CN202340257U - Wire-based remote data-speech-transmission apparatus - Google Patents
Wire-based remote data-speech-transmission apparatus Download PDFInfo
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- CN202340257U CN202340257U CN2011204789066U CN201120478906U CN202340257U CN 202340257 U CN202340257 U CN 202340257U CN 2011204789066 U CN2011204789066 U CN 2011204789066U CN 201120478906 U CN201120478906 U CN 201120478906U CN 202340257 U CN202340257 U CN 202340257U
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Abstract
The utility model belongs to the field of the signal transmitting device and particularly relates to a wire-based remote data-speech-transmission apparatus applied to a small-scale special communication network, which is characterized by comprising a voice compression coding module, a multiplexing and modulation transmitting module, a system control processor, an interface module and a power module, wherein the interface module comprises a data interface, a transmission wire interface and a voice interface; the multiplexing and modulation transmitting module is connected with the system control processor, the voice compression coding module, the data interface and the transmission wire interface respectively; the voice compression coding module is connected with the voice interface; and the transmission wire interface and the voice interface are connected with the system control processor. The wire-based remote data-speech-transmission apparatus disclosed by the utility model has the advantages of simple networking, good data-speech-transmission real-time performance, long communication distance and convenience in technology upgradation.
Description
Technical field
The utility model belongs to the signal transmitting apparatus field, be specifically related to a kind of be applied to private wire network on a small scale based on wired remote simultaneous data and speech transmission equipment.
Background technology
Can not converse simultaneously during Common Facsimile Machine transmission data, data need be separated with speech and transmitted, and facsimile machine can only receive on the public telephone network (PSTN), and transmission medium is single;
IP phone is based on the TCP/IP procotol, and the real-time of conversation is poor, and under the communication conditions condition of poor, time-delay can appear in speech, will cause voice call to carry out when serious;
Uses DSVD MODEM to accomplish voice and be connected work, but the flexibility of design not very big like this, is fixed rate like voice rate that the transmission that this point will have influence on long distance realizes with data multiplexing demultiplexing and transmission.And because MODEM pays the utmost attention to the transmission of voice, the increase that might bring data transmission delay in this case.The DSVD Modem that is used for the PSTN net that can see in the market can only accomplish a little-connection, then also needs special multipoint control unit (MCU), general more complicated if realize the multiple spot linkage function.
The utility model content
The purpose of the utility model is to solve the defective that present small-scale private wire network does not have suitable simultaneous data and speech transmission equipment; Provide a kind of based on wired remote simultaneous data and speech transmission equipment; This equipment is realized the multiplexing packing and the demultiplexing of data, voice by CPU; MODEM is set to data pattern, finally realizes the extraordinary full-duplex data of real-time, speech simultaneous interpretation.
The utility model is realized through following technical scheme:
Be a kind of based on wired remote simultaneous data and speech transmission equipment; It is characterized in that comprising voice compression coding module, multiplexing and modulation transmissions module, system control processor, interface module and power module; Said interface module comprises data-interface, transmission line interface and speech interface; Said multiplexingly be connected with system control processor, voice compression coding module, data-interface, transmission line interface respectively with the modulation transmissions module; The voice compression coding module is connected with speech interface, and said transmission line interface is connected with system control processor with speech interface.
A preferred version as the utility model: said system control processor is the singlechip chip with built-in ROM and RAM.
A preferred version as the utility model: data-interface is the RS-232C interface.
A preferred version as the utility model: the transmission line interface is the insulate line interface.
A preferred version as the utility model: multiplexingly be connected with external memory with the modulation transmissions module, said external memory is a nonvolatile memory.
G.729A/B the described voice compression coding module of the utility model adopts has, and G.723/G.723.1 waits the speech coder CT8020 of multiple compression algorithm, can select the digital speech of different rates to transmit like this, to reach the purpose of long-distance transmissions.
The utility model described multiplexing and modulation transmissions module use CPU to accomplish the multiplex/demultiplex of voice and user data, and V.34 the composite data stream after multiplexing uses modem chip to accomplish it and send and reception.Because transmission range far away (＞10Km); And insulate line is poorer than the performance of regular phone line; In order to guarantee that equipment has reliable data transmission quality; Satisfying under the situation of customer requirements, the transmission rate of modulation is being carried out suitable restriction, and some significant bits is carried out error control coding.
The described external memory of the utility model is used to store working procedure, data and the configuration information of modulator-demodulator, preferentially selects for use but is not limited to nonvolatile memory (NVRAM).
The described system control processor of the utility model is used to control the operation of each module of whole system, and carries out signaling process, and this part is the nucleus module of the normal operation of entire equipment.For saving the space, accelerate the speed of service, adopt singlechip chip as processor controls here with sufficient built-in ROM and RAM.
