CN207251749U - A kind of special telephone line device for intelligently switching - Google Patents
A kind of special telephone line device for intelligently switching Download PDFInfo
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- CN207251749U CN207251749U CN201721254502.2U CN201721254502U CN207251749U CN 207251749 U CN207251749 U CN 207251749U CN 201721254502 U CN201721254502 U CN 201721254502U CN 207251749 U CN207251749 U CN 207251749U
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Abstract
The utility model discloses a kind of special telephone line device for intelligently switching, for switching the connection between substation and primary circuit and extension wire, including the first telephone relay interface unit, second telephone relay interface unit, switching treatmenting unit and telephone user interface unit, first telephone relay interface unit and primary connection, the second telephone relay interface unit is connected with extension wire, telephone user interface unit is connected with substation, switching treatmenting unit respectively with the first telephone relay interface unit, second telephone relay interface unit is connected with telephone user interface unit.The connection that the utility model can automatically switch between substation and primary circuit/extension wire, the convenient situation according to circuit speech quality, automatically switched between primary circuit and extension wire, it is accurate convenient, ensure that special telephone line is unimpeded at any time, the safety and reliability of special telephone line is improved, can be widely applied to responsible consumer communication support field.
Description
Technical field
Field of communication technology is the utility model is related to, more particularly to a kind of special telephone line device for intelligently switching.
Background technology
Explanation of nouns：
DSP：Digital signal process, Digital Signal Processing；
PCM：Pulse Code Modulation, pulse code modulation scheme；
MDC：Multipledescription coding, Multiple Description Coding；
MCBSP：Multichannel Buffered Serial Port, multi-channel synchronous buffered serial port, is TI companies
The common peripheral hardware of dsp chip；
EDMA：Enhanced Direct Memory Access, refer to external equipment not by CPU and directly with system
Deposit the interfacing for exchanging data；
E1：Field of telecommunications, China use 30 tunnel pulse-code modulation PCM abbreviation E1 of European standard, and speed is 2.048Mbit/
s；
T1：24 tunnel pulse-code modulation PCM of U.S.'s standard, abbreviation T1, speed is 1.548Mbit/s.
The telephone line of responsible consumer is generally all made of the active and standby two lines road mutually backed up, when a wherein circuit
During failure, an other circuit can be enabled at once, to ensure that responsible consumer at any time can be with normal talking.In practical application
In, generally active and standby circuit is verified in a manner of artificial audition before the call, and primary line is determined according to subjective judgement
Behind road and extension wire, the switching of primary circuit and extension wire is manually carried out.This manual type needs to pass through
Switch active and standby circuit manually, technological means falls behind, it is impossible to meet that the high quality of special telephone line user's communication, high reliability will
Ask.
Utility model content
In order to solve above-mentioned technical problem, the purpose of this utility model is to provide a kind of special telephone line intelligently switching dress
Put.
Technical solution is used by the utility model solves its technical problem：
A kind of special telephone line device for intelligently switching, for switching the company between substation and primary circuit and extension wire
Connect, including the first telephone relay interface unit, the second telephone relay interface unit, switching treatmenting unit and telephone user interface list
Member, the first telephone relay interface unit and primary connection, the second telephone relay interface unit and extension wire
Connection, the telephone user interface unit are connected with substation, and the switching treatmenting unit connects with the first telephone relay respectively
Mouth unit, the second telephone relay interface unit are connected with telephone user interface unit.
Further, the switching treatmenting unit include the first MCBSP interfaces, the 2nd MCBSP interfaces, the 3rd MCBSP interfaces,
First trunk interface scanner uni control module, the second trunk interface scanner uni control module, user interface scanner uni control module,
3rd SPI interface, the 4th SPI interface, the 5th SPI interface and data cache module, the first trunk interface scanner uni control
Module is connected with the 3rd SPI interface, and the second trunk interface scanner uni control module is connected with the 4th SPI interface, the use
Family interface scans and control module are connected with the 5th SPI interface, and the first MCBSP interfaces and the 3rd SPI interface are respectively with
One telephone relay interface unit connect, the 2nd MCBSP interfaces and the 4th SPI interface respectively with the second telephone relay interface list
Member connection, the 5th SPI interface and the 3rd MCBSP interfaces are connected with telephone user interface unit respectively, the data buffer storage
Module is connected with the first MCBSP interfaces, the 2nd MCBSP interfaces and the 3rd MCBSP interfaces respectively.
