CN1235441C - Semi permanent connection method of time division multiplex time gap in digital cross connection equipment - Google Patents
Semi permanent connection method of time division multiplex time gap in digital cross connection equipment Download PDFInfo
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- CN1235441C CN1235441C CN 02147469 CN02147469A CN1235441C CN 1235441 C CN1235441 C CN 1235441C CN 02147469 CN02147469 CN 02147469 CN 02147469 A CN02147469 A CN 02147469A CN 1235441 C CN1235441 C CN 1235441C
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Abstract
The present invention discloses a semipermanent connection method in a digital cross connection device. The method comprises the steps: firstly, an interface unit of a time slot exchanging bus and the time slot exchanging bus are arranged between a signal interface unit and a time slot service processing unit in the digital cross connection device (DXC); when time slots are exchanged, a signal with a time slot signal which needs to be converted is accessed to the signal interface unit and is converted into a signal of an exchanging network bus (HW), the HW signal is converted into a time slot signal through the interface unit of the time slot exchanging bus, the time slot signal is transmitted to the time slot exchanging bus to complete required time slot exchange, and a time slot signal of a finished exchanging result is converted into the HW signal by the corresponding interface unit of the time slot exchanging bus and is transmitted to the corresponding time slot service processing unit to process. The method is favorable for increasing the integrated level and the resource utilization efficiency of the whole system, and has the advantages of simple realization and low cost.
Description
Technical field
The present invention relates to the method for attachment of digital cross connect equipment (DXC, Digital Cross_ConnectionEquipment) inner time division multiplexing time slot (TDM).
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 in same equipment, only needing that this time slot is exchanged to corresponding time slot through the TSIU time slot interchange unit in this equipment gets final product, for example: in the time of finishing No. 5 time slots in the same equipment and the exchanges data between No. 9 time slots, the exchange schematic diagram as shown in Figure 1, the band arrow line is represented data flow, after promptly No. 5 time slots in this equipment are handled through TSIU time slot interchange unit, exchange on No. 9 time slots, delivering to corresponding LPU again handles, so just finished the time gas exchange in the same equipment, the interior semipermanent connection of TDM time slot of equipment that Here it is.
The above-mentioned DXC of utilization equipment can be realized the semipermanent connection of TDM time slot in the DXC equipment preferably, but because DXC is a kind of relatively large special equipment, need additionally in system, to increase a cover DXC equipment, reduced the integrated level of system, improved system cost, simultaneously, because DXC equipment both can be realized equipment room, also can realize the semipermanent connection of TDM time slot in the equipment, during the semipermanent connection of TDM time slot in only using this equipment realization equipment, must reduce the utilance of device resource.
Summary of the invention
The object of the present invention is to provide the semipermanent method of attachment of time division multiplexing time slot in a kind of digital cross connect equipment, use this method can improve the integrated level and the resource utilization of system.
For achieving the above object, the semipermanent method of attachment of time division multiplexing time slot in the digital cross connect equipment provided by the invention comprises:
Step 1: between signal interface unit in DXC equipment and the time slot link processing unit time gas exchange Bus Interface Unit and time gas exchange bus are set;
Step 2: the conversion of signals that contains needs conversion time slot signal that will insert signal interface unit becomes into switching network bus (HW) signal, described HW signal is converted to time slot signal through the time gas exchange Bus Interface Unit, more above-mentioned time slot signal is delivered on the time gas exchange bus;
Step 3: by exchange as a result the time slot correspondence the time gas exchange Bus Interface Unit from the time gas exchange bus, extract the time slot signal that needs conversion, with above-mentioned signal and time slot binding as a result, form time slot signal as a result, the The above results time slot signal is converted to the HW signal by time slot corresponding switching bus interface unit, delivers to corresponding time slot link processing cell processing.
Because the present invention adopts the method that time gas exchange Bus Interface Unit and time gas exchange bus are set between signal interface unit in DXC and the time slot link processing unit to realize that the semipermanent of TDM time slot in the DXC equipment is connected, compare with the semipermanent method of attachment of original TDM time slot, semipermanent connection with TDM time slot in the time gas exchange bus realization equipment, can improve the integrated level and the level of resources utilization of whole system, and realization is simple, cost is low.
