Zhone IMACS 8000 User Manual page 768

Model No.
Running Head
Fractional E1
FEBE
Far End Block Error, shows transmission errors detected by the far end equipment
FOTS
Fiber Optics Transmission Systems
frame
A delineated assembly of information, consisting of one sequence of 24 encoded channel
samples (T1) or 32 channel samples (E1).
FRAD
Frame Relay Assembler/Disassembler, a card used in this system.
FRS
Frame Relay Server, a card used in this system.
FS
Frame Signaling bits (T1 line).
FT
Frame Terminal bits (T1 line)
FT1
Fractional T1
FUNI
Frame User Network Interface
FX
Foreign Exchange, a line that goes from a CO or PBX beyond the PBX or the CO's normal
service area.
FXO
E-10 Reference Guide