User`s guide

562
U
UBR Unspecified Bit Rate
UDP User Datagram Protocol
UMTS Universal Mobile Telecommunications System
USB Universal Serial Bus
V
VLAN Virtual Local Area Network
VPN Virtual Private Network
VRRP Virtual Router Redundancy Protocol
W
WAN Wide Area Network
WCDMA Wide-band Code-Division Multiple Access
WRED Weighted Random Early Dropping
W-WAN Wireless Wide Area Network
X
XOT X.25 Over TCP