CN101662552B - Method, system and media gateways for realizing encrypted fax - Google Patents
Method, system and media gateways for realizing encrypted fax Download PDFInfo
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- CN101662552B CN101662552B CN2008102126719A CN200810212671A CN101662552B CN 101662552 B CN101662552 B CN 101662552B CN 2008102126719 A CN2008102126719 A CN 2008102126719A CN 200810212671 A CN200810212671 A CN 200810212671A CN 101662552 B CN101662552 B CN 101662552B
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Abstract
The invention discloses a method, a system and media gateways for realizing encrypted fax. The method comprises the following steps: prearranging fax encrypting devices and fax decrypting devices in the media gateway at the sending side and the media gateway at the receiving side; after the media gateway at the sending side detects a fax beginning event, carrying out the encrypted fax media negotiation by a media gateway controller and the media gateway at the receiving side; under the condition that the negotiation is successful, the fax encrypting device of the media gateway at the sending side to encrypt the information to be faxed according to the negotiated encrypted fax media, and acquiring the encrypted fax information; and sending the encrypted fax information to the media gateway at the receiving side by the media gateway at the sending side. By adopting the technical scheme, the fax content of a common fax machine without an encryption function can be encrypted for transmission in the IP network transmission, thereby improving the confidentiality and the safety of the fax content.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of method, system and media gateway that realizes encrypted fax.
Background technology
At present, along with next generation network (Next Generation Network, abbreviating NGN as) system is in the extensive use of communication field, IP network has replaced traditional public switch telephone network (Public Switched Telephone Network gradually, abbreviate PSTN as), MGCP is applied in the NGN network widely as the consensus standard that carrying separates with control.
Fig. 1 is the schematic diagram of the networking of Fax over IP in the NGN network, as shown in Figure 1, Media Gateway Controller (Media Gateway Controller, abbreviate MGC as) and media gateway (Media Gateway, abbreviate MG as) networking telephone (Voice over IP of composition, abbreviate VoIP as) packet switching system, wherein, the Media Gateway Controller resource of not conversing itself, it is the equipment of management of media gateway, and undertaken alternately by MGCP and media gateway, foundation and release that it can controlling call, facsimile equipment 1 carries out facsimile service with facsimile equipment 2 by media gateway 1 and media gateway 2.In addition, media gateway 1 and media gateway 2 also are responsible for the processing of variety of event, for example, the detection of off-hook, on-hook, row's fork with report, consult the required various resources etc. of conversing.
In order to guarantee the confidentiality of facsimile message, various facsimile machine manufacturer has produced various encrypted fax equipment, and these encrypted fax equipment also can be applied in the NGN network.Networking schematic diagram when Fig. 2 is linked into the NGN network for encrypted fax equipment.As shown in Figure 2, in order to realize the encrypted fax business, need be to user's 1 (User1) encrypted fax equipment 1 and user's 2 (User2) encrypted fax equipment 2 registration encrypted fax business on MGC, after MGC receives the fax beginning incident that gateway reports, consult the encrypted fax medium of User1 and User2.
At present, for more extensive, more stable being applied in the NGN network of facsimile service, specified in more detail has been done at the realization flow of the facsimile service under the NGN network architecture by domestic telecommunication operator.Fig. 3 is the flow chart that carries out the encrypted fax media negotiation in the prior art under based on system environments shown in Figure 2, as shown in Figure 3, comprises following processing:
Step 301, the media gateway of calling and called user User1, User2 is carried out media negotiation by MGC, and enters the voice call flow journey;
Step 302, MGC sends the fax detection incident to calling and called media gateway MG1 and MG2;
Step 303, encrypted fax user User1 or User2 send the fax commencing signal to media gateway, and media gateway arrives MGC with this signal forwarding;
Step 304, MGC judges that according to the information of registration encrypted fax business encrypted fax User1 and User2 have registered and supported encrypted fax;
Step 305, MGC consults the encrypted fax medium to the calling and called media gateway, finally enters the facsimile call flow process.
From above-mentioned processing procedure and networking schematic diagram as shown in Figure 2 as can be seen, encrypted fax is called out and required user's facsimile equipment must be the specific facsimile machine with encryption function, then can not carry out encrypted transmission for the Common Facsimile Machine that does not have encryption function.Therefore, for the common fax user who does not have encryption function, after facsimile call is set up, the facsimile medium stream that does not have to encrypt will transmit in the IP network between MG1 and the MG2, and the facsimile medium stream that does not have to encrypt is easy to be obtained by the third party in transmission course, thereby the content that causes faxing is revealed.Yet, propose at present to realize the technical scheme of encrypting in the correlation technique as yet to the fax content of the Common Facsimile Machine that do not have encryption function.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of method, system and media gateway that realizes encrypted fax, to solve in the correlation technique problem of encrypting of can't realizing the fax content of the Common Facsimile Machine that do not possess encryption function.
