CN101969437B - IP fax method and gateway device - Google Patents
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- CN101969437B CN101969437B CN 201010508425 CN201010508425A CN101969437B CN 101969437 B CN101969437 B CN 101969437B CN 201010508425 CN201010508425 CN 201010508425 CN 201010508425 A CN201010508425 A CN 201010508425A CN 101969437 B CN101969437 B CN 101969437B
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Abstract
The invention discloses an IP fax method and a gateway device, wherein the IP fax method comprises the following steps: step A, the originating gateway caches a calling request message sent to the terminating gateway; step B, when a calling response message sent by the terminating gateway identifies that the terminating fax machine is not available, the originating gateway sends the cached calling request message to the fax server, sends the fax message to the fax server when the calling response message of the fax server identifies that the receiving of fax is supported, and receives the fax message by the fax server; and step C, the fax server stores the fax message and sends the fax message to the terminating fax machine according to a preset strategy. In the invention, when the terminating fax machine is not available, the sending fax machine can still send the fax message successfully, and the fax message can be sent from the fax server to the terminating fax machine subsequently.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of Fax over IP method and gateway device.
Background technology
Existing facsimile art comprises common facsimile art and IP (Internet Protocol, Internet Protocol) facsimile art.
The applied network scenarios of common facsimile art connects by PSTN (Public Switched Telephone Network, public telephone switching network) between the facsimile machine (FAX1 and FAX2) as shown in Figure 1.When FAX1 sent fax to FAX2, FAX1 is dial-up FAX2 at first, can send fax to FAX2 after the response that obtains FAX2, if FAX2 unavailable (for example FAX2 is used by other faxes) then can't send fax.Wherein, the facsimile message that sends by PSTN is message T.30.T.30 Group 3 Facsimile Equipment detailed description and regulation have all been made at signal format, control signal and error correcting system that the online communication process of plain old telephone, signal post adopt.
The applied network scenarios of Fax over IP technology as shown in Figure 2, comprise facsimile machine (FAX1 and FAX2), gateway (GW1 and GW2), wherein connect by PSTN between facsimile machine and the gateway, (being between GW1 and the GW2) connects by IP network between gateway and the gateway.Send fax take FAX1 to FAX2 and be example, FAX1 T.30 message is sent to GW1.After GW1 received that purpose facsimile machine that FAX1 sends is the signal of FAX2, T.30 T.38 message was packaged into that message sends to GW2.GW2 receives and explains T.38 message, and will issue FAX2 after the facsimile signal recovery, thereby has formed a virtual T.30 fax passage between FAX1 and FAX2.Wherein gateway plays the effect to message conversion transparent transmission in the message transmittance process, himself does not produce any message T.30.
In above-mentioned common facsimile art or Fax over IP technology, when FAX2 is unavailable, is receiving faxes or making a phone call etc. such as FAX2, FAX1 can't send fax, and can only again call out later.
Summary of the invention
The invention provides a kind of Fax over IP method and gateway device, so that when the receiving end facsimile machine is unavailable, send facsimile machine and still can successfully send facsimile message, and this facsimile message can sends to the receiving end facsimile machine by Fax Server is follow-up.
The invention provides a kind of Fax over IP method, be applied to comprise and make a start in the system of facsimile machine, the gateway of making a start, receiving end gateway and receiving end facsimile machine, the described gateway of making a start is before sending facsimile message to described receiving end gateway, send call request message to described receiving end gateway, further comprise Fax Server in the applied system of the method; The method comprises:
Steps A, the call request message that the described gateway buffer memory of making a start sends to described receiving end gateway;
Step B, when the described receiving end facsimile machine of call message identifier of described receiving end gateway transmission is unavailable, the described gateway of making a start sends the described call request message of buffer memory to described Fax Server, and when the call message identifier support of described Fax Server is received faxes, send facsimile message to described Fax Server, receive described facsimile message by described Fax Server;
Step C, described Fax Server is stored described facsimile message, sends described facsimile message according to preset strategy to described receiving end facsimile machine.
