. 7, the facsimile equipment
Including：
Transmitting element 71, for sending fax number to the Media Gateway of the communication network residing for itself or conversion and control equipment
According to；The conversion and control equipment, is in the first communication network, is determined for the Media Gateway in the first communication network of reception
The coding mode supported on the facsimile equipment in the first communication network and the facsimile equipment in the second communication network
Coding negotiation as a result, and facsimile equipment according to being determined the coding negotiation result in the second communication network support
The intersection for the coding mode that coding mode is supported with the facsimile equipment in the first communication network is empty set and is receiving
During the facsimile data that the facsimile equipment being in the first communication network is sent, the coding mode of the facsimile data is converted to
After the coding mode that the facsimile equipment being in the second communication network is supported, it is sent to described in the second communication network
Facsimile equipment；
Receiving unit 72, for receiving the coding mode instruction message of conversion and control equipment transmission；
Coding unit 73 encodes facsimile data for the coding instruction message according to reception.
The present invention application in the ims network, when in IMS network T.38 fax with PSTN T.30 fax intercommunication when, in IMS
Access side carries out forced coding conversion using T.38 faxing, by SBC, is faxed in IMS core net and PSTN using T30.Due to
T.38 fax relay provides powerful redundancy scheme, preferable to the tolerance of network, and second-rate situation is netted in IMS accesses
Under remain able to maintain high fax success rate, can be substantially improved compared with T.30 fax success rate.
Interworking function of T.38 and T.30 faxing is tested under different Network status, the network scenarios in following 5
In be tested, as a result as shown in following table (3) and Fig. 8：
Table (3)
It can draw：In IMS network and the scene of PSTN network intercommunication, because being T.30 not optional in PSTN network
It selects, so the success rate of fax in the case where network environment is poor, can be promoted using T.38 fax in an ip network, very
Improve user in big degree to perceive.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (20)
1. a kind of facsimile service processing system, which is characterized in that the system comprises：
Facsimile equipment in the first communication network passes for being sent to the conversion and control equipment in the first communication network
True data；
Conversion and control equipment in the first communication network, the Media Gateway for receiving in the first communication network are sent
Coding negotiation as a result, and determining the coding that the facsimile equipment in the second communication network supports according to the coding negotiation result
The intersection for the coding mode that mode is supported with the facsimile equipment in the first communication network is described for empty set and receiving
During the facsimile data that the facsimile equipment in the first communication network is sent, the coding mode of the facsimile data is converted to described
After the coding mode that facsimile equipment in the second communication network is supported, the matchmaker in the first communication network is sent to
Body gateway；
Media Gateway in the first communication network, for determining facsimile equipment in the first communication network and in the
The coding negotiation for the coding mode that facsimile equipment in two communication networks is supported by the coding negotiation result as a result, and be sent to institute
The facsimile data after conversion and control equipment and the transform coding mode for sending the conversion and control equipment of reception is stated to send
To the Media Gateway in the second communication network；
Media Gateway in the second communication network, for carrying out coding association with the Media Gateway in the first communication network
The facsimile data from the Media Gateway in the first communication network of reception is sent in the second communication network by business
Facsimile equipment；
Facsimile equipment in the second communication network, the biography that the Media Gateway for receiving in the second communication network is sent
True data.
2. facsimile service processing system as described in claim 1, which is characterized in that coding mode include the first coding mode and
Second coding mode, laser propagation effect of the data encoded using first coding mode in the first communication network are better than
Laser propagation effect of the data encoded using second coding mode in the first communication network；
The coding mode that the facsimile equipment being in the first communication network is supported includes the first coding mode and the second coding
Mode, the coding mode that the facsimile equipment that is in the second communication network is supported include the second coding mode or including
First coding mode and the second coding mode；
The conversion and control equipment is additionally operable to the fax according to being determined coding negotiation result in the second communication network and sets
The intersection for the coding mode that the standby coding mode supported is supported with the facsimile equipment being in the first communication network includes the
Two coding modes send coding mode instruction message, instruction message instruction to the facsimile equipment in the first communication network
The facsimile equipment being in the first communication network encodes facsimile data using the first coding mode；And receiving this
During the facsimile data that the facsimile equipment in the first communication network is sent, the coding mode of the facsimile data is converted to second
After coding mode, the facsimile equipment in the first communication network is sent to.
