CN203788420U - Digital stored program control exchange E1 networking system - Google Patents
Digital stored program control exchange E1 networking system Download PDFInfo
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- CN203788420U CN203788420U CN201420149187.7U CN201420149187U CN203788420U CN 203788420 U CN203788420 U CN 203788420U CN 201420149187 U CN201420149187 U CN 201420149187U CN 203788420 U CN203788420 U CN 203788420U
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Abstract
The utility model discloses a digital stored program control exchange E1 networking system which comprises a master end digital stored program control exchange and slave end digital stored program control exchanges. The master end digital stored program control exchange comprises more than two groups of E1 plates. Each E1 plate comprises a master end E1 master control module, a master end E1 control module, a master end E1 communication module and a master end E1 interface. The slave end digital stored program control exchanges are connected with the E1 plates of the master end digital stored program control exchange in a one-to-one corresponding manner. Each slave end digital stored program control exchange comprises a slave end E1 master control module, a slave end E1 control module, a slave end E1 communication module and a slave end E1 interface. The slave end E1 interfaces are connected with the master end E1 interfaces through a coaxial cable. According to the utility model, a signal content is transmitted in a common channel signaling mode; a number of digital stored program control exchanges are combined; and on the premise that the previous equipment input is not wasted, the capacity of each exchange is expanded, and multi-spot free call is realized.
Description
Technical field
The utility model relates to data switching exchane technical field, relates in particular to a kind of digital SPC exchange E1(30 road pulse-code modulation) group network system.
Background technology
Further growth along with expanding economy and company, telephonic communication has been brought into play indelible effect in people's work, yet, the digital SPC exchange of low capacity can not meet existing scale personnel's needs far away, bring many inconvenience to people's office, such as many people, share under the situation of same extension, if when wherein having a clerical workforce to carry out telephonic communication by extension set, all the other clerical workforces under same extension cannot call by the extension set at corresponding seat simultaneously, now, if all the other clerical workforces are not by utilizing the mode of mobile phone to obtain and exchange with the personnel that need contact in time, will certainly affect the efficiency of work, cause unnecessary time loss, and the words of carrying out communication by mobile phone mode, will produce certain communication fee, if change existing small-scale Program Controlled Exchanger, adopt more jumbo switching equipment, waste previous equipment investment, thereby cause the waste of cost.
Utility model content
Main purpose of the present utility model is to provide a kind of digital SPC exchange E1 group network system, being intended to solve existing low capacity Program Controlled Exchanger cannot meet on the basis of work at present personnel demand, and under the prerequisite of the equipment investment before not wasting, expand the capacity of Program Controlled Exchanger, realize the problem of multiple spot no-charge call.
For achieving the above object, a kind of digital SPC exchange E1 group network system, comprise the main side digital SPC exchange being connected with external telephone wire and be connected with described main side digital SPC exchange from end digital SPC exchange, wherein,
Described main side digital SPC exchange comprises E1 plate more than two, and described E1 plate comprises main side E1 main control module, main side E1 control module, main side E1 communication module and main side E1 interface,
Described main side E1 main control module, for to processing from the call information of end digital SPC exchange extension set, also for to sending calling from end digital SPC exchange extension set;
Described main side E1 control module, is connected with described main side E1 communication module with described main side main control module, the call information sending for receiving main side main control module, and call information is changed to the described main side of rear control E1 communication module and carry out E1 communication; The call information from end extension set also receiving for receiving described main side E1 communication module, feeds back to described main side main control module and processes;
Described main side E1 communication module, is connected with described main side E1 control module, sets up link connection while communicating by letter for E1; Also for E1 signal is carried out to no-load speed transmission;
Described main side E1 interface, mates for the E1 signal to sending and receiving;
The described E1 plate from end digital SPC exchange and described main side digital SPC exchange connects one to one, comprises from end E1 main control module, from end E1 control module, from end E1 communication module with from end E1 interface,
Described from end E1 main control module, for the call information of main side digital SPC exchange extension set is processed, also for sending call information to main side digital SPC exchange extension set;
Described from end E1 control module, be connected from end E1 communication module with described from end main control module with described, for receiving the described call information from end main control module; Also, for receiving the described outside line receiving from end E1 communication module or the call information of main side extension set, feed back to described from holding main control module to process;
Described from end E1 communication module, be connected from end E1 control module with described, for E1 signal is carried out to no-load speed transmission;
Describedly from end E1 interface, be connected with described main side E1 interface, while communicating by letter for E1, set up link connection; Also for the E1 signal to sending and receiving, mate.