Step B comprises:
The described gateway of making a start receives the redirection message that described receiving end gateway sends, and sends described call request message according to the IP address of the described Fax Server that carries in the described redirection message to described Fax Server;
When described Fax Server support received described fax, the described gateway of making a start sent described facsimile message to described Fax Server, receive described facsimile message by described Fax Server.
Steps A comprises:
The described gateway of making a start is searched the Fax Server corresponding with described receiving end facsimile machine or receiving end gateway according to the corresponding relation of pre-configured facsimile machine or gateway and Fax Server, sends described call request message to the Fax Server that finds;
When described Fax Server support received described fax, the described gateway of making a start sent described facsimile message to described Fax Server, receive described facsimile message by described Fax Server.
Described Fax Server configuration fax mailbox is used for storing the facsimile message of corresponding facsimile machine, and the number of described fax mailbox is corresponding with the number of facsimile machine;
Describedly send described call request message to Fax Server and comprise: in described call request message, carry the number of described receiving end facsimile machine, for the described Fax Server fax mailbox corresponding according to the number searching of described receiving end facsimile machine.
Also comprise: receive the described receiving end facsimile machine of sign can with or after the described gateway of making a start sends described call request message to Fax Server, the described call request message of the described gateway deletion buffer memory of making a start.
Step C comprises:
Described Fax Server sends described facsimile message according to predetermined period to described receiving end gateway;
After described facsimile message sends successfully, the described facsimile message of described Fax Server deletion storage.
A kind of gateway device, be applied to comprise and make a start in the system of facsimile machine, the gateway of making a start, receiving end gateway and receiving end facsimile machine, the described gateway of making a start is before sending facsimile message to described receiving end gateway, send call request message to described receiving end gateway, also comprise Fax Server in the described system, when gateway was made a start in described gateway device conduct, described gateway device comprised:
Receiving element, for the facsimile message that receives the described facsimile machine of making a start, and the call message of described receiving end gateway and described Fax Server;
Transmitting element, be connected with described receiving element, be used for when the described receiving end facsimile machine of the call message identifier of described receiving end gateway is unavailable, the described call request message of buffer memory is sent to described Fax Server, and when the call message identifier support of described Fax Server is received faxes, send facsimile message to described Fax Server, receive described facsimile message by described Fax Server;
Memory cell is connected with transmitting element with described receiving element, is used for the call request message that buffer memory sends to described receiving end gateway.
Described receiving element also is used for: receive the redirection message that described receiving end gateway sends;
Described transmitting element also is used for: the IP address according to the described Fax Server that carries in the described redirection message sends described call request message to described Fax Server; When described Fax Server support receives described fax, described facsimile message is sent to described Fax Server, receive described facsimile message by described Fax Server.
Also comprise:
Search the unit, be used for the corresponding relation according to pre-configured facsimile machine or gateway and Fax Server, search the Fax Server corresponding with described receiving end facsimile machine or receiving end gateway;
Described transmitting element also is used for: search the Fax Server that the unit finds and send described call request message to described, when described Fax Server support receives described fax, described facsimile message is sent to described Fax Server, receive described facsimile message by described Fax Server.
Described memory cell also is used for: after described gateway device is received the sign call message that can use of described receiving end facsimile machine or is sent described call request message to described Fax Server, and the described call request message of deletion buffer memory.
When described gateway device during as the receiving end gateway, described transmitting element also is used for: when the receiving end facsimile machine is unavailable, send the disabled call message of sign receiving end facsimile machine to the gateway of making a start, and send the redirection message of the IP address of carrying Fax Server to the gateway of making a start.
Described transmitting element also is used for: the number that carries described receiving end facsimile machine in the call request message that sends to described Fax Server.
Compared with prior art, the present invention has the following advantages at least:
Among the present invention, when the receiving end facsimile machine is unavailable, the facsimile machine of making a start is sent to Fax Server with facsimile message, by Fax Server storage facsimile message, and to receiving end facsimile machine re-transmission facsimile message, thereby when the receiving end facsimile machine is unavailable, still can finish the facsimile message process of transmitting of the facsimile machine of making a start, and since Fax Server stored facsimile message, can the receiving end facsimile machine can with after facsimile message is sent to the receiving end facsimile machine.