3. facsimile service processing system as described in claim 1, which is characterized in that the biography being in the second communication network
True equipment is additionally operable to send facsimile data to the Media Gateway in the second communication network；
The Media Gateway being in the second communication network, the facsimile equipment for being additionally operable to determine in the first communication network and
The coding negotiation for the coding mode that facsimile equipment in the second communication network is supported is as a result, and send out the coding negotiation result
It gives the conversion and control equipment and sends the facsimile data from the facsimile equipment in the second communication network of reception
To the Media Gateway in the first communication network；
The conversion and control equipment is additionally operable to receive coming from second for the Media Gateway forwarding in the first communication network
The coding negotiation of Media Gateway in communication network is as a result, and in the second communication network according to being determined the coding negotiation result
The friendship for the coding mode that the coding mode that facsimile equipment in network is supported is supported with the facsimile equipment in the first communication network
Integrate as empty set and be in the second communication network receiving the coming from for Media Gateway forwarding in the first communication network
During the facsimile data that the facsimile equipment of network is sent, the coding mode of the facsimile data is converted to described in the first communication network
In the coding mode supported of facsimile equipment after, be sent to the facsimile equipment in the first communication network；
The facsimile equipment being in the first communication network is additionally operable to receive the fax number that the conversion and control equipment is sent
According to.
4. facsimile service processing system as claimed in claim 3, which is characterized in that encoded using the first coding mode
Laser propagation effect of the data in the first communication network is better than using the data that the second coding mode is encoded in the first communication network
Laser propagation effect in network；
The conversion and control equipment, be additionally operable to be in the coding mode that the facsimile equipment that is in the first communication network is supported
First coding mode and the second coding mode, the coding mode that the facsimile equipment that is in the second communication network is supported are the
During two coding modes, the coding staff of the facsimile equipment support according to being determined coding negotiation result in the second communication network
The intersection for the coding mode that formula is supported with the facsimile equipment being in the first communication network is the second coding mode, and is being connect
Receive the transmission of the facsimile equipment in the second communication network of the Media Gateway forwarding in the first communication network
During facsimile data, after the second coding mode of the facsimile data is converted to the first coding mode, it is sent to described in first
Facsimile equipment in communication network.
5. facsimile service processing system as claimed in claim 3, which is characterized in that encoded using the first coding mode
Laser propagation effect of the data in the first communication network is better than using the data that the second coding mode is encoded in the first communication network
Laser propagation effect in network；
The conversion and control equipment is additionally operable in the facsimile equipment being in the first communication network and described to be in second logical
When the coding mode that facsimile equipment in communication network is supported is the first coding mode and the second coding mode, according to coding negotiation knot
Fruit determines that the coding mode that the facsimile equipment in the second communication network is supported is in described in the first communication network
Facsimile equipment support coding mode intersection be the first coding mode and the second coding mode when, in the second communication network
Facsimile equipment in network sends coding mode instruction message, which indicates that the facsimile equipment in the second communication network uses
First coding mode carries out the coding of facsimile data；It is compiled alternatively, being sent to the facsimile equipment being in the second communication network
Code mode instruction message, the instruction message indicate the facsimile equipment be in the second communication network use the second coding mode into
The coding of row facsimile data, and when receiving the facsimile data that the facsimile equipment in the second communication network is sent,
After second coding mode of the facsimile data is converted to the first coding mode, it is sent to described in the first communication network
Facsimile equipment.
6. the facsimile service processing system as described in claim 1-5 is any, which is characterized in that first communication network is more
Media subsystem IMS network, second communication network are public switched telephone network PSTN.
