Glossary Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business. Show only animated 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Variable Bit Rate (VBR) VBR VBW VC VC_RDY VCAT VDSL VDSL2 Vectoring Very-high-bit-rate digital subscriber line 2 (VDSL2) Very-high-data-rate digital subscriber line (VDSL) VF VFL Video-on-Demand (VoD) Virtual Concatenation (VCAT) Virtual Local Area Network (VLAN) Virtual Private LAN Service (VPLS) Virtual Private Network (VPN) Virtualized Network Visual Fault Locator VLAN VNA VOA VoD VoDSL Voice over Digital Subscriber Line (VoDSL) Voice over Internet Protocol (VoIP) VoIP VoLTE VPI VPLS VPN VPSN VSWR VT