CN2365834Y - Intelligent manual long-distance exchange - Google Patents

Abstract

The utility model provides an intelligent manual long-distance trunk position, which is controlled by programming. The utility model is composed of a digital exchange system and a telephone traffic net. A bus platform is controlled by the utility model through a distributed modular structure, an MOVEL network and an open mode; warm backup is double-machine and double-net; joints are plenty; communication adopts HDLC protocol, power supplies are unified, etc. The utility model realizes manual control for the connection of computers by organic combination of various high technologies and information transmission rate without blocks can reach 100 Mb /s by the organic combination of various high technologies, the work is reliable, PMUX devices are omitted, intelligent management for the telephone traffic can be realized, the net combination is flexible, and the utility model is suitable for automotive communication and secure communication.

Description

The intelligence manual toll switchboard

The utility model relates to the Communications And Computer technical field, relates generally to the program control and manual closing operation in the telephone communication, specifically is a kind of intelligent manual toll switchboard.

The develop rapidly of the computer and the communication technology makes large, medium and small city and many units, department all change or install programme-controlled exchange, has realized automatic connection, makes remote information conversation become convenient and quick.But at some special occasions, operational commanding as army, railway transport administration, the public security classifed mail correspondence, disaster prevention and control commander and need carrying out under the situation such as secure communication, also must keep all multi-functional of manual closing operation, but, in communication today of prosperity already, these have the unit and the department of special requirement, at present mostly also still in the TMB trunk manual board that uses electromechanical, as the artificial long-distance equipment such as the JT-11 of preceding Shanghai of more than ten years new photoelectricity news instrument factory production, JT-14, this equipment or electromechanical switching equipment, it needs artificial route selection, the plug cord is handled under the call scenarios of several roads at the same time, needs artificial by the road line of sauntering, various relevant actions are manually finished by the operator, busy artificial plug, the speed that continues far can not be satisfied the needs of growing communication information amount, and workload is big, cause operator's fatigue, also make mistakes easily in busy tired, traditional in addition manually fills in, the distribution ticket, if the operator is careless handwriting or distribution mistake, the capital is caused to continue and is made mistakes, and affects the work adversely.Electromechanical equipment uses the logic control wire laying mode, needs to adopt a large amount of relays, and the frequent movement of relay, contact wear is except that needs are often done the accuracy adjustment, its reliability is poor, also can cause the noise height, poor working environment is switched through efficient and speech quality is poor, and can't automatic charging, retrospective installation is bulky in addition, and its accessory of back that is out of order all is difficult to buy, and the more difficult and modern program-controlled equipment of the old equipment of electromechanical links.At the domestic technical scheme that also has many producers to propose to solve this class problem of this situation, or produce corresponding apparatus, utilize two speeches of stored-program control exchange to add a data 2B+D interface as peaceful company and link to each other with the traffic network.Though realized some automatic functions, its telephone traffic is very low.And for example Tai Li electronics corporation utilizes the RS232 serial ports of computer to insert manual board, its speed is just slower, above situation is owing to the information exchange between artificial console and the stored-program control exchange can only be undertaken by the communication mode of original system, and its bus mode or be special line or for universal serial bus, its bus speed is lower, has only 144Kb/S or 19.2Kb/S, in addition, above-mentioned company product has all adopted PMUX equipment, the whole equipment of sound and PCM equipment etc., has increased cost and failure rate height by contrast.Utilize concentrator and distributor to realize that concentration ratio is 1: 4 or 1: 8, that is to say that each time slot allocation is to 4 users or 8 user ports, its each user port telephone traffic is 0.25Erl or 0.125Erl, this can satisfy fully to the general user, but concerning trunk junction circuit, the telephone traffic on each road is that 0.25Erl is just not much of that, when telephone traffic is big, tend to occur blocking, thereby speed is slow, it is untimely to continue, make network choking phenomenon etc. occur even, positive so-called " bottleneck " phenomenon.Simultaneously, because the user of universal exchange adopts the traffic mode of concentrating, therefore also can cause whole system to block.Adopt server in the traffic net, be placed in the server though computer software can be concentrated, the shareware resource, in case server is out of order, whole system will be paralysed, and this avoiding greatly of special-purpose manual toll switchboard just if meet the state of emergency, can affect major issue adversely.Moreover these equipment are not all broken away from, and manually having restricts continues, manually fill in, distribute ticket, the console classification is fixing, more can not carry out the automatic charging inquiry, print, a series of microcomputer traffic administrations such as intelligent configuration of traffic and scheduling are so these equipment also are difficult to satisfy actual needs.Also have some departments from external introducing equipment, as AT﹠amp; The toll of T and GPT company, these tolls are provided with independently switch system and traffic network, in fact it be still increases the artificial long-distance equipment of single cordless on existing local exchange basis, these equipment have the advanced in the world communication technology, intelligent degree is very high, but this wireless artificial long-distance equipment is pressed the particular switch design often, it is auxiliary device as certain class switch, adopt special interface and signal, versatility is poor, does not Chinesize in the operation of equipment interface, reach ripe refining use and also need suitable one section rubbing the phase of closing, thereby use inconvenience, and promptly enabling usefulness, the operating efficiency that continues is also very low, difficult in maintenance, and the equipment price costliness, there is not the leeway of function upgrading, it is difficult to improve upgrading.The more important thing is and lack special-purpose common-battery interface, satellite interface, magnetite interface, secret interface etc.The product flying letter 9000 artificial toll switchbroads of domestic good news company aim at Railway Design, and its is suitable for railway, and is still not exclusively suitable to army and Party and government offices.

