Important Information

- U -

UBR

Sort for Unspecified Bit Rate. A type of ATM service that does not guarantee any throughput levels. This is used for applications, such as file transfers, that can tolerate delays.

UDP

Short for User Datagram Protocol, which is a connectionless transport service that dispenses with the reliability services provided by TCP. UDP gives applications a direct interface with IP and the ability to address a particular application process running on a host via a port number, without setting up a connection session.

UPnP

Short for Universal Plug and Play, a networking architecture that provides compatibility among networking equipment, software and peripherals of the 400+ vendors that are part of the Universal Plug and Play Forum. UPnP works with wired or wireless networks and can be supported on any operating system. UPnP boasts device-driver independence and zero- configuration networking.

Upstream

The direction of an upstream signal is from the user's computer to the ISP/service provider (uploading).

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.

- V -

VBR

Short for Variable Bit Rate. A type of ATM service that provides a specified throughput capacity but is not sent evenly. This is a popular choice for voice and videoconferencing data.

Virtual Server

A server, usually a Web server, that shares computer resources with other virtual servers. In this context, the virtual part simply means that it is not a dedicated server -- that is, the entire computer is not dedicated to running the server software. Virtual Web servers are a very popular way of providing low-cost web hosting services. Instead of requiring a separate computer for each server, dozens of virtual servers can co-reside on the same computer. In most cases, performance is not affected and each web site behaves as if it is being served by a dedicated server. However, if too

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Garmin HN294DP/DI manual UPnP, Upstream, Virtual Server