According to an aspect of the present invention, provide a kind of method that realizes encrypted fax, be used for NGN system.
Method according to realization encrypted fax of the present invention comprises: facsimile encryption device and fax decipher all are set in transmitter side media gateway and receiver side media gateway in advance; After the transmitter side media gateway detects fax beginning incident, carry out the encrypted fax media negotiation by Media Gateway Controller and receiver side media gateway, consulting under the case of successful, the facsimile encryption device of transmitter side media gateway is encrypted the information of needs fax according to the encrypted fax medium of consulting, and obtains encrypted fax information; The transmitter side media gateway sends encrypted fax information to the receiver side media gateway.
In addition, after facsimile encryption device in transmitter side media gateway and receiver side media gateway are set and the fax decipher, further comprise: the receiver side user for the transmitter side user of transmitter side media gateway and receiver side media gateway in Media Gateway Controller registers the encrypted fax business.
In addition, after the transmitter side media gateway detected fax beginning incident, method further comprised: the transmitter side media gateway will be faxed the beginning reporting events to Media Gateway Controller; Media Gateway Controller judges according to the encrypted fax of registration in advance is professional whether transmitter side media gateway and receiver side media gateway support encrypted fax, and be judged as under the situation that is, carry out the encrypted fax media negotiation with transmitter side media gateway and receiver side media gateway.
Wherein, the processing that above-mentioned transmitter side media gateway is carried out the encrypted fax media negotiation by Media Gateway Controller and receiver side media gateway is specially: Media Gateway Controller sends first notification message to the transmitter side media gateway, requires the transmitter side media gateway to return the encrypted fax medium; Media Gateway Controller receives the encrypted fax medium that the transmitter side media gateway is returned, and send second notification message to the receiver side media gateway, the encrypted fax medium that require the receiver side media gateway to return according to the transmitter side media gateway mate, and return the encrypted fax medium that the receiver side media gateway is supported to Media Gateway Controller; Media Gateway Controller receives the encrypted fax medium of the support that the receiver side media gateway returns, and the encrypted fax medium supported as the encrypted fax medium of consulting, and are sent to the transmitter side media gateway with the encrypted fax medium of consulting.
In addition, after above-mentioned receiver side media gateway received encrypted fax information, method further comprised: the fax decipher of receiver side media gateway is decrypted encrypted fax information according to the encrypted fax medium of consulting.
According to a further aspect in the invention, provide a kind of system that realizes encrypted fax, be used for NGN system.
System according to realization encrypted fax of the present invention comprises: a plurality of media gateway, be provided with facsimile encryption device and fax decipher, wherein, after transmitter side media gateway in a plurality of media gateway detects fax beginning incident, carry out the encrypted fax media negotiation by the receiver side media gateway in Media Gateway Controller and a plurality of media gateway, consulting under the case of successful, the facsimile encryption device of transmitter side media gateway is encrypted the information of needs fax according to the encrypted fax medium of consulting, obtain encrypted fax information, and send encrypted fax information to the receiver side media gateway; After the receiver side media gateway received encrypted fax information, the fax decipher of receiver side media gateway encrypted fax medium through consultation were decrypted encrypted fax information; Media Gateway Controller is used for carrying out the encrypted fax media negotiation with transmitter side media gateway and receiver side media gateway.
In addition, above-mentioned Media Gateway Controller is further used for registering the encrypted fax business for the transmitter side user of transmitter side media gateway and the receiver side user of receiver side media gateway.
In addition, above-mentioned Media Gateway Controller is further used for judging according to the encrypted fax of registration in advance is professional whether transmitter side media gateway and receiver side media gateway support encrypted fax.
In accordance with a further aspect of the present invention, provide a kind of media gateway.
Media gateway according to the present invention comprises: the media negotiation module is used for carrying out the encrypted fax media negotiation by Media Gateway Controller and other media gateway; The facsimile encryption device is used for according to the encrypted fax medium of consulting needs being encrypted to the information of other media gateway fax, and obtains encrypted fax information; Sending module is used for sending encrypted fax information to other media gateway; Receiver module is used for receiving encrypted fax information from other media gateway; The fax decipher is used for according to the encrypted fax medium of consulting the encrypted fax information that receives being decrypted.
