CN1283052C - Semipermanent joining method of time-division multiplexing time slot between devices in digital cross connection - Google Patents
Semipermanent joining method of time-division multiplexing time slot between devices in digital cross connection Download PDFInfo
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- CN1283052C CN1283052C CN 02148368 CN02148368A CN1283052C CN 1283052 C CN1283052 C CN 1283052C CN 02148368 CN02148368 CN 02148368 CN 02148368 A CN02148368 A CN 02148368A CN 1283052 C CN1283052 C CN 1283052C
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Abstract
The present invention discloses a semi-permanent connection method of the time-division multiplexing time slot between digital cross connection devices. The method has the following steps that firstly, a (HW) interface unit of a switched network busbar is arranged in digital cross connection devices (DXC); the HW interface unit is connected with a time slot interchanging bus in the devices; an interface circuit of the time slot interchanging bus is arranged on the HW interface unit, and subsequently, the devices DXC which are needed to carry out the time slot interchanging operation are connected by the interface circuit of the time slot interchanging bus arranged on the HW interface unit; thus, the semi-permanent connection of the TMD time slot is accomplished by the interface circuit of the time slot interchanging bus arranged on the HW interface unit on the mutual connected devices DXC. The TDM time slot interchanging function between the devices DXC accomplished by using the method has the advantages of less middle pathway, high reliability, simple hardware circuit and low cost.
Description
Technical field
The present invention relates to the method for attachment of time division multiplexing time slot (TDM) between the digital cross connect equipment (DXC, Digital Cross ConnectionEquipment).
Background technology
It is to realize channel bifurcated between the distinct interface, multiplexing physical layer equipment in the circuit-switched network that digital crossover connects (DXC) equipment, and DXC equipment can be realized the multiplexing of digital signals such as zero degree group, basic group, quadratic gropup, tertiary group, fourth order group and divide and use usually.
At common Signalling Transfer Point STP (Signaling Transfer Point, Signalling Transfer Point) in the system, DXC equipment is finished the branch of signaling message in relay system and is used and multiplexing function, signaling message then with block form at the link processing unit of DXC equipment (LPU, Link Process Unit) handles in, and finish route switching between the equipment by the frames in high speed switching plane.DXC equipment is realized above-mentioned routing and switching function by the semipermanent connected mode of time division multiplexing (TDM) time slot, data configuration by the backstage is set DXC equipment, the channel that guarantees each office direction is fixedly attached on the specific separately LPU, and each LPU just can finish the processing of respective links like this.
Semipermanent connected mode is the topmost mode that DXC equipment connects signaling link, characteristics such as controllability is strong, networking flexibility that it has, and it can realize the two-way connection between the plurality of devices.Semipermanent connection refers to physical channel unfixing between two users and links to each other, because the demand of data service or user's specific demand and the connection of long period of setting up between two users, establishment of connection is provided with by the manmachine command mode at exchanger side by the attendant of machine room usually.
When two time slots that participate in exchange are not in same DXC equipment, need TSIU time slot interchange unit and secondary switching plane in the DXC equipment to finish time gas exchange jointly.With Fig. 1 is example, finish the exchange between No. 9 time slots in equipment one interior No. 5 time slots and the equipment two, need in equipment 1, E1 interface unit, TSIU time slot interchange unit be No. 9 time slots with No. 5 time gas exchange, exchange to No. 9 time slots of equipment two again through the secondary switching plane of DXC equipment, through the TSIU time slot interchange unit of equipment two No. 9 time slots are delivered to the corresponding link processing unit then.The line of band arrow is represented data flow among Fig. 1, be after No. 5 time slots in the equipment one exchange to No. 9 time slots through the TSIU time slot interchange unit in these equipment, again by the secondary switching plane, deliver to the TSIU time slot interchange unit in the equipment two, giving equipment two interior link corresponding processing unit LPU again handles, so just finished the time gas exchange between distinct device, vice versa, the semipermanent connection of TDM time slot of Here it is equipment room.
