CN100421411C - Method and apparatus for transmitting information between digital data net and network - Google Patents
Method and apparatus for transmitting information between digital data net and network Download PDFInfo
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- CN100421411C CN100421411C CNB2005100986007A CN200510098600A CN100421411C CN 100421411 C CN100421411 C CN 100421411C CN B2005100986007 A CNB2005100986007 A CN B2005100986007A CN 200510098600 A CN200510098600 A CN 200510098600A CN 100421411 C CN100421411 C CN 100421411C
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Abstract
The present invention provides a method and device for transferring information between digital data networks. The present invention mainly comprises the steps that DDNs (Digital Data Networks) which are mutually independent are connected with an ISDN (Integrated Services Digital Network); the ISDN network is used for the Digital Data Networks to mutually transfer the information. By using the method of the present invention, the existing ISDN network can connect the dispersed DDN networks which are mutually independent, and the information between two DDN networks is transparently transmitted in the prior ISDN network.
Description
Technical field
The present invention relates to communication field, relate in particular to a kind of method and device that between DDN (Digital Data Net) network, transmits information.
Background technology
DDN (Digital Data Network, Digital Data Net) is the communication network that adopts the digital transmission channel transmission of data signals, it can provide Leased line lending circuit point-to-point, point-to-points and the some transparent transmission, and quality digital special circuit and other new business of various speed is provided for the user.
In the actual use of DDN, the user need be linked into the DDN network by various speed, and user terminal is linked into the conventional method of DDN network and is in the prior art:
DDN node machine provides 2B1Q (2 binary systems, 1 quaternary) interface to the user, and the 2B1Q interface is a kind of digital transmission line sign indicating number, is the sign indicating number type of a kind of 4 level and irredundant degree.The some synchronous or asynchronous interface of 0.6～128kbit/s speed can be provided.The MUX of user side (multiplexing equipment) links to each other with DDN node machine by the 2B1Q transmission system.User terminal is computer for example, can be connected on the MUX by serial ports, and then be linked into the DDN network.The 2B1Q transmission system can be supported longer-distance transmission, generally can reach 3～4km.
The DDN network has the restriction in zone, and some little zonal separate DDN networks exist and interconnect and the demand of pass-along message mutually.If directly take to extend the method for DDN network, the separate DDN network of each dispersion is linked together, need bigger cost, benefit is also bad.In the prior art, there be not a kind of effectively separate DDN network of each dispersion being connected together and the method for pass-along message mutually.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method and device that between the DDN network, transmits information, thereby can realize two internetwork information of DDN are carried out transparent transmission in existing ISDN (integrated services digital network) network.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method of transmitting information between the Digital Data Net network comprises:
Transparent u interface is set on the DSL veneer, disposes described DSL veneer and make it work in multiplexed network terminal MNT and multiplexel circuit terminal MLT mode, all comprise D passage, B1 passage and B2 passage among described MNT and the MLT;
The first separate Digital Data Net DDN network all links to each other with described DSL veneer respectively with the second Digital Data Net DDN network, and link to each other with the integrated services digital network isdn network by described u interface respectively, a described DDN network and the 2nd DDN network transmit information mutually by described isdn network.
Set up inner semipermanent the connection respectively between the D passage of the D passage of described MNT, B1 passage, B2 passage and MLT, B1 passage, the B2 passage.
Difference configuration process flow process between described MNT and MLT, this handling process comprises that semipermanent setting handling process, semipermanent deletion handling process, semipermanent time-out handling process, semipermanent time-out recover at least one in handling process, semipermanent dismounting handling process and the semipermanent connection processing flow process.
The ISDN main frame is that D passage, B1 passage and the B2 passage among described MNT and the MLT respectively applied for a time slot, described MNT is according to 64Kbits/s or 128Kbits/s or 144Kbits/s speed access basic rate access BRA data, and described MLT is according to 64Kbits/s or 128Kbits/s or 144Kbits/s speed access BRA data.
The information of described DDN network to isdn network, is carried out transparent transmission by the M channel transfer in the u interface in isdn network.
The ISDN main frame is transmitted the message in the described M channel, and the message of forwarding comprises that C/I channel command, C/I channel command are replied, embedd operations channel EOC order, EOC data, embedd operations channel EOC order data are replied, M4 path message and M5/6 path message.
A kind of network connection device comprises:
DSL veneer: be used for providing to external world a transparent u interface, by pass-along message between this u interface and the external world, the message that receives is passed to the device talk module, and this veneer works in MNT mode and MLT mode, all comprises D passage, B1 passage and B2 passage among MNT and the MLT;
Semipermanent link block: be used for setting up inner semipermanent the connection respectively between the D passage, B1 passage, B2 passage at the D of MNT passage, B1 passage, B2 passage and MLT, the link information of setting up is passed to the port controlling module, and respectively apply for a time slot for D passage, B1 passage and B2 passage among MNT and the MLT;
Device talk module: be used between DSL veneer and port controlling module, transmitting various message;
The port controlling module: be used to preserve the time slot handle of D passage, B1 passage and B2 passage, according to the link information that semipermanent link block passes over, the message that the device talk module is passed over passes to target port.
