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1+1 cold backup
A backup mode in which two systems with the same functions are deployed, one in the active state and the other in the standby state with power off. Once the active system encounters a fault, the standby system takes over the service of the active system by manual intervention.
1+1 hot backup
A backup mode in which two systems with the same functions are deployed, one in the active state and the other in the standby state with power on. The standby system backs up the data of the active system automatically. Once the active system encounters a fault, the standby system takes over the service of the active system automatically or by manual intervention.
100BASE-TX
IEEE 802.3 Physical Layer specification for a 100 Mb/s CSMA/CD local area network over two pairs of Category 5 unshielded twisted-pair (UTP) or shielded twisted-pair (STP) wire.
3G
See 3rd Generation
3rd Generation
The third generation of digital wireless technology, as defined by the International Telecommunications Union (ITU). Third generation technology is expected to deliver data transmission speeds between 144 Kbps (kilobits per second) and 2 Mbps (megabits per second), compared to the 9.6 Kbps to 19.2 Kbps offered by second generation technology. Western Europe and Japan lead the world in adoption of 3G technology and services.
3WC
Parent Topic: Glossary