DS (Digital Signal)

Referring to a digital signaling level in the North American digital carrier hier-

archy. See digital signal hierarchy, DS-0, DS-1, DS-1C, DS-2, DS-3, and DS-4.

• information service
• Information Superhighway
• information technology (IT)
• infralow frequency (ILF)
• infrared (IR)
• infrastructure mesh
• infrastructure mode
• In-house BPL (In-house Broadband over Power Line)
• in-house broadband over power line (In-house BPL)
• IN (Intelligent Network)
• initialism
• injection fiber
• input/output (I/O)
• INRIA (National de Recherche en Informatique et en Automatique)
• insertion gain
• insertion loss
• inside plant (ISP)
• inside vapor deposition (IVD)
• inside wire and cable
• Instant Messaging and Presence (IMP)
• Instant Messaging and Presence Protocol (IMPP)
• Instant Messaging and Presence Protocol (IMPP)
• instant messaging (IM)
• Institute of Electronic and Electrical Engineers (IEEE)
• Institute of Electronic and Electrical Engineers (IEEE)