As seen from the above technical solution provided by the invention, the present invention connects the separate DDN network that disperses by existing isdn network, with two internetwork information of DDN in the bigger PSTN of area coverage (public switch telephone network) network, speed according to 64Kbits/s-144Kbits/s is carried out transparent transmission, both satisfied the demand that connects the DDN network, maximally utilised the existing network facilities again, the waste economically of having avoided repeated construction to bring.
Description of drawings
Fig. 1 is the structure chart of U mouth transparent transmission system;
Fig. 2 is the schematic diagram of the method for the invention.
Embodiment
The invention provides a kind of method and device that between the DDN network, transmits information, core of the present invention is: in U mouth transparent transmission system of the inner realization of Access Network, this system can set up semipermanent connection in Access Network inside, realization is to the transparent transmission of U message breath, thereby the 2B1Q interface that reaches DDN node machine carries out " transparent extension " about 4 kilometers.
The present invention at first need be at U mouth transparent transmission device of the inner realization of Access Network, and this device mainly comprises DSL (digital subscriber line, Digital Subscriber Line) veneer, semipermanent link block, device talk module and port controlling module.This device can be realized a U mouth transparent transmission system in conjunction with other module in the Access Network, and the structure of this U mouth transparent transmission system as shown in Figure 1.The function of DSL veneer, semipermanent link block, device talk module and port controlling module in the described U mouth transparent transmission device is as follows:
The DSL veneer: be used for providing to external world a transparent u interface, the DSL veneer is by this u interface pass-along message between the external world and device talk module, and this veneer works in MNT mode and MLT mode, all comprises D passage, B1 passage, B2 passage among MNT and the MLT.
Semipermanent link block: be used for setting up inner semipermanent the connection respectively between the D passage, B1 passage, B2 passage at the D of MNT passage, B1 passage, B2 passage and MLT, the link information of setting up is passed to the port controlling module, and respectively apply for a time slot for D passage, B1 passage and B2 passage among MNT and the MLT.Semipermanent connection start-stop apparatus type stated is DID_MNT, DID_MLT, and the total channel number is fixed as 1.
Device talk module: be used between DSL veneer and port controlling module, transmitting various message, on device communication module, need to increase DID_MNT (the direct connection identifier (CID of multiplexed network terminal) and DID_MLT (the direct connection identifier (CID of multiplexel circuit terminal).
The port controlling module: be used to preserve the time slot handle of D passage, B1 passage and B2 passage, according to the link information that semipermanent link block passes over, the message that the device talk module is passed over passes to target port.
The V5 interface second layer in U mouth transparent transmission system shown in Figure 1 comprises PSTN, BCC, V5 interface management, control protocol and resource management module, and these modules are used for realizing the V5 agreement at Access Network, abide by the V5 agreement when promptly realizing the butt joint of Access Network and switch.
This U mouth transparent transmission system can set up inner semipermanent connection at the Access Network in-house network, for U mouth relevant information provides transparent transmission channel.The Access Network main frame is realized the message of M channel among the ISDN is transmitted, and the message that needs the Access Network main frame to transmit comprises:
1, C/I channel command.
2, the C/I channel command is replied.
3, EOC (embedd operations channel) order or data.
4, the EOC order data is replied.
5, M4 path message.
6, M5/6 path message.
For realizing above-mentioned U mouth transparent transmission system, need on Access Network back-end data supervisor console, increase correlation function: need in user data, increase device type DID_MNT, DID_MLT.In being provided with, the port attribute of user port attribute list increases the selection of DID_MNT, DID_MLT.Device type increases DID_MNT, DID_MLT in semipermanent connection table.And require the Access Network main frame can under the situation that does not influence the business of having set up, realize dynamic setting to back-end data.
The schematic diagram of the method for the invention as shown in Figure 2.Concrete processing procedure is described below:
Can work in MNT, MLT mode by configuration DSL veneer, MNT/MLT must occur in pairs.A transparent u interface is provided to external world.DDN host's machine is by the interconnection of this u interface and isdn network, and the DDN host's machine by isdn network and far-end transmits information mutually.
Semipermanent link block in the described U mouth transparent transmission system is that MNT/MLT respectively applies for 3 time slots, is respectively applied for D, B1 and B2 channel, and D, the B1 with MNT links to each other with the respective channel of MLT is semipermanent with the B2 channel by exchange termination, finishes the transparent transmission of U message breath.The M channel massage that MNT, MLT report is delivered to the port controlling module by the device talk module, after the port controlling module is judged its primitive type, determine that then this message is transparent transmission class message, the port controlling module is found out the target port of this message from semipermanent connection table, again this forwards is arrived target port, thereby finish " the accurate transparent transmission " of M channel.