Wherein, above-mentioned facsimile encryption device and fax decipher use hardware or software to realize.
Technical scheme by means of this law invention, by facsimile encryption device and fax decipher are set in media gateway, can make the fax content of the Common Facsimile Machine that do not possess encryption function in the IP network transmission, carry out encrypted transmission, improve the confidentiality and the fail safe of fax content.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of Fax over IP networking under the NGN network architecture in the correlation technique;
Fig. 2 is the networking schematic diagram that encrypted fax equipment inserts the NGN network in the correlation technique;
Fig. 3 is the flow chart of encrypted fax media negotiation in the correlation technique;
Fig. 4 inserts the networking schematic diagram of NGN network according to the common facsimile equipment of the embodiment of the invention;
Fig. 5 is the flow chart according to the method for the realization encrypted fax of the embodiment of the invention;
Fig. 6 is the signaling process figure according to the detailed process of the method for the realization encrypted fax of the embodiment of the invention;
Fig. 7 is the block diagram according to the system of the realization encrypted fax of the embodiment of the invention;
Fig. 8 is the system's connection diagram that realizes encrypted fax when carrying out facsimile service according to the embodiment of the invention;
Fig. 9 is the block diagram according to the media gateway of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Functional overview
In correlation technique, the facsimile machine that does not possess encryption function can not carry out encrypted transmission during the transmitting facsimile content in IP network, thereby can not guarantee to transmit the fail safe of content, therefore, the invention provides a kind of technical scheme that addresses the above problem, additional respectively facsimile encryption device and fax decipher on media gateway 1 (MG1) and media gateway 2 (MG2), as shown in Figure 4, facsimile encryption device and fax decipher (can be hardware devices as the internal resource of MG1 and MG2 respectively, also can realize the encrypting and decrypting function) with software, contrast as can be seen by Fig. 4 and networking diagram 2, facsimile equipment among Fig. 4 (User1 and User2) is not an encrypted fax equipment, and has increased facsimile encryption/decipher on the MG1 of Fig. 4 and MG2.Wherein, MG1 and MG2 communicate by IP network by Real-time Transport Protocol, and are undertaken alternately by MGCP and Media Gateway Controller (MGC).
In addition, need go up at Media Gateway Controller (MGC) and be User1 and User2 registration encrypted fax business, Media Gateway Controller is carrying out (for example carrying enciphered message in the facsimile medium negotiations process with MG1 and MG3, comprise cryptographic algorithm, echo inhibition etc.), carry out enciphered message and consult (also can be called encrypted media consults), after facsimile medium consults to finish, consult to determine a kind of enciphered message (encrypted media) between media gateway MG1 and the MG2, when between media gateway, transmitting the fax content, the media gateway transmitter side is encrypted according to the enciphered message that consults, and receiver side then is decrypted according to the enciphered message that consults equally.Need to prove that the present invention is equally applicable to the MODEM encryption of calls.Below, above-mentioned technical scheme is described in detail.
Method embodiment
According to embodiments of the invention, a kind of method that realizes encrypted fax is provided, be used for NGN system.Fig. 5 is the flow chart according to the method for the realization encrypted fax of the embodiment of the invention, as shown in Figure 5, comprises following processing:
Step S502 all is provided with facsimile encryption device and fax decipher in advance in transmitter side MG and receiver side MG;
After the processing of carrying out step S502, also need in MGC the receiver side User registration encrypted fax business of transmitter side User and the receiver side MG of transmitter side MG.
Step S504, after transmitter side MG detects fax beginning incident, transmitter side MG will fax the beginning reporting events to MGC, and carry out the encrypted fax media negotiation by MGC and receiver side MG, consulting under the case of successful, the facsimile encryption device of transmitter side MG is encrypted the information of needs fax according to the encrypted fax medium of consulting, and obtains encrypted fax information;
In step S504, before carrying out the encrypted fax media negotiation, MGC needs the encrypted fax of basis registration in advance is professional judges whether transmitter side MG and receiver side MG support encrypted fax, and is being judged as under the situation that is, carries out the encrypted fax media negotiation with transmitter side MG and receiver side MG again.
