CN1110172C - Intelligent digit complex-connection system and net-composing method - Google Patents
Intelligent digit complex-connection system and net-composing method Download PDFInfo
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- CN1110172C CN1110172C CN 98108605 CN98108605A CN1110172C CN 1110172 C CN1110172 C CN 1110172C CN 98108605 CN98108605 CN 98108605 CN 98108605 A CN98108605 A CN 98108605A CN 1110172 C CN1110172 C CN 1110172C
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Abstract
The present invention relates to a communication technology which is especially suitable for an intelligent digital multiplexing system and a networking method. The intelligent digital multiplexing system is composed of a system control unit, a digital cross-connection unit, an E1 circuit interface unit, a ringing generator, a power circuit, a data interface unit, etc. The circuit interface unit converts an audio analog signal or a data signal to a PCM signal which is converted to an ST bus format signal through the circuit interface unit. Then the ST bus format signal is transmitted to the E1 interface unit after cross connection by a switching matrix and is multiplexed according to a CCITT E1 signal format so as to form a standard E1 signal. Compared with the prior art, the present invention has the advantages of networking flexibility, easy installation, high reliability, full function, etc.
Description
The present invention relates to a kind of mechanics of communication, be specially adapted to intelligent digital redundant system and network-building method thereof.
Along with development of Communication Technique; the user is also more and more higher to the requirement of communication; existing communication terminal can only be realized simple man-to-man communication; there are not functions such as network management function, various interconnection, various protections; make the system group network underaction; the cost height uses inconvenience is installed, and can not satisfy user's requirement.
The objective of the invention is in order to satisfy fast-developing and the needs of communication network and data communication flexibly day by day; economic, high performance serial intelligent digital loop component flexibly; a kind of Network Management Function that has has been proposed; networking capability; passage cross connect function, DROP/INSERT insert/tell, the straight-through function of BYPASS, the intelligent digital redundant system of the automatic route protection of circuit.
The objective of the invention is to realize by following technical solution:
The intelligent digital redundant system is by system control unit, the digital crossover linkage unit, the E1 line interface unit, ringing current generator, composition such as circuit and data interface unit, under the control of system control unit, the digital crossover linkage unit respectively with digital interface unit, the E1 line interface unit connects, line interface unit is finished and is converted audio analog signals or data-signal to the PCM signal, this signal converts ST bus format signal to through line interface unit, after switching matrix carries out interconnection, be sent to the E1 interface unit and carry out multiple connection, form the E1 signal of standard by CCITT E1 signal format; Simultaneity factor carries out the E1 signal to be sent to line interface unit after the interconnection through switching matrix, converts audio frequency or data-signal to by line interface unit, and the official seal flow-generator provides official seal stream signal to the E1 line interface unit.
The network-building method of intelligent digital redundant system is made up of webmaster computer and intelligent digital redundant system, be connected by the serial line interface of computer and the main website of system, main website is connected with other stations by the E1 interface, utilize the Spare bit of E1 to come the transmission network management signal, make whole network realize management by the computer of main website.
The present invention compared with prior art have to the net flexible, easy for installation, reliability is high, the congruent advantage of function.
Description of drawings of the present invention is as follows:
Fig. 1 is the composition frame chart of intelligent digital redundant system among the present invention.
Fig. 2 is the various cross-connection system schematic diagrames of intelligent digital redundant system of the present invention.
Fig. 3 is the composition frame chart of network-building method of the present invention.
Fig. 4 is software workflow figure of the present invention.
Fig. 5 is a kind of network structure that the present invention forms.
Fig. 6 is the ring-like catch net that the present invention forms.
Fig. 7 is the 64Kbit/S intersection attachment system that the present invention forms.
Below in conjunction with description of drawings the present invention is described in further detail: as shown in Figure 1, intelligent multiple connection hardware is formed.The intelligence redundant system is mainly by forming with lower unit:
1. system control unit (SCU)
2. digital crossover linkage unit (DXC)
3.E1 line interface unit (4E1)
4. power subsystem (POW)
5. ringing current generator (RG)
6. line interface unit, data interface unit
System control unit (System Control Unit) is the control and management core of this system, finish the control and the initialization of each unit of system, finish system management and network management, finish system's interconnection control, finish the control of passage and line testing, finish system's line concentration function and interior calling function etc.Simultaneously, this unit also provides 2 RS-232 interface, and one is used for communicating by letter with system network management, and another is connected with the ancillary equipment that possesses the serial monitor-interface.
