Aastra AXD Installation And Maintenance Manual page 34

Ethernet LAN.
RJ cards
Expansion cards in RJ45 format; these cards are fitted with a front panel.
RUCV card
Bus interface card of an expansion cabinet providing the interface between the UCV card
of the main cabinet and the expansion cards in an expansion cabinet.
RUCV/RUCV-D
Bus interface card of an expansion cabinet providing the interface between the UCV-D
card of the main cabinet and the expansion cards in an expansion cabinet.
UCV card
Central Processing Unit card of an Aastra XS/XL iPBX.
UCV-D card
Central Processing Unit card of an Aastra Duplicated iPBX (AXD).
CSTA
Communication standard enabling telephone and computer applications to communicate
in client/server mode. Connection with the server is via either an X25 or TCP/IP link.
DISA (Direct Inward System Access)
Service used to provide users outside the installation with the same features as a set
connected directly to the iPBX.
Ethernet
Local area network (LAN) protocol using twisted (10 base T) or coaxial cable (10 Base 2
or 10 base 5) and which allows transfer at 10 Mbps in its basic version and 100 Mbps in
its fast version (Fast Ethernet).
TS
Time slot for a frame carried over a PCM link, which can be used notably as a medium for
voice or data communication.
LCR
Least Cost Routing service. Based on the number requested, this service provides
automatic selection of the optimum route, according to the distances and billing zones or
caller rights.
The extended LCR service is used to take into account the pricing offers of the various
operators.
iPBX
Private branch exchange: electronic device used to automatically route a company's
internal and external communications.
Class set
AMT/PTD/PBX/0058/4/6/EN
Page 34 01/2011
Installation and Maintenance Manual - Aastra 5000
Introduction