In August, 1997 the utility model research institute once entrusted international online information retrieval center, Shaanxi by online information retrieval consulted " Chinese science and technology periodical data of optical disk storehouse " in the period of nineteen eighty-three～1997, " Chinese major scientific and technological achievement " (STAC), " Chinese patent database " 8 libraries such as (PATENT), retrieve 13 pieces in document altogether, wherein pertinent literature is 2 pieces, through contrast, look into new conclusion and have novelty for this theme.

To sum up, for realizing the program control stiff splicing that the industrial siding function is used two kinds of equipment that adds, can improve some traffic rates, but it is still two kinds of equipment, its amalgamation is poor, lack the systematization design, the most important thing is to exist " bottleneck " phenomenon, also not breaking away from manual toll switchboard simultaneously has the rope continuation method, along with development of Communication Technique, existing many departments and area are in the capital construction of planning and implementation communications service, as optical cable laying, trunk transit network construction etc.The foundation of the optical cableization of communication, digitlization and information superhighway, all in the appearance of calling novel artificial toll, the advance that objectively needs the digital program controlled phone of a kind of both tools the special equipment of manual toll switchboard function is arranged again, and both can be in co-ordination under the same system.The utility model is exactly at these field the deficiencies in the prior art, and with advanced person's program controlled switch technology, Digital Signal Processing information and distributing automatic control technology, new and high technologies such as computer networking technology comprehensively are melted into wherein, a kind of distributed modular structure of specialized systemization ground design, NOVELL network and open bus platform, the HDLC protocol communication, the transmission rate height, clog-free, automaticity is high, be suitable for motor-driven communication and secure communication and networking flexibility, and upgrading and the new business of possessing skills expansion is reserved, have and enrich interface, reliability is high, realizes that the manual operation computer control continues and the wireless intelligent manual toll switchboard of new digital formula of computer management traffic.

Below in conjunction with accompanying drawing the utility model is elaborated:

Fig. 1 is a general structure schematic diagram of the present utility model;

Fig. 2 is a DSN2 circuit composition frame chart of the present utility model;

Fig. 3 is a T electric wire connecting junction circuit diagram among the utility model DSN2;

The circuit diagram of Fig. 4 MCU7 of the present utility model, HDLC4, interface driving circuit 3;

Fig. 5 is an APU9 circuit block diagram of the present utility model;

Fig. 6 is the clocking scheme among the MPU in the main control processor of the present utility model;

Fig. 7 is the circuit block diagram of HDLC4 of the present utility model;

Fig. 8 is the circuit block diagram of MFC6 of the present utility model;

Fig. 9 is a satellite interface circuit block diagram of the present utility model;

Figure 10 is a magnetite user interface circuit block diagram of the present utility model

As shown in Figure 1, the utility model mainly is made up of digital exchange system and traffic net.Digital exchange system is designed to the general special use that adds, and comprises main control processor 1, digital switching network (DSN) 2, subsystem processes machine (APU) 9, digital relay interface circuit (DT) 8, analog interface circuit, interface driving circuit 3, Multiple Frequency Control circuit (MFC) 6, protocol controller (HDLC) 4, tone signal circuit (TONE) 5, Multi-Party Conference circuit (MCU) 7, hub (HUB) 13, bus and programme-controlled exchange mainframe etc.MFC6, HDLC4, TONE5, MCU7 all are public parts of system, and they all are made as double copies together with main control processor plate (MPU), DSN2 and bus.The utlity model has digital relay interface (DT) 8, long-haul carrier interface, operator circuit, also be provided with special-purpose magnetite interface, satellite speech path interface, common-battery interface.DT8 is made up of large scale integrated circuit, and forming digital trunk moudle (DM) 10, analog interface circuit disposes corresponding APU9 according to classification, joins one (APU) such as 56 all kinds of analog interfaces and forms a module (AM) 11, an AM11 can connect two HW lines, just 60 road transmission lines.The public part of these modules and MPU, DSN2 and system all is installed in the programme-controlled exchange mainframe with the form of circuit board.The programme-controlled exchange mainframe is the lamination tower structure, and its number of plies, size, specification all can increase and decrease the demand of capacity according to the user, and each circuit board is installed on respectively in each layer by slot, forms mainframe.Little in light weight because of its volume, be applicable to that motor-driven communication also can form a complete machine cabinet by some Single Cabinets according to the capacity needs.

The traffic net is artificial computer traffic net, is made up of terminal, and the Artificial Control computer continues, and is provided with chief operator's desk, maintenance management platform or control and monitor console to realize the monitoring of traffic administration and hardware device.Console 12 can be established 2-64, each console 12 all has network interface card, earphone microphone and operator's card, has the computer network winding thread to link to each other between console, promptly connects with twisted-pair feeder or coaxial cable by network interface card, adopt the HB hub-and-spoke configuration, be connected with DSN2 with main control processor 1.1 of console 12 and the main control processor cable of conversing in addition.