Preferably, described main side E1 main control module comprises:
Master cpu, for the treatment of outside line or from holding the call information of digital SPC exchange extension set; Also for controlling and detect the Content of Communication of described main side E1 communication module;
Memory cell, is connected with described master cpu, for the data of master cpu are carried out to exterior storage;
Extended addressing unit, is connected with described master cpu, for expanding the address signal of master cpu;
Monitoring unit, is connected with supervisory control comuter with described master cpu, for monitoring main side stored-program control exchange operating state.
Preferably, described main side E1 control module comprises:
Buffer cell, is connected with described main side E1 communication module, for E1 signal is cushioned;
Logic conversion unit, is connected with described main side E1 communication module, for E1 signal is carried out to logical transition;
Indicating member, is connected with described main side E1 communication module, for E1 loss of carrier, E1 synchronization loss and E1 Link State are carried out to alarm indication.
Preferably, described main side E1 communication module comprises:
Communication unit, is connected with described E1 control module, for the signaling call information of sending and receiving communication; Also for distributing the passage of voice call.
Preferably, described main side E1 interface comprises:
Interface socket, is connected from end E1 interface with described, for main side digital SPC exchange with from holding digital SPC exchange to set up E1 signal, be connected;
Matching unit, is connected with described interface socket, the E1 signal receiving for docking port socket carry out rate-matched;
Overvoltage protecting unit, is connected with described matching unit, for the E1 signal that matching unit is transmitted, carries out overvoltage protection.
Preferably, described main side E1 interface is connected by coaxial cable from end E1 interface with described.
Preferably, described main side main control module adopts STC89C516 chip.
Preferably, described main side E1 control module adopts 74HCT244 chip and 74HCT00 chip.
Preferably, described main side E1 communication module adopts DS2154 chip.
Preferably, described main side E1 interface adopts PT22-1011G network transformer.
A kind of digital SPC exchange E1 group network system that the utility model provides, comprise the main side digital SPC exchange being connected with external telephone wire and be connected with described main side digital SPC exchange from end digital SPC exchange, wherein, described main side digital SPC exchange comprises E1 plate more than two, described E1 plate comprises main side E1 main control module, main side E1 control module, main side E1 communication module and main side E1 interface, the described E1 plate from end digital SPC exchange and main side digital SPC exchange connects one to one, comprise the main control module from end E1, from end E1 control module, from end E1 communication module with from end E1 interface, described from holding E1 interface to be connected by coaxial cable with described main side E1 interface, the utility model signal content takes Common Channel Signaling to transmit, many digital SPC exchanges are merged, under the prerequisite of the equipment investment before not wasting, expanded the capacity of switch, realize multiple spot no-charge call.