The above-mentioned DXC of utilization equipment can be realized the semipermanent connection of TDM time slot of DXC equipment room preferably, but the time gas exchange of DXC equipment room need be finished by the secondary switching plane that DXC equipment provides, because DXC is a kind of relatively large special equipment, if the extra semipermanent connection of TDM time slot that in system, increases by a cover DXC equipment realization equipment room, will reduce the integrated level of system, improve system cost, but also can reduce the reliability that time slot connects.
Summary of the invention
The object of the present invention is to provide the semipermanent method of attachment of time division multiplexing time slot between a kind of digital cross connect equipment, use this method can improve the integrated level of system, reliability and the resource utilization that time slot connects.
For achieving the above object, the semipermanent method of attachment of time division multiplexing time slot between digital cross connect equipment provided by the invention comprises:
Step 1: in digital cross connect equipment DXC inside switching network bus HW interface unit is set, described HW interface unit is connected on the time gas exchange bus of device interior, and described HW interface unit is provided with the time gas exchange bus interface circuit;
Step 2: the DXC equipment that needs is carried out time gas exchange couples together by the time gas exchange bus interface circuit that is provided with on the HW interface unit;
Step 3: in above-mentioned interconnective DXC equipment, finish the semipermanent connection of TDM time slot by the time gas exchange bus interface circuit that is provided with on the HW interface unit.
Wherein, described step 3 further comprises:
Step 31: the conversion of signals that contains needs conversion time slot signal that will insert a device signal interface unit becomes switching network bus HW signal, and described HW signal is converted to time slot signal through the time gas exchange bus interface circuit;
Step 32: above-mentioned time slot signal is finished the time gas exchange that needs through the time gas exchange bus in this equipment, the time gas exchange bus interface circuit on the HW interface unit, time gas exchange bus interface circuit and the time gas exchange bus in the destination device on the HW interface unit in the destination device, and the time slot signal as a result that exchange is finished is converted to the HW signal by destination device time slot corresponding switching bus interface circuit and delivers to the corresponding service processing cell processing.
Wherein: in the described time gas exchange process of step 32, time slot extracts the time slot signal that needs conversion by exchanging as a result, with above-mentioned signal and time slot binding as a result, forms time slot signal as a result again.Wherein: described signal interface unit is European standard PCM primary group link E1 signal interface unit.
Wherein: described time gas exchange bus is computer and phone CT bus.
Because the present invention adopts the inner HW interface unit that contains the time gas exchange bus interface circuit that is provided with at DXC, and described HW interface unit is connected on the time gas exchange bus of device interior, like this, as long as needs being carried out the equipment of time gas exchange couples together by the time gas exchange bus interface circuit that is provided with on the HW interface unit, can in above-mentioned interconnective DXC equipment, finish the semipermanent connection of TDM time slot by the time gas exchange bus interface circuit that is provided with on the HW interface unit; Compare with existing method, by utilizing the time gas exchange function of time gas exchange bus, only can finish the time gas exchange function of equipment room with time slot switching bus interface chip, intermediate approach is few, the reliability height, and hardware circuit is simple, and cost is low; Therefore, employing the present invention realizes the semipermanent connection of TDM time slot of DXC equipment room, the integrated level and the level of resources utilization that can improve whole system.
Description of drawings
Fig. 1 is the interior semipermanent connection block diagram of TDM time slot of realizing of DXC equipment of using existing method;
Fig. 2 is the embodiment flow chart of the method for the invention;
Fig. 3 is the example block diagram of the semipermanent connection of DXC equipment of application drawing 2 described methods.
Embodiment
Along with the continuous development of time gas exchange bus and perfect, many TDM (Time DivisionMultiplex, time division multiplexing) the time gas exchange function can realize on the time gas exchange bus, using more at present, time gas exchange bus (time division multiplexing bus in other words) mainly contains CT (Computer Telephony, computer telephony) bus, it comprises MVIP-90 (MVIP, Multi-Vendor Integration Protocol, Multi-Vendor Integration Protocol), SC-BUS, bus (or being called H-BUS) etc. H.100/H.110.Be exactly total the present invention uses the time gas exchange bus and realizes DXC (Digital Cross_Connection Equipment with the time gas exchange bus interface circuit that this county is used, the semipermanent linkage function of equipment room TDM time slot digital cross connect equipment), be exactly to utilize the time gas exchange function of time gas exchange bus and time gas exchange bus interface circuit to replace the time gas exchange function of DXC specifically, finish the semipermanent connection of TDM time slot of equipment room.