As shown in Figure 1, the control bus of main control processor 1 expands to the control isa bus of whole switching system, and the NOVELL network is being connected each console 12 by bus with HUB13.The MPU of main control processor 1, DSN2, the public part of whole system, each interface circuit that APU9 and toll are external etc., main control processor 1 and AM11, DM10 can be on the platform on the ISA control bus, simultaneously, all console 12 and AM11, DM10 can both become the port on the same control bus, main control processor 1 is made no exception them, put on an equal footing, the transmission of all can reaching the standard grade at any time of all information that are connected the various piece on the bus, this just makes bigger information capacity between main control processor 1 and the APU9, this bus structures also help new function and make the manual toll switchboard expansion and increase new module.Manual toll switchboard is connected with program controlled system, becomes the high digital intelligent manual toll switchboard of a kind of automaticity.

Digital exchange system is divided into two-stage control, and promptly main control processor 1 is first order control, and its main task is; Control whole switching system operation; Receive the various command that console is sent here in the traffic net; Send each digital and analog interface circuit state signaling-information to console; Send switching signal to each APU9, and above-mentioned each the interface circuit state transformation signal and the signal that continues.The second level is APU9, and APU9 is responsible for the reception of Stateful Inspection, control signal in the AM11 and transmission, according to the corresponding analog interface circuit action of the command driven of MPU.Separate between the AM11, but their APU9 all is based upon on the same Open Control bus, to form cross complaint communication.Main control processor 1 directly communicates by bus and DSN2 and APU9 and interface circuit, main control processor 1 and APU9 and then and analog interface circuit between information transmit and to be undertaken by the PCM transmission line, wherein 90% of the transmission line speech channel that is used for AM11 more than being takies the transmission line message transmission of remaining less than 10%.Such as between MPU and APU9.With the PCM transmission line of two-way 2M (totally 60 the tunnel), the user session of each AM11 can be 56 the tunnel at most, therefore voiceband user can take 56 time slots at most, remaining 4 the tunnel just are used for control information transmits, and do not establish special control line in addition, also but the much more control signal of transfer ratio General System is controlled whole switching system and even entire equipment work, and communications speed can reach 10Mb/s～100Mb/s.

An analog interface circuit distributes a time slot directly to connect corresponding substation, and digital interface circuit by PMUX equipment, directly is not connected with the private network stored-program control exchange, has saved investment, has reduced failure rate.Communicate by letter between each console and the MPU, not reliance server.Global design of the present utility model has solved the combination problem of program controlled system and manual board, makes the utility model realize clog-free and high-quality communication, has realized 1: 1 concentration ratio, and its telephone traffic can reach the 1Erl/ line.

The utility model adopts No. 1 signaling system of China, adopts unified dc supply.

Realization of the present utility model is that also digital exchanging network DSN 2 is as Fig. 1, Fig. 2, shown in Figure 3, digital time-division structure for single-stage T biplane intersects relates to MPU, HDLC4, MCU7, TONE5, MFC6, mainly includes T electric wire connecting junction 15, I/O interface unit 14 and interface driving circuit 3.The public part of circuit systems such as HDLC4 all is connected on the T electric wire connecting junction 15, sees HW0-5 among Fig. 1, and they are connected among HWI (HWO) 0-7 on the 0-5 among Fig. 3, and just the 0-5 of 8980 STI (STO) forms data and message transmission; One end of interface driving circuit 3 is linked T electric wire connecting junction 15, sees the HW6-HW15 among Fig. 1, sees HWI (HWO) 06,07 and HWI (HWO) 08-15 among Fig. 3 again, and the other end is connected to I/ O interface unit 14,14 and links to each other with industrial computer, sees Fig. 2.The external interface circuit of toll also is connected on the interface driving circuit 3, T electric wire connecting junction 15 is made up of the large scale digital exchange chip, the main body that 512 * 512 single T electric wire connecting junctions 15 are DSN2, see that Fig. 2 interface driving circuit 3 is intermediary interface of DSN2 and AM11, under APU9 control, finish between each user interface circuit and the DSN2 time slot corresponding semi-fixing continuing mutually, and be transferred to DSN2, to finish the voice-and-data exchange.16 road PCM primary group links also are connected on the T electric wire connecting junction 15 except that public part, see the HW6-HW15 among Fig. 1 and Fig. 2.HDLC4 is used for constituting the communication link between the main control processor 1 and each (APU9) in the digital exchange system, and as shown in Figure 7, timesharing communicates in a periodic manner, and MCU7 supports ten groups of Three-Way Callings; Physical circuit is seen Fig. 4, and TONE5 provides signal tone, and for example the ring-back tone heard of phone, busy tone etc. all have in all switches; MFC6 is used to finish the conversion and the control of interoffice digital signal; Interface driving circuit 3 provides standard interface and the long line driving force that DM10, AM11 and DSN2 are coupled to each other.

