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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