USRobotics U.S. Robotics SureConnect ADSL Ethernet/USB Router User Manual

Page 247

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U.S. Robotics SureConnect ADSL Ethernet/USB Router User Guide

network.

SVC (Switched Virtual Circuit) - Virtual connection between two variable endpoints
on the network. The switch makes at the beginning of the call, and breaks at the end
of the call. A frame relay and ATM networking term.

T

TCP/IP (Transmission Control Protocol/Internet Protocol) - Set of protocols
designed to link dissimilar computers that use various networks and LANs.

Topology - Geometric physical or electrical configuration that describes a local
communication network. The most common distribution system topologies are the
bus, ring, and star.

U

UDP (User Datagram Protocol) - A protocol within the TCP/IP protocol suite. When
reliable delivery is unnecessary, communications may use UDP instead of TCP.

UBR (Unspecified Bit Rate) - Best effort service that does not require tightly
constrained delay and delay variation. UBR provides no specific quality of service or
guaranteed throughput.

USB (Universal Serial Bus) - External bus standard that supports data transfer rates
of 12 Mbps.

V

VCI (Virtual Channel Identifier) - Address of a virtual circuit. An integer that ranges
from 0 to 65,535. The integer identifies a virtual channel that cells may traverse.

VPI (Virtual Path Identifier) - Address of a virtual path to a connection on an ATM
network. An integer that ranges from 0 to 4,095.

W-X-Y-Z

WAN (Wide Area Network) - Network base that covers a large geographic area.

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