The digital crossover linkage unit is mainly finished and the PCM telephone path signal is carried out the control of control, speech channel plate, database of time gas exchange, signaling bus and conference telephone the function and the control of network management path are set etc.The digital crossover linkage unit mainly is made up of set of number exchange matrix, under the control of microprocessor, realize any information (pcm stream of input on the ST bus, data-signal) exchanges to the output ST bus crack of when taking up an official post, microprocessor can read the content of any time slot from input ST bus, also can write information on any time slot of output ST bus, because the exchange matrix has these functions, realize the interconnection of PCM speech easily, exchanges data and the order and control each piece speech channel plate of from the ST-BUS bus, winning the confidence, database state etc., the signal of being handled by line interface unit is sent to digital crossover linkage unit (Digita1 Cross Connection) through ST-BUS and carries out interconnection, under the control of system control unit (System Control Unit), cross-connection unit can be finished various connected modes shown in Figure 2 by user's requirement.
E1 relay interface unit (E1 Trunk Interface) is finished the conversion of signals work after the interconnection of hanging oneself, the ST-Bus conversion of signals is become the E1 signal format of ITU-T at this, its interface meets G.703 specification requirement of ITU-T, the frame that the sub-frame of line interface unit is finished from the PCM digital signal of digital crossover linkage unit forms and code conversion, finishes relevant signal alarm detection and processing simultaneously.The speech channel multiple connection is partly finished from user's audio frequency or data-signal and is handled and multiple connection.
The line interface unit of available use has:
● FXS subscriber signaling interface
● FXO switch signaling interface
● E﹠amp; The M signaling interface
● in-phase data interface G.703
● data-interface V.24
● data-interface V.35
In line interface unit, finish the conversion of audio frequency and data-signal and call signaling signal, finish relevant passage and line test work simultaneously.
The E1 interface unit is mainly carried out following function:
The 2Mbit/s frame forms
Synch information extraction
The transmission of network management signals
The CRC redundancy check
The circuit transmission is balanced
Code conversion
The E1 interface unit is made up of following modules:
Line interface comprises circuit driver element and various analog interface and data-interface, and the circuit driver element provides circuit to drive and various timing signal.
Drive circuit, function are to data-signal, address signal, and timing signal, ST-BUS signal and chip selection signal etc. drive.
Timing signal for generating module, function are to produce required timing signal and the HDLC synchronous head of line interface unit.
Ring synchronizing signal generation module produces the ring synchronizing signal.
Line interface is finished the conversion between audio analog signals or data-signal and the PCM signal, and the conversion of each interface signal and route protection.
Power supply and ringing current generator (Ring ﹠amp; Power Supply) provides needed various DC power supply of system and ringing signal.
As shown in Figure 3, the network management of system is made up of webmaster computer and intelligent digital redundant system, be connected by the serial line interface of computer and the main website of system, main website is connected with other stations by the E1 interface, utilize the Spare bit of E1 to come the transmission network management signal, make whole network realize management by the computer of main website.
This part is based on the graphical interfaces network management system under Microsoft Windows NT and Windows 95 environment, is mainly used in system monitoring and control (comprising ancillary equipment), line testing, communication port distribution and maintenance management etc.In addition, also provide a cover portable network management system, to make things convenient for field adjustable and maintenance.Network management system is the graphical user interface interface network management system for system development, can finish work such as system's control, circuit allocation, line test and ruuning situation statistical management easily and effectively through this system user.0 network management system is operated under Microsoft Windows NT and Windows 95 environment, has following function and characteristics:
1. graphical interfaces is easy and simple to handle
2. system operation password protection
3. system's service data is added up
4. system's online help
Because system adopts the software control scheme, the control personnel of system can be provided with by the operational factor of network management system to equipment at network management center, and the operations staff need not on-site maintenance.
