PDU
Power distribution unit
RFT
Remote fiber terminal
SEM
Single equipment module
STS-1
SONET transport signal level 1
STS-3
SONET transport signal level 3
STSBM
SONET transport signal bandwidth manager
VT
Virtual tributary
VTBM
Virtual tributary bandwidth manager
AccessNode Modular Business Package VTBM Ring User Guide P0904244 Issue 1.0
List of acronyms 13-3