g Equipment Post Telegraph and Telephone Acronyms Permanent Virtual Circuit or Connection Quality of Service Regional Bell Operating Company RDI-L Remote Defect Indication-Line RDI-LV Remote Defect Indication-Line, VT Interface RDI-P Remote Defect Indication-Path REI-L Remote Error Indication-Line REI-LV Remote Error Indication-Line, VT Interface Routing Information Protocol Radio Local Exchange Carrier Resilient Packet Ring Retiming, Reshaping, and Regenerating Rapid Spanning Tree Algorithm Rapid Spanning Tree Protocol Roof-Top System Routing and Wavelength Assignment Receiver Module Return to Zero Storage Area Network Stimulated Brillouin Scattering Signal Degrade Synchronous Digital Hierarchy Severely Errored Frame SEF-LV Severely Errored Frame-Line, VT Interface Sales, General, and Administrative Service Level Agreement Switched Multimegabit Data Service Single Mode Fiber Service Node Simple Network Management Protocol Section Overhead SONET Synchronous Optical Network Standard Payload Envelope Acronyms Split-MLT Split-Multilink Trunking Protocol Self-Phase Modulation Spatial Reuse Protocol Stimulated Raman Scattering Storage Service Provider Statistical Time Division Multiplexing Section-Terminating Equipment Signaled Virtual Circuit or Connection Time Division Multiplexing Traffic Engineering Terahertz TIM-P Trace Identifier Mismatch-Path Transparent LAN Service Transmitter Optical Subassembly Time Slot Assignment Time Slot Interchange Transmitter Module User-Network Interface Unidirectional Path-Switched Ring Vapor Axial Deposition Virtual Channel VCSEL Vertical Cavity Surface Emitting Laser Virtual Local Area Network Voice over Internet Protocol Virtual Private Network Virtual Tributary Wide Area Network Wavelength Division Multiplexing Wide Wavelength Division Multiplexing WAN Interface Sublayer Zero-Dispersion Point This page intentionally left blank. INDEX Symbols APS (automatic protection switching), BWDM, 337 1:N protection channel sharing, architecture of FSO, 425 SONET, 192 ASK (amplitude shift key