Because MNT/MLT need apply for 3 time slots, so with port controlling block structure middle-end slogan is the time slot handle that the handle (handle) of PSN (common user's port numbers) is used to preserve the B1 passage, port numbers is the time slot handle that the handle of PSN+1 is used to preserve the B2 passage, and port numbers is the time slot handle that the v5Bsn of PSN is used to preserve the D channel.Because the port type of the message that MNT, MLT, 2B+D port report is all DID_DSL (the direct connection identifier (CID of digital subscriber line), therefore, must from the controll block structure of port controlling module, take out its DID by PSN, this controll block structure need read corresponding data and carry out initialization operation when system start-up from database.
In above-mentioned U mouth transparent transmission system, the semipermanent flow processing of MNT/MLT comprises that semipermanent setting handling process, semipermanent deletion handling process, semipermanent time-out handling process, semipermanent time-out recover handling process, semipermanent dismounting handling process and semipermanent connection processing flow process.Be described below respectively:
1, the semipermanent setting handling process of MNT/MLT comprises the steps:
1-1, set inner semipermanent linkage record on the backstage, the record data of setting are passed to the host data library module;
1-2, database module send to semipermanent link block with the record data of setting, and semipermanent link block sends SPC_UP_OCCUPY (taking) message to the port controlling module;
After 1-3, port controlling module receive SPC_UP_OCCUPY message, check this message and port data legitimacy, after the passed examination, the D channel time slot of application MNT, issue D channel networking order to MNT, apply for the D channel time slot of MLT simultaneously, issue D channel networking order, the D channel time slot of networking MNT, MLT to MLT.
The port controlling module is also applied for the B1 channel time slot of MNT, issues B1 passage networking order to MNT, and the B1 channel time slot of applying for MLT is simultaneously sent out B1 passage networking order to MLT, connects the B1 channel time slot of MNT, MLT.
The port controlling module is also applied for the B2 channel time slot of MNT, issues B2 passage networking order to MNT, and the B2 channel time slot of applying for MLT simultaneously issues B passage networking order to MLT, connects the B2 channel time slot of MNT, MLT.
The semipermanent connection of MNT/MLT is finished, and the semipermanent setting handling process of MNT/MLT finishes.
2, the semipermanent deletion handling process of MNT/MLT comprises the steps:
The semipermanent linkage record deletion in the inside that 2-1, backstage will be provided with passes to the host data library module with these record data.
The record data that 2-2, host data library module will be deleted send to semipermanent link block with DS_DEL_SPC primitive.
2-3, semipermanent link block are received DS_DEL_SPC primitive, check message, port data legitimacy, after the passed examination, the network of the D channel between dismounting MNT, MLT, B1 channel, B2 interchannel connects, discharge each time slot handle, send to MNT, MLT respectively and remove D channel, B1 channel, B2 channel command.
3, the semipermanent time-out handling process of MNT/MLT comprises the steps:
Pausing operation is carried out to the semipermanent linkage record in the inside that has been provided with in 3-1, backstage, and these record data are passed to the host data library module.
The record data that 3-2, database module will be suspended send to semipermanent link block, and semipermanent link block sends SPC_UP_STOP (time-out) message to the port controlling module.
After 3-3, port controlling module receive SPC_UP_STOP message, check message, port data legitimacy, after the passed examination, the network of the D channel between dismounting MNT, MLT, B1 channel, B2 interchannel connects.U mouth message transparent transmission is suspended.
4, the semipermanent time-out of MNT/MLT recovers handling process, comprises the steps:
4-1, backstage are carried out the semipermanent connection in the inside that has been provided with and are suspended recovery operation, and these record data are passed to the host data library module.
The record data that 4-2, database module will be recovered send to semipermanent link block, and semipermanent link block sends SPC_UP_RESTORE (suspend and recover) message to the port controlling module.
4-3, port controlling module receive SPC_UP_RESTORE message, check message, port data legitimacy, after the passed examination, whether the time slot handle of the D channel of inspection MNT, MLT, B1 channel, B2 channel exists, if do not exist, the time slot handle of application respective channel links D, B1, the B2 passage of MNT/MLT.
5, the semipermanent dismounting handling process of MNT/MLT comprises the steps:
Dismantling operation is carried out to the semipermanent connection in the inside that has been provided with in 5-1, backstage, and these record data are passed to the host data library module.
The record data that 5-2, database module will be removed send to semipermanent link block, and semipermanent link block sends SPC_UP_RELEASE (dismounting) message to the port controlling module.
