This document provides definitions for common business communications acronyms, including ACD for Automatic Call Distribution, API for Application Programming Interface, BYOD for Bring Your Own Device, CRM for Customer Relationship Management, FMC for Fixed Mobile Convergence, IP for Internet Protocol, IVR for Interactive Voice Response, LAN for Local Area Network, MBPS for Mega Bits Per Second, PBX for Private Branch Exchange, PoE for Power over Ethernet, RTP for Realtime Transport Protocol, SIP for Session Initiation Protocol, SMB for Small and Medium Businesses, TDM for Time Division Multiplexing, UC for Unified Communications, and VoIP for Voice over Internet Protocol.