Preface
xiii
Form 361015-0001A
FiberPoint Structured Wiring Enclosure Installation Guide
MAC Address
Media-specific Access Control Address. A 48 bit number
corresponding to a unique local area network interface
card.
MEM
Main Electronics Module. The electronics which makes up
the subscriber’s premises equipment.
MIC
Medium Interface Connector. A common inter-connect
cable.
nm
Nanometer. A convenient unit for describing the
wavelength of light. One nanometer equals one billionth of
a meter or 10 angstroms or one millimicron.
OLT
Optical Line Terminal. A generic reference to the laser
transmitter shelves mounted in the FiberPath bay.
ONU
Optical Network Unit. A generic reference to the Fiberpoint
enclosure at the subscriber premise.
OTDR
Optical Time Domain Reflectometer. A device that tests
and measures the quality of fusion splices and the location
(distance from the meter) of fiber optic splitters.
PDU
Payload Data Unit.
PON
Passive Optical Network. A fiber optic network which uses
passive splitters to deliver signals to multiple users, without
the need for signal amplification.
POP
Point of Presence. A place where your Interexchange
Carrier (long distance) terminates your long distance lines
prior to the local area exchange connection. Typically, the
POP is a long distance carrier’s office within your local
community.
POTS
Plain Old Telephone Service.
PRM
Performance Report Messages are sent once per second
on the T1 data link to indicate interface performance for the
current second and the last three seconds. Contains such
things as number of framing errors, CRC errors, line code
violations, and loop back status.
PSTN
Public Switched Telecommunications Network. Refers to
the world's collection of interconnected voice-oriented
public telephone networks, both commercial and
government-owned. It's also referred to as the Plain Old
Telephone Service (POTS)
RDT
Remote Digital terminal refers to the portion of the DLC
responsible for interfacing to the LDS.
RF
Radio Frequency
SAR
Segmentation and Re-assembly refers to the action of
segmenting an information element into multiple ATM cells
with additional control information. Re-assembly of the
information from the ATM cells using the embedded control
information.
SF
Super Frame is a framing format for T1 services with a
twelve frame multi-frame group. The SF frame allows
enough signaling information to provide two signaling bits
per DS0.
SO/HO
Small Office/Home Office
SWEB
Structured Wiring Enclosure Bracket. The bracket which
the Main Electronics Module is mounted.
TDM
Time Division Multiplex. A technique for transmitting a
number of separate voice, video or data signals
simultaneously over the same transport medium. Each
transmit and receive signal is assigned a unique time slot.
telco
Telephone company
TPM
Telephone Protector Module. Also referred to as tip and
ring, the physical connection of the telephone line to the
Fiberpoint unit.
TMC
Timeslot Management Channel is a specific DS0 on the
GR-303 interface defined to carry call timeslot allocation
messages between the IDT and RDT.
TWP
Twisted Wire Pair. Twisted pair of copper wires used for
voice/data transmission in or near the end user premises.
TX
Transmitter. Generally an optical laser that sends signals
down an optical fiber.
UVG
Universal Voice Grade. An expansion card, developed by
Optical Solutions, that provides Loop Start and Ground
Start POTS , primarily to business customers.
VCI
Virtual Channel Identifier. A 16 bit field in the ATM cell
header identifying the “virtual circuit” which the data will
travel (transmission to reception).
VPI
Virtual Path Identifier. An 8 bit string filed in the ATM
header, identifying the “virtual path” over which the
transmitted data will flow (transmission to reception).
VPON
Video Passive Optical Network. Refers to the Analog Video
portion of the PON.Revision History