CN1167417A - S12 exchanger timing supply method and system thereof - Google Patents

Abstract

The present invention discloses a timing supply method for S12 exchanger and its system. It is characterized by that on the synchronous network node the synchronous signal of main exchange is received by exchanger firstly, and the jitter being in the synchronous signal is filtered off by said exchanger, and said exchanger can provide synchronous signal for all communication facilities. Said system includes exchanger, sub-machine frame, PC machine and synchronous digital series clock distribution portion added in the exchanger. Said synchronous digital series clock distribution portion (SCDA) is designed into a special-purpose module compatible with clock distribution board (CLTD). Said input signal of SCDA module is provided by (CLTD module. Said system uses existent exchanger to deliver synchronous signal, and can integrate exchange and supply into one body.

Description

S12 exchanger timing supply method and system thereof

The present invention relates to transferring of digital information, be meant a kind of S12 exchanger timing supply method and system thereof that is used for digital communication equipment especially.

As everybody knows, the development of high-speed data service and broadband services, must be based upon on the synchronous basis of net, how produce desirable synchronizing clock signals and sort signal is provided and all communication equipments is exported the problem that synchronization clock mass monitors paid attention to by manufacturer always to be connected (DXC) communication equipment such as digital SPC exchange (SWITCH), signalling system No.7 switching (STP), multiplexing equipment (MUX), digital synchronization series (SDH), digital crossover more easily.Existing communication equipment need external synchronizing signal provide by comprehensive regularly feed system (BITS) independently.Its supply method is: independently regularly feed system at first receives the synchronizing signal that main station sends from the Synchronization Network node, through regularly supplying after system handles, the desirable clock signal of reallocating out is given above-mentioned all communication apparatus, as U.S. AUSTRON3800 type time signal generator, a kind of timing feed system comes to this.This timing feed system (BITS) is though can provide clock signal to above-mentioned communication equipment, but must outside existing communication equipment, increase by a cover optional equipment again, and need special personnel go to safeguard, moreover the costing an arm and a leg of import, as generally using in the whole nation with supporting, its investment tool is big.Can utilize and have that to change this independent clock supply method and propose corresponding regularly feed system at a large amount of S12 switches that net uses be that pendulum is waited the problem that is situated between and determines in a urgency in face of each specialized vendor now.

The purpose of this invention is to provide a kind of S12 exchanger timing supply method, a kind of timing feed system for realizing that this method is made is provided simultaneously, and this method and system can utilize and have the S12 switch that uses at net now and provide clock sync signal to all communication apparatus under the situation that does not influence the work of S12 switch.

Go back clock output parameter in energy measurement and the monitoring Synchronization Network simultaneously, read clock operating state and alarm also have statistical function.

To achieve these goals, the present invention adopts following timing supply method: the S12 switch receives from the next synchronizing signal of main station from the Synchronization Network node, shake in the clock module filtering synchronizing signal of switch is also exported desirable synchronizing signal, be regularly that feed system offers other all communication apparatus use by the switch double as again, we claim that this timing feed system is a regularly feed system (S12BITS) of S12 switch.S12 switch regularly feed system (S12BITS) includes S12 digital SPC exchange, handset machine frame, PC, also is provided with clock and sound module (C﹠amp in the S12 switch; T), clock distribution plate module (CLTD), multiprocessing monitoring modular (MPTMON), in the S12 switch, be provided with together step number word series clock distribution part (SCDA), SCDA is designed to special module, compatible fully with clock distribution plate (CLTD) module plug in the switch, SCDA module input signal is provided by the CLTD module on the switch F frame.

The timing feed system that has adopted S12 exchanger timing supply method and this method of root a tree name to make owing to the present invention, can utilize existing switch, saved original independently timing feed system, be one structurally with original switch, must special configuration feed system independently, make this timing feed system when not influencing switch work, clock signal to be provided and to measure the clock output parameter of monitoring in the Synchronization Network to other communication apparatus at net.

Below in conjunction with drawings and Examples, the present invention is described in further detail:

Fig. 1 is that self timing feed system is supplied with all communication apparatus schematic block diagrams with synchronizing clock signals

Fig. 2 is that the present invention supplies with all communication apparatus schematic block diagrams with synchronizing clock signals.

Fig. 3 is a regularly feed system functional schematic block diagram of self.

Fig. 4 is clock distribution part of the present invention and switch annexation schematic diagram.

Fig. 5 is the principle of the invention, structural representation block diagram.

The implication of the following english abbreviation of this specification is described as follows:

Reference signal module-RSM

External Reference source module-ERS

Module-OIM is selected in input

Synchro measure module-SMM

Alarm indicating module-AIM

SDH clock distribution module-SCDA

Clock and sound module-C﹠amp; T

Clock distribution plate module-CLTD

Multiprocessing monitoring modular-MPTMON

See also shown in Figure 1, at present the independent timing supply method that generally adopts in each innings institute to provide synchronizing clock signals at the communication apparatus of netting for each, this method be with feed system independently from the upstream or the synchronous reference signal that comes of main station through the high resistant coupled modes, at first enter independent regularly feed system (BITS) and reallocate after treatment, as switch etc. to all communication apparatus.