Achieved beneficial effect is:
One, by expansion interface, the convenient exchange capacity that increases;
Two, by E1 networking, safe and reliable;
Three,, by the networking of E1 circuit own,, by operator, call is completely not free;
Four, the agreement between equipment is privately owned, and nonstandard product is difficult for by counterfeit.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model digital SPC exchange E1 group network system one embodiment;
Fig. 2 is the structured flowchart of main side E1 main control module one embodiment in Fig. 1;
Fig. 3 is the structured flowchart of main side E1 control module one embodiment in Fig. 1;
Fig. 4 is the structured flowchart of main side E1 communication module one embodiment in Fig. 1;
Fig. 5 is the structured flowchart of main side E1 interface one embodiment in Fig. 1;
Fig. 6 is the circuit diagram of main side E1 main control module one embodiment in Fig. 1;
Fig. 7 is the circuit diagram of main side E1 control module one embodiment in Fig. 1;
Fig. 8 is the circuit diagram of main side E1 communication module and E1 interface one embodiment in Fig. 1.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of digital SPC exchange E1 group network system, with reference to Fig. 1, in one embodiment, this utility model comprise the main side digital SPC exchange being connected with external telephone wire and be connected with main side digital SPC exchange from end digital SPC exchange, wherein
Described main side digital SPC exchange comprises E1 plate more than two, and described E1 plate comprises main side main control module 100, main side E1 control module 200, main side E1 communication module 300 and main side E1 interface 400,
Described main side E1 main control module 100, for to processing from the call information of end digital SPC exchange extension set, also for to sending calling from end digital SPC exchange extension set;
Described main side E1 control module 200, be connected with described main side E1 communication module 300 with described main side E1 main control module 100, for receiving the call information that main side E1 main control module 100 sends, and call information is changed to the described main side of rear control E1 communication module 300 and carry out E1 communication; The call information from end extension set also receiving for receiving described main side E1 communication module 300, feeds back to described main side E1 main control module 100 and processes;
Described main side E1 communication module 300, is connected with described main side E1 control module 400, sets up link connection while communicating by letter for E1; Also for E1 signal is carried out to no-load speed transmission;
Described main side E1 interface 400, mates for the E1 signal to sending and receiving;
The described E1 plate from end digital SPC exchange and described main side digital SPC exchange connects one to one, comprises from end E1 main control module 500, from end E1 control module 600, from end E1 communication module 700 with from end E1 interface 800,
Described from end E1 main control module 500, for the call information of main side digital SPC exchange extension set is processed, also for sending call information to main side digital SPC exchange extension set;
Described from end E1 control module 600, from end E1 main control module 500, from end E1 communication module, be connected 700 with described with described, for receiving the described call information from end E1 main control module 600; Also, for receiving the described outside line receiving from end E1 communication module 700 or the call information of main side extension set, feed back to described from holding E1 main control module 500 to process;
Described from end E1 communication module 700, be connected from end E1 control module with described, for E1 signal is carried out to no-load speed transmission;
Describedly from end E1 interface 800, be connected with described main side E1 interface 400, while communicating by letter for E1, set up link connection; Also for the E1 signal to sending and receiving, mate.
A kind of digital SPC exchange E1 group network system that the present embodiment provides, comprise the main side digital SPC exchange being connected with external telephone wire and be connected with main side digital SPC exchange from end digital SPC exchange, wherein, described main side digital SPC exchange comprises E1 plate more than two, described E1 plate comprises main side E1 main control module 100, main side E1 control module 200, main side E1 communication module 300 and main side E1 interface 400, the described E1 plate from end digital SPC exchange and main side digital SPC exchange connects one to one, comprise from end E1 main control module 500, from end E1 control module 600, from end E1 communication module 700 with from end E1 interface 800, described from holding E1 interface 800 to be connected by coaxial cable with described main side E1 interface 400, the present embodiment signal content takes Common Channel Signaling to transmit, many digital SPC exchanges are merged, under the prerequisite of the equipment investment before not wasting, expanded the capacity of switch, realize multiple spot no-charge call.
Achieved beneficial effect is:
One, by expansion interface, the convenient exchange capacity that increases;
Two, by E1 networking, safe and reliable;
Three,, by the networking of E1 circuit own,, by operator, call is completely not free;
Four, the agreement between equipment is privately owned, and nonstandard product is difficult for by counterfeit.
As shown in Figure 2 and Figure 6, described main side E1 main control module 100 comprises:
Master cpu 101, for the treatment of the call information from end digital SPC exchange extension set; Also for controlling and detect the Content of Communication of described main side E1 communication module 300.
Memory cell 102, is connected with master cpu 101, for the data of master cpu are carried out to exterior storage;
Extended addressing unit 103, is connected with master cpu 101, for expanding the address signal of master cpu;
Monitoring unit 104, is connected with supervisory control comuter with master cpu 101, for monitoring main side stored-program control exchange operating state.