As shown in Figure 4, software systems are chief components of the present invention, and the repertoire of system realizes under the control of software that all systems soft ware is divided into following six parts:
1) initialization section
2) network management
3) scheduler program
4) system operational parameters hypervisor
5) system monitoring and fault-tolerant
System initialization is divided into:
1) MPU hardware initialization
2) external interface initialization
3) webmaster initialization
4) scheduler program initialization
Scheduler program
Each task module of system all moves under the control of scheduler program.Each task module is by down trigger, scheduler program dynamic call respective service program.
Network management
The management of MPU serial-port communication, the network management of system is the assurance of device intelligenceization, when system is connected to become than complicated topological structure, provides the correct transmission of order and correctly returning of replying, to realize the whole network monitoring.The fault-tolerant control of conversion, webmaster task scheduling and the link of the transmission of support, information of communication link and transfer, rules is finished in network management, corresponding to the agreement of low three layers of OSI.
The system operational parameters hypervisor
A series of handling procedures under the control of MPU Abort Timer are finished system mode and are handled, and system synchronization is handled, speech channel scans, E1 scans, common unit ID handles, speech channel unit ID handles.
System monitoring and fault-tolerant
WatchDog and abnormality processing realize that overtime mechanism realizes the fault-tolerant control to network management communication to the supervision of systems soft ware operation and fault-tolerant.
As shown in Figure 5, utilize native system can form diverse network.System can monitor whole network by the main website webmaster, configuration, and scheduling can be allocated the speech channel interconnection between each station, makes things convenient for user's Add/drop Voice Channel; The design back-to-back of saving each station is compared in the insertion of utilization uniqueness/tell function with original common PCM terminal, save cost.
As shown in Figure 6; system forms ring-like catch net; system can form various protecting network; utilize the speech channel protection and the gap protection function of system; realize the route protection of the special responsible consumer between each station, can walk A～B to B station user as A, and A～E～B; A～D～C～B～etc. route, when the path system that breaks down automatically this path is switched to its protection passage on.
As shown in Figure 7, form 64Kbit/S intersection attachment system.Utilize the E1 time slot interconnection of system, realize the time slot reorganization, improve channel utilization.
System have networking flexibility, easy for installation, reliability is high, the congruent advantage of function, can be widely used in public network, professional net.The user can select equipment flexibly according to the needs of oneself, can form stellate reticulum, tree type network and hybrid network.The Network Management Function of system can be provided with by network management system (nms) or portable maintenance terminal function and the parameter to system at central station.Therefore, the maintenance management personnel no longer need often to carry out to the scene regular maintenance, circuit arrangement, failure diagnosis etc., and except Network Management Function, SDN-9700 can monitor the operating state of equipment and signal equally.Simultaneously, can also the external equipment and the environment of system be monitored, measure and control.Functions such as CROSS CONNECT cross connect function, DROP/INSERT insert/tell in addition, BYPASS is straight-through are for applying in a flexible way of system provides convenience.
The present invention adopts latest integrated and computer technology design, and systemic-function is powerful, uses very flexible.In system, adopted many advanced persons' technology, having comprised: the network management system of digital crossover connection, the configuration of a circuit distant place, graphical interfaces (GUI) etc.
System also possesses following function and characteristics:
1. the intelligent digital loop transmission of full software control, management
2. audio frequency, data-interface A wide selection of colours and designs
3. electrical speech level, data channel speed all can be regulated and control in the distance
4. all (every equipment) passages or 2.048Mbit/s branch road all can be dispatched organization network as required at central station
5. Chinese and English graphical display network management system (under Windows NT environment, moving)
The systems network administration ability is by the intelligent node system of full software control, can be provided with by network management system (nms) or portable maintenance terminal function and the parameter to system at central station.Therefore, the maintenance management personnel no longer need often to carry out to the scene regular maintenance, circuit arrangement, failure diagnosis etc.Except Network Management Function, can the operating state of equipment and signal be monitored equally.
