Network Deployment Metrics Flashcards
General
Fiber to the Home (FTTH)
Final connection to subscriber’s premises is optical fiber, terminating inside or within 2m of the premises
Note: Also called Fiber to the Premises (FTTP)
General
Fiber to the Building (FTTB)
Supports multiple subscribers in a single structure, with the fiber entering the building and terminating on an external wall or within 2m of it
Topology
Network Topology
Configuration of cable plant that connects the operator’s and subscriber’s premises, including point-to-point, point-to-multipoint, or ring topology
Topology
Point-to-Multipoint (P2MP)
Star topology with optical splitters for PON systems, providing branching optical signal paths from a communication node to more than one premises
Topology
Point-to-Point (P2P)
Topology in which all fiber links are from one transmitter to one receiver, with uninterrupted optical fiber paths from communication switching equipment to a single location at the premises
Network
WDM-PON
Passive optical network architecture using wavelength division multiplexing (WDM) to assign different wavelengths for separate ONU units. Two variations: point-to-point (P2P) and time and wavelength division multiplexing (TWDM). P2P uses dedicated wavelengths for each ONU unit, while TWDM allows for dynamic allocation of wavelengths for higher capacity and flexibility
Network
Feeder Network
Fiber cable network from central office Optical Line Terminal (OLT) to first optical splitter in a PON architecture. Carries high-bandwidth signals to optical splitters, which distribute signals to individual ONUs in the distribution network
Network
PPPoE (Point-to-Point Protocol over Ethernet)
Protocol used to authenticate client on the network using credentials such as a username and password
Equipment & Materials
OLT (Optical Line Terminal)
Centralized Access equipment where subscriber’s fiber terminates
Equipment & Materials
NID (Network Interface Device)
Small box outside client’s premises, where fiber from outside is connected to fiber inside the house
Equipment & Materials
FDH (Fiber Distribution Hub)
Hub/cabinet on the core network that end point connects to
Equipment & Materials
ONT (Optical Network Terminal)
Device that communicates directly with an internet service provider to secure a fiber optic connection
Equipment & Materials
Router
Device that establishes PPPoE session and provides Layer 3 IP functionality in the home
Equipment & Materials
CPE (Client premise equipment)
Active equipment placed in subscriber’s home
Equipment & Materials
TR069
Software used to remotely manage CPE devices
Equipment & Materials
Optical Distribution Network (ODN)
Set of fibers, splitters, couplers, and other passive optical components in a PON that provide transmission means between OLT and ONUs, and between ONUs themselves
Equipment & Materials
Drop Cable
Fiber cable that connects individual subscriber’s premises to nearest optical splitter in PON network
Equipment & Materials
Access Protocol
Set of rules governing communication between equipment at communication nodes and subscriber’s premises in PON network. Access protocols ensure reliable and effective transmission and reception of information over optical paths
Equipment & Materials
Ethernet
Data communications protocol for premises and local access networks
Network Usage
Capacity
The data rates and downstream/upstream speeds of various PON technologies, such as NG-PON2, 10GE-PON, GPON, XG-PON1, and B-PON
Network Usage
Dark Fiber
A strand of fiber made available to a provider on an exclusive basis without active termination points
Homes Passed
Premises
Homes or places of business, with each apartment in a multi-dwelling unit counted as one premises
Homes Passed
Homes Passed
The potential number of Premises which a Service Provider has capability to connect to an FTTH/FTTB network in a service area
Homes Passed
Homes Connected
The number of premises that are connected to an FTTH network and are already subscribers or can be turned into subscribers without further installation work
