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G L O S S A R Y
G L - 2 1
365-372-334 R2.0
Issue 4, November 2004
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E
EC-1, EC-n - Electrical Carrier
The basic logical building block signal with a rate of 51.840 Mb/s for an EC-1
signal and a rate of n times 51.840 Mb/s for an EC-n signal. An EC-1 signal can be
built in two ways: A DS1 can be mapped into a VT1.5 signal and 28 VT1.5 signals
multiplexed into an EC-1 (VT1.5 based EC-1), or a DS3 can be mapped directly
into an EC-1 (DS3 based EC-1).
ECI - Equipment Catalog Item
The bar code number on the faceplate of each circuit pack used by some inventory
systems.
ES - Errored Seconds
A performance monitoring parameter.
ESF - Extended Super Frame
The format for a DS1 signal.
F
FE - Far End
Any other network element in a maintenance subnetwork other than the one the
user is at or working on. Also called remote.
FE ACTY - Far End Activity
An LED on the SYSCTL circuit pack faceplate.
FEBE - Far End Block Error
An indication returned to the near-end transmitting node that an errored block has
been detected at the far end.
FEPROM - Flash EPROM
Nonvolatile Electrically-erasable Programmable Read-Only Memory.
FERF - Far End Receive Failure
An indication returned to the transmitting terminal that the receiving terminal has
detected an incoming section failure.
FE SEL - Far End Select
An LED on the faceplate of the SYSCTL circuit pack.
FIT
Failures in 10
-9
hours of operation.
Summary of Contents for Metropolis DMXplore
Page 8: ... C O N T E N T S v i i i 365 372 334 R2 0 Issue 4 November 2004 ...
Page 16: ... T A B L E S x v i 365 372 334 R2 0 Issue 4 Novmeber 2004 Glossary ...
Page 286: ... Backplane Pin Replacement Replacement Methods D 1 0 365 372 334 R2 0 Issue 4 November 2004 ...
Page 292: ... Installation Checklist Overview E 6 365 372 334 R2 0 Issue 4 November 2004 ...
Page 326: ... G L O S S A R Y G L 3 0 365 372 334 R2 0 Issue 4 November 2004 ...