Wherein, master cpu 101 adopts STC89C516 chips, and the single-chip microcomputer that STC89C516 chip is STC has that volume is little, cost is low, a feature of easy care, stable performance, for ensureing communications and the telephone calling content of interface.Memory cell 102 adopts 62256 chips, forms the static data memory of 64K.Extended addressing unit 103 adopts 74HC373 chip, for single-chip microcomputer STC89C516 chip interface is carried out to extended addressing.Described monitoring unit 104 comprises MAX232 chip, is connected, for monitoring main side E1 state with supervisory control comuter by RS232 interface.
As shown in Figure 3 and Figure 7, described main side E1 control module 200 comprises:
Buffer cell 201, is connected with main side E1 communication module 300, for E1 signal is cushioned;
Logic conversion unit 202, is connected with main side E1 communication module 300, for E1 signal is carried out to logical transition;
Indicating member 203, is connected with main side E1 communication module 300, for E1 loss of carrier, E1 synchronization loss and E1 Link State are carried out to alarm indication.
Wherein, buffer cell 201 adopts 74,HCT,244 eight buffer chips, for E1 signal is cushioned.Logic conversion unit 202 adopts 74HC00 chip, and 74HC00 is TTL(transistor-transistor logic level) input four NAND gate, 4 volts of high level, 1 volt of low level, NAND gate circuit is used for realizing the computing of combinational logic.203 pairs of E1 loss of carrier of indicating member, E1 synchronization loss and three kinds of modes of E1 Link State are carried out alarm indication, and the behaviour in service of stored-program control exchange is made to real-time reminding.
As shown in Figure 4 and Figure 8, described main side E1 communication module 300 comprises:
Communication unit 301, is connected with E1 control module 200, for the signaling call information of sending and receiving communication; Also for distributing the passage of voice call.
Wherein, communication unit 301 adopts DS2154 chip, takes Common Channel Signaling to transmit, and for the signaling call information of sending and receiving communication, also for distributing the passage of voice call, thereby guarantee interface communication is synchronous and link connection.
As shown in Figure 5 and Figure 8, described main side E1 interface 400 comprises:
Interface socket 401, and is connected from end E1 interface 800, for main side digital SPC exchange with from holding digital SPC exchange to set up E1 signal, be connected;
Matching unit 402, is connected with interface socket 401, the E1 signal receiving for docking port socket 401 carry out rate-matched;
Overvoltage protecting unit 403, is connected with matching unit 402, for the E1 signal that matching unit 402 is transmitted, carries out overvoltage protection.
Wherein, interface socket 401 adopts BNC(Bayonet Nut Connector, bayonet nut connector) joint is a kind of connector for coaxial cable.Matching unit 402 adopts PT22-1011G isolating transformer, for the transmission rate of E1 signal is mated, thus the rate stabilization of guarantee interface communication.Overvoltage protecting unit 403, for carrying out overvoltage protection to main side digital SPC exchange with from the E1 signal of the transmission of end digital SPC exchange or reception.
Particularly, described main side E1 interface 400 is connected by coaxial cable from end E1 interface 800 with described.
Coaxial cable is a kind of shielded type cable, and the E1 interface between the stored-program control exchange of the present embodiment digital SPC exchange E1 group network system adopts the coaxial cable of two BNC connectors to connect, and has the advantage of transmitting range length, signal stabilization.
With further reference to Fig. 1, the operation principle of the present embodiment digital SPC exchange E1 group network system is:
One, when digital SPC exchange works alone:
Main side digital SPC exchange with from end digital SPC exchange can use separately, directly control self inside connections and External Call; Now, main side stored-program control exchange is with identical from the working method of end stored-program control exchange modules.
Two, networking connects (comprising that physical layer connects and link connection)
1), physical layer connects:
From end digital SPC exchange, by coaxial cable, carry out two-way connection with main side digital SPC exchange.