The present invention will be further described below in conjunction with accompanying drawing.
Fig. 2 is the embodiment flow chart of the method for the invention.According to Fig. 2, at first carry out the first step, the DXC inside of carrying out the equipment room time gas exchange at needs is provided with the HW interface unit, on this HW interface unit, the time gas exchange bus interface circuit is set, be used for carrying out the TDM time gas exchange as the interface of the time gas exchange bus of DXC device interior, therefore described HW interface unit is connected on the time gas exchange bus of device interior.Carried out for second step then, the DXC equipment that needs is carried out time gas exchange couples together by the time gas exchange bus interface circuit that is provided with on the HW interface unit, with by above-mentioned connection, finishes the exchange of time slot and in the transmission of DXC equipment room.Based on above-mentioned connection, finish the semipermanent connection of the TDM time slot of DXC equipment room in the 3rd step.Described semipermanent connection realizes by the time gas exchange bus interface circuit that is provided with on the HW interface unit.
In the embodiment shown in Figure 2, the implementation of the semipermanent connection of described TDM time slot is: the conversion of signals that contains needs conversion time slot signal that will insert signal interface unit in the DXC equipment becomes the HW signal, and this HW signal is converted on the time gas exchange bus that time slot signal sends to this DXC device interior through the time gas exchange bus interface circuit on signal interface unit; Extract the time slot that needs exchange on the time gas exchange bus of time gas exchange bus interface circuit on the HW interface unit in this DXC equipment, again with this slot transmission time gas exchange bus interface circuit on the HW interface unit in the purpose DXC equipment, on the time gas exchange bus of the slot transmission that go out to need exchange by this circuit extraction in the destination device, thereby the time slot signal that will need exchange, the time slot signal as a result that exchange is finished is converted to the HW signal by destination device time slot corresponding switching bus interface circuit and delivers to the corresponding service processing cell processing.
In the time gas exchange process, time slot extracts the time slot signal that needs conversion by exchanging as a result, with above-mentioned signal and time slot binding as a result, forms time slot signal as a result again.
Be that H.110 bus, described signal interface unit in computer and phone (CT) bus is that European standard PCM primary group link (E1) signal interface unit is an example with the time gas exchange bus below, the realization details of 3 pairs of above-mentioned time gas exchange describes in conjunction with the accompanying drawings.
With reference to figure 3, Fig. 3 is the example block diagram of the semipermanent connection of DXC equipment of application drawing 2 described methods.In Fig. 3, described signal interface unit is the E1 interface chip on E1 interface unit # 1 and the E1 interface unit #2, and the time slot services processing unit is the Service Processing Unit among equipment # 1 and the equipment #2.Between above-mentioned signal interface unit and time slot services processing unit, be provided with time gas exchange bus interface circuit and time gas exchange bus.In Fig. 3, the time gas exchange bus interface circuit is the H.110 interface chip on the E1 interface unit among equipment # 1 and the equipment #2, and the time gas exchange bus is a H.110 bus.In actual applications, H.110 bus can be arranged on the backboard of equipment.In DXC equipment shown in Figure 3, the time gas exchange part of equipment room mainly is by the time gas exchange bus interface circuit on polylith E1 interface unit plate and business processing unit board and the HW interface unit # 1 that is provided with in equipment, the HW interface unit #2, and promptly the H.110 bus chip on the E1 interface unit in H.110 bus chip, the equipment constitutes.