Description of drawings
Fig. 1 is the applied network scenarios schematic diagram of common facsimile art in the prior art;
Fig. 2 is the applied network scenarios schematic diagram of Fax over IP technology in the prior art;
Fig. 3 is Fax over IP system schematic provided by the invention;
Fig. 4 is the schematic flow sheet of Fax over IP method provided by the invention;
Fig. 5 is the structural representation of gateway device provided by the invention.
Embodiment
Among the present invention, the Fax over IP system comprises the facsimile machine of making a start, the gateway of making a start, receiving end gateway, receiving end facsimile machine and Fax Server.When the receiving end facsimile machine was unavailable, the gateway of making a start sent facsimile message to Fax Server, stored facsimile message by Fax Server, and retransmitted facsimile message according to preset strategy to the receiving end gateway.
Fax over IP provided by the invention system comprises the facsimile machine of making a start, the gateway of making a start, receiving end gateway, receiving end facsimile machine and Fax Server as shown in Figure 3.The Fax over IP method that is applied to this Fax over IP system provided by the invention may further comprise the steps as shown in Figure 4:
Step 401, the facsimile machine of making a start is initiated audio call, and the gateway of making a start is converted to call request message with this audio call and sends to the receiving end gateway, and preserves this call request message.
Step 402, the receiving end gateway receives call request message, call request message is converted to audio call is transmitted to the receiving end facsimile machine.If the receiving end facsimile machine can be used, execution in step 403; If the receiving end facsimile machine is unavailable, execution in step 404.
Step 403, the receiving end gateway sends the available call message of fax to the gateway of making a start, and be that audio call response is sent to the facsimile machine of making a start again with the call message conversion by the gateway of making a start, make a start facsimile machine and receiving end facsimile machine carries out facsimile message and send to consult, and makes a start facsimile machine to receiving end facsimile machine transmission facsimile message after consulting successfully.
Concrete, facsimile message sends the negotiations process of negotiations process for carrying out according to the agreement of supporting facsimile message, and for example facsimile machine sends that T.30 message is to gateway, and gateway T.30 message is converted to T.38 message, carry out T.38 negotiations process, carry out the transmission of facsimile message after this process is consulted successfully.
In this step, the gateway of making a start also needs the call request message of preservation in the delete step 401.
Step 404, the receiving end gateway sends the disabled call message of fax to the gateway of making a start.
Step 405, make a start gateway according to the Fax Server corresponding with the receiving end gateway that disposes, call request message is resend to Fax Server, Fax Server receives this calling and sends the call of supporting this fax to the gateway of making a start, carry out facsimile negotiation with the gateway of making a start, receive the facsimile message that the gateway of making a start sends.
The call request message that the gateway buffer memory of making a start sends to the receiving end gateway.The gateway of making a start also disposes the corresponding relation of Fax Server and receiving end facsimile machine or gateway, when the call message identifier receiving end facsimile machine of receiving end gateway transmission is unavailable, the gateway of making a start is searched the Fax Server corresponding with receiving end gateway or facsimile machine, sends the call request message corresponding with this fax of buffer memory to this Fax Server.Fax Server receives this call request message and sends the call message of supporting this fax, the corresponding facsimile machine of making a start with this fax sends the negotiation of carrying out the facsimile message transmission, and the facsimile machine of making a start after consulting successfully sends facsimile message to Fax Server.Fax Server receives and the storage facsimile message.The call request message of gateway buffer memory of making a start is deleted after this call request message successfully is sent to Fax Server, with the make a start memory space of gateway of saving.