Further, the first telephone relay interface unit includes the one two four line translation interface, the first A/D conversion electricity
Road, the first coding circuit, the first decoded back circuit, the first D/A conversion circuits, the first pcm interface, the first SPI interface and
One status scan and Logic control module, the first A/D conversion circuits, the first D/A conversion circuits pass through the one two four line
Translation interface and primary connection, the first state scanner uni Logic control module and primary connection, described first
A/D conversion circuits are connected by the first coding circuit with the first pcm interface, and first pcm interface passes through the first decoded back
Circuit is connected with the first D/A conversion circuits, and the first state scanner uni Logic control module passes through the first SPI interface and the 3rd
SPI interface connects, and first pcm interface is connected with the first MCBSP interfaces.
Further, the second telephone relay interface unit includes the 2nd 24 line translation interface, the 2nd A/D conversion electricity
Road, the second coding circuit, the second decoded back circuit, the 2nd D/A conversion circuits, the second pcm interface, the second SPI interface and
Two-state scanner uni Logic control module, the 2nd A/D conversion circuits and the 2nd D/A conversion circuits pass through the 2nd 24 line
Translation interface is connected with extension wire, and second status scan and Logic control module are connected with extension wire, and described second
A/D conversion circuits are connected by the second coding circuit with the second pcm interface, and second pcm interface passes through the second decoded back
Circuit is connected with the 2nd D/A conversion circuits, and second status scan and Logic control module pass through the second SPI interface and the 4th
SPI interface connects, and second pcm interface is connected with the 2nd MCBSP interfaces.
Further, the telephone user interface unit includes the 3rd 24 line translation interface, the 3rd A/D conversion circuits, the
Three coding circuits, the 3rd decoded back circuit, the 3rd D/A conversion circuits, the 3rd pcm interface, the 6th SPI interface and the third state
Scanner uni Logic control module, the 3rd A/D conversion circuits and the 3rd D/A conversion circuits are connect by the conversion of the 3rd 24 line
Mouth is connected with substation, and the third state scanner uni Logic control module is connected with substation, the 3rd A/D conversions
Circuit is connected by the 3rd coding circuit with the 3rd pcm interface, and the 3rd pcm interface passes through the 3rd decoded back circuit and
Three D/A conversion circuits connect, and the third state scanner uni Logic control module passes through the 6th SPI interface and the 5th SPI interface
Connection, the 3rd pcm interface are connected with the 3rd MCBSP interfaces.
Further, the switching treatmenting unit further includes multiple description coded processing module and MDC data buffering modules, described
Data cache module pass sequentially through after multiple description coded processing module, MDC data bufferings module and the 3rd MCBSP interfaces with phone
The 3rd pcm interface connection of user interface section.
Further, the switching treatmenting unit further includes speech channel analysis and processing module and signal generator module, the words
Road analysis and processing module and signal generator module are connected with data cache module.
Further, the first MCBSP interfaces, the 2nd MCBSP interfaces and the 3rd MCBSP interfaces and data cache module it
Between data interaction carried out by EDMA modes.
The beneficial effects of the utility model are：This special telephone line device for intelligently switching is by setting the first telephone relay interface
Unit, the second telephone relay interface unit, switching treatmenting unit and telephone user interface unit, can automatically switch substation
With the connection between primary circuit/extension wire, the convenient situation according to circuit speech quality, automatically in primary circuit and standby
Switched over between circuit, it is accurate convenient, ensure that special telephone line is unimpeded at any time, improve the security of special telephone line and reliable
Property.
