Connecting webcams to the network
Currently, a webcam can be connected to the network in several ways, which are based on different standards of data transmission.
10/100 MbitEthernet
This is the most popular way to transfer data from a webcam into the network. There are two standard networks of 10 Mbit Ethernet: 10Base2 (using coaxial cable) and 10BaseT (using twisted pair). 10Base2 is used very rarely because of the sensitivity of coaxial cable to external interference. Standard 100BaseTX uses twisted pair and provides data transfer speed 100 Mbps.
1000 Mbit Ethrnet, Gigabit Ethernet
The standard used here- 1000BaseTX is an improved version of 100BaseTX. This standard is used mainly for construction of highways of local networks.
Standard telephone modems
This is fairly common and the cheapest way to connect the web camera to the global network. The main disadvantage of this method is connection - low speed data transmission (the maximum speed of downloading data - 56 kbit / s, the maximum speed swap - 33.6 kbit / s). Connecting webcams modem is carried out through the serial port.
ISDN modems
Standard ISDN (Integrated services Digital Network) is used for the transmission of digital graphics, audio and video and other digital data on private or common digital telephone networks. Standard ISDN provides data transfer from a web camera at speeds up to 128 kbit / s on two channels.
xDSL modems
DSL (Digital Subscriber Line) - technology that provides a broad bandwidth for a simple copper telephone wire. The speed of data transmission with webcams can vary depending on the company providing this service. On the average, it is 1 Mbps for downloading data and 250 kbit / s for the swap.
Cable modems
Cable modem is a modem that provides access to the Internet via television cable. Cable modems using asymmetrical technology are the best suited for user ‘s access to the Internet. At the same time achieving maximum speed of receiving data from a webcam in such a modem can reach about 40 Mbps (although it does not exceed usually 1 Mbps) and data transfer speed is around 10 Mbps.
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