Wherein, in the Fax Server a plurality of fax mailbox can be set, each fax mailbox has the number corresponding with facsimile machine.When Fax Server receives call request message, according to fax mailbox corresponding to receiving end facsimile machine number searching that carries in this call request message, search successfully afterwards call request message is sent to this fax mailbox.If do not find the fax mailbox corresponding with receiving end facsimile machine number in the Fax Server, then Fax Server can abandon call request message.After fax mailbox receives call request message, send call message, carry the identification information of supporting or not supporting to fax in this call.(for example have remaining space storage facsimile message) when the fax mailbox support is faxed, fax mailbox sends to the gateway of making a start and calls out the call message of supporting fax.The gateway of making a start sends facsimile message after receiving call message to fax mailbox.Fax mailbox receives and the storage facsimile message, and concrete, fax mailbox is resolved the facsimile message of receiving, obtains and store facsimile message (for example picture), and sends to the receiving end gateway according to facsimile message generation facsimile message.Need to prove, those skilled in the art are to be understood that, for fax mailbox the function that multiple mailbox often uses can be set, living forever most the storage time of facsimile message for example is set, namely deleted after the time that facsimile message is stored in fax mailbox reaches set point.
Step 406, Fax Server send the facsimile message of storage to the receiving end facsimile machine according to preset strategy.
Preset strategy can be periodically to send facsimile message, until send successfully.For example, the fax mailbox in the Fax Server namely sent call request message to the receiving end gateway every 2 minutes behind the storage facsimile message, if received the call message of faxing available, then the facsimile message with storage sends to the receiving end gateway; If what receive is the disabled call message of fax, then after 2 minutes, again send call request message, until the facsimile message of storage is sent out away or facsimile message arrives the ageing time of the facsimile message that fax mailbox arranges the memory time in fax mailbox.When facsimile message is form (for example picture) when storage with facsimile message, then periodically send call request message, until the facsimile message of storage is sent out away or facsimile message arrives default maximum duration the memory time in fax mailbox.This preset strategy can also be other strategies, and the embodiment of the invention does not limit this.
Above-mentioned IP facsimile method provided by the invention, the gateway of making a start in the step 405 sends message related to calls to Fax Server can also be according to the response of receiving end gateway, for example the receiving end gateway sends redirection message, the IP address of carrying Fax Server in redirection message to the gateway of making a start.The receiving end facsimile machine of storage association and the corresponding relation of Fax Server on the receiving end gateway, when the receiving end facsimile machine is unavailable, the receiving end gateway is searched the Fax Server corresponding with this receiving end facsimile machine, the gateway of making a start the address information of this Fax Server etc. sent to the gateway of making a start, so that can send call request message to Fax Server accordingly.
Need to prove, Fax over IP method provided by the invention, the corresponding relation of Fax Server and facsimile machine can be set according to actual needs, the respectively different facsimile machine of correspondence of different fax mailbox for example can be set in the same Fax Server, and namely same Fax Server is a plurality of facsimile machines backups.
Among the present invention, when the receiving end facsimile machine is unavailable, the facsimile machine of making a start is sent to Fax Server with facsimile message, by Fax Server storage facsimile message, and to receiving end facsimile machine re-transmission facsimile message, thereby when the receiving end facsimile machine is unavailable, still can finish the facsimile message process of transmitting of the facsimile machine of making a start, and since Fax Server stored facsimile message, can the receiving end facsimile machine can with after facsimile message is sent to the receiving end facsimile machine.
The present invention also provides a kind of gateway device, be applied to comprise and make a start in the system of facsimile machine, the gateway of making a start, receiving end gateway and receiving end facsimile machine, the described gateway of making a start is before sending facsimile message to described receiving end gateway, send call request message to described receiving end gateway, also comprise Fax Server in the described system, when gateway was made a start in described gateway device conduct, as shown in Figure 5, described gateway device comprised:
Receiving element 11, for the facsimile message that receives the described facsimile machine of making a start, and the call message of described receiving end gateway and described Fax Server;
Transmitting element 12, be connected with described receiving element 11, be used for when the described receiving end facsimile machine of the call message identifier of described receiving end gateway is unavailable, the described call request message of buffer memory is sent to described Fax Server, and when the call message identifier support of described Fax Server is received faxes, send facsimile message to described Fax Server, receive described facsimile message by described Fax Server;
Described receiving element 11 also is used for: receive the redirection message that described receiving end gateway sends;
Described transmitting element 12 also is used for: the IP address according to the described Fax Server that carries in the described redirection message sends described call request message to described Fax Server; When described Fax Server support receives described fax, described facsimile message is sent to described Fax Server, receive described facsimile message by described Fax Server.