Brief description of the drawings
Fig. 1 is the electronic block diagrams of the special telephone line device for intelligently switching of the utility model；
Fig. 2 is the electronic block diagrams of the specific embodiment of the special telephone line device for intelligently switching of the utility model.
Embodiment
With reference to Fig. 1, the utility model provides a kind of special telephone line device for intelligently switching, for switching substation and master
With the connection between circuit and extension wire, including the first telephone relay interface unit, the second telephone relay interface unit, switching
Processing unit and telephone user interface unit, the first telephone relay interface unit and primary connection, second electricity
Words relay interface unit is connected with extension wire, and the telephone user interface unit is connected with substation, the hand-off process
Unit is connected with the first telephone relay interface unit, the second telephone relay interface unit and telephone user interface unit respectively.This
Utility model by setting the first telephone relay interface unit, second telephone relay interface unit the two relay interface units,
By relay function, connection seals in primary circuit and extension wire from PCM terminals or interchanger, realize to primary circuit and
The switching of extension wire, so as to fulfill the connection of different circuits and substation.
It is further used as preferred embodiment, with reference to Fig. 2, the switching treatmenting unit includes the first MCBSP interfaces, the
Two MCBSP interfaces, the 3rd MCBSP interfaces, the first trunk interface scanner uni control module, the second trunk interface scanner uni control mould
Block, user interface scanner uni control module, the 3rd SPI interface, the 4th SPI interface, the 5th SPI interface and data cache module,
The first trunk interface scanner uni control module is connected with the 3rd SPI interface, and the second trunk interface scanner uni controls mould
Block is connected with the 4th SPI interface, and the user interface scanner uni control module is connected with the 5th SPI interface, the first MCBSP
Interface and the 3rd SPI interface are connected with the first telephone relay interface unit respectively, and the 2nd MCBSP interfaces and the 4th SPI connect
Mouthful be connected respectively with the second telephone relay interface unit, the 5th SPI interface and the 3rd MCBSP interfaces respectively with telephone subscriber
Interface unit connect, the data cache module respectively with the first MCBSP interfaces, the 2nd MCBSP interfaces and the 3rd MCBSP interfaces
Connection.
Preferred embodiment is further used as, the first telephone relay interface unit includes the conversion of the one two four line and connects
Mouth, the first A/D conversion circuits, the first coding circuit, the first decoded back circuit, the first D/A conversion circuits, the first pcm interface,
First SPI interface and first state scanner uni Logic control module, the first A/D conversion circuits, the first D/A conversion circuits are equal
By the one two four line translation interface and primary connection, the first state scanner uni Logic control module and primary circuit
Connection, the first A/D conversion circuits are connected by the first coding circuit with the first pcm interface, and first pcm interface passes through
First decoded back circuit is connected with the first D/A conversion circuits, and the first state scanner uni Logic control module passes through first
SPI interface is connected with the 3rd SPI interface, and first pcm interface is connected with the first MCBSP interfaces.
Preferred embodiment is further used as, the second telephone relay interface unit includes the conversion of the 2nd 24 line and connects
Mouth, the 2nd A/D conversion circuits, the second coding circuit, the second decoded back circuit, the 2nd D/A conversion circuits, the second pcm interface,
Second SPI interface and the second status scan and Logic control module, the 2nd A/D conversion circuits and the 2nd D/A conversion circuits
It is connected by the 2nd 24 line translation interface with extension wire, second status scan and Logic control module and siding
Road connects, and the 2nd A/D conversion circuits are connected by the second coding circuit with the second pcm interface, and second pcm interface leads to
Cross the second decoded back circuit to be connected with the 2nd D/A conversion circuits, second status scan and Logic control module pass through
Two SPI interfaces are connected with the 4th SPI interface, and second pcm interface is connected with the 2nd MCBSP interfaces.
