CN1194546A - Signal matching equipment for exchanging signal between anolog exchanging system and digital exchanging system - Google Patents
Signal matching equipment for exchanging signal between anolog exchanging system and digital exchanging system Download PDFInfo
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- CN1194546A CN1194546A CN98105614A CN98105614A CN1194546A CN 1194546 A CN1194546 A CN 1194546A CN 98105614 A CN98105614 A CN 98105614A CN 98105614 A CN98105614 A CN 98105614A CN 1194546 A CN1194546 A CN 1194546A
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Abstract
A signal matching apparatus for exchanging signals between a digital switching system and a two-wire long distance subscriber line signal switching system comprises a first PCM equipment for converting a 4-wire E1 signal of the digital switching system into a 4-wire analog signal, and for connecting a 4-wire analog signal of the long distance subscriber line signal switching system into a 4-wire digital signal transferred to the digital switching system, and a second PCM equipment for converting the 4-wire analog signal of the first PCM equipment into a 2-wire signal, and for converting the analog signal of the long distance subscriber line signal switching system into a 4-wire analog signal transferred to the first PCM equipment.
Description
The present invention relates to a kind of simulation switching system and digital exchange system of making and mate equipment with switching signal between this two system.
Usually, the simulation switching system is provided in a side of the manual switching system that is not equipped with the rural area network that utilizes the master network be located at the urban district.The simulation switching system uses the rural area network to provide session services by connecing the central exchange office that is located at apart from simulation switching system several hundred kilometers to the remote subscriber through the long distance subscriber line signal of pipe.
Illustrate the schematic diagram of simulation two-wire long distance subscriber line network configuration referring to Fig. 1.Simulation switching system 10 users' off hook signal sends the input/output device of posting a letter (T Д AN) 12 of artificial switching station to, convert off hook signal to seizing signal sends the simulation switching station to by amplifier (k-12) 14,16 I/O transmitting device 18 by device 12.Amplifier (k-12) 14,16 must according to intend crossing apart from amplifying signal.Simulation exchange I/O transmitting device 18 converts seizing signal to corresponding off hook signal and sends central exchange office ATC20 to, gives simulation exchange I/O transmitting device 18 Sending dialled number sounds by ATC20 by busy line.
Then, simulation exchange I/O transmitting device 18 converts dialing tone to and accounts for machine confirmation signal (machine that accounts for is confirmed) accordingly by amplifier 14,16 send artificial exchange I/O transmitting device 12 to, again the machine confirmation signal of accounting for are converted to the calling subscriber that dial tone sending is given manual switching system 10 by device 12.After this, the calling subscriber transfers to and to want the number dialled, and the numerical data of number sends simulation exchange output/output transmitting device 18 to by artificial exchange I/O transmitting device 12 and sends central exchange office ATC20 again to.ATC20 analyzes numerical data so that calling subscriber and collection of letters user are coupled together.If collection of letters user free, TAC20 goes into/exports transmitting device 18 just for simulation exchange defeated 2 and sends ring-back tone, and device 18 converts ring-back tone to the not busy attitude signal of collection of letters user again and sends artificial exchange I/O transmitting device 12 to by amplifier 14,16.At last, manually exchange I/O transmitting device 12 and become ring-back tone to pass to the calling subscriber the not busy attitude conversion of signals of collection of letters user, thereby form the conversation path.This is the widely used general rural area of network, a Russian rural area internet exchange system.
Therebetween, for making simulation switching system and digital exchange system cooperating, the simulation switching system needs PCM (pulse-code modulation) 30-4A/D (mould/number) transducer.Yet, this system is owing to be by known R1, the design of R2/CAS signal system, thereby can not be used for rural area network system shown in Figure 1, therefore need a signal translating system simulation switching system of general use in digital exchange system and the rural area network system is complementary.
The purpose of this invention is to provide a kind of signal matching system that digital exchange system and the simulation switching system that adopts two-wire long distance subscriber line signal are complementary.
The present invention comprises a PCM device and the 2nd PCM device in order to the Signal Matching equipment of switching signal between digital exchange system and two-wire long distance subscriber line signal exchange system, the one PCM device becomes 4 line analog signals in order to 4 line E1 conversion of signals with digital exchange system, become 4 line digital signals to send digital exchange system to 4 line analog signal conversion of long distance subscriber line signal exchange system, the 2nd PCM device becomes double-wire signal in order to 4 line analog signal conversion with a PCM device, becomes 4 line analog signals to send a PCM device to the analog signal conversion of long distance subscriber line signal exchange system.