Supposing need be with the Service Processing Unit of No. 9 time slots of No. 5 time gas exchange among the equipment # 1 in the equipment #2, then when carrying out the time slot conversion, the conversion of signals that contains needs conversion time slot signal of the E1 interface unit of access device # 1 is become the HW signal, described HW signal is converted to time slot signal through the H.110 bus chip on the E1 interface unit, again above-mentioned time slot signal is delivered to and finished the time gas exchange that needs on the H.110 bus, the time slot signal as a result that exchange is finished is the H.110 bus chip on the HW interface unit in the equipment # 1 again, H.110 bus chip on the HW interface unit in the equipment #2, and the H.110 bus chip in the equipment #2 continues to finish the time gas exchange that needs, and the H.110 bus chip of the time slot signal as a result that exchange is finished by equipment #2 correspondence is converted to the HW signal and delivers to corresponding No. 9 time slot corresponding service processing units.Time gas exchange described here is that the H.110 bus chip of time slot extracts the time slot signal that needs conversion by exchanging as a result, with above-mentioned signal and time slot binding as a result, forms time slot signal as a result again.
Adopting model with the H.110 interface chip on the E1 interface unit plate below is that the H.110 bus chip of ML53812 is an example, introduces the scheme of the semipermanent connection of TDM time slot of equipment room in detail.With reference to figure 3.
H.110 the local side of interface chip ML53812 shown in Figure 3 can provide access or the access of 4 4Mbps HW signals or the access of 2 8Mbps HW signals of 8 2Mbps HW signals, and the data wire (CT_D) of 32 8Mbps can be provided in the H.110 bus side.ML53812 can finish the exchange of 512 * 4096 time slots of local side and H.110 bus side, and wherein receipts/originating party is to each 256 * 4096 time slot, and the transmitting-receiving switching time slot is independent.
In Fig. 3,4 road E1 signals of E1 interface unit plate input are as one group, export one road 8Mbps HW signal through the E1 interface chip, arrive the local side of ML53812, by the transmitter register of configuration ML53812, ML53812 can all exchange to 128 time slots of this HW signal any time slot in 128 time slots of any data wire in the CT_D data wire of 32 8Mbps of H.110 bus.
Suppose that b time slot in 128 time slots of a 8M HW entering on a piece E1 interface unit by equipment # 1 will exchange on the service processing board of equipment #2 and handle, at first, the data of this time slot are exchanged to the CT_D[c of the c bar data wire of H.110 bus by the ML53812 on this E1 interface unit] the e time slot.The HW interface unit of equipment # 1 uses the ML53812 chip on this interface unit according to the configuration information of system, takes out this e time slot from H.110 bus, exchanges to the f time slot of the 8M HW of ML53812 according to the exchange regulation of setting.Pass through cable transmission then, the f time slot of this locality (Local) side of the ML53812 chip of the HW interface unit of the time slot arrival equipment #2 that is exchanged, the ML53812 chip is again according to location, system designated destination, with the g bar data wire CT_D[g of this time gas exchange to the H.110 bus of equipment #2] the h time slot, ML53812 chip on the E1 interface unit of target service processing unit takes out this time slot from H.110 bus, exchange to the i time slot of Local side, deliver on the purpose Service Processing Unit veneer by the HW passage of its Local side and Service Processing Unit veneer then, the equipment room time gas exchange is finished.Said a piece E1 interface unit, b time slot, c bar bus, e time slot, f time slot, g bar bus, h time slot, i time slot etc. are set according to exchange regulation in the above-mentioned time gas exchange process.Need explanation because in the reality to the demand difference of time gas exchange, described rule is own as required to be set, and forms configuration data then, the upper strata directly disposes according to configuration data and gets final product.
The signal flow of above-mentioned time gas exchange is to as follows:
The b time slot of a the E1 interface unit LocaL side of equipment # 1---the c bar data wire CT_D[c of equipment #1H.110 bus] e time slot---the f time slot of the Local side of the ML53812 of the HW interface unit of equipment # 1---cable transmission---the f time slot of the Local side of the HW interface unit of equipment #2---h time slot---i time slot of the Local side of the purpose E1 interface unit of equipment #2---the purpose Service Processing Unit of the H.110 bus side g bar data wire of the HW interface unit of equipment #2.With reference to the dotted line among the figure 3.Certainly, above-mentioned signal flow is to being two-way.