Claims (9)
1, a kind of intelligent digital redundant system, it is characterized in that by system control unit, the digital crossover linkage unit, the E1 line interface unit, ringing current generator, composition such as power circuit and data interface unit, under the control of system control unit, the digital crossover linkage unit respectively with digital interface unit, the E1 line interface unit connects, line interface unit is finished and is converted audio analog signals or data-signal to the PCM signal, this signal converts ST bus format signal to through line interface unit, after switching matrix carries out interconnection, be sent to the E1 interface unit and carry out multiple connection, form the E1 signal of standard by CCITT E1 signal format; Simultaneity factor carries out the E1 signal to be sent to line interface unit after the interconnection through switching matrix, converts audio frequency or data-signal to by line interface unit, and the official seal flow-generator provides official seal stream signal to the E1 line interface unit.
2, intelligent digital redundant system according to claim 1, it is characterized in that system control unit carries out the control and the initialization of each unit of system, carry out system management and network management, carry out system's interconnection control, carry out the control of passage and line testing, finish and carry out system's line concentration function and interior calling function etc.; And have 2 RS-232 interface, and one is used for communicating by letter with system network management, and another is connected with the ancillary equipment that possesses the serial monitor-interface.
3, intelligent digital redundant system according to claim 1, it is characterized in that the digital crossover linkage unit exchanges matrix by set of number and forms, under the control of microprocessor, realize that input information on the ST bus exchanges to the output ST bus crack of when taking up an official post, microprocessor can read the content of any time slot from input ST bus, also can write information on any time slot of output ST bus; The digital crossover linkage unit mainly carries out the PCM telephone path signal is carried out control, the speech channel plate of time gas exchange, signaling bus, the control and the conference telephone setting of database.
4, intelligent digital redundant system according to claim 1 is characterized in that being sent to the digital crossover linkage unit by the signal that line interface unit is handled through ST-BUS carries out interconnection.
5, intelligent digital redundant system according to claim 1, it is characterized in that the E1 interface unit is made up of line interface, timing signal for generating module, ring synchronizing signal generation module, line interface comprises circuit driver element and various analog interface and data-interface, the circuit driver element provides circuit to drive and various timing signal, the timing signal for generating module is to produce required timing signal and the HDLC synchronous head of line interface unit, and ring synchronizing signal generation module is to produce the ring synchronizing signal.
6, a kind of network-building method of intelligent digital redundant system, it is characterized in that forming by webmaster computer and intelligent digital redundant system, be connected by the serial line interface of computer and the main website of system, main website is connected with other stations by the E1 interface, utilize the Spare bit of E1 to come the transmission network management signal, make whole network realize management by the computer of main website.
7, the network-building method of intelligent digital redundant system according to claim 6 is characterized in that network management comprises initialization part, network management, scheduler program, system operational parameters hypervisor and system monitoring and fault-tolerant control.
8, the network-building method of intelligent digital redundant system according to claim 6 is characterized in that system initialization is divided into: the MPU hardware initialization; The external interface initialization; The webmaster initialization; The scheduler program initialization; Each task module of system all moves under the control of scheduler program, and each task module is by down trigger, scheduler program dynamic call respective service program.
9, the network-building method of intelligent digital redundant system according to claim 6, the network management that it is characterized in that system is the management of MPU serial-port communication, when system is connected to become than complicated topological structure, provide the correct transmission of order and correctly returning of replying, to realize the whole network monitoring; The fault-tolerant control of conversion, webmaster task scheduling and the link of the transmission of support, information of communication link and transfer, rules is finished in network management, corresponding to the agreement of low three layers of OSI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98108605 CN1110172C (en) | 1998-05-06 | 1998-05-06 | Intelligent digit complex-connection system and net-composing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98108605 CN1110172C (en) | 1998-05-06 | 1998-05-06 | Intelligent digit complex-connection system and net-composing method |
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| Publication Number | Publication Date |
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| CN1234667A CN1234667A (en) | 1999-11-10 |
| CN1110172C true CN1110172C (en) | 2003-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 98108605 Expired - Fee Related CN1110172C (en) | 1998-05-06 | 1998-05-06 | Intelligent digit complex-connection system and net-composing method |
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| CN101577765B (en) * | 2009-05-12 | 2011-10-12 | 北京佳讯飞鸿电气股份有限公司 | Line multiplexed communication equipment based on twisted pair, system and network thereof |
| FI20135462L (en) * | 2013-05-03 | 2014-11-04 | Tellabs Oy | Mesh elements in software-defined mesh |
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1998
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| CN1234667A (en) | 1999-11-10 |
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