Wherein, carry out specifically being treated to of encrypted fax media negotiation: (one) MGC sends first notification message to transmitter side MG, requires transmitter side MG to return the encrypted fax medium; (2) MGC receives the encrypted fax medium that transmitter side MG returns, and sends second notification message to receiver side MG, requires receiver side MG to mate according to the encrypted fax medium that transmitter side MG returns, and returns the encrypted fax medium that receiver side MG supports to MGC; (3) MGC receives the encrypted fax medium of the support of being returned by receiver side MG, and the encrypted fax medium supported as the encrypted fax medium of consulting, and are sent to transmitter side MG with the encrypted fax medium of consulting.
Step S506, transmitter side MG sends encrypted fax information to receiver side MG.
After step S506, the fax decipher of receiver side MG is decrypted encrypted fax information according to the encrypted fax medium of consulting.
Below, in conjunction with Fig. 6, the processing according to the method for the realization encrypted fax of the embodiment of the invention is described in detail, as shown in Figure 6, comprise following processing:
Step 601 is set up voice call between fax user User1 and User2;
Step 602, MGC inquires MG1, MG2 and supports fax;
Step 603, MGC sends facsimile signal detection incident to the media gateway MG1 and the MG2 at User1, User2 place respectively;
Step 604, User1 detects facsimile signal, and facsimile signal is sent to MG1;
Step 605, MG1 detects the facsimile signal of User1, and the beginning reporting events of will faxing is given MGC;
Step 606, MGC is to MG1 echo reply message;
Step 607, MGC inquires MG1, MG2 and supports encrypted fax;
Step 608, MGC sends medium to MG1 and switches message (above-mentioned first notification message), the medium of User1 is switched to the fax attitude, and require MG1 to return the encrypted fax medium of support;
Step 609, MG1 echo reply message, and return the encrypted fax medium that MG1 supports;
Step 610, MGC sends medium to MG2 and switches message (above-mentioned second notification message), and the medium of User2 are switched to the fax attitude, and MG2 mates the encrypted fax medium that MG1 returns as distant end media;
Step 611, MG2 echo reply message, and return the encrypted fax medium that MG2 supports;
Step 612, MGC sends switching media message to MG1, and the encrypted fax medium of MG2 are mated as distant end media;
Step 613, MG1 is to MGC echo reply message;
Step 614, MG1 and MG2 facsimile medium and cryptographic algorithm consult to finish, and it is encrypted when IP network transmits that User1 and User2 begin the transmitting facsimile content.
Contrast as can be seen by Fig. 6 and Fig. 3, when consulting facsimile medium, processing scheme shown in Figure 6 only need judge whether MG1 and MG2 support encrypted fax, and need not be concerned about whether User1 and User2 support encrypted fax, like this, even User1 and User2 are the facsimile machine with encryption function, can realize encrypted transmission to the facsimile data between User1 and the User2 equally.
System embodiment
According to technical scheme of the present invention, a kind of system that realizes encrypted fax is provided, be used for NGN system.Fig. 7 is the block diagram according to the system of the realization encrypted fax of the embodiment of the invention, and as shown in Figure 7, Media Gateway Controller 72 and a plurality of media gateway 1 of being attached thereto are to n, and wherein, a plurality of media gateway 1 to n are provided with facsimile encryption device and fax decipher.In an encrypted fax business, as shown in Figure 8, comprise the receiver side media gateway 84 in transmitter side media gateway 80 in a plurality of media gateway 1 to n, Media Gateway Controller 82, a plurality of media gateway 1 to n, below in conjunction with Fig. 8 this system is described.
Transmitter side MG80, facsimile encryption device and fax decipher at first need be set in transmitter side MG80, transmitter side MG80 is used for after detecting fax beginning incident, the beginning reporting events of will faxing is given MGC, and carry out the encrypted fax media negotiation by MGC82 and receiver side MG84, and to consult under the case of successful, the facsimile encryption device is encrypted the information of needs fax according to the encrypted fax medium of consulting, obtain encrypted fax information, and send encrypted fax information to receiver side MG84;
MGC82 is used for carrying out the encrypted fax media negotiation with transmitter side MG80 and receiver side MG84; In addition, MGC82 also needs in advance the receiver side User registration encrypted fax business for the transmitter side User of transmitter side MG80 and receiver side MG84.And, before carrying out the encrypted fax media negotiation, MGC82 needs also the encrypted fax of basis registration in advance is professional judges whether transmitter side MG and receiver side MG support encrypted fax, and is being judged as under the situation that is, carries out the negotiation of encrypted fax medium with transmitter side MG80 and receiver side MG84 again.