By the main side E1 communication module 300 of main side digital SPC exchange, exported the digital signal of 2.048 MBPSs, by main side E1 interface 400, export, by coaxial cable, be connected to from end digital SPC exchange; From end E1 interface 800, receive the digital signal of 2.048 MBPSs, arrive from end E1 communication module 700;
Simultaneously from end digital SPC exchange from end E1 communication module 700, export the digital signal of 2.048 MBPSs, by exporting from end E1 interface 800, and be connected to main side digital SPC exchange by coaxial cable; Main side E1 interface 400 receives after the digital signal of 2.048 MBPSs, arrives main side E1 communication module 300;
2), link connection:
Main side digital SPC exchange with from end, by coaxial cable, be connected between digital SPC exchange, ensure the digital signal stable transfer of 2.048 MBPSs on both sides.
2.048 MBPS digital signals of output are by 32 passages, each passage 8000 frame, and each passage of every frame consists of 8 Bit datas, so the data signal rate of transmission is 8*8000*32=2.048 MBPS;
By main side E1 communication module 300, define transmission, 32 passages, wherein the 1st passage (TS0) is synchronizing channel; The 2nd to 16(TS1～15) be voice channel B, the 17th passage (TS16) is call information passage D, the 18th to 32(TS17～31) have 30 voice channels for voice channel B(); The signal of transmission is called 30B+D signal;
The main side E1 communication module 300 Adoption Network end patterns of main side digital SPC exchange wherein, make data synchronously the carrying out by main side of complete machine; And adopt user side pattern from end digital SPC exchange, with being synchronously as the criterion of main side; From the synchronous specifically defined bit of the 1st passage that adopts of end digital SPC exchange, realize synchronous location;
Main side E1 communication module 300 communicates the transmission of content after confirming that TS16 is call information passage.
Wherein, the transmitting procedure of Content of Communication is as follows:
A, main side digital SPC exchange call extension are from holding digital SPC exchange extension set:
When main side digital SPC exchange extension set need to be called out from end digital SPC exchange extension set, first the main side E1 main control module 100 by main side digital SPC exchange sends call request;
Call information will be sent to main side E1 control module 200;
After main side E1 control module 200 receives call information and call information is changed, the signal of controlling 300 outputs (TS16 passage contains call information) of main side E1 communication module by main side E1 interface 400 and coaxial cable be transferred to from end digital SPC exchange from end E1 interface 800;
From end digital SPC exchange receipt of call information, first by reading call information content from end E1 communication module 700, feed back to from end E1 control module 600, from end E1 control module 600, again call information is respond to from end E1 main control module 500; By carrying out the calling of corresponding extension set by call contents from end E1 main control module 500.
B, from end digital SPC exchange call extension main side digital SPC exchange extension set:
In the time need to calling out main side digital SPC exchange extension set from end digital SPC exchange extension set, first by sending call requests from end digital SPC exchange from end E1 main control module 500;
Call information is sent to from end E1 control module 600;
E1 control module receipt of call information is also entered call information after conversion, controls from the signal of end E1 communication module 700 outputs (TS16 passage contains call information) by be transferred to the main side E1 interface 400 of main side from end E1 interface 800 and coaxial cable;
Main side digital SPC exchange receives after call information, first by main side E1 communication module 300, reads call information content, feeds back to main side E1 control module 200, and main side E1 control module 200 respond to main side E1 main control module 100 call information again; Main side E1 main control module 100 by main side digital SPC exchange judges that called extension set, in main side, will carry out the calling of corresponding extension set by call contents.
C, from the outside line of end digital SPC exchange call extension:
In the time need to calling out outside line from end digital SPC exchange extension set, first by sending call request from end E1 main control module 500; First from end E1 main control module 500, call information is sent to from end E1 control module 600; From end E1 control module 600 receipt of call information and call information conversion, control from end E1 communication module 700 and call information (call information that TS16 passage contains) is transferred to the main side E1 interface 400 of main side digital SPC exchange by E1 interface and coaxial cable;
After the digital SPC exchange receipt of call information of main side, first by main side E1 communication module 300, read call information content, feed back to main side E1 control module 200, main side E1 control module 200 respond to call information the main side E1 main control module 100 of main side again; By main side E1 main control module 100, determine called outside line after the digital SPC exchange of main side, by call contents, carry out the calling of corresponding extension set.