Referring now to the accompanying drawing of only enclosing, is described more specifically the present invention with the form of giving an example.
Fig. 1 is the block diagram of simulation two-wire long distance subscriber line network.
Fig. 2 is that explanation will be simulated the block diagram that two-wire long distance subscriber line switching system and digital exchange system couple together according to the present invention.
Fig. 3 is the schematic diagram of explanation the present invention step of processing signals when digital exchange system is called out the user of simulation switching system.
Fig. 4 is a signal by the wavy curve figure of the present invention when digital exchange system sends.
Fig. 5 is the schematic diagram of explanation the present invention step of processing signals when the simulation switching system is called out the user of digital exchange system.
Fig. 6 is a signal by the wavy curve of the present invention when the simulation switching system sends.
Referring to Fig. 2.The effect of long signal processor controls 100 be the E1 conversion of signals of digital exchange system is become the simulation needed circuit/register signal of switching system in case with two-wire long distance subscriber line Signal Matching, and analyze circuit/register signal of being received.CDT1102 converts the circuit register signal to 4 line E1 digital signals when digital exchange system 110 is called out the two-wire long distance subscriber line.
The one PCM device (A Д 011) 104 is made up of PCM 30-4, and its effect is that the circuit register 4 line digital signals with CDTI 102 convert 4 line analog signals to and send 4 lines/biplexer (JIA 12) 106 to.And become digital signal to send digital exchange system 110 to the analog signal conversion of A conversion system.106 in the 2nd CPM device (JIA 12) will be simulated 4 line conversion of signals and be become double-wire signal to send workman's switching station I/O sender (T Д H И) 12 to, and convert the double-wire signal of artificial switching station I/O sender (T Д H И) 12 to 4 line signals and send a PCM device 104 to.Artificial switching station I/O sender 12 converts off hook signal to seizing signal and sends simulation switching station I/O sender (T Д HB) 18 to by amplifier K-12, and 18 in sender converts seizing signal to off hook signal and sends central exchange office ATC20 to.ATC20 transmits the plan sound for corresponding busy line and simulation switching station I/O sender 18.In addition, ATC20 analyzes the dialed digit signal so that be connected with collection of letters user.
Specify the matching operation process referring to Fig. 2 to Fig. 6 below.
User's the situation of the customer call long distance subscriber line handshaking of digital exchange system 110 at first, is described referring to Fig. 3.Such keep " 0 " signal of digital exchange system 110 shown in the period B of Fig. 4, and convert the off hook signal that the user CG of digital exchange system 110 produces to seizing signal and be added on the PCM device 104, convert seizing signal to digital signal by a PCM device 104 and send the 2nd PCM device 106 to.The 2nd PCM device 106 converts digital seizing signal to the two-wire off hook signal and sends artificial switching station I/O sender 12 to.Converting off hook signal to seizing signal by sender 12 sends simulation to by amplifier K-12 and hands in I/O sender 18.In the case, amplifier K-12 is according to posting a letter apart from amplifying signal.
Simulation switching station input/defeated sender 18 converts seizing signal to off hook signal and sends the central exchange office ATC20 that is located at the urban district to.ATC20 gives simulation switching station I/O sender 18 Sending dialled number sounds by corresponding busy line, and 18 in sender converts dialing tone to and accounts for machine confirmation signal (machine that accounts for is confirmed) and send artificial switching station I/O sender 12 to by amplifier K-12.
Artificial switching station I/O sender 12 will account for the machine confirmation signal and convert dialing tone to and send digital exchange system 110 to by the 2nd a PCM device 106 and a PCM device 104, and system 110 gives the calling subscriber dial tone sending again.Then, the calling subscriber transfers to and to want the number dialled, digital exchange system 110 is just given the first and second PCM devices 104 and 106 Sending dialled number pulses according to this number, shown in the period C of Fig. 4, send simulation switching station I/O sender 18 by device 104 and 106 to by artificial switching station I/O sender 12 again and send ATC20 again to.ATC20 analyzes digital signal, so that calling subscriber CG and collection of letters user CD are coupled together.In the case, digital exchange system 110 keeps " 0 " attitude, shown in the period D of Fig. 4, makes bright talking state.When finishing conversation, digital exchange system 110 keeps one state, shown in the period E of Fig. 4, distinguishes idle condition.Like this, when the customer call of digital exchange system 110 is simulated switching system, during the customer call of digital exchange system 110 simulation switching system, digital exchange system 110 distinguishes that all the time the first and second PCM devices 104 be made up of PCM-30-4 and 106 state are one state.