Realization of the present utility model is that also main control processor 1 is made up of industrial computer and main control processor plate (MPU), and MPU comprises the two net Hot Spare control units of interface driving control unit, timer/counter, expansion, alarm and indicator light circuit, system clock unit, tone signal circuit TONE5, module drive circuit and two-shipper etc.Be connected with bus by the I/O interface between industrial computer and MPU, interlock circuit all is connected on this bus path, and TONE5 is made up of microprocessor, digital tone signal generator and auxiliary circuit.Control section for switching system, circuit such as timing, expanding element, alarm indicating circuit, the switching of the two net of two-shipper, interface driving control unit are all arranged, for the utility model, system clock unit among the MPU is a key, and it provides various required clock signals for digital exchange system.System clock unit is made up of 32.768 crystal, two-divider, digital phase-locked loop, clock circuit output driving circuit and auxiliary circuit etc., as shown in Figure 6, the frame synchronization clock of output 2M clock and 8K, use for system, 1.2 ends of ZMT crystal oscillator output to frequency divider and carry out frequency division one time, and the output back is to phase-locked loop, carrying out the secondary frequency division again is 8K and 2M, send into 54HC244 and drive through 54HC244 and deliver on the HW bus, use, hold such as the C4I that delivers among Fig. 3 in 8980 for system.C4, F0, C2 end are clock end in each accompanying drawing.Digital phase-locked loop can work in the free oscillation mode, also can work in the method for synchronization.System clock meets the ST-BUS bus standard, precision height, good stability.TONE5 is a relatively independent part, sees HW1 among Fig. 1 and the HW1 among Fig. 3, and the signal tone that provides comprises 450Hz, 2100Hz, 2600Hz continuant, various audibles and tone-off sign indicating number.Interface driving circuit 3 is made up of the differential line driver with ternary output.

As shown in Figure 5, realization of the present utility model is that also APU9 relates to DSN2, TONE5, mainly comprise microprocessor unit 16, terminal interface unit (TCU) 20, module communication unit (MTU) 18, time slot allocating unit (TSA) 17, fault detect Alarm Unit (FDU) 19.Microprocessor unit 16 is made up of a monolithic processor, ROM, RAM, full address decoder, control-signals generator and I/O I/O change-over circuit, the full control signal that the work of control-signals generator generation system is required comprises READY signal, R/W signal, DS/E signal.Microprocessing unit 16 links to each other with T electric wire connecting junction 15 among the DSN2 and forms control and data/address bus, just is connected on the CONTROL BUS and DATA BUS among Fig. 3.TSA17, MTU18, TCU20 and FDU19 all are connected on this bus, as shown in Figure 5.TCU20 is used for finishing allocate memory and swept memory two parts function, allocate memory is deposited the control information that APU9 gives analog interface circuit, swept memory is to the information scanning of analog interface circuit, the information that scanning obtains provides APU9 to read, TSA17 is made up of calculator and distributor, the clock signal of 4MHz is given rolling counters forward after the frame synchronizing signal F0i of 8KHZ is synchronous, and produces the required various slot assignment signals of user interface circuit via distributor; FDU19 comprises testing circuit and alarm indicating circuit, testing circuit is monitored detected circuit under APU9 cooperates, in case measure fault, send to APU9 immediately and interrupt application, APU9 response post analysis fault location, report to MPU, and send alarm signal by FDU19, the content of detection comprises: system clock, ST-BUS bus and microprocessing unit 16; TCU20 provides and DSN2 standard interface and long line driving force.Its output directly meets the user, then directly meets 16 users such as 16 lines, just 1: 1 concentration ratio, and having embodied its telephone traffic is the 1ErI/ line, has realized non-blocking access, and greatly reduces failure rate.

Realization of the present utility model also is to have adopted High-Level Data Link Control HDLC telecommunication circuit, the communication protocol that adopts HDLC4 to realize module and intermodule is also arranged in digital switch, the utility model is used for the communication protocol of whole system such as the HW0 of Fig. 1 with it, see Fig. 7 and Fig. 4 again, the HDLC4 protocol controller is between DSN2 and MPU, have between HDLC protocol controller 4 and the MPU that data wire is two-way to be connected, see among Fig. 4 8952 D0-D7 data terminal among the HDLC, R/W from main control processor, CS, E, A0-3, the RST signal carries out unidirectional delivery to HDLC4, WD from HDLC4, IRQ application signal is to the MPU unidirectional delivery, it among Fig. 4 MT8952 is the I/O interface unit 14 that the 1STIO end is connected in DSN2 just that HDLC protocol controller 4 has the CDSTO signal, have again the CDSTi signal just 1STO return the HDLC protocol controller, this a pair of input-output line is the HW0 among Fig. 1 just, sees on the corresponding port that must be connected on HDLL protocol controller 4 from the clock and the frame clock signal of system clock plate that in addition C4I and F0 are the CKI input of the TM8952 among Fig. 4 among Fig. 7.The application of HDLC4 is like being a translater, and the information that it is given console 12 is translated into the information that DSN2 can discern, and the information that DSN2 is returned is translated into the information that console 12 can be discerned again, and agreement each side is all in accordance with this agreement concerning whole system.Its employing has realized bus platform, and promptly switching system and traffic net are unified in a bus platform.

