What do you mean by data transmission?

What does transparent transmission mean in communication networks?

Transparent transmission refers to a data transmission mode that has nothing to do with the medium, modulation and demodulation mode, transmission mode and transmission protocol of the transmission network.

It's like express mail, which may reach your hands through a variety of combined modes of transportation, such as bicycles, cars, trains and planes, but you don't have to care about what happens in it.

What is the data transparent transmission function? 5 points

Data transmission? If you are talking about a switch, this is the function of the trunk port. Trunk ports are used for VLANs. Transparent transport can specify which VLANs can pass through this trunk port, and VLAN ID that are not in the list cannot pass through this trunk port.

What is digital transmission?

Suppose there is data transmitted through the network. The entrance of this network is A, and the exit is B. When data S arrives at A, A is responsible for encapsulating S, for example, S is ip data, and A is encapsulated in two-layer format. In the whole network, it is transmitted by using the second layer. When it reaches the exit B, it is unpacked and restored to the original ip structure of S. For S, its structure and data have not changed through this network, so for S, this network is "transparent" and transparent transmission.

Transparent transmission technology: VoIP supports transparent transmission of numbers, and users can request to specify and display existing phone numbers, thus completely solving the inconvenience caused by changing phone numbers!

References:

iask.sina/b/45407 14

What is the meaning of wireless transparent transmission module and what fields are it used in?

Wireless transparent transmission is transparent transmission, which wirelessly sends the serial data to another module and converts the received data into original data.

How to understand vlan transparent transmission? Case description

Transparent transmission is transparent transmission. That is, the data does not change during transmission, and the devices at both ends of the network do not know the existence of the transmission network.

Transparent transmission of Vlan means that the data frame has not changed before and after passing through the switch vlan. In professional terms, Vlan transparent transmission means that the data frame structure remains unchanged and still carries Vlan ID information.

For example:

PC 1-switch 1-switch 2-PC2

Both switches have vlan2, and both PCs belong to vlan2. Therefore, the data frame sent by PC 1 to PC2 will be tagged with vlan2 after entering the switch, reach switch 2 through the middle trunk link, and then be tagged with vlan2 and sent to PC2. Although the switch will add/delete vlan tags when the data frame passes through two switches, the PCs at both ends will not know because they have received the data frame. In this process, the switch has no other actions except marking data frames, so the switch transparently transmits vlan data.

Reference information: zhidao.baidu/...bv9Vpa

What is Bluetooth transparent transmission?

It is transparent transmission, you give it data through serial port, and it can be directly sent to other Bluetooth receiving devices. You don't need to add any protocol yourself, just connect the serial port to the serial port of MCU, provide 3.3V power supply at the same time, and send the control pin to low level with MCU***, and you can complete transparent transmission. I wish you success!

What is the difference between DTU transparent transmission and custom protocol?

DTU is a data transmission module, which uses GPRS, CDMA, 3G and 4G wireless networks to package serial data and automatically send it to the designated server address. Generally widely used in industrial places.

DTU transparent transmission is a wireless transparent transmission communication protocol without any manufacturer protocol. Custom protocol refers to loading some communication protocols of wireless module manufacturers, and adding their own protocol packages or conversion protocols on the basis of the original transparent data. WCTU(DTU)3 12 1 for Na # communication supports transparent transmission, user-defined protocol, short message, modbus protocol and other modes, and has strong compatibility, which is suitable for various industrial automation applications.

How to transmit data transparently using 8266

Many times, when using 8266, I don't know how to transmit data transparently. Below I will use 8266 as the configuration command of transparent transmission for your reference, hoping to help.

8266WiFi module configuration operation is as follows:

①AT+CWMODE=3 is set to AP+STA mode * * *.

② at+cwjap = "xxxx ","xxxxxxxx "connection router (home router name+password)

③AT+CIPMUX=0 is set to single link mode.

④AT+CIPMODE= 1 Open transparent transmission mode.

⑤ at+savetranslink = 1, "192.1.100", 9999, "TCP" saves the IP and port number of the connected remote server (note that the IP address is TCP sever you opened.

⑥ at+cipstart = "TCP ","192.168.1.100 ",9999 is an execution operation.

⑦AT+CIPSEND enters transparent transmission.

Well, after the above operations, 8266 enters TCP transparent transmission mode. You can send the data you want directly through the serial port.

Hello, I want to ask again, are those RJ-45 interfaces on SCB board used for receiving business or data transmission? Thank you, 3Q.

This question is simple! The functions of RJ-45 interface on SCB are: 1, Ethernet network management interface, RJ-45 connector, speed10m/100m2,2, ALMOUT 1, modem(F) 1 transparent data port. 3, 3, OUT2 1 transparent data port, second switch output port, debugging serial port, synchronous time interface. RJ-45 connector. 4,4 (F3), IN 1/2 1 transparent data port, 1 and 2 switch input port, synchronous time interface. RJ-45 connector. 5.F2 and IN3/4 1 transparent data ports, and the input ports of the 3rd and 4th switches. RJ-45 connector.

What chip is used for Bluetooth module that supports both audio and data transmission?

Bluetooth module supporting audio and data transmission at the same time is a dual-mode Bluetooth module, and CSR8645 chip can be used.