ETSI
406 Communication Manager Guide to ACD Call Centers
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 carrier
on page 406.
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).
Expert Agent
Distribution-Least
Occupied Agent (EAD-
LOA)
An agent selection method for delivery of calls. With EAD-LOA implemented, calls
are delivered to the available agent with the highest skill level and the lowest
percentage of work time since login (compared to other available agents with the
same skill level).
See also EAD-MIA, UCD-LOA, and UCD-MIA.
Expert Agent
Distribution-Most Idle
Agent (EAD-MIA)
An agent selection method for delivery of calls. With EAD-MIA implemented, calls
are delivered to the available agent with the highest skill level who has been idle the
longest since their last ACD call (compared to other available agents with the same
skill level).
See also EAD-LOA, UCD-LOA, and UCD-MIA.
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.
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