User manual

Preface
308684-B Rev 00
xix
EIA Electronic Industries Association
EMI electromagnetic interference
GND ground
IFP Internet forwarding processor
IP Internet Protocol
LED light emitting diode
LOF loss of frame
LOS loss of signal
MMF multimode fiber
NC normally closed
NEMA National Electrical Manufacturers Association
NO normally open
OC-3 Optical Carrier-level 3
OC-12 Optical Carrier-level 12
POS packet over sonet
RDI remote defect indication
RFU reserved for future use
RLSD received line signal detection
RTS ready to send
Rxd receive data
SMF single-mode fiber
SSP system services processor
STM synchronous transfer mode
TP trunk processor
Txd transmit
UBR unspecified bit rate
UTP unshielded twisted pair
VBR variable bit rate