Receiver side MG84 wherein is provided with facsimile encryption device and fax decipher, is used for carrying out the encrypted fax media negotiation by MGC82 and transmitter side MG80, and wherein the fax decipher of She Zhiing is decrypted encrypted fax information according to the encrypted fax medium of consulting.
Below, the detailed process according to the encrypted fax media negotiation of the embodiment of the invention is described in detail, comprise following processing:
The first step, media gateway MG180 detects fax beginning incident, and reports media gateway controller MGC 82;
In second step, media gateway controller MGC 82 judges that MG180 and MG284 support encrypted fax;
In the 3rd step, media gateway controller MGC 82 sends message (above-mentioned first notification message) and notifies MG180 that the medium of Userl are switched to the fax attitude, and requires MG180 to return the encrypted fax medium of support;
In the 4th step, MGC82 receives after the encrypted fax that MG180 returns, notice MG2
84 switch facsimile medium (notifying by sending above-mentioned second notification message), and require MG284 that the medium of MG180 are mated as far-end, consult to determine final encrypted fax medium;
In the 5th step, MGC82 receives after the final encrypted fax medium of consulting to determine of MG284, and the encrypted fax medium of MG284 are sent to MG180.
By above-mentioned processing, just can realize the negotiation of encrypted fax medium.
Device embodiment
According to embodiments of the invention, a kind of media gateway is provided, be positioned at transmitter side and receiver side.Fig. 9 is the block diagram according to the media gateway of the embodiment of the invention, as shown in Figure 9, comprises media negotiation module 90, facsimile encryption device 92, fax decipher 94, sending module 96, receiver module 98.Below, above-mentioned module is described in detail.
Media negotiation module 90, be connected to sending module 96, receiver module 98, facsimile encryption device 92, fax decipher 94, be used for carrying out the encrypted fax media negotiation by MGC, and the determined encrypted media information of encrypted fax media negotiation sent to facsimile encryption device 92 and fax decipher 94, make facsimile encryption device 92, fax decipher 94 to carry out encryption and decryption to the content of needs fax according to the encrypted media information of consulting;
Facsimile encryption device 92, be connected to sending module 96 and media negotiation module 90, the encrypted fax medium that are used for consulting according to media negotiation module 90 are encrypted the information of needs fax, obtain encrypted fax information, and the encrypted fax information that obtains is sent to sending/receiving module 96;
Fax decipher 94 is connected to receiver module 98 and media negotiation module 90, is used for according to the encrypted fax medium that media negotiation module 90 is consulted the encrypted fax information that receives by sending/receiving module 96 being decrypted;
Send to receive 96, be connected to media negotiation module 90, facsimile encryption device 92 is used for sending encrypted fax information and sending the mutual signaling of consulting to other media gateway;
Receiver module 98 is connected to media negotiation module 90, fax decipher 94, is used for receiving encrypted fax information and receiving the mutual signaling of consulting from other media gateway;
Need to prove that encryption equipment in media gateway and decipher can use hardware to realize, also can use software to realize.
In sum, by means of technical scheme of the present invention, in the IP network transmission, carry out encrypted transmission by the fax content that encryption equipment and decipher is set, can makes the Common Facsimile Machine that does not possess encryption function in media gateway, improved the confidentiality of fax content.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method that realizes encrypted fax is used for NGN system, it is characterized in that, described method comprises:
Facsimile encryption device and fax decipher all are set in transmitter side media gateway and receiver side media gateway in advance;
Receiver side user for the transmitter side user of described transmitter side media gateway and described receiver side media gateway in Media Gateway Controller registers the encrypted fax business;
After described transmitter side media gateway detects fax beginning incident, carry out the encrypted fax media negotiation by described Media Gateway Controller and described receiver side media gateway, consulting under the case of successful, the facsimile encryption device of described transmitter side media gateway is encrypted the information of needs fax according to the encrypted fax medium of consulting, and obtains encrypted fax information;
Described transmitter side media gateway sends described encrypted fax information to described receiver side media gateway.
2. method according to claim 1 is characterized in that, after described transmitter side media gateway detected fax beginning incident, described method further comprised:
Described transmitter side media gateway begins reporting events with described fax and gives described Media Gateway Controller;
Described Media Gateway Controller judges according to the encrypted fax of registration in advance is professional whether described transmitter side media gateway and described receiver side media gateway support encrypted fax, and be judged as under the situation that is, carry out described encrypted fax media negotiation with described transmitter side media gateway and described receiver side media gateway.