This gateway device also comprises:
Described transmitting element 12 also is connected with the described unit 14 of searching, be used for searching the Fax Server that unit 14 finds and sending described call request message to described, when described Fax Server support receives described fax, described facsimile message is sent to described Fax Server, receive described facsimile message by described Fax Server.
Described memory cell 13 also is used for: after described equipment is received the sign call message that can use of described receiving end facsimile machine or is sent described call request message to described Fax Server, and the described call request message of deletion buffer memory.
When described gateway device during as the receiving end gateway, described transmitting element 12 also is used for: when the receiving end facsimile machine is unavailable, send the disabled call message of sign receiving end facsimile machine to the gateway of making a start, and send the redirection message of the IP address of carrying Fax Server to the gateway of making a start.
Described transmitting element 12 also is used for: the number that carries described receiving end facsimile machine in the call request message that sends to described Fax Server.
Among the present invention, when the receiving end facsimile machine is unavailable, the facsimile machine of making a start is sent to Fax Server with facsimile message, by Fax Server storage facsimile message, and to receiving end facsimile machine re-transmission facsimile message, thereby when the receiving end facsimile machine is unavailable, still can finish the facsimile message process of transmitting of the facsimile machine of making a start, and since Fax Server stored facsimile message, can the receiving end facsimile machine can with after facsimile message is sent to the receiving end facsimile machine.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode in a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (12)
1. Fax over IP method, be applied to comprise and make a start in the system of facsimile machine, the gateway of making a start, receiving end gateway and receiving end facsimile machine, the described gateway of making a start is before sending facsimile message to described receiving end gateway, send call request message to described receiving end gateway, it is characterized in that, further comprise Fax Server in the applied system of the method; The method comprises:
Steps A, the call request message that the described gateway buffer memory of making a start sends to described receiving end gateway;
Step B, when the described receiving end facsimile machine of call message identifier of described receiving end gateway transmission is unavailable, the described gateway of making a start sends the described call request message of buffer memory to described Fax Server, and when the call message identifier support of described Fax Server is received faxes, send facsimile message to described Fax Server, receive described facsimile message by described Fax Server;
Step C, described Fax Server is stored described facsimile message, sends described facsimile message according to preset strategy to described receiving end facsimile machine.
2. the method for claim 1 is characterized in that, step B comprises:
The described gateway of making a start receives the redirection message that described receiving end gateway sends, and sends described call request message according to the IP address of the described Fax Server that carries in the described redirection message to described Fax Server;
When described Fax Server support received described fax, the described gateway of making a start sent described facsimile message to described Fax Server, receive described facsimile message by described Fax Server.
3. the method for claim 1 is characterized in that, step B comprises:
The described gateway of making a start is searched the Fax Server corresponding with described receiving end facsimile machine or receiving end gateway according to the corresponding relation of pre-configured facsimile machine or gateway and Fax Server, sends described call request message to the Fax Server that finds;
When described Fax Server support received described fax, the described gateway of making a start sent described facsimile message to described Fax Server, receive described facsimile message by described Fax Server.
4. method as claimed in claim 2 or claim 3 is characterized in that, described Fax Server configuration fax mailbox is used for storing the facsimile message of corresponding facsimile machine, and the number of described fax mailbox is corresponding with the number of facsimile machine;
Describedly send described call request message to Fax Server and comprise: in described call request message, carry the number of described receiving end facsimile machine, for the described Fax Server fax mailbox corresponding according to the number searching of described receiving end facsimile machine.
5. such as each described method of claim 1-3, it is characterized in that, also comprise: receive the described receiving end facsimile machine of sign can with or after the described gateway of making a start sends described call request message to Fax Server, the described call request message of the described gateway deletion buffer memory of making a start.