Secondly, the user's of the customer call digital exchange system 110 of long distance subscriber line signal exchange system ATC20 situation once is described.The ATC20 dialing bell signal that the user CD of ATC20 is next sends corresponding busy line to, sends ring-back tone to calling subscriber C.Bell signal sends simulation switching station I/O sender 18 to, and sender 18 sends bell signal to artificial switching station I/O sender 12 by amplifier K-12 again.
Artificial switching station I/O sender 12 is added to bell signal on the 2nd PCM device 106.Then, the first and second PCM devices 104 and 106 convert bell signal to digital bell signal, signal value claims that 1.5 in the clock be " 0 ", in 4 seconds be " 1 ", as shown in Figure 6, and sending it to digital exchange system 110, system 110 converts digital bell signal to 25 hertz bell signal sound again and sends collection of letters user CG to.As the response to bell signal sound, if collection of letters user CG mentions receiver and transmitter and makes it enter off hook state, digital exchange system 110 transmits reply signal (reply signal) just for a PCM device 104.
The first and second PCM devices 104 and 106 conversion of signals of will replying becomes off hook signal to send artificial switching station I/O sender 12 to, and sender 12 converts off hook signal to seizing signal again and sends simulation switching station I/O sender 18 to by amplifier K-12.Simulation switching station I/O sender 18 converts seizing signal to off hook signal and sends central exchange office ATC20 to, by ATC20 the collection of letters user CG of calling subscriber CD and digital exchange system 110 is coupled together.When receiving off hook signal, digital exchange system 110 keeps " 0 " states, as Fig. 6 in addition shown in, and distinguishing that order wire gets one state after connecting by a PCM device.
Like this, effectively utilize the PCM-30-4A/D transducer and made the Signal Matching of the signal and the two-wire long distance subscriber line signal imitation switching system of digital exchange system, thereby can need not cost aspect the setting up of the design of signal converter and other device.
Claims (2)
1. Signal Matching equipment, the usefulness for switching signal between digital exchange system and two-wire long distance subscriber line signal exchange system comprises:
The one PCM device becomes 4 line analog signals in order to 4 line E1 conversion of signals with described digital exchange system, becomes 4 line digital signals to send described digital exchange system to 4 line analog signal conversion of described long distance subscriber line signal exchange system; With
The 2nd PCM device becomes double-wire signal in order to 4 line analog signal conversion with a described PCM device, becomes 4 line analog signals to send a described PCM device to the analog signal conversion of described remote subscriber signal exchange system.
2. Signal Matching equipment, in order to switching signal between digital exchange system and two-wire long distance subscriber line signal exchange system, it is characterized in that the PCM-30-4A/D transducer is connected between described digital exchange system and the long distance subscriber line signal exchange system so that can switching signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98105614A CN1194546A (en) | 1997-03-14 | 1998-03-14 | Signal matching equipment for exchanging signal between anolog exchanging system and digital exchanging system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR8613/97 | 1997-03-14 | ||
| CN98105614A CN1194546A (en) | 1997-03-14 | 1998-03-14 | Signal matching equipment for exchanging signal between anolog exchanging system and digital exchanging system |
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| Publication Number | Publication Date |
|---|---|
| CN1194546A true CN1194546A (en) | 1998-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98105614A Pending CN1194546A (en) | 1997-03-14 | 1998-03-14 | Signal matching equipment for exchanging signal between anolog exchanging system and digital exchanging system |
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| CN (1) | CN1194546A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336362C (en) * | 2001-11-30 | 2007-09-05 | 大卫·马修·史密斯 | Method and apparatus for bypassing the common control and switch matrix of a digital switching system |
-
1998
- 1998-03-14 CN CN98105614A patent/CN1194546A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336362C (en) * | 2001-11-30 | 2007-09-05 | 大卫·马修·史密斯 | Method and apparatus for bypassing the common control and switch matrix of a digital switching system |
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