Be further used as preferred embodiment, the telephone user interface unit include the 3rd 24 line translation interface,
3rd A/D conversion circuits, the 3rd coding circuit, the 3rd decoded back circuit, the 3rd D/A conversion circuits, the 3rd pcm interface,
Six SPI interfaces and third state scanner uni Logic control module, the 3rd A/D conversion circuits and the 3rd D/A conversion circuits are equal
It is connected by the 3rd 24 line translation interface with substation, the third state scanner uni Logic control module and substation
Connection, the 3rd A/D conversion circuits are connected by the 3rd coding circuit with the 3rd pcm interface, and the 3rd pcm interface passes through
3rd decoded back circuit is connected with the 3rd D/A conversion circuits, and the third state scanner uni Logic control module passes through the 6th
SPI interface is connected with the 5th SPI interface, and the 3rd pcm interface is connected with the 3rd MCBSP interfaces.
Be further used as preferred embodiment, the switching treatmenting unit further include multiple description coded processing module and
MDC data buffering modules, the data cache module pass sequentially through multiple description coded processing module, MDC data bufferings module and
It is connected after 3rd MCBSP interfaces with the 3rd pcm interface of telephone user interface unit.
Preferred embodiment is further used as, the switching treatmenting unit further includes speech channel analysis and processing module and signal
Generator module, the speech channel analysis and processing module and signal generator module are connected with data cache module.Speech channel is analyzed
Processing module is used for the speech quality for detecting circuit, and signal generator module is used to produce test signal.The utility model can be with
Automatic test call quality, without manually carrying out speech quality test.
Preferred embodiment is further used as, the first MCBSP interfaces, the 2nd MCBSP interfaces and the 3rd MCBSP connect
Data interaction is carried out by EDMA modes between mouth and data cache module.
The operation principle of the special telephone line device for intelligently switching of the present embodiment is as follows：
Primary circuit and extension wire are connected respectively in the first telephone relay interface unit and the second phone of the present apparatus
After interface unit, the first trunk interface scanner uni control module of two telephone relay interface units and the scanning of the second trunk interface
And control module monitors the variable condition of master spare circuit in real time, and state change is passed through the first SPI interface and the second SPI interface
It is sent to switching treatmenting unit, the first trunk interface scanner uni control module of switching treatmenting unit and the scanning of the second trunk interface
And control module branch obtains line status by the 3rd SPI interface and the 4th SPI interface and changes in real time, and various states are carried out
Response, and the first trunk interface scanner uni control module of two telephone relay interface units of order and the scanning of the second trunk interface
And control module produces various operations, so as to complete the required various Signalling exchanges of telephone connection such as Boll traits, off-hook, extension
Machine etc. acts.Meanwhile each telephone relay interface unit the voice signal from primary circuit/extension wire through respective A/
The digital code stream of E1/T1 frame formats is combined into after D conversion circuits, quantization encoding, through respective pcm interface, is sent at switching
The corresponding MCBSP interfaces of reason unit are received.Opposite direction, the data code flow in switching treatmenting unit, send through MCBSP interfaces
To the corresponding pcm interface of telephone relay interface unit, then it is decoded go back primary circuit, D/A conversion circuits after, revert to simulation language
Sound signal, correspondence are sent in primary circuit/extension wire.Between the MCBSP interfaces and data cache module of switching treatmenting unit
With the operating mode transceiving data of EDMA, CPU overhead is not take up, therefore the transmitting-receiving of multichannel data can be carried out at the same time, realizes master
With circuit/extension wire two-way telephone signal after analog-to-digital conversion automatically into switching treatmenting unit, switching treatmenting unit
The data of data cache module then give the pcm interface of two telephone relay interface units through two MCBSP interfaces automatically, respectively
Decoded back, digital-to-analogue conversion be analog signal after, be sent into primary circuit/extension wire.Thereby realize primary circuit/standby
With exchanging automatically between circuit two-way telephone signal and switching treatmenting unit.It is temporarily stored into the data buffer storage mould of switching treatmenting unit
The two-way digital telephone signal of block, can directly be connected with the 3rd pcm interface of telephone user interface unit, can also be by right
Two paths of signals carries out multiple description coded processing, and two paths of signals is closed by multiple description coded processing module, MDC data buffering modules
After signal all the way, then it is output to by the 3rd MCBSP interfaces the 3rd pcm interface of telephone user interface unit.Phone
