SWAN 2 Concentrator Installation and Support Guide

Glossary
SWAN 2 Concentrator Installation and Support Guide—429593-010
Glossary-6
WAN
kilohertz group band circuits. It contains the 34-pin V.34 connector specifications
normally implemented on a modular RJ-45 connector. V.35 is the equivalent of
Electronics Industry Association (EIA) RS-422/RS-449.
WAN. See wide area network (WAN).
WAN port. A 50-pin connector on the back panel of each SWAN 2 concentrator that
provides a data channel for connection to other devices or computers. The SWAN 2
concentrator has 12 WAN ports. See also interface converter cable.
WAN subsystem SCF interface. The Subsystem Control Facility (SCF) commands
supported specifically for the wide area network (WAN) subsystem. WAN subsystem
SCF commands are directed to the WAN manager process.
wide area network (WAN). A network that operates over a larger geographical area than a
local area network (LAN)—typically, an area with a radius greater than one kilometer.
The elements of a WAN may be separated by distances great enough to require
telephone communications. Contrast with local area network (LAN).
X.21. A digital signaling interface recommended by the International Telecommunications
Union, Telecommunication Standardization Sector (ITU-T) that includes specifications
for data terminal equipment/data communications equipment (DTE/DCE) physical
interface elements, alignment of call control characters and error checking, elements of
the call control phase for circuit switched services, data transfer at or below 9600
bits/second, and test loops.
$ZZWAN. The name of the wide area network (WAN) subsystem manager process. See
WAN port.