Paradyne comsphere 3615 User Manual
Glossary
Glossary-3
3615-A2-GB20-20
December 1996
fallback
Retraining of a V.32 DBM at a lower rate or speed.
FCC
Federal Communications Commission. Board of commissioners that regulates all
interstate and foreign electrical communication systems that originate from the
United States.
interstate and foreign electrical communication systems that originate from the
United States.
Front-End Processor
(FEP)
(FEP)
A communications computer associated with a host computer that manages the
lines and routing of data through the network.
lines and routing of data through the network.
IEC
InterExchange Carrier. A company that provides inter-LATA (local exchange
carrier) telecommunication services, like AT&T, MCI
carrier) telecommunication services, like AT&T, MCI
r, and US SPRINTr. Access
to these services can be provided through DDS dedicated channels, a T1.5
dedicated access channel, or digital switched access (DSA) channels.
dedicated access channel, or digital switched access (DSA) channels.
LADS
Local Area Data Set (also called a limited-distance modem or LDM). This refers to
a mode of operation where the control and tributary DSUs are directly connected
but not passing through a DDS network.
a mode of operation where the control and tributary DSUs are directly connected
but not passing through a DDS network.
LATA
Local Area Transport Area. A region served by a local exchange carrier (LEC) that
consists of one or more area codes.
consists of one or more area codes.
LCD
Liquid Crystal Display. A thin sandwich of two sealed glass plates containing liquid
crystal material. When voltage is applied, the amount of light able to pass through
the glass plates is altered so that messages may be “written” on the display.
crystal material. When voltage is applied, the amount of light able to pass through
the glass plates is altered so that messages may be “written” on the display.
LEC
Local Exchange Carrier. A company that provides intra-LATA (local exchange
carrier) telecommunication services, like NYNEX or Bell South.
carrier) telecommunication services, like NYNEX or Bell South.
LED
Light-Emitting Diode. A light or status indicator on the diagnostic control panel
(DCP) that glows in response to the presence of a certain condition (e.g., Alrm).
(DCP) that glows in response to the presence of a certain condition (e.g., Alrm).
link-level address
NMS communications are directed to a tributary via a link-level address. It takes
the form of control network address/tributary network address (e.g., 157/04 – DSU
control address of 157 and tributary address of 04).
the form of control network address/tributary network address (e.g., 157/04 – DSU
control address of 157 and tributary address of 04).
LSD
The state of the received Line Signal Detect lead (V.24 circuit 109).
Network Management System
(NMS)
(NMS)
A set of diagnostic and configuration management tools for a data communication
network, consisting of software programs and dedicated computer hardware.
network, consisting of software programs and dedicated computer hardware.
non-disruptive diagnostics
Diagnostics that are transmitted over the in-band secondary channel or routed
through a DBM in Standby mode so that bandwidth assigned to the data is not
affected.
through a DBM in Standby mode so that bandwidth assigned to the data is not
affected.
non-disruptive session
Executing the command will not disrupt primary data.
permissive interface
A dial modem operating mode characterized by a fixed output power level of
– 9 dBm. It is one of two possible operating modes for a DBM connected to dial
lines (see programmable interface).
– 9 dBm. It is one of two possible operating modes for a DBM connected to dial
lines (see programmable interface).
option sets
Sets of configuration options that are related and fulfill a specific function. For
example, the DBM option set, which allows you to configure the DBM to perform
backup and restoral functions.
example, the DBM option set, which allows you to configure the DBM to perform
backup and restoral functions.