5-3, port controlling module receive SPC_UP_RELEASE message, check message, port data legitimacy, and after the passed examination, the network of removing initial equipment and end device connects, and discharges the time slot handle, issues to veneer and tears the time slot order open.
6, the semipermanent connection processing flow process of MNT/MLT, this flow process is the inverse process of semipermanent dismounting handling process, comprises the steps:
Attended operation is carried out to the semipermanent connection in the inside that has been provided with in 6-1, backstage, and these record data are passed to the host data library module.
The record data that 6-2, database module will be removed send to semipermanent link block, and semipermanent link block sends SPC_UP_CHECK (inspection) message to the port controlling module.
6-3, port controlling module receive SPC_UP_CHECK message, check message, port data legitimacy, after the passed examination, check whether initial equipment and end device time slot handle exist, if do not exist, apply for corresponding time slot handle, and time slot is linked.And issue channel slot networking order to veneer.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (7)
1. a method of transmitting information between the Digital Data Net network is characterized in that, comprising:
Transparent u interface is set on the DSL veneer, disposes described DSL veneer and make it work in multiplexed network terminal MNT and multiplexel circuit terminal MLT mode, all comprise D passage, B1 passage and B2 passage among described MNT and the MLT;
The first separate Digital Data Net DDN network all links to each other with described DSL veneer respectively with the second Digital Data Net DDN network, and link to each other with the integrated services digital network isdn network by described u interface respectively, a described DDN network and the 2nd DDN network transmit information mutually by described isdn network.
2. according to the described method of between the Digital Data Net network, transmitting information of claim 1, it is characterized in that:
Set up inner semipermanent the connection respectively between the D passage of the D passage of described MNT, B1 passage, B2 passage and MLT, B1 passage, the B2 passage.
3. according to the described method of between the Digital Data Net network, transmitting information of claim 2, it is characterized in that:
Difference configuration process flow process between described MNT and MLT, this handling process comprises that semipermanent setting handling process, semipermanent deletion handling process, semipermanent time-out handling process, semipermanent time-out recover at least one in handling process, semipermanent dismounting handling process and the semipermanent connection processing flow process.
4. according to the described method of between the Digital Data Net network, transmitting information of claim 2, it is characterized in that:
The ISDN main frame is that D passage, B1 passage and the B2 passage among described MNT and the MLT respectively applied for a time slot, described MNT is according to 64Kbits/s or 128Kbits/s or 144Kbits/s speed access basic rate access BRA data, and described MLT is according to 64Kbits/s or 128Kbits/s or 144Kbits/s speed access BRA data.
5. according to claim 1,2, the 3 or 4 described methods of between the Digital Data Net network, transmitting information, it is characterized in that:
The information of described DDN network to isdn network, is carried out transparent transmission by the M channel transfer in the u interface in isdn network.
6. according to the described method of between the Digital Data Net network, transmitting information of claim 5, it is characterized in that:
The ISDN main frame is transmitted the message in the described M channel, and the message of forwarding comprises that C/I channel command, C/I channel command are replied, embedd operations channel EOC order, EOC data, embedd operations channel EOC order data are replied, M4 path message and M5/6 path message.
7. a network connection device is characterized in that, comprising:
DSL veneer: be used for providing to external world a transparent u interface, by pass-along message between this u interface and the external world, the message that receives is passed to the device talk module, and this veneer works in MNT mode and MLT mode, all comprises D passage, B1 passage and B2 passage among MNT and the MLT;
Semipermanent link block: be used for setting up inner semipermanent the connection respectively between the D passage, B1 passage, B2 passage at the D of MNT passage, B1 passage, B2 passage and MLT, the link information of setting up is passed to the port controlling module, and respectively apply for a time slot for D passage, B1 passage and B2 passage among MNT and the MLT;
Device talk module: be used between DSL veneer and port controlling module, transmitting various message;
The port controlling module: be used to preserve the time slot handle of D passage, B1 passage and B2 passage, according to the link information that semipermanent link block passes over, the message that the device talk module is passed over passes to target port.
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| CNB2005100986007A CN100421411C (en) | 2005-09-06 | 2005-09-06 | Method and apparatus for transmitting information between digital data net and network |
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| CNB2005100986007A CN100421411C (en) | 2005-09-06 | 2005-09-06 | Method and apparatus for transmitting information between digital data net and network |
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| CN1863128A CN1863128A (en) | 2006-11-15 |
| CN100421411C true CN100421411C (en) | 2008-09-24 |
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| CN1287454A (en) * | 1999-09-08 | 2001-03-14 | 广州市高科通信设备有限公司 | Digital data network for paging stations in different area |
| US20040190491A1 (en) * | 2003-03-26 | 2004-09-30 | Rolls-Royce Plc. | Control system |
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