7. the facsimile service processing system as described in claim 1-5 is any, which is characterized in that the conversion and control equipment is position
Session-orient E-Service equipment SBC between user and multimedia subsystem, IMS network.
8. a kind of facsimile service processing method, which is characterized in that including：
Conversion and control equipment in the first communication network receives the pass that the Media Gateway in the first communication network determines
In the coding mode that the facsimile equipment in the first communication network and the facsimile equipment in the second communication network are supported
Coding negotiation is as a result, simultaneously
The coding mode and place that facsimile equipment according to being determined the coding negotiation result in the second communication network is supported
The intersection for the coding mode that facsimile equipment in the first communication network is supported for empty set and
When receiving the facsimile data that the facsimile equipment in the first communication network is sent, by the volume of the facsimile data
After code mode is converted to the coding mode that the facsimile equipment in the second communication network is supported, it is sent to described in the
Facsimile equipment in two communication networks.
9. facsimile service processing method as claimed in claim 8, which is characterized in that coding mode include the first coding mode and
Second coding mode, laser propagation effect of the data encoded using first coding mode in the first communication network are better than
Laser propagation effect of the data encoded using second coding mode in the first communication network；
The coding mode that the facsimile equipment being in the first communication network is supported includes the first coding mode and the second coding
Mode, the coding mode that the facsimile equipment that is in the second communication network is supported include the second coding mode or including
First coding mode and the second coding mode；
The method further includes：
Facsimile equipment of the conversion and control equipment according to being determined coding negotiation result in the second communication network is supported
The intersection of coding mode supported with the facsimile equipment that is in the first communication network of coding mode include the second coding
Mode sends coding mode instruction message to the facsimile equipment being in the first communication network, and instruction message instruction should
Facsimile equipment in the first communication network encodes facsimile data using the first coding mode；And
When receiving the facsimile data that the facsimile equipment in the first communication network is sent, by the volume of the facsimile data
After code mode is converted to the second coding mode, the facsimile equipment in the second communication network is sent to.
10. facsimile service processing method as claimed in claim 8, which is characterized in that the method further includes：
The coming from for Media Gateway forwarding that the conversion and control equipment is received in the first communication network is in the second communication network
Media Gateway in network is set on the facsimile equipment in the first communication network and the fax in the second communication network
The coding negotiation result of the standby coding mode supported；And
The coding mode and place that facsimile equipment according to being determined the coding negotiation result in the second communication network is supported
The intersection for the coding mode that facsimile equipment in the first communication network is supported for empty set and
When receiving the facsimile data that the facsimile equipment in the second communication network is sent, by the volume of the facsimile data
After code mode is converted to the coding mode that the facsimile equipment in the first communication network is supported, it is sent to described in the
Facsimile equipment in one communication network.
11. facsimile service processing method as claimed in claim 10, which is characterized in that encoded using the first coding mode
Laser propagation effect of the data in the first communication network be better than using the data that the second coding mode is encoded in the first communication
Laser propagation effect in network；
It is the first coding mode and the second coding in the coding mode that the facsimile equipment being in the first communication network is supported
Mode, when the coding mode that the facsimile equipment being in the second communication network is supported is the second coding mode, the method
It further includes：
Facsimile equipment of the conversion and control equipment according to being determined coding negotiation result in the second communication network is supported
The intersection of coding mode supported with the facsimile equipment that is in the first communication network of coding mode be the second coding staff
Formula；And
In the facsimile data that the facsimile equipment in receiving the second communication network is sent, by the second coding staff of the facsimile data
After formula is converted to the first coding mode, the facsimile equipment that is sent in first communication network.