6. such as each described method of claim 1-3, it is characterized in that step C comprises:
Described Fax Server sends described facsimile message according to predetermined period to described receiving end gateway; After described facsimile message sends successfully, the described facsimile message of described Fax Server deletion storage.
7. gateway device, be applied to comprise and make a start in the system of facsimile machine, the gateway of making a start, receiving end gateway and receiving end facsimile machine, the described gateway of making a start is before sending facsimile message to described receiving end gateway, send call request message to described receiving end gateway, it is characterized in that, also comprise Fax Server in the described system, when gateway was made a start in described gateway device conduct, described gateway device comprised:
Receiving element, for the facsimile message that receives the described facsimile machine of making a start, and the call message of described receiving end gateway and described Fax Server;
Transmitting element, be connected with described receiving element, be used for when the described receiving end facsimile machine of the call message identifier of described receiving end gateway is unavailable, the described call request message of buffer memory is sent to described Fax Server, and when the call message identifier support of described Fax Server is received faxes, send facsimile message to described Fax Server, receive described facsimile message by described Fax Server;
Memory cell is connected with transmitting element with described receiving element, is used for the call request message that buffer memory sends to described receiving end gateway.
8. gateway device as claimed in claim 7 is characterized in that,
Described receiving element also is used for: receive the redirection message that described receiving end gateway sends;
Described transmitting element also is used for: the IP address according to the described Fax Server that carries in the described redirection message sends described call request message to described Fax Server; When described Fax Server support receives described fax, described facsimile message is sent to described Fax Server, receive described facsimile message by described Fax Server.
9. gateway device as claimed in claim 7 is characterized in that, also comprises:
Search the unit, be used for the corresponding relation according to pre-configured facsimile machine or gateway and Fax Server, search the Fax Server corresponding with described receiving end facsimile machine or receiving end gateway;
Described transmitting element also is connected with the described unit of searching, be used for searching the Fax Server that the unit finds and sending described call request message to described, when described Fax Server support receives described fax, described facsimile message is sent to described Fax Server, receive described facsimile message by described Fax Server.
10. gateway device as claimed in claim 8 or 9, it is characterized in that, described memory cell also is used for: after described gateway device is received the sign call message that can use of described receiving end facsimile machine or is sent described call request message to described Fax Server, and the described call request message of deletion buffer memory.
11. gateway device as claimed in claim 7, it is characterized in that, when described gateway device during as the receiving end gateway, described transmitting element also is used for: when the receiving end facsimile machine is unavailable, send the disabled call message of sign receiving end facsimile machine to the gateway of making a start, and send the redirection message of the IP address of carrying Fax Server to the gateway of making a start.
12. such as each described gateway device of claim 7-9, it is characterized in that described transmitting element also is used for: the number that in the call request message that sends to described Fax Server, carries described receiving end facsimile machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010508425 CN101969437B (en) | 2010-10-15 | 2010-10-15 | IP fax method and gateway device |
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| CN 201010508425 CN101969437B (en) | 2010-10-15 | 2010-10-15 | IP fax method and gateway device |
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| CN101969437A CN101969437A (en) | 2011-02-09 |
| CN101969437B true CN101969437B (en) | 2013-04-10 |
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| CN106789613A (en) * | 2017-01-12 | 2017-05-31 | 许继集团有限公司 | A kind of date storage method of data communication gateway machine |
| CN111010489B (en) * | 2019-11-20 | 2021-11-05 | 深圳震有科技股份有限公司 | Fax data processing method and device, computer equipment and medium |
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| CN1901595A (en) * | 2005-07-21 | 2007-01-24 | 中兴通讯股份有限公司 | Method for sending fax to radio fax device |
| CN1925537A (en) * | 2006-09-30 | 2007-03-07 | 华为技术有限公司 | Non-real time wireless fax system and method and fax server |
| CN101657027A (en) * | 2009-09-10 | 2010-02-24 | 普天通信有限责任公司 | Wireless faxing method, device and system |
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| CN101969437A (en) | 2011-02-09 |
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