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Preface
FiberPoint Structured Wiring Enclosure Installation Guide
Form 361015-0001A
multi-point circuits. DDS DS0 data formats are described in
Bellcore GR-499-CORE, Transport Systems Generic
Requirements.
DFB
Distributed Feedback Laser. A laser transmitter used at the
distribution level of the local loop. A DFB laser is beneficial
due to its ability to segment the available bandwidth.
DHCP
Dynamic Host Configuration Protocol. DHCP is a TCP/IP
protocol that enables PCs and workstations to get
temporary or permanent IP addresses from centrally
administered servers.
DLC
Digital Loop Carrier refers to a piece of equipment that
terminates analog metallic telephony interfaces and
communicates to a local digital switch by way of multiple
digital trunk lines.
DNE
Digital Network Equipment is any piece of equipment used
to terminate a Digital transmission line such as a channel
bank or router.
DS0
Digital Signal Level Zero. A line that is provisioned from the
telephone company to the end user which provides a
constantly available signal path. Most often used for data
traffic or for trunking to a voice or data switch.
DS1
Digital Signal Level 1 provides a 1.544 Mbit/sec. data path.
DS1 circuits are often referred to as T1 circuits.
DTE
Data Terminal Equipment. DTE equipment includes
transmitting and receiving equipment located at the
HeadEnd.
EDFA
Erbium Doped Fiber Amplifier. An amplifier that uses the
element erbium to assist in amplifying optical signals,
generally in the 1550 nanometer light range.
ERL
Erlang. A measurement of telephone traffic equal to 36
CCS. Most often used for measuring telephone traffic on a
trunk group.
EMS
Element Management System. A component of the
FiberPath software suite, The EMS tends to the day to day
operation of the various “elements” of the FiberPath
system.
ESF
Extended Super Frame is a framing format for T1 services
with a twenty-four frame multi-frame group. The ESF frame
format allows enough framing information (F bits) to
provide a messaging data link, CRC error checking, as well
as four signaling bits per DS0.
FDL
Facility Data Link is a message channel provided by the F
bits in an ESF multi-frame. It is used to pass performance
messages according to the ANSI T1.403 standard and can
be used for proprietary messaging between network
devices.
FIBERPOINT
This is the generic name for the enclosure which attaches
to the home. The Fiberpoint terminates and converts
optical signals into electrical signals to provide voice, video
and data services to the subscriber. Also provides return
path signals to the Central Office.
FTTH
Fiber To The Home. Delivery of voice, video and data
services via optical fiber directly to the side of the home.
Eliminates the need for HFC plants.
GPON
Gigabit Passive Optical Network.
GPON CARD
FiberDrive Card Assembly. Refers to the two card set the
implements the GPON transport module in the HDT.
GR-303
Bellcore standard defining the interface between a digital
switch and a universal digital loop carrier system.
HDT
Head end Data Terminal refers to the equipment that
terminates the Optical Solutions passive optical network at
the HeadEnd. For the FiberDrive system this is the DLC.
HFC
Hybrid Fiber Coax. A description for any network
architecture for cable or telephone networks which
employs some combination of fiber and coaxial cable. The
term also may be used to describe a specific network
architecture employed by most cable operators and some
telephone companies.
HO
Refers to the Central or Home Office of the service
provider.
IDT
Integrated Digital Terminal is that part of a digital switch
responsible for the interface to any universal digital loop
carrier Remote Digital Terminals (RDTs).
IF
Intermediate Frequency.
IGMPv2
Internet Group Management Protocol (version 2). Used by
IP hosts and gateways, this protocol reports their multicast
group memberships.
IP
Internet Protocol. Packet based standard that is the most
widely used protocol on the internet. Its addressing allows
the packets of information to traverse multiple networks in
order to reach its required destination.
LDS
Local Digital switch refers to a switch capable of interfacing
to a digital loop carrier remote digital terminal to extend the
allowable distance of the metallic phone lines. The LDS
interfaces to the RDT by way of multiple digital trunk lines.
LPC
Local Power Converter. An AC to DC electrical converter
placed inside the subscribers home which provides power
to the Fiberpoint.
mA
Milliamp.