D, first is from end digital SPC exchange call extension second from end digital SPC exchange extension set:
When first, from end digital SPC exchange extension set, need to call out second during from end digital SPC exchange extension set, first by first, from end digital SPC exchange extension set, from end E1 main control module 500, send call requests;
First from end digital SPC exchange from end E1 main control module 500 by call information send to first from end digital SPC exchange from end E1 control module 600;
First from the changing call information of end digital SPC exchange from end E1 control module 600 receipt of call information, controls from the signal of end E1 communication module 700 outputs (TS16 passage contains call information) by be transferred to the main side E1 interface 400 of the corresponding first group of E1 plate in main side from end E1 interface 800 and coaxial cable;
After the main side E1 interface 400 receipt of call information of first group of E1 plate of main side digital SPC exchange, first by the E1 communication module 300 of the first group of E1 plate in main side, read call information content, the main side E1 control module 200 that feeds back to 200, the first groups of E1 plates of main side E1 control module of first group of E1 plate respond to call information the main side E1 main control module 100 of first group of E1 plate again; Main side E1 main control module 100 by first group of E1 plate sends to call information the main side E1 control module 200 of second group of E1 plate;
After the main side E1 control module 200 of second group of E1 plate receives call information and call information is changed, control second group of E1 plate 300 outputs (TS16 passage contains call information) of main side E1 communication module signal by main side E1 interface 400 and coaxial cable be transferred to second from end digital SPC exchange from end E1 interface 800;
Second from end digital SPC exchange receipt of call information, first by reading call information content from end E1 communication module 700, feed back to from end E1 control module 600, from end E1 control module 600 again call information respond to second from end digital SPC exchange from end E1 main control module 500; By second, from end digital SPC exchange, from end E1 main control module 500, according to the content of calling out, carry out the calling of corresponding extension set.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a digital SPC exchange E1 group network system, is characterized in that, comprise the main side digital SPC exchange being connected with external telephone wire and be connected with described main side digital SPC exchange from end digital SPC exchange, wherein,
Described main side digital SPC exchange comprises E1 plate more than two, and described E1 plate comprises main side E1 main control module, main side E1 control module, main side E1 communication module and main side E1 interface,
Described main side E1 main control module, for to processing from the call information of end digital SPC exchange extension set, also for to sending calling from end digital SPC exchange extension set;
Described main side E1 control module, is connected with described main side E1 communication module with described main side main control module, the call information sending for receiving main side main control module, and call information is changed to the described main side of rear control E1 communication module and carry out E1 communication; The call information from end extension set also receiving for receiving described main side E1 communication module, feeds back to described main side main control module and processes;
Described main side E1 communication module, is connected with described main side E1 control module, sets up link connection while communicating by letter for E1; Also for E1 signal is carried out to no-load speed transmission;
Described main side E1 interface, mates for the E1 signal to sending and receiving;
The described E1 plate from end digital SPC exchange and described main side digital SPC exchange connects one to one, comprises from end E1 main control module, from end E1 control module, from end E1 communication module with from end E1 interface,
Described from end E1 main control module, for the call information of main side digital SPC exchange extension set is processed, also for sending call information to main side digital SPC exchange extension set;
Described from end E1 control module, be connected from end E1 communication module with described from end main control module with described, for receiving the described call information from end main control module; Also, for receiving the described outside line receiving from end E1 communication module or the call information of main side extension set, feed back to described from holding main control module to process;
Described from end E1 communication module, be connected from end E1 control module with described, for E1 signal is carried out to no-load speed transmission;
Describedly from end E1 interface, be connected with described main side E1 interface, while communicating by letter for E1, set up link connection; Also for the E1 signal to sending and receiving, mate.