User interface section reverts to analog voice signal after the 3rd decoded back circuit, the 3rd D/A conversions, is sent to substation
On, the automatic selectivity for thereby realizing active/standby two-way telephone signal receives.The transmission signal of substation, is used in phone
In the interface unit of family, after the 3rd A/D conversion circuits, the 3rd coding circuit, the digital code stream of T1/E1 forms is converted to, is passed through
3rd pcm interface, is sent to the 3rd MCBSP interfaces of switching treatmenting unit, through the 3rd MCBSP interfaces in a manner of EDMA automatically into
Enter the MDC data buffering modules of switching treatmenting unit.These digital sending signals from the user, the mode that can be led directly to, warp
The MCBSP interfaces being connected with telephone relay interface unit send any road of active/standby circuit to.Can also be to number signal
Multiple description coded processing is carried out, corresponding multi-description coding-decoding processing module and MDC data buffering modules are set, then sent at the same time
To active/standby circuit, thereby realize transmission or selectivity while user sends signal to active/standby circuit and send, so that real
The automatic switching function of existing active/standby two-way phone.In addition, the third state scanner uni control logic mould of telephone user interface unit
Block, for the state of real time scan substation, realizes that phone establishes the work(such as the feed that speech channel continues, ring, dislodging machine testing
Can, the user interface scanner uni control module inside switching treatmenting unit, controls these functions by the 5th SPI interface
System.
The connection that this switching device can automatically switch between substation and primary circuit/extension wire, facilitates basis
The situation of circuit speech quality, automatically switches between primary circuit and extension wire, accurate convenient, ensures that phone is special
Line is unimpeded at any time, improves the safety and reliability of special telephone line, suitable for responsible consumer communication support field.
Above is the preferable of the utility model is implemented to be illustrated, but the invention is not limited to the reality
Example is applied, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to the utility model spirit
Or replace, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (8)
- A kind of 1. special telephone line device for intelligently switching, for switching the company between substation and primary circuit and extension wire Connect, it is characterised in that including the first telephone relay interface unit, the second telephone relay interface unit, switching treatmenting unit and electricity Talk about user interface section, the first telephone relay interface unit and primary connection, the second telephone relay interface list Member is connected with extension wire, and the telephone user interface unit is connected with substation, and the switching treatmenting unit is respectively with the One telephone relay interface unit, the second telephone relay interface unit are connected with telephone user interface unit.
- A kind of 2. special telephone line device for intelligently switching according to claim 1, it is characterised in that the switching treatmenting unit Including the first MCBSP interfaces, the 2nd MCBSP interfaces, the 3rd MCBSP interfaces, the first trunk interface scanner uni control module, second Trunk interface scanner uni control module, user interface scanner uni control module, the 3rd SPI interface, the 4th SPI interface, the 5th SPI Interface and data cache module, the first trunk interface scanner uni control module is connected with the 3rd SPI interface, in described second It is connected after interface scans and control module with the 4th SPI interface, the user interface scanner uni control module and the 5th SPI interface Connection, the first MCBSP interfaces and the 3rd SPI interface are connected with the first telephone relay interface unit respectively, and described second MCBSP interfaces and the 4th SPI interface are connected with the second telephone relay interface unit respectively, the 5th SPI interface and the 3rd MCBSP interfaces are connected with telephone user interface unit respectively, the data cache module respectively with the first MCBSP interfaces, second MCBSP interfaces and the connection of the 3rd MCBSP interfaces.
- A kind of 3. special telephone line device for intelligently switching according to claim 2, it is characterised in that first telephone relay Interface unit include the one two four line translation interface, the first A/D conversion circuits, the first coding circuit, the first decoded back circuit, First D/A conversion circuits, the first pcm interface, the first SPI interface and first state scanner uni Logic control module, described first A/D conversion circuits, the first D/A conversion circuits pass through the one two four line translation interface and primary connection, first shape State scanner uni Logic control module and primary connection, the first A/D conversion circuits pass through the first coding circuit and first Pcm interface connects, and first pcm interface is connected by the first decoded back circuit with the first D/A conversion circuits, and described first Status scan and Logic control module are connected by the first SPI interface with the 3rd SPI interface, first pcm interface and first MCBSP interfaces connect.
