Technical Glossary

CEI - Common Electrical I/O

NNI - Network to Network Interface

OAM&P - Operations Administration, Maintenance, & Provisioning Working Group

PLL - Physical and Link Layer Working Group

SFI - Serdes Framer Interface

SPI - System Packet Interface

SXI-5 - SFI/SPI-5 Common Electrical Interface

TFI-5 - TDM Fabric to Framer Interface

UNI - User Network Interface

VSR - Very Short Reach

XFP - 10 Gigabit Small Form Factor Pluggable