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 first embodiment block diagram of using the method for the invention;
Fig. 3 is second embodiment block diagram using the method for the invention.
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.The present invention uses the time gas exchange bus to realize DXC (Digital Cross_Connection Equipment exactly, digital cross connect equipment) the semipermanent linkage function of TDM time slot in the equipment, be exactly to utilize the time gas exchange function of time gas exchange bus to replace the time gas exchange function of digital cross connect equipment DXC, the semipermanent connection of TDM time slot in the intact equipment specifically.
Be that H.110 bus, described signal interface unit are that the E1 signal interface unit is an example with the time gas exchange bus below, the present invention is described in further detail in conjunction with the accompanying drawings.
At first with reference to figure 2, Fig. 2 is first embodiment block diagram of using the method for the invention.In Fig. 2, signal interface unit of the present invention is the E1 interface chip on E1 interface unit # 1 and the E1 interface unit #2, and time slot link processing unit is link processing unit # 1 and link processing unit #2.Between above-mentioned signal interface unit and time slot link processing unit, time gas exchange Bus Interface Unit and time gas exchange bus are set.In Fig. 2, the time gas exchange Bus Interface Unit is the H.110 interface chip on E1 interface unit # 1 and the E1 interface unit #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 2, the time gas exchange of entire equipment part mainly is made of polylith E1 interface unit plate and link processing cell board.Based on above-mentioned setting, when carrying out conversion of signals, the conversion of signals that contains needs conversion time slot signal that inserts signal interface unit is become switching network bus (HW) signal, described HW signal is converted to time slot signal through the time gas exchange Bus Interface Unit, above-mentioned time slot signal is all delivered to again and finished the time gas exchange that needs on the time gas exchange bus, the time slot signal as a result that exchange is finished is converted to the HW signal by time slot corresponding switching bus interface unit and delivers to corresponding time slot link processing cell processing.The time gas exchange that needs of on the time gas exchange bus, finishing described here, be that the time gas exchange Bus Interface Unit of time slot extracts the time slot signal that needs conversion from the time gas exchange bus by exchanging as a result, with above-mentioned signal and time slot binding as a result, form time slot signal as a result again.
Be converted to example with time slot shown in Figure 2, suppose to finish the exchange of No. 5 time slots and No. 9 time slots, then No. 5 time slots are exactly the time slot that needs conversion, No. 9 time slot exchanges time slot as a result exactly, No. 5 time slot is handled by E1 interface unit # 1 plate, No. 9 time slot is handled by E1 interface unit #2 plate, certain road E1 signal that inserts at E1 interface unit # 1 plate then, the E1 interface chip that promptly contains this plate of signal process of needs conversion time slot signal converts switching network bus (HW to, High Way) behind the signal, finish the time slot conversion through the H.110 interface chip on this plate again, 32 time slots of all of this E1 signal will all be delivered on the H.110 bus, after E1 interface unit #2 plate extracts corresponding No. 5 time slots from H.110 bus, signal and No. 9 time slot bindings with No. 5 time slots, convert the HW signal to by interface chip H.110 again, deliver to this E1 interface unit plate link corresponding processing unit plate, promptly the link processing unit #2 among Fig. 2 carries out link processing.So just finished of the conversion of 5# time slot to the 9# time slot.Above-mentioned time slot data converted flows to:
The H.110 interface chip of H.110 interface chip → H.110 bus of the E1 interface chip of E1 signal → E1 interface unit # 1 → HW signal → E1 interface unit # 1 → E1 interface unit #2 → HW signal → link processing unit #2.
Adopting model with the H.110 interface chip on the E1 interface unit plate below is that the H.110 interface chip of ML53812 is an example, introduces the scheme of the semipermanent connection of TDMM time slot in the equipment in detail.With reference to figure 3.