Because system has increased digital relay interface, therefore, just must be equipped with conversion and the control that corresponding M FC6 finishes the interoffice digital signal, see Fig. 8, realization of the present utility model is that also MFC6 adopts digitized signal processing DSP technology, finishes the reception and the forwarding of various Multiple Frequency Controls.It relates to MPU and DSN2, the concrete connection between the two between it, MFC6 mainly comprises: digital signal processor DSP 21, digital signal receives RX and sends tx buffering device 22, timer, alarm and indicator unit and interface control unit, digital signal processor DSP 21 is finished the function of read-write generator and time slot signal generator, DSP21 and MPU have 8 bit data bus transmitted in both directions, reading from MPU is delivered to DSP21, the full signal of the sky of the RX buffer 22 that comes out from DSP21 send MPU, clock signal of system is connected on the DSP21, simultaneously, the clock signal of 8K and 2M is sent the digital relay interface among the DSN2, synchronous read-write buffer, receiving RX/ transmission tx buffering device 22 all is serially connected between DSP21 and the DSN2, read-write generator and time slot signal generator, also receive on the MPU, MPU connects the I/O interface and connects industrial computer again.For data and address bus, read-write and the plate of MPU selects signal that buffering is provided, the address correspondence that timeslot number that device takies is determined by address wire is received/sent out to multiple-frequency signal.The FMC6 plate can be handled 8 way word multiple-frequency signals simultaneously.

Realization of the present utility model is that also the external interface circuit of toll has digital relay interface circuit DT8 and analog interface circuit, and DM10 contains 1 DT8, is connected with 2 road PCM primary group links of DSN2 by interface driving circuit 3.The DT8 other end is that the E1 among Fig. 1 holds and the stored-program control exchange of local network joins, information promptly directly enters native system by the DT8 of 2M, cancel normally used PMUX equipment, the whole equipment of sound and PCM equipment at present programme-controlled, improved the traffic quality, greatly reduced equipment cost again.Analog interface circuit and APU9 form AM11, analog interface circuit divides two wires and four lines, four line analog interfaces have 2100HZ carrier interface circuit and operator circuit, the two wires analog interface circuit has the common-battery user interface circuit, magnetite user interface circuit (see figure 10), loop trunks interface circuit, satellite interface circuit (see figure 9) etc.The loop trunks circuit is connected with associated switch or local telephone network public network, can finish ring and detect, and anti-polar signal detects, simulation off-hook, automatic conversion etc.The satellite speech path interface meets satellite station, and the magnetite interface meets the magnetite user, and they provide various approach for special line communication, to guarantee reliability, the confidentiality of communication.And these also many just tolls are not available.The configurable 5-8 of a system module, i.e. a DM10 and 4-7 AM11, two wires analog module and four line analog module assembly arbitrarily, each DM10 can install 2 Digital Trunk Boards at most, every plate connects two road PCM (60 of digital junctions), sees that WH6 among Fig. 1, HW7 digital relay interface enter DSN2 through drive circuit 3; Each AM11 can install 4 blocks of analog interface plates, and every interface board can connect 16 tunnel users or repeat circuit.Satellite speech channel and loop trunks interface circuit mainly are made up of balance/ non-equilibrium unit 23,2/4 line converting unit 24, PCM coder 25, loop control unit 26 and ringing-current control unit 28 etc., see Fig. 9.Ringing-current control unit 28 and loop control unit 26 are connected across on the subscribers feeder, the output of the input of loop control unit 26 and ringing-current detecting unit 27 all meets APU9, balance/non-equilibrium unit 23 1 termination subscribers feeders, one end links to each other with 2/4 line converter unit 24,2/4 line converting unit 24 links to each other with PCM coder 25, PCM interpreter code device 25 carries out A/D with the signal between user and the DSN2, the D/A conversion, magnetite interface circuit similarly, see Figure 10, its ringing-current detecting unit 27 cross-over connections are on subscribers feeder, and ringing-current control unit 28 is serially connected between subscribers feeder and the balance/non-equilibrium unit 23.

When the utility model each several part is connected with bus, link to each other by corresponding interface circuits, main control processor 1 and DSN2, with FMC6 between all be to link to each other by the I/O interface circuit.

The all digital circuits of the utility model are used positive and negative 5V reference power supply, and analog circuit uses the 12V power supply.The DC power supply that equipment disposition is unified is in case when 220V civil power sudden power, system can guarantee non-stop run, the console 12 of main control processor 1 and traffic net all adopts microcomputer, microcomputer generally all uses AC power, be the reliability that improves, the unified inverter general-48V that adopts of the utility model becomes 12 work of AC220V AC power supply console, and during as the civil power sudden power, system still can run without interruption.MPU in the digital exchange system, DSN2, public part etc. all are designed to double copies stand-by heat formula, and shown in the A among Fig. 1, B, active and standby usefulness is worked simultaneously, when active and standby processor switches, can dropped calls, and also to guarantee the utility model reliably working.

Because the utility model is with advanced person's digital program controlled exchange, computer technology, high-speed local area network, Digital Signal Processing and technological synthesis such as control utilization automatically, adopt Open Control bus platform structure, advanced computer networking technology, reasonably having solved computer is connected with the technology of stored-program control exchange, adopt the HDLC protocol communication, the control of employing two-stage, the artificial follow-up call of computer, two net Hot Spares of two-shipper or the like, make overall unification of the present utility model, both satisfied the general digital program controlled reciprocal exchange of business, the special-purpose manual board of tool is all multi-functional again, it is high to become automaticity, have and enrich interface, traffic rate is up to 10Mb/s～100Mb/s, clog-free, speech channel is unblocked at any time, and upgrading and the new business of possessing skills expansion is reserved, when the 220V civil power cuts off the power supply, system still can run without interruption, be suitable for motor-driven communication and secure communication and networking flexibility, the reliability height, failure rate is low, has realized the wireless intelligent manual toll switchboard of new digital formula that the Artificial Control computer continues, the utility model also possesses the computer traffic administration simultaneously, intelligent high, alleviate operator's labour intensity greatly, eliminate noise, be convenient to detect, management and accident analysis, handle and maintenance compact conformation, volume is little, capacity is big, the ratio of performance to price is than advantages such as height.