The solid element that above-mentioned signal flow is flowed through is:
The E1 interface unit of equipment # 1---the HW interface unit of equipment # 1---cable transmission---the target E1 interface unit corresponding service processing unit veneer of the HW interface unit of equipment #2---target E1 interface unit of equipment #2---equipment #2.
In a word, all time slots of each E1 interface unit all are input on the H.110 bus in the DXC equipment, realize the intercommunication of all time slots of all E1 interface units, and the HW interface unit can be according to taking out required time slot 4096 time slots of software arrangements from H.110 bus, deliver to the HW interface unit of relevant device, this HW interface unit is delivered to the time slot that receives on the H.110 bus again, is extracted by the E1 interface unit of corresponding service processing cell board correspondence and gives oneself and handle.Information after last Service Processing Unit is handled returns to the E1 path of appointment.So just realize the time gas exchange function of DXC equipment room, promptly realized the semipermanent connection of equipment room TDM time slot.
Claims (5)
1, the semipermanent method of attachment of time division multiplexing time slot between a kind of digital cross connect equipment comprises:
Step 1: in digital cross connect equipment DXC inside switching network bus HW interface unit is set, described HW interface unit is connected on the time gas exchange bus of device interior, and described HW interface unit is provided with the time gas exchange bus interface circuit;
Step 2: the DXC equipment that needs is carried out time gas exchange couples together by the time gas exchange bus interface circuit that is provided with on the HW interface unit;
Step 3: in above-mentioned interconnective DXC equipment, finish the semipermanent connection of TDM time slot by the time gas exchange bus interface circuit that is provided with on the HW interface unit.
2, the semipermanent method of attachment of time division multiplexing time slot according to claim 1 is characterized in that, described step 3 further comprises:
Step 31: the conversion of signals that contains needs conversion time slot signal that will insert a device signal interface unit becomes switching network bus HW signal, and described HW signal is converted to time slot signal through the time gas exchange bus interface circuit;
Step 32: above-mentioned time slot signal is finished the time gas exchange that needs through the time gas exchange bus in this equipment, the time gas exchange bus interface circuit on the HW interface unit, time gas exchange bus interface circuit and the time gas exchange bus in the destination device on the HW interface unit in the destination device, and the time slot signal as a result that exchange is finished is converted to the HW signal by destination device time slot corresponding switching bus interface circuit and delivers to the corresponding service processing cell processing.
3, the semipermanent method of attachment of time division multiplexing time slot according to claim 2, it is characterized in that: in the described time gas exchange process of step 32, time slot extracts the time slot signal that needs conversion by exchanging as a result, with above-mentioned signal and time slot binding as a result, forms time slot signal as a result again.
4, the semipermanent method of attachment of time division multiplexing time slot according to claim 2 is characterized in that: described signal interface unit is European standard PCM primary group link E1 signal interface unit.
5, according to the semipermanent method of attachment of claim 1,2,3 or 4 described time division multiplexing time slots, it is characterized in that: described time gas exchange bus is computer and phone CT bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02148368 CN1283052C (en) | 2002-11-11 | 2002-11-11 | Semipermanent joining method of time-division multiplexing time slot between devices in digital cross connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02148368 CN1283052C (en) | 2002-11-11 | 2002-11-11 | Semipermanent joining method of time-division multiplexing time slot between devices in digital cross connection |
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| Publication Number | Publication Date |
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| CN1499752A CN1499752A (en) | 2004-05-26 |
| CN1283052C true CN1283052C (en) | 2006-11-01 |
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| CN 02148368 Expired - Lifetime CN1283052C (en) | 2002-11-11 | 2002-11-11 | Semipermanent joining method of time-division multiplexing time slot between devices in digital cross connection |
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| CN106160915B (en) * | 2015-03-27 | 2018-09-25 | 深圳市汉易通讯有限公司 | A kind of data service branch apparatus and its shunt procedure |
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Granted publication date: 20061101 |