3. method according to claim 2 is characterized in that, the processing that described transmitter side media gateway is carried out described encrypted fax media negotiation by described Media Gateway Controller and described receiver side media gateway is specially:
Described Media Gateway Controller sends first notification message to described transmitter side media gateway, requires described transmitter side media gateway to return the encrypted fax medium;
Described Media Gateway Controller receives the described encrypted fax medium that described transmitter side media gateway is returned, and send second notification message to described receiver side media gateway, the described encrypted fax medium that require described receiver side media gateway to return according to described transmitter side media gateway mate, and return the encrypted fax medium that described receiver side media gateway is supported to described Media Gateway Controller;
Described Media Gateway Controller receives the encrypted fax medium of the described support that described receiver side media gateway returns, with the encrypted fax medium of described support encrypted fax medium, and the encrypted fax medium of described negotiation are sent to described transmitter side media gateway as described negotiation.
4. according to each described method in the claim 1 to 3, it is characterized in that after described receiver side media gateway received described encrypted fax information, described method further comprised:
The described fax decipher of described receiver side media gateway is decrypted described encrypted fax information according to the encrypted fax medium of described negotiation.
5. a system that realizes encrypted fax is used for NGN system, it is characterized in that, described system comprises:
A plurality of media gateway, be provided with facsimile encryption device and fax decipher, wherein, after transmitter side media gateway in described a plurality of media gateway detects fax beginning incident, carry out the encrypted fax media negotiation by the receiver side media gateway in Media Gateway Controller and the described a plurality of media gateway, consulting under the case of successful, the facsimile encryption device of described transmitter side media gateway is encrypted the information of needs fax according to the encrypted fax medium of consulting, obtain encrypted fax information, and send described encrypted fax information to described receiver side media gateway; After described receiver side media gateway received described encrypted fax information, the fax decipher of described receiver side media gateway was decrypted described encrypted fax information by the encrypted fax medium of described negotiation;
Described Media Gateway Controller, be used to the transmitter side user of described transmitter side media gateway and the receiver side user of described receiver side media gateway to register the encrypted fax business, and carry out described encrypted fax media negotiation with described transmitter side media gateway and described receiver side media gateway.
6. system according to claim 5 is characterized in that, described Media Gateway Controller is further used for judging according to the encrypted fax of registration in advance is professional whether described transmitter side media gateway and described receiver side media gateway support encrypted fax.
7. a media gateway is characterized in that, comprising:
The media negotiation module is used for carrying out the encrypted fax media negotiation by Media Gateway Controller and other media gateway;
The facsimile encryption device is used for according to the encrypted fax medium of consulting needs being encrypted to the information of other media gateway fax, and obtains encrypted fax information;
Sending module is used for sending described encrypted fax information to other media gateway;
Receiver module is used for receiving encrypted fax information from other media gateway;
The fax decipher is used for according to the encrypted fax medium of described negotiation the described encrypted fax information that receives being decrypted.
8. media gateway according to claim 7 is characterized in that, described facsimile encryption device and fax decipher use hardware or software to realize.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102126719A CN101662552B (en) | 2008-08-26 | 2008-08-26 | Method, system and media gateways for realizing encrypted fax |
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| CN2008102126719A CN101662552B (en) | 2008-08-26 | 2008-08-26 | Method, system and media gateways for realizing encrypted fax |
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| CN101662552B true CN101662552B (en) | 2011-05-25 |
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| CN104394299B (en) * | 2014-12-09 | 2017-07-25 | 天津光电安辰信息技术有限公司 | A kind of encrypted fax device and its implementation based on intelligent code key |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1622583A (en) * | 2003-11-28 | 2005-06-01 | 华为技术有限公司 | Method for implementing facsimile in next generation network |
| US7239629B1 (en) * | 1999-12-01 | 2007-07-03 | Verizon Corporate Services Group Inc. | Multiservice network |
| CN101060504A (en) * | 2007-04-13 | 2007-10-24 | 中兴通讯股份有限公司 | A method for negotiating the next generation of network media gateway fax switching mode |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7239629B1 (en) * | 1999-12-01 | 2007-07-03 | Verizon Corporate Services Group Inc. | Multiservice network |
| CN1622583A (en) * | 2003-11-28 | 2005-06-01 | 华为技术有限公司 | Method for implementing facsimile in next generation network |
| CN101060504A (en) * | 2007-04-13 | 2007-10-24 | 中兴通讯股份有限公司 | A method for negotiating the next generation of network media gateway fax switching mode |
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