See also shown in Figure 2, method of the present invention is on the basis of existing S12 switch, the S12 switch receives from the next synchronizing signal of main station from the Synchronization Network node, shake in the clock module filtering synchronizing signal of S12 switch is also exported desirable synchronizing signal, be regularly that feed system offers other all communication apparatus use by the switch double as again, as signalling system No.7 switching (STP), multiplexing equipment (MUX), digital synchronization series (SDH), digital crossover connects (DXC), working as usual of switch itself, unaffected, made full use of this condition that present node Synchronization Network much all has the S12 switch.In order to make the S12 switch synchronizing clock signals that regularly feed system provided have higher accuracy, the present invention can also make the clock signal of S12 switch can be locked on the clock of global positioning system (GPS), so that can provide accuracy higher synchronizing clock signals to all communication apparatus.Fig. 3 is equipped with the regularly general utility functions theory diagram of feed system (BITS) of self on the existing Synchronization Network node, this system provides synchronizing signal to all communication apparatus according to the described method of Fig. 1 exactly, its structure is by two inputs and auxiliary input module, two clock modules, two frame generators, two two 20 channel output modules, and central processing unit is formed, be by number a tree name two-way connections of bus between central processing unit and each module, input module can receive dissimilar reference signals and it is measured, clock module then provides internal reference signal for this signal generator, when the reference signal fault, they are as the standby clock source, frame generator produces formative time signal and goes to drive distribution module, output module receives the formatted signal from frame generator and output is provided, this equipment is totally independent of outside all communication equipments, rely on import, cost an arm and a leg, and will have people with profession skill to safeguard through training.

Please consult Fig. 4 and Fig. 5 again, system of the present invention includes S12 digital SPC exchange 1, handset machine frame 2, PC, is provided with clock and sound module (C﹠amp in the switch 1; T), clock distribution plate module (CLTD), multiprocessing monitoring modular (MPTMON), in addition, regularly feed system also contains together step number word series clock distribution part (SCDA), SCDA is the abbreviation of SDH C lock and ToneDistribution, SCDA also is arranged in the switch 1, SCDA is designed to special module, compatible fully with the plug of CLTD in the switch 1, the input signal of SCDA module is provided by the CLTD module on the switch 1F frame 11, the SCDA module is installed on the position of CLTD module frame 13 of any free time beyond the headstock 12, so concerning an exchange, its output regularly number is to select within the specific limits, at any time enlarge, can realize as long as insert a pair of SCDA module.

Be provided with reference signal module (RSM), External Reference source module (ERS), input selection module (OIM) in the handset machine frame 2, the RSM module is joined with ERS, OIM module respectively, the ERS module is connected with the OIM module is two-way, and the output of ERS module is connected to the C﹠amp in the switch 1; The T module, i.e. C﹠amp in the output signal of the ERS module locking control switch 1; The T module, global positioning system (GPS) receiver module and rubidium clock circuit Rb are arranged in the RSM module, the GPS receiver module receives gps signal by a reception antenna 21, GPS is connected to rubidium clock circuit Rb by receiving module output, rubidium clock circuit Rb output is connected to the ERS module, and the GPS receiver module produces standard signal and offers ERS and the use of SMM module.The ERS module can produce 2.048 M bit and two kinds of signals of 2.048 MHZ, and when the fault of all External Reference sources of switch, in return use in the External Reference source of machine.Input is selected module (OIM) 2.048 M bit conversion of signals can be become the output of 2.048 MHZ clocks and can be detected OOF signal (LOF), alarm indication signal (AIS) loss of signal (LOS), bipolar signal (BPV), redundancy check signal (CRC), multipotency detects 16 directions simultaneously, also can be recycled measurement with 16 direction clocks of this innings associated.

Regularly also be provided with synchro measure module (SMM) in the expansion slot 3 of the PC main frame of feed system, alarm indicating module (AIM), interface link block (ICM), the ICM module has with SMM module and AIM module respectively that data/address bus is two-way to be connected, the SMM module contains mixting circuit (MIXER), combiner circuit (SYNTH), counting circuit (COUNTER), mixting circuit (MIXER) respectively with the OIM module, the CLTD module, the unidirectional connection of SYNTH circuit, mixting circuit MIXER receives the OIM module, the CLTD module, the signal of SYNTH circuit, the SYNTH circuit produces 2.048 MHZ+ Δ F standard-frequency signals, this signal and measured signal are in the mixing of MIXER circuit and by the COUNTER circuit count, the output of rubidium clock circuit Rb is connected to combiner circuit STNTH and counting circuit COUNTER, SYNTH circuit, the COUNTER circuit receives the clock signal of rubidium clock circuit Rb.232 two-way connections of R S of multiprocessing monitoring modular MPTMON and link block ICM, the D of handset frame 2 and ICM

The two-way connection of 6Rs232 module.

