Ericsson HM121dp, HM121di manual User name, VPI and VCI

Glossary

USB

Short for Universal Serial Bus, an external bus standard that supports data transfer rates of 12 Mbps. A USB port can be used to connect peripheral devices, such as mice, modems, and keyboards. USB also supports Plug-and-Play installation and hot plugging.

User name

A name used to gain access to a computer system. User names (and often passwords) are required in multiuser systems.

VPI and VCI

A VPI (Virtual Path Identifier) is an 8-bit field while VCI (Virtual Channel Identifier) is a 16-bit field in the ATM cell header. A VPI identifies a link formed by a virtual path and a VCI identifies a channel within a virtual path. A unique and separate VPI/VCI identifier is assigned in advance to indicate which type of cells follow.

WAN

Short for Wide Area Network, a computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs).

May 2003