H.110 the local side of interface chip ML53812 shown in Figure 3 can provide the access of the access of the access of 8 2Mbps HW signals or 4 4Mbps HW signals or 2 8Mbps HW signals that 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 equipment shown in Figure 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 the j time slot in 128 time slots of a 8Mbps HW signal entering on the i piece E1 interface unit plate (link corresponding processing unit plate is the i piece), exchange to the i bar data CT_D[i of H.110 bus by the H.110 interface chip ML53812 on this E1 interface unit plate] the k time slot, and this k time slot can not be handled by corresponding with it i piece link processing cell board, need give other link processing cell board and handle (be assumed to be the 1st link processing cell board, Dui Ying E1 interface unit plate is the 1st with it).So, control the 1st CPU (the Center Process Unit on the E1 interface unit plate by system board by command mode, CPU), dispose the reception configuration register of the H.110 interface chip ML53812 on this E1 interface unit plate by this CPU, with data wire CT_D[i] the K time slot exchange to the m time slot of certain bar HW of the local side of this ML53812 according to the exchange regulation of setting, and then deliver on the 1st link processing cell board and handle.So just finished by of the exchange of i time slot to the m time slot.
Above-mentioned time slot data converted flows to:
The data wire CT_D[i of the j time slot → H.110 bus of the Local side of interface chip of the E1 interface chip of 4 road E1 input → the i piece E1 interface unit plate → H.110] m time slot → the 1st link processing cell board processing of arrivals of HW signal of Local side of H.110 interface chip of H.110 side → 1st block E1 interface unit plate of H.110 interface chip of k time slot → 1st block E1 interface unit plate.
In a word, all time slots of each piece E1 interface unit plate all are input on the H.110 bus, realize the intercommunication of all time slots of all E1 interface unit plates, and each piece E1 interface unit plate can be delivered to link corresponding processing unit plate and handle according to taking out required time slot 4096 time slots of software arrangements from H.110 bus.Information after the link processing cell board is handled returns to the E1 path of appointment.So just realize on H.110 bus, realizing the method for DXC equipment time gas exchange function, promptly on H.110 bus, realized the semipermanent connection of TDM time slot in the equipment.
Claims (3)
1, the semipermanent method of attachment of time division multiplexing time slot in a kind of digital cross connect equipment comprises:
Step 1: between signal interface unit in digital cross connect equipment DXC and the time slot link processing unit time gas exchange Bus Interface Unit and time gas exchange bus are set;
Step 2: the conversion of signals that contains needs conversion time slot signal that will insert signal interface unit becomes switching network bus HW signal, described HW signal is converted to time slot signal through the time gas exchange Bus Interface Unit, more above-mentioned time slot signal is delivered on the time gas exchange bus;
Step 3: by exchange as a result the time slot correspondence the time gas exchange Bus Interface Unit from the time gas exchange bus, extract the time slot signal that needs conversion, with above-mentioned signal and time slot binding as a result, form time slot signal as a result, the The above results time slot signal is converted to the HW signal by time slot corresponding switching bus interface unit, delivers to corresponding time slot link processing cell processing.
2, the semipermanent method of attachment of time division multiplexing time slot according to claim 1 is characterized in that: described signal interface unit is European standard PCM primary group link (E1) interface unit.
3, the semipermanent method of attachment of time division multiplexing time slot according to claim 1 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 02147469 CN1235441C (en) | 2002-11-01 | 2002-11-01 | Semi permanent connection method of time division multiplex time gap in digital cross connection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02147469 CN1235441C (en) | 2002-11-01 | 2002-11-01 | Semi permanent connection method of time division multiplex time gap in digital cross connection equipment |
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| Publication Number | Publication Date |
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| CN1494352A CN1494352A (en) | 2004-05-05 |
| CN1235441C true CN1235441C (en) | 2006-01-04 |
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| CN 02147469 Expired - Lifetime CN1235441C (en) | 2002-11-01 | 2002-11-01 | Semi permanent connection method of time division multiplex time gap in digital cross connection equipment |
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| CN100370751C (en) * | 2005-01-14 | 2008-02-20 | 华为技术有限公司 | Method of broadcasting data through semi-permanent connection |
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