Specifications

Appendix: Glossary
Glossary
The following are terms and phrases used within this manual, or which are
found in documents associated with this equipment.
Term/Acronym Definition
1+1 The Term “1+1” refers to line protection where identical
information is transmitted on two redundant lines. The
Receiver chooses the “best” line to use based on the
BER of the line.
802.1ag IEEE standard for end-to-end OAM
802.3ah IEEE standard addressing Ethernet in the first mile and
also OAM for point-to-point Ethernet links.
CFM Connectivity Fault Management
CLI Command Line Interface: An interface screen, often
DOS-based, used for system management and
diagnostics requiring the user to type commands rather
than use a GUI.
CPE Customer Premises Equipment; normally the end point
of a leased fiber.
DC Direct Current
DDMI Digital Diagnostic Monitor Interface: A defined serial
interface and data format typically used to access SFP
internal information
DHCP Dynamic Host Configuration Protocol: Used to automate
configuration of computers that use TCP/IP
GUI Graphical User Interface: Software that provides a
visual interface to enable an end-user to manage and
monitor network devices.
IEEE Institute of Electrical and Electronics Engineers; IEEE
develops industry-wide standards for use in a variety of
electronic devices
IP Internet Protocol
LED Light Emitting Diode: A small stack of lights to indicate
link, duplex or other options.
MA Maintenance Association
MD Maintenance Domain