In sum, above-mentioned switch 1, handset machine frame 2, all modules in the PC main frame add that corresponding software has constituted S12 switch of the present invention and regularly supplied system, software all is arranged in the main frame of PC can do following conclusion on the function of above-mentioned each module: S12 switch regularly feed system (S12BITS) includes clock distribution part (SCDA), clock is measured and service portion (CMM), CMM partly includes frequency measurement part (FMS) and clock service portion (CMS), FMS partly contains RSM, ERS, OIM, the SMM module, CMS partly contains AIM, the ICM module.The standard signal of RSM module output is connected to PC by cable, PC and standard serial port and S12 switch are finished the human-computer dialogue function, the measured clock signal is provided by CLTD module in the switch or OIM module, the parameters of clock, can measure in real time by the SMM module, outside the measurement data decapacitation printout immediately, also can deposit the C dish of people's PC or be sent to net management by synchronization center through interface x.25, when outside all of S12 switch during the fault of ginseng source, ERS provides the high accuracy reference signal of GPS, carry out the accurate synchronous communication in strange land, the OIM module can be carried out the timing parameter measurement of Real-time Alarm detection and order simultaneously to the circuit state of 16 directions.Synchro measure module (SMM) can the monitoring net synchronization node on the parameters of clock, as frequency f, clock frequency accuracy Δ f/f, time interval error TIE, maximum time interval error MTIE, time variance, ageing rate A ging, slip rate, clock frequency stability A llan V ariance, alarm indicating module (AIM) in the clock service portion (CMS) can be indicated outer ginseng source fault, the External Reference source degrades, clock work state and device alarm, except that the alarm Presentation Function, be applicable to the statistical function of management in addition, can finish daily sheet, weekly return, month form, and has sizable storage capacity, two serial ports that PC and handset frame 2 are arranged in the interface link block (ICM), man-machine dialogue interface between PC and the switch 1, and the x.25 interface that clock alarm and measurement result is sent to net management by synchronization center, certainly above-mentioned function realizes also must having in the PC and support and could move with the corresponding software of each module.

Claims (7)

1. S12 exchanger timing supply method that is used for digital communication equipment, it is characterized in that: the S12 switch receives from the next synchronizing signal of main station from the Synchronization Network node, shake in the clock module filtering synchronizing signal of S12 switch is also exported desirable synchronizing signal, is regularly that feed system offers other all communication apparatus use by the switch double as again.

2. the method for claim 1, it is characterized in that: the clock signal of S12 switch can be locked on the clock of global positioning system (GPS).

3. the timing feed system of making according to the described method of claim 1, it is characterized in that: this system includes digital SPC exchange (1), handset machine frame (2), PC, is provided with clock and sound module (C﹠amp in the switch (1); T), clock distribution plate module (CLTD), multiprocessing monitoring modular (MPTMON), in S12 switch (1), also be provided with together step number word series clock distribution part (SCDA), SCDA is designed to special module, compatible fully with clock distribution plate module (CLTD) module plug in the switch (1), SCDA module input signal is provided by the CLTD module on switch (1) the F frame (11).

4. feed system as claimed in claim 3, it is characterized in that: be provided with reference signal module (RSM), External Reference source module (ERS), input selection module (OIM) in the handset machine frame (2), the RSM module is joined with ERS, OIM module respectively, the ERS module is connected with the OIM module is two-way, and the output of ERS module is connected to the C﹠amp in the switch (1); The T module.

5. feed system as claimed in claim 4, it is characterized in that: in the RSM module in the handset machine frame (2) global positioning system (GPS) receiver module and rubidium clock circuit Rb are arranged, the GPS receiver module receives gps signal by a reception antenna (21), GPS is connected to rubidium clock circuit Rb by receiving module output, and rubidium clock circuit Rb output is connected to the ERS module.

6. feed system as claimed in claim 3, it is characterized in that: also be provided with synchro measure module (SMM), alarm indicating module (AIM), interface link block (ICM) in the expansion slot of PC main frame (3), the ICM module has with SMM module and AIM module respectively that data/address bus is two-way to be connected.

7. feed system as claimed in claim 6, it is characterized in that: synchro measure module (SMM) contains mixting circuit (MIXER), combiner circuit (SYNTH), counting circuit (COUNTER), mixting circuit (MIXER) respectively with OIM module, CLTD module, the SYNTH module is unidirectional is connected, the output of rubidium clock circuit Rb is connected to combiner circuit STNTH and counting circuit COUNTER.

Images