The described data-interface of the utility model adopts RS-232C (V.24) interface, and (RXD, TXD GND) communicate with DTE, accomplish the exchange of data, adopt plastic flow control (XON/XOFF) mode to work between DTE and the DCE by three-way mode.For helping the user to understand the working condition of equipment, set up indicating circuit in the system in addition, be respectively applied for indication serial ports transceive data, modem line carrier wave, ring indication, information such as voice channel state and self check.
The utlity model has the advantage that networking is simple, the simultaneous data and speech transmission real-time is good, communication distance is long, be convenient to technology upgrading.
1) by the multiplexing packing and the demultiplexing of system control processor realization data, voice, MODEM is set to data pattern, finally realizes the extraordinary full-duplex data of real-time, speech simultaneous interpretation.
The good effect of this innovative point is: CPU realizes the design of the multiplexing and demultiplexing of data, voice; The speed of voice signal can be set according to the actual requirements flexibly; Through the reasonable disposition traffic rate, can realize remote transfer of data, as use common multiple twin insulate line can realize 15 kilometers data, speech duplex transmission; And can communication delay be strict controlled in the 60ms, realize long-distance transmissions under the situation of assurance speech quality.
2) adopt the DSP digital technology to carry out voice compression coding.
The good effect of this innovative point is: can dispose the different voice compression coding mode flexibly according to different demands, under the prerequisite that guarantees speech quality, effectively prolong communication distance.
3) MODEM is set to data pattern, only is responsible for the data after the multiplexing packing of CPU, voice compound frame are transferred to far-end.
The good effect of this innovative point is: be convenient to technology upgrading.Development along with technology; The update of MODEM, the transmission rate of MODEM is increasingly high, from ADSL, HDSL, G.SHDSL etc.; Can be only to the MODEM raising of the transmission rate that can accomplish complete equipment of upgrading, and needn't change other functional module of equipment.
Description of drawings
Fig. 1 is the structural principle block diagram of the utility model.
Embodiment
As shown in Figure 1: the voice signal of transmitting terminal is imported by speech interface; Make it to become the digital signal of low rate through the voice compression coding module; Multiple connections such as the data-signal that it and computer is next and system's control signaling are a composite data stream; Change analog data signal through multiplexing into the modulation transmissions module, on light-duty insulate line, transmit through the transmission line interface.And the analog signal that receiving terminal receives from insulate line; At first through the multiplexing data-signal that becomes former transmission with the modulation transmissions module recovery; Pass through demultiplexing again; User data signal is through RS-232 data-interface input computer, and speech data then recovers analog voice signal through decoding and exports through speech interface, and the signalling coding signal is handled to guarantee carrying out smoothly of call by system control processor.
Claims (5)
1. one kind based on wired remote simultaneous data and speech transmission equipment; It is characterized in that comprising voice compression coding module, multiplexing and modulation transmissions module, system control processor, interface module and power module; Said interface module comprises data-interface, transmission line interface and speech interface; Said multiplexingly be connected with system control processor, voice compression coding module, data-interface, transmission line interface respectively with the modulation transmissions module; The voice compression coding module is connected with speech interface, and said transmission line interface is connected with system control processor with speech interface.
2. according to claim 1 based on wired remote simultaneous data and speech transmission equipment, it is characterized in that said system control processor is the singlechip chip with built-in ROM and RAM.
3. according to claim 1 based on wired remote simultaneous data and speech transmission equipment, it is characterized in that data-interface is the RS-232C interface.
4. according to claim 1 based on wired remote simultaneous data and speech transmission equipment, it is characterized in that the transmission line interface is the insulate line interface.
5. according to claim 1 based on wired remote simultaneous data and speech transmission equipment, it is characterized in that multiplexingly being connected with external memory with the modulation transmissions module, said external memory is a nonvolatile memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204789066U CN202340257U (en) | 2011-11-28 | 2011-11-28 | Wire-based remote data-speech-transmission apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204789066U CN202340257U (en) | 2011-11-28 | 2011-11-28 | Wire-based remote data-speech-transmission apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202340257U true CN202340257U (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204789066U Expired - Lifetime CN202340257U (en) | 2011-11-28 | 2011-11-28 | Wire-based remote data-speech-transmission apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202340257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412354A (en) * | 2016-10-10 | 2017-02-15 | 邦彦技术股份有限公司 | Information transmission equipment and method |
-
2011
- 2011-11-28 CN CN2011204789066U patent/CN202340257U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106412354A (en) * | 2016-10-10 | 2017-02-15 | 邦彦技术股份有限公司 | Information transmission equipment and method |
| WO2018068340A1 (en) * | 2016-10-10 | 2018-04-19 | 邦彦技术股份有限公司 | Information transmission device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |