CN108712184A - A kind of handheld terminal for supporting network talkback and DMR intercommunication intercommunications - Google Patents

A kind of handheld terminal for supporting network talkback and DMR intercommunication intercommunications Download PDF

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Publication number
CN108712184A
CN108712184A CN201810468362.1A CN201810468362A CN108712184A CN 108712184 A CN108712184 A CN 108712184A CN 201810468362 A CN201810468362 A CN 201810468362A CN 108712184 A CN108712184 A CN 108712184A
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China
Prior art keywords
module
dmr
intercommunication
handheld terminal
machines
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CN201810468362.1A
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Chinese (zh)
Inventor
赖映青
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Shenzhen Tintele Technology Co Ltd
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Shenzhen Tintele Technology Co Ltd
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Priority to CN201810468362.1A priority Critical patent/CN108712184A/en
Publication of CN108712184A publication Critical patent/CN108712184A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827Portable transceivers
    • H04B1/3833Hand-held transceivers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40Circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10Push-to-Talk [PTT] or Push-On-Call services

Abstract

The present invention is suitable for intercommunication communicating tech improvement areas, provide a kind of handheld terminal for supporting network talkback and DMR intercommunication intercommunications, the handheld terminal includes network talkback module and digital intercom module, the network talkback module number communicates to connect the digital intercom module, the network talkback module, the network talkback signal received is reported in interaction for carrying out voice and signaling data with digital intercom module;The digital intercom module, the interaction for the information conversion of traditional intercommunication to be carried out to voice and signaling data with network talkback module, completes local intercommunication data exchange and report.The equipment of two integrated DMR+POC can be combined into a DMR intermediate station, and can realize that local multimedia audio file or telephone voice data are transmitted directly to each intercom receiving terminal, realize different communication by the IP interconnections of DMR.

Description

A kind of handheld terminal for supporting network talkback and DMR intercommunication intercommunications
Technical field
The invention belongs to intercommunication communicating tech improvement areas more particularly to a kind of support network talkback and DMR intercommunication intercommunications Handheld terminal.
Background technology
Narrowband intercom does not need mobile base station, end pair can be realized in router since itself is independent of internet End communication, while its occupied bandwidth is small, only needs 6.25KHz to 25KHz that can meet good voice, short message communication, makes it Long it can be stored in market, as the indispensable important member of emergency command controlling equipment.
Narrowband intercom experienced the differentiation from the analog walkie-talkie of early stage digital walkie-talkie by now, and analog walkie-talkie is only It can carry out voice communication;Digital walkie-talkie also supports many control signalings in addition to voice call function, distant can swoon, distant gets killed certain A specified handheld terminal, while each digital intercom has unique identity recognition number, when call the recognizable side of speaking Identity ID solves the important problem of simulation intercommunication epoch " can not know that who is speaking ".
It is usually 2-5 kilometers or so that traditional narrowband intercom, which only has the power of 4W-5W, activity extent,(Specifically regard surrounding Depending on the blocking degree of environment)If activity extent need to be expanded, activity extent can only be expanded by way of increasing trunk desk One times, to support the communication coverage area of bigger, then it can only select the relaying IP interconnection networking modes of digital walkie-talkie.And one As trunk desk be all fixed, volume is heavy, usually requires the external high-gain aerial for being up to 3 meters, and by feeder line by day Line is fixed on building roof, and this networking mode is quite inconvenient.
With the promotion of mobile communications network bandwidth, network talkback is constantly ripe, but because network talkback needs consumption data Flow, and most intercommunication projects all also maintain hardware intercommunication, should not all replace;It is commonly present leading body at a higher level's network at present The case where intercommunication, subordinate employee's hardware intercommunication.In this way, realizing that network talkback becomes very necessary with hardware intercommunication intercommunication.DMR Digital walkie-talkie enables single 12.5KHz channels to support two synchronous independent calls, technological merit by TDMA technologies So that it occupies the digital walkie-talkie market of big share, therefore, it is necessary to a kind of network talkbacks in fact and the intercommunication of DMR digital intercoms Device.
Invention content
The purpose of the present invention is to provide a kind of handheld terminals for supporting network talkback and DMR intercommunication intercommunications, it is intended to solve Above-mentioned technical problem.
The invention is realized in this way a kind of handheld terminal for supporting network talkback and DMR intercommunication intercommunications, the hand-held end End includes network talkback module and digital intercom module, and the network talkback module number communicates to connect the digital intercom mould Block, the network talkback module, the interaction for carrying out voice and signaling data with digital intercom module, the network that will be received Intercommunication signal is reported;The digital intercom module, for the information conversion of traditional intercommunication to be carried out voice with network talkback module With the interaction of signaling data, local intercommunication data exchange and report are completed.
The present invention further technical solution be:The network talkback module include central processing unit, data communication module, First audio coding decoding module, microphone and loud speaker, the central processing connect the data communication module two-way communication, institute It states the first audio coding decoding module and connects the central processing unit two-way communication, the output end of first audio coding decoding module The input terminal of the loud speaker is connected, the output end of the microphone connects the input terminal of first audio coding decoding module.
The present invention further technical solution be:The network talkback module further includes that module is locally stored, the local Memory module connects the central processing unit two-way communication.
The present invention further technical solution be:The data communication module includes Wifi unit and mobile comm unit, The Wifi unit and mobile comm unit connect two-way communication, the mobile comm unit packet with the central processing unit respectively Ambulatory transceiver antenna and modem are included, the ambulatory transceiver antenna connects the modem two-way communication.
The present invention further technical solution be:The network talkback module further includes display module, the display module Input terminal connect the output end of the central processing unit, the display module includes display unit and display screen, the display The output end of unit connects the input terminal of the display screen.
The present invention further technical solution be:The digital intercom module includes the second audio coding decoding unit, asynchronous Receiving-transmitting transmitter and wireless receiving transmitter unit, the second audio coding decoding unit input terminal connect the output of the microphone End, the output end of the second audio coding decoding unit connect the input terminal of the loud speaker, the wireless receiving transmitter unit It is separately connected the second audio coding decoding unit and asynchronous receiving-transmitting transmitter two-way communication, the asynchronous receiving-transmitting transmitter connection The central processing unit two-way communication.
The present invention further technical solution be:The CSBK information hair of the asynchronous receiving-transmitting transmitter acquisition digital intercom frame Give central processing unit.
The present invention further technical solution be:The CSBK information includes Radio ID of launch party, type of call, exhales It is ID, time slot and colour coding.
The present invention further technical solution be:The handheld terminal further includes shell, the network talkback module and number Word intercommunication module is set on PCB control panels, and the PCB control panels are disposed in the housing.
The present invention further technical solution be:The shell includes face-piece and rear shell, the face-piece and the rear shell card It closes connection or screw connection or screw and is connected together, the face-piece is open equipped with screen, and the screen opening is equipped with protection glass The top surface of glass, the face-piece is equipped with multiple circular opens.
The beneficial effects of the invention are as follows:It by the transmitting of DMR intercoms and receives audio recording and is saved in local, back up this A little data, such client can repeat playing these audio datas, as evidence etc. is retained, realize mutually turning for DMR and POC, make Realize that the bridge of both terminal mutuals of hardware intercommunication Yu POC intercommunications, the equipment of two integrated DMR+POC can combine for gateway For a DMR intermediate station, and it can realize the IP interconnections of DMR, by local multimedia audio file or telephone voice data, It is transmitted directly to each intercom receiving terminal, realizes different communication.
Description of the drawings
Fig. 1 is the structure diagram of support network talkback and the handheld terminal of DMR intercommunication intercommunications provided in an embodiment of the present invention One.
Fig. 2 is the structure diagram of support network talkback and the handheld terminal of DMR intercommunication intercommunications provided in an embodiment of the present invention Two.
Fig. 3 is the structure diagram of support network talkback and the handheld terminal of DMR intercommunication intercommunications provided in an embodiment of the present invention Three.
Fig. 4 is the structure diagram of support network talkback and the handheld terminal of DMR intercommunication intercommunications provided in an embodiment of the present invention Four.
Fig. 5 is the realization schematic diagram that DMR provided in an embodiment of the present invention and POC mutually turn network.
Fig. 6 is the realization schematic diagram of portable trans-regional DMR trunk desks provided in an embodiment of the present invention.
Specific implementation mode
As shown in figures 1 to 6, the handheld terminal provided by the invention for supporting network talkback and DMR intercommunication intercommunications, it is described hand-held Terminal includes network talkback module and digital intercom module, and the network talkback module number communicates to connect the digital intercom mould Block, the network talkback module, the interaction for carrying out voice and signaling data with digital intercom module, the network that will be received Intercommunication signal is reported;The digital intercom module, for the information conversion of traditional intercommunication to be carried out voice with network talkback module With the interaction of signaling data, local intercommunication data exchange and report are completed.
The network talkback module includes central processing unit, data communication module, the first audio coding decoding module, microphone And loud speaker, the central processing connect the data communication module two-way communication, the first audio coding decoding module connection The output end of the central processing unit two-way communication, first audio coding decoding module connects the input terminal of the loud speaker, The output end of the microphone connects the input terminal of first audio coding decoding module.
The network talkback module further includes that module is locally stored, and the module that is locally stored connects the central processing unit Two-way communication.
The data communication module includes Wifi unit and mobile comm unit, the Wifi unit and mobile comm unit Two-way communication is connect with the central processing unit respectively, the mobile comm unit includes ambulatory transceiver antenna and modulation /demodulation Device, the ambulatory transceiver antenna connect the modem two-way communication.
The network talkback module further includes display module, and the input terminal of the display module connects the central processing unit Output end, the display module includes display unit and display screen, and the output end of the display unit connects the display screen Input terminal.
The digital intercom module includes that the second audio coding decoding unit, asynchronous receiving-transmitting transmitter and wireless receiving transmitting are single Member, the second audio coding decoding unit input terminal connect the output end of the microphone, the second audio coding decoding unit Output end connect the input terminal of the loud speaker, the wireless receiving transmitter unit is separately connected second audio coding decoding Unit and asynchronous receiving-transmitting transmitter two-way communication, the asynchronous receiving-transmitting transmitter connect the central processing unit two-way communication.
The CSBK information of the asynchronous receiving-transmitting transmitter acquisition digital intercom frame is sent to central processing unit.
The CSBK information includes Radio ID, type of call, calling ID, time slot and the colour coding of launch party.
The handheld terminal further includes shell, and the network talkback module and digital intercom module are set on PCB control panels, The PCB control panels are disposed in the housing.
The shell includes face-piece and rear shell, and the face-piece is connected together with the rear shell or screw is connect or screw and card Connection is closed, the face-piece is open equipped with screen, and the screen opening is equipped with protective glass, and the top surface of the face-piece is equipped with multiple circles Shape is open.
The design of handheld terminal can be with shown in reference chart 1.The peripheral equipment of master chip includes wireless WIFI, UART (Universal Asynchronous Receiver/Transmitter are a kind of asynchronous receiving-transmitting transmitters), audio coding decoding Chip(Audio Codec (codec)), mobile data network etc., master chip is loaded with after Android operation system, can be run Play network talkback APP(POC), in addition (Digital Mobile Radio numbers are right by handheld terminal also integrated digital intercom DMR Say machine).The master chip of DMR intercoms and mobile terminal interconnects, and is substantially carried out the interaction of voice and signaling data, based on such Hardware design, so that it may which the intercommunication and conversion of this two kinds of intercommunication functions are realized in the interaction for realizing DMR data and network talkback data. Such as DMR intercommunications acquire voice, while passing through UART and acquiring DMR frames when receiving audio call by audio Codec chip CSBK information(Main Radio ID comprising launch party, type of call, calling ID, time slot, colour coding etc.), and by both signals It is sent by POC network talkbacks, in this way, other POC terminals can receive this section of DMR information.
In order to realize the intercommunication between POC and DMR intercoms, it is necessary to by audio data and control data import system.Such as It is the general frame figure of system shown in Fig. 2, DMR modules support that standard DMR Tire II, CPU are the cell phone platform of standard, can With operational network intercommunication POC softwares, the data network of WIFI or mobile phone card may be selected in network, and the voice of intercommunication call also may be selected It is saved in and card Storage is locally stored.
DMR receives flow as shown in figure 3, signaling data is interacted by UART interface with CPU, finally may be selected to be shown in end The display screen at end is transmitted to subordinate's link by POC;Audio data may be selected to be output to after codec encoding and decoding Speaker, it forwarded by network talkback, be saved in local Storage.
DMR emits flow as shown in figure 4, under simple DMR talkback modes, conduct after MIC signals are encoded through codec The audio input signal of DMR is sent by radio frequency again;If the triggering of calling comes from network talkback POC, what POC was forwarded Audio data is given to DMR modules after codec codings, and the signaling data that POC is forwarded gives DMR moulds by UART interface Block, final voice are uniformly gone out by the radio-frequency transmissions of DMR modules with signaling information.
Foregoing provide the connections between the global design scheme of this system and each peripheral hardware module.So The intercom system designed with this, it is necessary to realize the mutual rotating function of DMR and POC.
Provide corresponding step realization:
1. preparing a mobile terminal for supporting DMR and POC simultaneously(It is named as A machines), DMR intercommunication functions are opened, according to communication Bipartite agreement sets the parameter values such as the identity ID of intercom, tranmitting frequency, receives frequency, can with it is other right Say device intercommunicating.
2. opening the network talkback POC functions of A machines, and the identity ID of the login account of POC and DMR are bound, the two Number facilitates memory it is preferably provided as the same.
3. preparing a tradition DMR hardware intercom(It is named as B machines), operation POC software regular handset(Life Entitled C machines), DMR parameter settings and the A machines of B machines match, and POC parameters and the A machines of C machines match, tri- station terminals of A/B/C Identity code is both configured to different value.
4. the transmitting of B machines is pressed to speak, after A machines receive the calling of B machines, voice data and letter that A machines DMR is received Data are enabled to issue the POC of A machines by codec and UART interface respectively, the POC of A machines goes out the data forwarding that this section comes from DMR It goes, is issued to C machines again by remote server;Realize the function of B machines DMR calling C machines POC.
5. pressing the transmitting of C machines to speak, A machines, after A machines receive the calling of C machines, A machines are called by remote server Voice and the signaling data that POC is received issue the DMR of A machines by codec and UART interface respectively, the DMR of A machines by this section from The data that POC comes are gone out by radio-frequency transmissions, are given to B machines;Realize the function of C machines POC calling B machines DMR.
6. for A machines, no matter terminating the data received from DMR or POC, can select to be stored in local Storage, as follow-up necessary call evidence.
7. A machines also can be used as individual DMR intercoms and use, MIC signals are given to after codec codings when transmitting DMR modules are simultaneously gone out from its radio-frequency transmissions;The audio data of DMR modules is output to after codec is decoded when reception Speaker.Simultaneously as this system has the presence of platform master chip CPU, may be selected the DMR data conversed being stored in local Storage.
8. A machines also can be used as individual POC intercommunications and use, MIC signals are given to POC after codec codings and pass through when transmitting Network is sent;The audio data of POC is output to Speaker after codec is decoded when reception.Simultaneously as this system There is the presence of platform master chip CPU, may be selected the POC data conversed being stored in local Storage.
Above step merely provides the example that a DMR and POC signals are converted mutually, in fact the system also support it is other its Its function.For example multimedia audio on Storage can be selected, and it is sent to other terminals by DMR or POC, it can To carry out distant dizzy, the distant operations such as get killed to POC terminals by DMR, vice versa.
DMR and POC mutually turns the embodiment of gateway:
As shown in figure 5, A machines are common DMR intercoms, B machines are DMR+POC all-in-one machines, and C machines are POC intercoms.DMR intercommunications The effective communication distance of machine A and DMR+POC all-in-one machine B is 3km(Transmission power depending on intercom itself).B machines and C machines Speech range is unrestricted, as long as the two can connect Internet, can achieve the effect that global intercommunication.Pass through this combination Mode is, it can be achieved that DMR and POC intercommunication intercommunications.
Specific communication is implemented as follows:
1)The number Unified number rule of the Radio ID of DMR intercommunications and POC accounts, make its respective number have uniqueness; For DMR+POC all-in-one machines, the number of DMR Radio ID and POC accounts uses same, realization number binding.
2)A machines and the DMR parameters of B machines are matched, such as:Uniformly it is set as TX frequencies 409.75MHz, Rx frequency 409.75MHz, method of calling are exhaled for group, and calling ID is 1, and it is 1 to receive ID, colour coding 1;Two machines have been respectively set respective Radio ID。
3)The POC of the POC of B machines and C machines is matched, can intercommunication POC intercommunications also needed to support POC intercommunications Cloud server is configured, server plays the role of forwarding voice and instruction.
4)A machines initiate audio call, after B machines receive the voice messaging of A machines, by the Radio of speech message and A machines DMR ID is forwarded by POC, relays to C machines by server, C machines can receive the audio call of A machines, and can recognize It is the Radio ID of A machines, it is known that be that A machines are calling.
5)C machines initiate audio call, and after B machines receive the voice messaging of C machines, the User ID of speech message and C machines is led to It crosses DMR and is transmitted to A machines(Before forwarding, the Radio ID of itself are revised as the User ID of C machines by B machines temporarily, extensive after transmitting It is itself original Radio ID again), A machines can receive the calling of C machines, and it is that C machines are calling that can recognize.
So far, DMR intercoms A and POC intercoms C just realize intercommunication, theoretically simply by the presence of the place of Internet, Speech range is all unrestricted;Since digital intercom DMR is compared to simulation intercommunication, when call, is also attached to identity ID and calling ID etc., These information can be forwarded by POC networks, therefore when A machines and C machines are conversed, and both sides also can know that the body of other side Part.
Embodiment as portable trans-regional DMR intermediate stations:
As shown in fig. 6, A machines are common DMR intercoms with D machines, B machines are DMR+POC all-in-one machines with C machines.B machines, C machines and POC Server forms one group of trans-regional DMR server, for example:B machines are in China, and C machines are in the U.S., combination side in this way The DMR intercommunication D machines that the U.S. is called through in the DMR intercommunication A machines of China may be implemented in formula, as long as in effective between A and B, C and D DMR activity extents in, can realize A and D DMR call.And since both B, C are common handheld terminal, if two User is respectively with A+B machines and C+D machines, no matter being in any corner of the earth, can only ensure that both B, C can be connected Internet, A, D both sides can converse.
Specific communication is implemented as follows:
1)The parameter settings such as A machines and the DMR frequencies of B machines are good, such as transmitting-receiving frequency is unified for 409.75MHz, colour coding 1 is exhaled Type is made to be exhaled for group, calling ID is 1, and it is respectively 1,2 to receive ID as 1, Radio ID;Enable both DMR intercommunications;Similarly, C machines It is unified for 157.75MHz with D machine transmitting-receiving frequencies, colour coding 1, type of call is exhaled for group, and calling ID is 1, and it is 1, Radio to receive ID ID is respectively 3,4;Enable both DMR intercommunications.The Radio ID of tetra- machines of A/B/C/D must not be repeated, and realize identity ID only One property, while the POC ID of B machines are consistent with the Radio ID of oneself, the Radio ID mono- all for the POC ID of 2, C machines and oneself It causes, is all 3.
2)Between two machines of B/C and POC server, it is necessary to assure internet communication is normal, could support POC intercommunications, completes Forwarding capability.
3)When A machines initiate audio call, when the DMR of B machines receives the calling of A, by the call information of A machines(Including voice, Type of call, the Radio ID etc. for calling ID, A machine)It is sent by the POC intercommunications of itself, by specified after server The POC intercommunications of C machines are forwarded to, after the POC intercommunications of C machines receive signal of this section from B machines, by the calling parameter of DMR(Including exhaling It is type, calling ID, Radio ID etc.)It is modified to the DMR intercoms of itself temporarily, and voice messaging is sent out by radio frequency It goes.D machines can receive the complete DMR call signals of A machines at this time, while distinguishable this time calling comes from A machines.
4)When D machines call A machines, the flow of signal is same as above;So just realize the trans-regional intercommunications of DMR between A and D.If A With the ends D not instead of single terminal, the group of multiple terminals composition, such as the ends A are A1, A2...An, D1, D2...Dn, then A groups Transregional field communication equally can be achieved between D groups.
So far, the transregional field communications of DMR are realized between A and D, and trans-regional DMR transfers are realized by B, C and POC server Platform function.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.

Claims (10)

1. a kind of handheld terminal for supporting network talkback and DMR intercommunication intercommunications, which is characterized in that the handheld terminal includes network Intercommunication module and digital intercom module, the network talkback module number communicate to connect the digital intercom module, the network Intercommunication module, the interaction for carrying out voice and signaling data with digital intercom module, the network talkback signal received is broadcast Report;The digital intercom module, for the information conversion of traditional intercommunication to be carried out voice and signaling data with network talkback module Interaction, complete local intercommunication data exchange and report.
2. handheld terminal according to claim 1, which is characterized in that the network talkback module include central processing unit, Data communication module, the first audio coding decoding module, microphone and loud speaker, the central processing connect the data and communicate mould Block two-way communication, first audio coding decoding module connect the central processing unit two-way communication, and first audio compiles solution The output end of code module connects the input terminal of the loud speaker, and the output end of the microphone connects first audio coding decoding The input terminal of module.
3. wanting the handheld terminal described in 2 according to right, which is characterized in that the network talkback module further includes that mould is locally stored Block, the module that is locally stored connect the central processing unit two-way communication.
4. wanting the handheld terminal described in 3 according to right, which is characterized in that the data communication module includes Wifi unit and movement Communication unit, the Wifi unit and mobile comm unit connect two-way communication, the movement with the central processing unit respectively Communication unit includes ambulatory transceiver antenna and modem, and the ambulatory transceiver antenna connects the modem two-way Letter.
5. wanting the handheld terminal described in 4 according to right, which is characterized in that the network talkback module further includes display module, institute The input terminal for stating display module connects the output end of the central processing unit, and the display module includes display unit and display Screen, the output end of the display unit connect the input terminal of the display screen.
6. wanting the handheld terminal described in 5 according to right, which is characterized in that the digital intercom module includes the second audio coding decoding Unit, asynchronous receiving-transmitting transmitter and wireless receiving transmitter unit, the second audio coding decoding unit input terminal connect the wheat The output end of gram wind, the output end of the second audio coding decoding unit connects the input terminal of the loud speaker, described wirelessly to connect It receives transmitter unit and is separately connected the second audio coding decoding unit and asynchronous receiving-transmitting transmitter two-way communication, the asynchronous receiving-transmitting Transmitter connects the central processing unit two-way communication.
7. wanting the handheld terminal described in 6 according to right, which is characterized in that the asynchronous receiving-transmitting transmitter acquisition digital intercom frame CSBK information is sent to central processing unit.
8. wanting the handheld terminal described in 7 according to right, which is characterized in that the CSBK information include launch party Radio ID, Type of call, calling ID, time slot and colour coding.
9. wanting 1-8 any one of them handheld terminals according to right, which is characterized in that the handheld terminal further includes shell, institute It states network talkback module and digital intercom module is set on PCB control panels, the PCB control panels are disposed in the housing.
10. wanting the handheld terminal described in 9 according to right, which is characterized in that the shell includes face-piece and rear shell, the face-piece with The rear shell is connected together or screw connection or screw and is connected together, and the face-piece is equipped with screen and is open, and the screen is open Equipped with protective glass, the top surface of the face-piece is equipped with multiple circular opens.
CN201810468362.1A 2018-05-16 2018-05-16 A kind of handheld terminal for supporting network talkback and DMR intercommunication intercommunications Pending CN108712184A (en)

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CN203435109U (en) * 2013-01-16 2014-02-12 深圳市腾捷实业有限公司 Underground mine real-time communication system
CN204425558U (en) * 2014-12-31 2015-06-24 深圳市鼎泰富科技有限公司 A kind of system based on intercom mobile terminal
CN106454757A (en) * 2016-11-23 2017-02-22 北京坦达信息科技有限公司 Communication encryption and decryption method for wireless broadband network
CN207321245U (en) * 2017-11-03 2018-05-04 山东迪威滕翰信息技术有限公司 Enhanced multimode two-way integral encrypts cluster intercommunication hand-held microphone

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CN109714734A (en) * 2018-12-12 2019-05-03 创扬通信技术(深圳)有限公司 DMR system, the wireless communications method of DMR, device and terminal device
CN109714734B (en) * 2018-12-12 2022-07-12 创扬通信技术(深圳)有限公司 DMR system, wireless communication method and device of DMR and terminal equipment
CN111836208A (en) * 2019-04-22 2020-10-27 海能达通信股份有限公司 Speaking right control method and device
CN110120999A (en) * 2019-05-14 2019-08-13 深圳市沃特沃德股份有限公司 Intercommunication recording method, device, computer equipment and storage medium
CN110289877A (en) * 2019-07-17 2019-09-27 深圳市卡卓创新科技有限公司 Public network is to DMR intercommunication bimodulus relaying intercom of making peace
CN111083803A (en) * 2019-12-09 2020-04-28 深圳市普天宜通技术股份有限公司 Method and system for realizing communication between public network interphone and DMR interphone
CN111628796A (en) * 2020-05-22 2020-09-04 江苏长城消宝安防科技股份有限公司 Shoulder miaow of integrated intercom communication and pilot frequency relay function
CN111836217A (en) * 2020-06-29 2020-10-27 浙江大华技术股份有限公司 Intercommunication system for public network cluster and digital cluster
CN111836217B (en) * 2020-06-29 2022-06-24 浙江大华技术股份有限公司 Intercommunication system for public network cluster and digital cluster
CN113114295A (en) * 2021-04-02 2021-07-13 深圳市卡卓无线信息技术有限公司 Interphone communication method and interphone

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