- A kind of 4. special telephone line device for intelligently switching according to claim 2, it is characterised in that second telephone relay Interface unit include the 2nd 24 line translation interface, the 2nd A/D conversion circuits, the second coding circuit, the second decoded back circuit, 2nd D/A conversion circuits, the second pcm interface, the second SPI interface and the second status scan and Logic control module, described second A/D conversion circuits and the 2nd D/A conversion circuits are connected by the 2nd 24 line translation interface with extension wire, second shape State scanner uni Logic control module is connected with extension wire, and the 2nd A/D conversion circuits pass through the second coding circuit and second Pcm interface connects, and second pcm interface is connected by the second decoded back circuit with the 2nd D/A conversion circuits, and described second Status scan and Logic control module are connected by the second SPI interface with the 4th SPI interface, second pcm interface and second MCBSP interfaces connect.
- A kind of 5. special telephone line device for intelligently switching according to claim 2, it is characterised in that the telephone user interface Unit includes the 3rd 24 line translation interface, the 3rd A/D conversion circuits, the 3rd coding circuit, the 3rd decoded back circuit, the 3rd D/A conversion circuits, the 3rd pcm interface, the 6th SPI interface and third state scanner uni Logic control module, the 3rd A/D turn Change circuit and the 3rd D/A conversion circuits are connected by the 3rd 24 line translation interface with substation, the third state is swept Retouch and Logic control module is connected with substation, the 3rd A/D conversion circuits are connect by the 3rd coding circuit with the 3rd PCM Mouth connection, the 3rd pcm interface are connected by the 3rd decoded back circuit with the 3rd D/A conversion circuits, the third state Scanner uni Logic control module is connected by the 6th SPI interface with the 5th SPI interface, the 3rd pcm interface and the 3rd MCBSP Interface connects.
- A kind of 6. special telephone line device for intelligently switching according to claim 2, it is characterised in that the switching treatmenting unit Multiple description coded processing module and MDC data buffering modules are further included, the data cache module passes sequentially through multiple description coded It is connected after processing module, MDC data bufferings module and the 3rd MCBSP interfaces with the 3rd pcm interface of telephone user interface unit.
- A kind of 7. special telephone line device for intelligently switching according to claim 2, it is characterised in that the switching treatmenting unit Speech channel analysis and processing module and signal generator module are further included, the speech channel analysis and processing module and signal generator module are equal It is connected with data cache module.
- 8. a kind of special telephone line device for intelligently switching according to claim 2, it is characterised in that the first MCBSP connects Data interaction is carried out by EDMA modes between mouth, the 2nd MCBSP interfaces and the 3rd MCBSP interfaces and data cache module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254502.2U CN207251749U (en) | 2017-09-26 | 2017-09-26 | A kind of special telephone line device for intelligently switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254502.2U CN207251749U (en) | 2017-09-26 | 2017-09-26 | A kind of special telephone line device for intelligently switching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207251749U true CN207251749U (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721254502.2U Active CN207251749U (en) | 2017-09-26 | 2017-09-26 | A kind of special telephone line device for intelligently switching |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798359A (en) * | 2019-11-06 | 2020-02-14 | 中国电子科技集团公司第三十研究所 | Automatic switching high-reliability user number allocation method |
-
2017
- 2017-09-26 CN CN201721254502.2U patent/CN207251749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110798359A (en) * | 2019-11-06 | 2020-02-14 | 中国电子科技集团公司第三十研究所 | Automatic switching high-reliability user number allocation method |
| CN110798359B (en) * | 2019-11-06 | 2022-02-25 | 中国电子科技集团公司第三十研究所 | Automatic switching high-reliability user number allocation method |
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