Avaya Communication Manager Administrator's Manual page 1799

ESPA
European Standard Paging Access
ETA
Extended Trunk Access; also Enhanced Terminal Administration
ETN
Electronic tandem network
ETSI
European Telecommunications Standards Institute
expansion archangel (EAA)
A network-control microprocessor located on an expansion interface (EI) port circuit pack in an
expansion port network. The EA provides an interface between the EPN and its controlling
switch-processing element.
expansion-archangel link (EAL)
A link-access function on the D-channel (LAPD) logical link that exists between a switch-processing
element and an expansion archangel (EA). The EAL carries control messages from the SPE to the EA
and to port circuit packs in an expansion port network.
expansion control cabinet
See expansion control
expansion control carrier
A carrier in a multicarrier cabinet that contains extra port circuit packs and a maintenance interface.
Also called expansion control cabinet in a single-carrier cabinet.
expansion interface (EI)
A port circuit pack in a port network that provides the interface between a PN's TDM bus/ packet bus
and a fiber-optic link. The EI carries circuit-switched data, packet-switched data, network control,
timing control, and DS1 control. In addition, an EI in an expansion port network communicates with
the master maintenance circuit pack to provide the EPN's environmental and alarm status to the
switch-processing element.
expansion port network (EPN)
A port network (PN) that is connected to the TDM bus and packet bus of a processor port network
(PPN). Control is achieved by indirect connection of the EPN to the PPN via a port-network link
(PNL). See also
Expert Agent Selection
A feature allowing incoming calls to be routed to specialized groups of agents within a larger pool of
agents.
extension-in
Extension-In (ExtIn) is the work state agents go into when they answer (receive) a non-ACD call. If
the agent is in Manual-In or Auto-In and receives an extension-in call, it is recorded by CMS as an
AUX-In call.
extension-out
The work state that agents go into when they place (originate) a non-ACD call.
external measurements
Those ACD measurements that are made by the External CMS adjunct.
extension
A 1- to 5-digit number by which calls are routed through a communications system or, with a
Uniform Dial Plan (UDP) or main-satellite dialing plan, through a private network.
Administrator's Guide for Avaya Communication Manager
November 2003
carrier.
port network (PN).
Glossary and Abbreviations
1799
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