12. facsimile service processing method as claimed in claim 10, which is characterized in that encoded using the first coding mode
Laser propagation effect of the data in the first communication network be better than using the data that the second coding mode is encoded in the first communication
Laser propagation effect in network；
It is the first coding mode and the second coding in the coding mode that the facsimile equipment being in the first communication network is supported
Mode, the coding mode that the facsimile equipment being in the second communication network is supported is the first coding mode and the second coding staff
During formula, the method further includes：
The conversion and control equipment determines the volume that the facsimile equipment in second communication network is supported according to coding negotiation result
The intersection for the coding mode that code mode is supported with the facsimile equipment in first communication network is the first coding mode and second
Coding mode；
Facsimile equipment into the second communication network sends coding mode instruction message, which indicates the second communication network
In facsimile equipment facsimile data is encoded using the first coding mode；
Or
Facsimile equipment into the second communication network sends coding mode instruction message, which indicates the second communication network
In facsimile equipment facsimile data is encoded using the second coding mode；And
When receiving the facsimile data that the facsimile equipment in the second communication network is sent, the second of the facsimile data is compiled
After code mode is converted to the first coding mode, the facsimile equipment in the first communication network is sent to.
13. the facsimile service processing method as described in claim 8-12 is any, which is characterized in that first communication network is
Multimedia subsystem, IMS network, second communication network are public switched telephone network PSTN.
14. the facsimile service processing method as described in claim 8-12 is any, which is characterized in that the conversion and control equipment is
Session-orient E-Service equipment SBC between user and multimedia subsystem, IMS network.
15. a kind of conversion and control equipment, in the first communication network, which is characterized in that including：
Receiving unit, for receive the first communication network in Media Gateway determine on the biography in the first communication network
The coding negotiation for the coding mode that true equipment and the facsimile equipment in the second communication network are supported is as a result, and described in reception
The facsimile data that facsimile equipment in the first communication network is sent；
Determination unit is supported for the facsimile equipment described in being determined according to the coding negotiation result in the second communication network
The intersection for the coding mode that coding mode is supported with the facsimile equipment in the first communication network is empty set；
Converting unit, for when receiving the facsimile data that the facsimile equipment in the first communication network is sent, inciting somebody to action
The coding mode of the facsimile data is converted to the coding mode that the facsimile equipment in the second communication network is supported；
Transmitting element, for transformed facsimile data to be sent to the facsimile equipment in the second communication network.
16. conversion and control equipment as claimed in claim 15, which is characterized in that coding mode includes the first coding mode and the
Two coding modes, laser propagation effect of the data encoded using first coding mode in the first communication network are better than making
Laser propagation effect of the data encoded with second coding mode in the first communication network；
The coding mode that facsimile equipment in first communication network is supported includes the first coding mode and the second coding mode,
The coding mode that facsimile equipment in second communication network is supported includes the second coding mode or including the first coding staff
Formula and the second coding mode；
The determination unit is additionally operable to determine what the facsimile equipment in second communication network was supported according to coding negotiation result
The intersection for the coding mode that coding mode is supported with the facsimile equipment in first communication network includes the second coding mode；
The conversion and control equipment further includes：Indicating member is compiled for being sent to the facsimile equipment in the first communication network
Code mode instruction message, facsimile equipment of the instruction message instruction in the first communication network is using the first coding mode to passing
True data is encoded；
The converting unit is additionally operable to when receiving the facsimile data that the facsimile equipment in the first communication network is sent,
After the coding mode of the facsimile data is converted to the second coding mode, the fax in the second communication network is sent to
Equipment.
17. conversion and control equipment as claimed in claim 15, which is characterized in that the receiving unit is additionally operable to reception and is in
In first communication network Media Gateway forwarding from the Media Gateway in the second communication network in first
The coding negotiation knot for the coding mode that facsimile equipment in communication network and the facsimile equipment in the second communication network are supported
Fruit receives the facsimile data that the facsimile equipment in the second communication network is sent；
The determination unit is additionally operable to the facsimile equipment in the second communication network according to being determined the coding negotiation result
The intersection for the coding mode that the coding mode of support is supported with the facsimile equipment in the first communication network is empty set；
The converting unit is additionally operable to receiving the facsimile data of the facsimile equipment transmission in the second communication network
When, the coding mode of the facsimile data is converted into the coding staff that the facsimile equipment in the first communication network supports
Formula；
The transmitting element, is additionally operable to transformed facsimile data being sent to the fax in the first communication network and sets
It is standby.