Embodiment

The utility model each part mentioned above, each circuit connecting relation reaches shown in each relevant accompanying drawing as Fig. 1.

The MPU of main control processor 1 controls the operation work of whole device, send, reception is from console 12, DSN2, the various command of APU9, state and information, it has unified clock reference and synchronizes one's steps, corresponding signaling and tone signal generator are all arranged in the digital exchange system usually, network interface unit, time slot allocating unit, alarm, counting, detect, indicator unit, the two net switch control units of two-shipper, interface driving circuit and operator circuit or the like, because the utility model is custom-designed digital intelligent manual toll switchboard, clock circuit wherein must satisfy overall unified standard, clock circuit is that the 32.768MHZ crystal oscillator becomes 16.384MHZ through the 54HC74 frequency division and enters 8941 phase-locked loops, the frame synchronization clock that is divided into 2M clock and 8K uses for system, see Fig. 6, drive through 54HC244 and deliver on the bus.

Shown in Figure 3 is 512 * 512 single T electric wire connecting junctions 15 of DSN2.It is made up of 4 MT8980, can finish the clog-free exchange between 16 road PCM primary group links under main control processor control.

Tone signal generator TONE5 among the MPU comprises Intel8098 processor system and MT8920 and auxiliary circuit, and the TONE5 circuit takies the HW1 of DSN2.

System clock output comprises C2, C4 and F0.C2 is the 2MHZ clock, and C4 is 4MHZ, and F0 is the pulse of 8KHZ frame timing clock, sees shown in Figure 6.

The ST end speaking wire of a slice MT8980 connects the HW line, see Fig. 1,4 8980 in twos and connect (comprising input and output) and form 16 the tunnel, wherein 0-5 connects public part, 6,7 meet DT8,8-15 connects analog interface circuit, and CONTROL BUS control bus is from MPU, the equal connection interface drive circuit 3 of DATA BUS and ADDRESS BUS.

Come out to the PCM transmission line connection of MPU by two 2M from the HW line, it distributes as previously mentioned.

A slice MT8952 is a HDLC protocol controller of the present utility model as shown in Figure 4, and two MT8924 have formed Multi-Party Conference circuit MCU7, their every road pcm bus that takies DSN2.3 GAL16V8,74HC244,74HC245 have formed interface driving circuit 3, and the output of HDLC4 and MCU7 is all delivered to drive circuit after the output line INPUT of drive circuit is connected with MPU.

Terminal interface control unit TCU20 among the APU is made up of the MT8980-2 that works in information mode; Time slot distribution circuit TSA17 is made up of 54LS00,54HCL138,54LS161,54HCO4 etc.; Fault Control Alarm Unit FDU19 is made up of 54HH221,54HC123,54HC04 etc.; With the microprocessing unit 16 of 16 Intel8089 single-chip microcomputers as APU9, the control appliance of coupled total interface module all has similar hardware, and defines unified interface standard.

As shown in Figure 7, MFC6 has 8 cover multifrequency transceivers, adopts the SRM-976-2S2P chip, supports 2 way word multiple-frequency signals (receiving for 2 2) for every.The read-write generator is made up of two 54HC138, and the time slot signal generator is made up of two 54HC161 and a slice 54HC138.Crystal oscillator is made up of 20.48MHZ crystal and 54HC04.

Form the digital junction circuit with the MH89790B large scale integrated circuit, need not to carry out D/A, A/D conversion, realize that the equilibrium amplification of line signal and sign indicating number type recover, bipolar code and unipolar code are changed mutually, HDB ₃The mutual conversion of high density 2 ary codes and NRZ NRZ, clock signal is extracted, the search of frame swynchronization code and insertion, the extraction and the insertion of time slot TS16 signal, the buffering of 512bit and adjustment.

Each console 12 employing and digital exchange system unification-the 48V power supply, the utility model is in implementation process, technical indicator is with reference to the relevant technologies standard among GB GB9036.1～8--88 and the communication industry standard YD/T729-94 of the People's Republic of China (PRC), former device is all selected technical grade or army grade for use, through strict screening, make product can work in high and cold, hot environment.Technical indicator of the present utility model has in addition exceeded above standard, and no matter its telephone traffic is that toll trunk or special line all can reach 1 Ireland (Erl)/line.

