802.17: IEEE working group defining the standard that uses RPR to extend Ethernet over the MAN and WAN.
iSCSI: Emerging IETF standard protocol for extending a SCSI bus over an IP network.
OC-768: Sonet technology providing 40 Gbps on a single circuit.
Physical Coding Sublayer (PCS): Part of PHY that dictates the bit patterns sent to the PMD.
Physical Interface (PHY): Corresponds to Layer 1 of the OSI model; incorporates the PCS and PMD.
Physical Media Dependent (PMD): PHY layer that dictates the way bits are converted to physical signals, such as light in the case of fiber.
Resilient Packet Ring (RPR): Emerging technology combines packet switched networks with dual rings.
Wavelength Division Multiplexing (WDM): Emerging technology combines packet switched networks with dual rings.