18. conversion and control equipment as claimed in claim 17, which is characterized in that the number encoded using the first coding mode
It is better than according to the laser propagation effect in the first communication network using the data that the second coding mode is encoded in the first communication network
In laser propagation effect；
The determination unit, it is first to be additionally operable in the coding mode that the facsimile equipment being in the first communication network is supported
Coding mode and the second coding mode, the coding mode that the facsimile equipment being in the second communication network is supported are compiled for second
During code mode, coding mode that the facsimile equipment according to coding negotiation result determines in the second communication network is supported and
The intersection for the coding mode that the facsimile equipment being in the first communication network is supported is the second coding mode；
The converting unit is additionally operable to receiving the facsimile data of the facsimile equipment transmission in the second communication network
When, the second coding mode of the facsimile data is converted into the first coding mode.
19. conversion and control equipment as claimed in claim 17, which is characterized in that the number encoded using the first coding mode
It is better than according to the laser propagation effect in the first communication network using the data that the second coding mode is encoded in the first communication network
In laser propagation effect；
The determination unit, it is first to be additionally operable in the coding mode that the facsimile equipment being in the first communication network is supported
Coding mode and the second coding mode, the coding mode that the facsimile equipment being in the second communication network is supported are compiled for first
When code mode and the second coding mode, the facsimile equipment branch according to being determined coding negotiation result in the second communication network
The intersection for the coding mode that the coding mode held is supported with the facsimile equipment being in the first communication network is the first coding
Mode and the second coding mode；
The conversion and control equipment further includes：Indicating member is compiled for being sent to the facsimile equipment in the second communication network
Code mode instruction message, the instruction message indicate that the facsimile equipment being in the second communication network uses the first coding mode pair
Facsimile data is encoded；Or the transmission of facsimile data is carried out using the second coding mode；
The converting unit is additionally operable to the facsimile equipment transmission coding mode in the second communication network refer in indicating member
Show message, which indicates the facsimile equipment being in the second communication network using the second coding mode to facsimile data
When being encoded, when receiving the facsimile data that the facsimile equipment in the second communication network is sent, by the facsimile data
The second coding mode be converted to the first coding mode after, be sent to the facsimile equipment in the first communication network.
20. a kind of facsimile equipment, which is characterized in that the facsimile equipment includes：
Transmitting element, for sending facsimile data to the Media Gateway of the communication network residing for itself or conversion and control equipment；Institute
State conversion and control equipment, be in the first communication network, receive the first communication network in Media Gateway determine in
The coding association for the coding mode that facsimile equipment in first communication network and the facsimile equipment in the second communication network are supported
Business is as a result, and the coding mode supported of the facsimile equipment according to being determined the coding negotiation result in the second communication network
The intersection for the coding mode supported with the facsimile equipment in the first communication network is empty set and is receiving described be in
During the facsimile data that the facsimile equipment in the first communication network is sent, the coding mode of the facsimile data is converted into described be in
After the coding mode that facsimile equipment in second communication network is supported, it is sent to the fax in the second communication network and sets
It is standby；
Receiving unit, for receiving the coding mode instruction message of conversion and control equipment transmission；
Coding unit encodes facsimile data for the coding instruction message according to reception.
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| CN107547483B (en) * | 2016-06-28 | 2020-10-09 | 华为技术有限公司 | Method for accurate fax negotiation and access gateway |
| CN111565257B (en) * | 2020-04-14 | 2022-11-08 | 深圳震有科技股份有限公司 | Transcoding method, device, system and medium of fax terminal |
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| CN103023899A (en) * | 2012-12-05 | 2013-04-03 | 广东佳和通信技术有限公司 | Method for multiple data service support in VoIP system |
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