1000 * 600 * 4600mm ³The programme-controlled exchange mainframe have six layers, such as third and fourth layer main usefulness, standby main control processor 1, DSN2 plate and DT plate, MFC plate, 12V and 5V Universal Power are installed respectively.Two wires or four line analog interface circuit plates must be installed in layering, but in one deck, but analog interface circuit plate kind flexible configuration, as: the 1-2 layer is installed the four-wire interface circuit board promptly in the mainframe: carrier-current relaying circuit board, operator circuit plate; The 5-6 layer is installed two wires analog interface circuit plate, common-battery user plate, magnetite user circuit board and loop trunks user plate, also need dispose APU and Universal Power at each analog trunk module layer, and every kind of circuit board is equipped with relay indicating light.So not only intuitively but also be convenient to safeguard, made system possess automatic monitoring and measuring function, and when fault, reported to the police automatically.

The novel work of this practicality is: all states on each outer line cap of switching system as show the spare time, take, breathe out, reply with information such as on-hook all by main control processor by the NOVELL network transmission to corresponding console 12, the operator gives MPU by the NOVELL network transmission again from the operational order that console sends, MPU controls each interface circuit action, thereby finishes various continuing.

As certain common-battery user off-hook, after corresponding APU9 detects this information, ring-back tone is sent to this user in the corresponding port of APU9 control common-battery interface circuit, simultaneously again by DSN2 off-hook information and common-battery Subscriber Number, give MPU, MPU passes to corresponding console 12 by the NOVELL net, make a certain ticket variable color of its display screen, and show this Subscriber Number, operator's operation keyboard will be replied instruction and be passed to MPU and APU9 by the NOVELL network, make its control DSN2 finish continuing of operator and this user's communication circuit, and cut off ring-back tone.After learning desired the other side of this user (carrier wave is long-distance, private network user, public network user, individual line subscriber etc.), the equal operable key dish of operator, the instruction that will continue is accordingly passed to MPU and APU9 by the NOVELL net again, control DSN2 finishes continuing between the related circuit port, sends call signal (the long-distance 2100HZ of being of carrier wave to the other side; The private network digital junction is a Multiple Frequency Control; The public network loop is a dual-tone multifrequency; Special line magnetite, common-battery are the 25HZ ringing-current), simultaneously the Graphic State at call peer just appears in console 12 display screen tickets.After the other side replied, figure promptly became on-state, and the operator can converse with the other side, and operation keyboard withdraws from then, can carry out the processing of other ticket more later on.Words are whole, and line is removed in user's on-hook automatically, and the display screen ticket restores to the original state.

Claims (8)

1, a kind of intelligent manual toll switchboard, has switch, the traffic net, DC power supply, it is characterized in that this equipment mainly is made up of digital exchange system and traffic net two large divisions, digital exchange system comprises: main control processor (1), digital exchanging network DSN (2), various analog interface circuits, subsystem processes machine APU (9), the digital trunk moudle DM (10) that comprises digital relay interface DT (8), interface driving circuit (3), and Multiple Frequency Control circuit MFC (6), HDLC protocol controller (4), tone signal circuit TONE (5), Multi-Party Conference circuit MCU (7), hub HUB (13), bus and programme-controlled exchange mainframe, DT (8) is made up of large scale integrated circuit, and formation digital trunk moudle DM (10), each analog interface circuit also is provided with magnetite except that the interface that general toll has, satellite, the common-battery interface, they form subsystem module AM (11) with corresponding subsystem processes machine APU (9) respectively, or perhaps analog module (11), HDLC protocol controller (4), tone signal circuit TONE (5), Multiple Frequency Control circuit MFC (6), Multi-Party Conference circuit MCU (7) all is public parts of whole system circuit, they and main control processor plate MPU, DSN (2), DM (10), AM (11) all is installed in the programme-controlled exchange mainframe with the form of circuit board, the traffic net is a computer traffic net, all consoles (12) are formed by terminal, its artificial follow-up call continues for the Artificial Control computer, each console of traffic net (12) is distributed network and connects, saved server, on each console (12) in the traffic net network interface card is installed all, and by bus and hub HUB (13) respectively with main control processor (1), digital exchanging network DSN (2), subsystem processes machine APU (9), digital relay interface (8) links to each other, bus is open ISA control bus and ST-BUS speech and data/address bus, that is to say that the NOVELL network connects all consoles (12) in the traffic net, main control processor (1), digital exchanging network DSN (2), the public part of circuit, AM (11) and DM (10), make whole toll form unified control plane and transfer bus, separate between each AM (11), but all be based upon on the same Open Control bus to form cross complaint communication, main control processor (1) is first order control, subsystem processes machine APU (9) is second level control, it is to lean on the PCM transmission line of the pulse code modulation of 2M to carry out that information between main control processor (1) and AM (11) and the DM (10) transmits, taking for the user session of each AM (11) more than 90% of total transmission line, the transmission line of remaining less than 10% is the control information transmission line, directly connect corresponding long-haul carrier circuit from analog interface circuit, automatic switch-board subscriber line circuit and power supply, the magnetite substation, discrepancy relaying to the private network stored-program control exchange, all connect, no longer by PMUX equipment by the digital relay interface circuit.

2, intelligent manual toll switchboard according to claim 1, it is characterized in that the digital time-division structure that digital exchanging network DSN (2) intersects for single-stage T biplane, relate to main control processor plate MPU, HDLC protocol controller (4), Multi-Party Conference circuit MCU (7), tone signal generator TONE (5), Multiple Frequency Control circuit MFC (6), it mainly includes T electric wire connecting junction (15), interface driving circuit (3) and I/O interface unit (14), the public part of HDLC circuit systems such as (4) all is connected on the T electric wire connecting junction (15), form the exchange and the transmission of data and information, one of interface driving circuit (3) terminates to T electric wire connecting junction (15), another termination I/O interface unit (14), (14) receive on the industrial computer, interface driving circuit (3) also meets each module DM (10) again, AM (11).