2. digital SPC exchange E1 group network system as claimed in claim 1, is characterized in that, described main side E1 main control module comprises:
Master cpu, for the treatment of the call information from end digital SPC exchange extension set; Also for controlling and detect the Content of Communication of described main side E1 communication module;
Memory cell, is connected with described master cpu, for the data of master cpu are carried out to exterior storage;
Extended addressing unit, is connected with described master cpu, for expanding the address signal of master cpu;
Monitoring unit, is connected with supervisory control comuter with described master cpu, for monitoring main side stored-program control exchange operating state.
3. digital SPC exchange E1 group network system as claimed in claim 1, is characterized in that, described main side E1 control module comprises:
Buffer cell, is connected with described main side E1 communication module, for E1 signal is cushioned;
Logic conversion unit, is connected with described main side E1 communication module, for E1 signal is carried out to logical transition;
Indicating member, is connected with described main side E1 communication module, for E1 loss of carrier, E1 synchronization loss and E1 Link State are carried out to alarm indication.
4. digital SPC exchange E1 group network system as claimed in claim 1, is characterized in that, described main side E1 communication module comprises:
Communication unit, is connected with described E1 control module, for the signaling call information of sending and receiving communication; Also for distributing the passage of voice call.
5. digital SPC exchange E1 group network system as claimed in claim 1, is characterized in that, described main side E1 interface comprises:
Interface socket, is connected from end E1 interface with described, for main side digital SPC exchange with from holding digital SPC exchange to set up E1 signal, be connected;
Matching unit, is connected with described interface socket, the E1 signal receiving for docking port socket carry out rate-matched;
Overvoltage protecting unit, is connected with described matching unit, for the E1 signal that matching unit is transmitted, carries out overvoltage protection.
6. the digital SPC exchange E1 group network system as described in claim 1 to 5 any one, is characterized in that, described main side E1 interface is connected by coaxial cable from end E1 interface with described.
7. digital SPC exchange E1 group network system as claimed in claim 6, is characterized in that, described main side main control module adopts STC89C516 chip.
8. digital SPC exchange E1 group network system as claimed in claim 6, is characterized in that, described main side E1 control module adopts 74HCT244 chip and 74HCT00 chip.
9. digital SPC exchange E1 group network system as claimed in claim 6, is characterized in that, described main side E1 communication module adopts DS2154 chip.
10. digital SPC exchange E1 group network system as claimed in claim 6, is characterized in that, described main side E1 interface adopts PT22-1011G network transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149187.7U CN203788420U (en) | 2014-03-28 | 2014-03-28 | Digital stored program control exchange E1 networking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149187.7U CN203788420U (en) | 2014-03-28 | 2014-03-28 | Digital stored program control exchange E1 networking system |
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| CN203788420U true CN203788420U (en) | 2014-08-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108600565A (en) * | 2018-04-24 | 2018-09-28 | 深圳震有科技股份有限公司 | More PBX share network system, method and the interchanger of SS7 signalling points |
| CN108924373A (en) * | 2018-07-13 | 2018-11-30 | 京东方科技集团股份有限公司 | Communication system, construction method and the communication means of fixed line based on transfer server |
-
2014
- 2014-03-28 CN CN201420149187.7U patent/CN203788420U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108600565A (en) * | 2018-04-24 | 2018-09-28 | 深圳震有科技股份有限公司 | More PBX share network system, method and the interchanger of SS7 signalling points |
| CN108924373A (en) * | 2018-07-13 | 2018-11-30 | 京东方科技集团股份有限公司 | Communication system, construction method and the communication means of fixed line based on transfer server |
| CN108924373B (en) * | 2018-07-13 | 2021-02-12 | 京东方科技集团股份有限公司 | Fixed telephone communication system, construction method and communication method based on transfer server |
| US10999336B2 (en) | 2018-07-13 | 2021-05-04 | Boe Technology Group Co., Ltd. | Communication system and construction method and communication method thereof |
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