3, intelligent manual toll switchboard according to claim 2, it is characterized in that main control processor (1) is made up of industrial computer and main control processor plate MPU, MPU relates to interface driving circuit (3), comprise the interface driving control unit, system clock unit, timer/counter, expanding element, alarm and indicator unit, tone signal circuit TONE (5), and the two net Hot Spare switch control units of two-shipper, between industrial computer and MPU, be connected with bus by the I/O interface, the interlock circuit unit all is connected on this bus path, TONE (5) is by microprocessor, numeral tone signal generator and auxiliary circuit are formed, interface driving circuit (3) is made of the differential line driving/receiver of three-state output, the module drive circuit is arranged between MPU and module, and system clock unit is by 32.768 crystal, two-divider, digital phase-locked loop, compositions such as clock output driving circuit.

4, intelligent manual toll switchboard according to claim 3, it is characterized in that subsystem processes machine APU (9) relates to DSN (2), tone signal circuit TONE (5), include microprocessing unit (16), terminal interface unit TCU (20), module communication unit MTU (18) road, time slot allocating unit TSA (17), fault detect Alarm Unit FDU (19) and clock unit, T electric wire connecting junction (15) among microprocessing unit (16) and the DSN (2) links to each other time slot allocating unit TSA (17) by control with data/address bus, module communication unit MTU (18), terminal interface unit TCU (20) and fault detect Alarm Unit FDU (19) all are connected on the open bus.

5, intelligent manual toll switchboard according to claim 4, it is characterized in that having adopted High-Level Data Link Control HDLC protocol controller (4), HDLC protocol controller (4) is between DSN (2) and MPU, have between HDLC (4) and the MPU that data wire is two-way to be connected, R/W, CS, E, A0-3, RST signal from MPU carry out unidirectional delivery to HDLC (4), to the MPU unidirectional delivery, HDLC (4) has CDST from the WD of HDLC (4), irq signal _oSignal sends to DSN (2), and CDST is arranged again _iSignal returns HDLC (4), and clock and the frame clock signal from system clock unit must be connected on the corresponding port of HDLC (4) in addition, and Multi-Party Conference circuit MCU (7) is made of the Multi-Party Conference integrated chip of two special uses.

6, intelligent manual toll switchboard according to claim 5, it is characterized in that Multiple Frequency Control circuit MFC (6) relates to MPU and DSN (2), specifically connect between between the two, it mainly comprises: digital signal processor DSP (21), digital signal receives RX and sends tx buffering device (22), timer, alarm and indicator unit and interface control unit, digital signal processor DSP (21) is finished the function of read-write generator and time slot signal generator, DSP (21) and MPU have 8 bit data bus transmitted in both directions, deliver to DSP (21) from the reading signal of MPU, the full signal of the sky of the reception RT buffer (22) that comes out from DSP (21) send MPU, clock signal of system is connected on the DSP (21), simultaneously, the clock signal of 8K and 2M is sent DSN (2), synchronous read-write buffer, receiving RX/ transmission tx buffering device (22) all is serially connected between DSP (21) and the DSN (2), read-write generator and time slot signal generator are also received on the MPU, through I/O interface unit (14) to industrial computer.

7, according to claim 1 or 6 described intelligent manual toll switchboards, it is characterized in that the external various interface circuit of toll has digital relay interface circuit DT (8) and analog interface circuit, DT (8) is mainly by network interface unit, the digital junction controller, compositions such as clock unit and alarm indicator unit, DM (9) contains 1 DT (8), be connected with 2 road PCM primary group links of DSN (2) by interface driving circuit (3), analog interface circuit and APU (9) form AM (11), contain four analog interfaces among the AM (11), analog interface circuit divides two wires and four lines, four line analog interfaces have 2100Hz carrier interface circuit and operator circuit, the two wires analog interface circuit has the common-battery user interface circuit, the magnetite user interface circuit, the loop trunks interface circuit, satellite speech path interface circuit, satellite speech channel and loop trunks interface circuit are mainly by balance/non-equilibrium unit (23), 2/4 line converting unit (24), PCM coder (25), loop control unit (26) and ringing-current detecting unit (27) are formed, ringing-current detecting unit (27) and loop control unit (26) all are connected across on the subscribers feeder, the output of the input of loop control unit (26) and ringing-current detecting unit (27) is all received APU (9), balance/non-equilibrium unit (23) one termination subscribers feeders, one end links to each other with 2/4 line converting unit (24), 2/4 line converting unit (24) links to each other with PCM coder (25), the PCM coder carries out A/D with the signal between user and the DSN (2), the D/A conversion, magnetite interface circuit similarly, its ringing-current detecting unit (27) cross-over connection is on subscribers feeder, and ringing-current control unit (28) is serially connected between subscribers feeder and balance/non-equilibrium unit (23).

8, intelligent manual toll switchboard according to claim 7 is characterized in that the unified dc supply of whole device configuration.

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